People

Professor Tracy Lawson

Professor
School of Biological Sciences
Professor Tracy Lawson

Profile

Biography

2016-present University of Essex, Colchester, UK Professor- Plant Physiology 2015-2016 University of Essex, Colchester, UK Reader-Plant and Algae Physiology 2015-2015 University of Essex, Colchester, UK Senior Lecturer -Plant and Algae Physiology 2014- 2015 University of Essex, Colchester, UK Senior Research Fellow -Plant and Algae Physiology 2009- 2014 University of Essex, Colchester, UK Research Fellow -Plant and Algae Physiology 2007-2009 University of Essex, Colchester, UK Permanent Senior Research Officer -Plant and Algae Physiology 2002-2003 Australian National University, Canberra, Australia Visiting Research Fellow: Developing transgenic tobacco with altered guard cell metabolism 1999-2007 University of Essex, Colchester, UK Senior Research Officer: Evaluating contributions of guard and mesophyll cell photosynthesis in the regulation of stomatal movements 1998-1999 University of Nottingham, Nottingham, UK Postdoctoral Research Associate: Investigating the effects of changing climate and potential impacts on potato yield and quality (CHIP) 1997-1998 University of Dundee, Scotland, UK Postdoctoral Research Assistant: Investigating soil microbial activity associated with buried archaeological material and the interactions between them 1993-1997 University of Dundee, Scotland, UK PhD: Heterogeneity in Stomatal characters 1989-1993 Liverpool, John Moore's University, Liverpool, UK BSc(Hons.) Applied Biology Lab no: 6.23 Lab ext: 3726 Current Group: Dr Silvere Vialet-Chabrand. PDRA. Wider and faster: high-throughout phenotypic exploration of novel genetic variation for breeding high biomass and yield in wheat. .(IWYP Grant); in collaboration with E. Murchie (Nottingham) 2016-2019. Dr Michele Faralli:PDRA. PHOTOWHEAT. (BBRSC IPA grant with NIAB and Bayer Ltd). 2017-2020. Mr Jack Matthews- PHD BIOLOGICAL SCIENCES Scaling up dynamic responses of stomata to assess impacts on tree canopy carbon gain and water use efficiency.(NERC Env East DTP studentship). . Miss Kucheli Batta- PHD BIOLOGICAL SCIENCES.The role of guard cell chloroplasts in co-ordinating stomatal and mesophyll responses. Mr Ifeanyi Oyemike- MPHD CELL AND MOLECULAR BIOLOGY. Manipulating Guard cell anatomy and physiology using biotechnological approaches to understanding impact on crop performance. Mr James Stevens- PHD BIOLOGICAL SCIENCES Understanding water-use variation in elite barley varieties. (Funded by The Perry Foundation & School of Biological Sciences, University of Essex). Mr John Stamford- PhD Biological Sciences.Using spectral signatures as a toolbox for determining crop health status. (BBSRC Industrial Case Studentship, with industrial partners Environment Systems Ltd.). Mr Matthew Keys- PhD MARINE BIOLOGY. Effect of future CO2, temperature and nutrient regimes on primary production in the Western English Channel. Shellie Wall: PhD student. Determination of the extent to which anatomical stomatal characters determine leaf transpiration, temperature and CO2 assimilation in wheat. Amnah Alamri: PhD student. The role of the guard cell chloroplasts in stomatal behaviour and co-ordination with mesophyll photosynthesis. Current funding: See link below. Previously funded project: BBSRC (PI Lawson, with Glasgow lead) Stomatal-based systems analysis of water use efficiency. £263K. Ocean Acidification impacts on sea-surface biology, biogeochemistry and climate(NERC consortium PhD studentship);Co-Investigator Feb 2011-Jan 2014: PhD student - L. Bretherton. ca. £100K Environmental influences on isoprene consumption in a temperate forest ecosystem. (NERC)Co-Investigator; Lead Mcgeneity. £210K Manipulation of photosynthetic carbon metabolism in wheat to improve yield (BBSRC) (Co-Investigator, Lead Raines) £315K Metabolic engineering to enhance photosynthesis based on empirical data and in silico modelling. (BBSRC) (Co-Investigator, Lead Raines) £440K Integrated approach to studying effects of combined biotic and abiotic stress in crop plants(EU) (Co-Investigator, Lead Mullineaux) Euro386K Environmental meta-genomics and biotechnology of desert macroflora, microflora and fauna(KAU ) (Co-Investigator, Lead Mullineaux) £250K A community metabolism approach to examine the environmental regulation of coral growth(NERC standard grant); Oct 2009-Sep 2012: Joint PI. PDRA - Dr D. Laing. £354K Effect of light, CO2 and nutrient limitation on photosynthesis in marine diazotrophic cyanobacteria.(NERC standard grant). March 2008- August 2011. PDRA - Dr. M. Fryer. £408K Establishing the mechanism(s) that enable stomata to respond to changing environmental cues, facilitating enhanced water use efficiency.(NERC quota studentship to Department of Biological Sciences). PhD student L. McAusland. Co-supervised Research students: Mr Duncan Sweeney- MPHD BIOLOGICAL SCIENCES Mr William Passfield- PHD MARINE BIOLOGY Past students: Dr Leila Tavallali- PHD MARINE BIOLOGY Dr Laura Bretherton - PHD MARINE BIOLOGY. Effect of future CO2, temperature and nutrient regimes on primary production in the Western English Channel. Dr Lorna McAusland - The influence of stomata on intrinsic water-use efficiency Dr Wael Obaid - The influence of nanoparticals on plant performance (Co-I with Colbeck) Dr Narin Chansawang - The effects of growth conditions on the biochemical composition of marine microalgae (Co-I with Geider) Dr Stuart Fisk - The effect of increased plastid transketoloase activity on thiamine metabolism in transgenic tobacco (Co- I with Raines) Dr Gordon Murphy- PHD ENVIRONMENTAL MICROBIOLOGY

Qualifications

  • PhD Plant Science University of Dundee (1997)

Research and professional activities

Research interests

Plant ecophysiology

Electron transport and photosynthesis

Stomatal physiology, control of gas exchange and carbon metabolism

Plant growth and water use efficiency

Effect of climate change on plant ecophysiology

Interaction between plants and their microclimate

Genetic manipulation of guard cell metabolism

Chlorophyll fluorescence imaging

Thermal imaging

Algal/cyanobacterial physiology

Photosynthesis and Nitrogen fixation

Ocean acidification, including tecniques to measure carbonate chemistry

Chlorophyll fluorescence

Systems biology led modelling of high light responses in Arabidopsis

Dynamic acclimation to increased light intensities is characterised by increased photosynthetic capacity leading to increase plant productivity or fitness. Using time series transcrptomics data from plant responding to an increase in light intensity, we have observed the beginnings at the molecular level of dynamic acclimation, several days before it is manifest as increased photosynthetic capacity. The initiation of acclimation is controlled by a photoreceptor and activates a network of transcription factors which are central to the acclimation process. These geens provide the means for articifically being able to increase photosynthetic capcity tapping in on the plant's intrinsic capacity to do this. For details of the genes involved contact Phil Mullineaux, who will be happy to discuss this with you. The datasets are available on GEO and a paper is being prepared for publication.

Current research

Research Details: Stomatal physiology - Climate change and increasing global population is intensifying the need to find suitable crop plants for sustainable food and fuel production for future generations. Drought conditions and reduced water availability severely impact plant productivity and are considered a global threat to world food security. Stomata and their function therefore play a central role in determining the amount of carbon gained per unit water lost, known as plant water use efficiency and consequently have significant implications for crop yields, as well as global hydrological and carbon cycles. Stomata must ensure an appropriate balance between CO2 demands for photosynthesis and water loss through transpiration by correlating stomatal conductance with mesophyll photosynthetic rates. The underlying mechanisms and signals that promote this relationship are currently unknown. Stomata and photosynthesis respond to a number of environmental cues, however responses are not synchronized, with stomatal adjustments generally an order of magnitude slower than mesophyll responses. The resulting disconnection between stomatal conductance and photosynthetic rate means that under natural fluctuating environmental condition water use efficiency is most likely far from optimal. I am therefore interested in stomatal control of CO2 assimilation and the relation between mesophyll photosynthesis and stomatal behaviour and the signalling pathways that link these two fundamental processes. I also research the role of guard cell chloroplasts in stomatal function and how guard cell photosynthesis may provide a functional link between mesophyll photosynthesis and guard cell aperture.

Cyanobacterial physiology - Oceans play a major role in the global carbon cycle, with about 50% of the Earths photosynthesis each year occurring in aquatic marine environments, representing a major sink for atmospheric carbon dioxide (CO2). Primary productivity in many areas of the worlds oceans is limited by nitrogen and other nutrients such as phosphorous (P). Thus N2 fixing cyanobacteria including the dominant filamentous Trichodesmium are important in oligotrophic waters where they contribute the N that supports up to 50% of export production (Tyrrell et al., 2003; Capone et al., 2005). N2 fixation is an energy requiring process catalyzed by the enzyme nitrogenase, which is irreversibly damaged by molecular oxygen. Therefore, N2 fixing cyanobacteria must prevent nitrogenase from being damaged by molecular oxygen produced as a by-product of photosynthesis. Most diazotrophic cyanobacteria achieve this by separating photosynthesis and N2 fixation either spatially or temporally. Spatial separation is accomplished by conducting N2 fixation in specialized cells called heterocysts whilst temporal segregation relies on the use of respiratory energy to fix N2 at night. In contrast to these two strategies, the non-heterocyst cyanobacterium Trichodesmium executes both photosynthesis and N2 fixation during the light period without morphological differentiation of specialized cells. I am currently investigating the mechansims that allow photosynthesis and N2 fixation to occur simultaneously. I am also investigating the influence of elevated CO2 and nutrient limitation on photosynthetic processes and N2 fixation in two key cyanobacteria Trichodesmium and Crocosphaera.

Publications

Journal articles (100)

Lawson, T. and Vialet-Chabrand, S., (2019). Speedy stomata, photosynthesis and plant water use efficiency. New Phytologist. 221 (1), 93-98

Ferguson, JN., Humphry, M., Lawson, T., Brendel, O. and Bechtold, U., (2018). Natural variation of life-history traits, water use, and drought responses in Arabidopsis. Plant Direct. 2 (1), e00035-e00035

Archer, SD., Stefels, J., Airs, RL., Lawson, T., Smyth, TJ., Rees, AP. and Geider, RJ., (2018). Limitation of dimethylsulfoniopropionate synthesis at high irradiance in natural phytoplankton communities of the Tropical Atlantic. Limnology and Oceanography. 63 (1), 227-242

Boatman, TG., Davey, PA., Lawson, T. and Geider, RJ., (2018). The physiological cost of diazotrophy for Trichodesmium erythraeum IMS101. PLoS ONE. 13 (4), e0195638-e0195638

Boatman, TG., Oxborough, K., Gledhill, M., Lawson, T. and Geider, RJ., (2018). An integrated response of Trichodesmium erythraeum IMS101 growth and photo-physiology to Iron, CO₂, and light intensity. Frontiers in Microbiology. 9 (APR), 624-

Boatman, TG., Mangan, NM., Lawson, T. and Geider, RJ., (2018). Inorganic carbon and pH dependency of Trichodesmium's photosynthetic rates.. Journal of Experimental Botany. 69 (15), 3651-3660

Matthews, JSA., Vialet-Chabrand, SRM. and Lawson, T., (2018). Acclimation to fluctuating light impacts the rapidity and diurnal rhythm of stomatal conductance.. Plant Physiology. 176 (3), 1939-1951

Murchie, EH., Kefauver, S., Araus, JL., Muller, O., Rascher, U., Flood, PJ. and Lawson, T., (2018). Measuring the dynamic photosynthome. Annals of Botany. 122 (2), 207-220

Keys, M., Tilstone, G., Findlay, HS., Widdicombe, CE. and Lawson, T., (2018). Effects of elevated CO2 and temperature on phytoplankton community biomass, species composition and photosynthesis during an experimentally induced autumn bloom in the western English Channel. Biogeosciences. 15 (10), 3203-3222

Pennacchi, JP., Carmo-Silva, E., Andralojc, PJ., Lawson, T., Allen, AM., Raines, CA. and Parry, MAJ., (2018). Stability of wheat grain yields over three field seasons in the UK. Food and Energy Security, e00147-e00147

Boatman, TG., Davey, PA., Lawson, T. and Geider, RJ., (2018). CO2 modulation of the rates of photosynthesis and light-dependent O2 consumption in Trichodesmium. Journal of Experimental Botany

Vialet-Chabrand, S., Matthews, JSA., Simkin, AJ., Raines, CA. and Lawson, T., (2017). Importance of Fluctuations in Light on Plant Photosynthetic Acclimation. Plant Physiology. 173 (4), 2163-2179

Matthews, JSA., Vialet-Chabrand, SRM. and Lawson, T., (2017). Diurnal Variation in Gas Exchange: The Balance between Carbon Fixation and Water Loss. Plant Physiology. 174 (2), 614-623

Camp, EF., Dong, LF., Suggett, DJ., Smith, DJ., Boatman, TG., Crosswel, JR., Evenhuis, C., Scorfield, S., Walinjkar, A., Woods, J. and Lawson, T., (2017). A novel membrane inlet-infrared gas analysis (MI-IRGA) system for monitoring of seawater carbonate system. Limnology and Oceanography: Methods. 15 (1), 38-53

Boatman, TG., Lawson, T. and Geider, RJ., (2017). A Key Marine Diazotroph in a Changing Ocean: The Interacting Effects of Temperature, CO2 and Light on the Growth of Trichodesmium erythraeum IMS101. PLOS ONE. 12 (1), e0168796-e0168796

Vialet-Chabrand, S., Hills, A., Wang, Y., Griffiths, H., Lew, VL., Lawson, T., Blatt, MR. and Rogers, S., (2017). Global Sensitivity Analysis of OnGuard Models Identifies Key Hubs for Transport Interaction in Stomatal Dynamics. Plant Physiology. 174 (2), 680-688

Elena López-Calcagno, P., Omar Abuzaid, A., Lawson, T. and Anne Raines, C., (2017). Arabidopsis CP12 mutants have reduced levels of phosphoribulokinase and impaired function of the Calvin–Benson cycle. Journal of Experimental Botany. 68 (9), 2285-2298

Keys, M., Tilstone, G., Findlay, HS., Widdicombe, CE. and Lawson, T., (2017). Effects of elevated CO2 on phytoplankton community biomass and species composition during a spring Phaeocystis spp. bloom in the western English Channel. Harmful Algae. 67, 92-106

Driever, SM., Simkin, AJ., Alotaibi, S., Fisk, S., Madgwick, PJ., Sparks, CA., Jones, HD., Lawson, T., Parry, MAJ. and Raines, CA., (2017). Increased SBPase activity improves photosynthesis and grain yield in wheat grown in greenhouse conditions. Philosophical Transactions of the Royal Society B: Biological Sciences. 372 (1730), 20160384-20160384

Simkin, AJ., McAusland, L., Lawson, T. and Raines, CA., (2017). Overexpression of the RieskeFeS Protein Increases Electron Transport Rates and Biomass Yield. Plant Physiology. 175 (1), 134-145

Carmo-Silva, E., Andralojc, PJ., Scales, JC., Driever, SM., Mead, A., Lawson, T., Raines, CA. and Parry, MAJ., (2017). Phenotyping of field-grown wheat in the UK highlights contribution of light response of photosynthesis and flag leaf longevity to grain yield. Journal of Experimental Botany. 68 (13), 3473-3486

Caspari, OD., Meyer, MT., Tolleter, D., Wittkopp, TM., Cunniffe, NJ., Lawson, T., Grossman, AR. and Griffiths, H., (2017). Pyrenoid loss in Chlamydomonas reinhardtii causes limitations in CO2 supply, but not thylakoid operating efficiency. Journal of Experimental Botany. 68 (14), 3903-3913

Vialet-Chabrand, SRM., Matthews, JSA., McAusland, L., Blatt, MR., Griffiths, H. and Lawson, T., (2017). Temporal Dynamics of Stomatal Behavior: Modeling and Implications for Photosynthesis and Water Use. Plant Physiology. 174 (2), 603-613

Wang, Y., Hills, A., Vialet-Chabrand, SRM., Papanatsiou, M., Griffiths, H., Rogers, S., Lawson, T., Lew, V. and Blatt, MR., (2017). Unexpected Connections between Humidity and Ion Transport Discovered using a Model to Bridge Guard Cell-to-Leaf Scales. The Plant Cell. 29 (11), 2921-2939

Simkin, AJ., Lopez-Calcagno, PE., Davey, PA., Headland, LR., Lawson, T., Timm, S., Bauwe, H. and Raines, CA., (2017). Simultaneous stimulation of sedoheptulose 1,7‐bisphosphatase, fructose 1,6‐bisphophate aldolase and the photorespiratory glycine decarboxylase‐H protein increases CO2 assimilation, vegetative biomass and seed yield in Arabidopsis. Plant Biotechnology Journal. 15 (7), 805-816

Simkin, A., McAusland, L., Lawson, T. and Raines, CA., (2017). Over-Expression Of The RieskeFeS Protein Increases Electron Transport Rates And Yield In Arabidopsis

Vialet-Chabrand, S., Matthews, JSA., Brendel, O., Blatt, MR., Wang, Y., Hills, A., Griffiths, H., Rogers, S. and Lawson, T., (2016). Modelling water use efficiency in a dynamic environment: An example using Arabidopsis thaliana. Plant Science. 251, 65-74

McElwain, JC., Yiotis, C. and Lawson, T., (2016). Using modern plant trait relationships between observed and theoretical maximum stomatal conductance and vein density to examine patterns of plant macroevolution. New Phytologist. 209 (1), 94-103

Minguet-Parramona, C., Wang, Y., Hills, A., Vialet-Chabrand, S., Griffiths, H., Rogers, S., Lawson, T., Lew, VL. and Blatt, MR., (2016). An Optimal Frequency in Ca 2+ Oscillations for Stomatal Closure Is an Emergent Property of Ion Transport in Guard Cells . Plant Physiology. 170 (1), 33-42

Webster, RJ., Driever, SM., Kromdijk, J., McGrath, J., Leakey, ADB., Siebke, K., Demetriades-Shah, T., Bonnage, S., Peloe, T., Lawson, T. and Long, SP., (2016). High C3 photosynthetic capacity and high intrinsic water use efficiency underlies the high productivity of the bioenergy grass Arundo donax. Scientific Reports. 6 (1), 20694-

Horrer, D., Flütsch, S., Pazmino, D., Matthews, JSA., Thalmann, M., Nigro, A., Leonhardt, N., Lawson, T. and Santelia, D., (2016). Blue Light Induces a Distinct Starch Degradation Pathway in Guard Cells for Stomatal Opening. Current Biology. 26 (3), 362-370

Beddow, J., Johnson, RJ., Lawson, T., Breckels, MN., Webster, RJ., Smith, BE., Rowland, SJ. and Whitby, C., (2016). The effect of oil sands process-affected water and model naphthenic acids on photosynthesis and growth in Emiliania huxleyi and Chlorella vulgaris. Chemosphere. 145, 416-423

Elliott-Kingston, C., Haworth, M., Yearsley, JM., Batke, SP., Lawson, T. and McElwain, JC., (2016). Does Size Matter? Atmospheric CO2 May Be a Stronger Driver of Stomatal Closing Rate Than Stomatal Size in Taxa That Diversified under Low CO2. Frontiers in Plant Science. 7 (AUG2016), 1253-

Jacobs, M., Lopez-Garcia, M., Phrathep, O-P., Lawson, T., Oulton, R. and Whitney, HM., (2016). Photonic multilayer structure of Begonia chloroplasts enhances photosynthetic efficiency. Nature Plants. 2 (11), 16162-

Sosan, A., Svistunenko, D., Straltsova, D., Tsiurkina, K., Smolich, I., Lawson, T., Subramaniam, S., Golovko, V., Anderson, D., Sokolik, A., Colbeck, I. and Demidchik, V., (2016). Engineered silver nanoparticles are sensed at the plasma membrane and dramatically modify the physiology ofArabidopsis thalianaplants. The Plant Journal. 85 (2), 245-257

Queiroz, AM., Mezacasa, AV., Graciano, DE., Falco, WF., M'Peko, J-C., Guimarães, FEG., Lawson, T., Colbeck, I., Oliveira, SL. and Caires, ARL., (2016). Quenching of chlorophyll fluorescence induced by silver nanoparticles. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 168, 73-77

Bechtold, U., Penfold, CA., Jenkins, DJ., Legaie, R., Moore, JD., Lawson, T., Matthews, JSA., Vialet-Chabrand, SRM., Baxter, L., Subramaniam, S., Hickman, R., Florance, H., Sambles, C., Salmon, DL., Feil, R., Bowden, L., Hill, C., Baker, NR., Lunn, JE., Finkenstädt, B., Mead, A., Buchanan-Wollaston, V., Beynon, J., Rand, DA., Wild, DL., Denby, KJ., Ott, S., Smirnoff, N. and Mullineaux, PM., (2016). Time-series transcriptomics reveals that AGAMOUS-LIKE22 affects primary metabolism and developmental processes in drought-stressed arabidopsis. Plant Cell. 28 (2), 345-366

Lawson, T. and McElwain, JC., (2016). Evolutionary trade-offs in stomatal spacing. New Phytologist. 210 (4), 1149-1151

Santelia, D. and Lawson, T., (2016). Rethinking Guard Cell Metabolism. Plant Physiology. 172 (3), 1371-1392

McAusland, L., Vialet-Chabrand, S., Davey, P., Baker, NR., Brendel, O. and Lawson, T., (2016). Effects of kinetics of light-induced stomatal responses on photosynthesis and water-use efficiency. New Phytologist. 211 (4), 1209-1220

Johnson, GN., Lawson, T., Murchie, EH. and Raines, C., (2015). Photosynthesis in variable environments. Journal of Experimental Botany. 66 (9), 2371-2372

Pieruschka, R. and Lawson, T., (2015). Preface. Journal of Experimental Botany. 66 (18), 5385-5387

Litthauer, S., Battle, MW., Lawson, T. and Jones, MA., (2015). Phototropins maintain robust circadian oscillation of PSII operating efficiency under blue light. The Plant Journal. 83 (6), 1034-1045

Simkin, AJ., McAusland, L., Headland, LR., Lawson, T. and Raines, CA., (2015). Multigene manipulation of photosynthetic carbon assimilation increases CO2 fixation and biomass yield in tobacco. Journal of Experimental Botany. 66 (13), 4075-4090

de Torres Zabala, M., Littlejohn, G., Jayaraman, S., Studholme, D., Bailey, T., Lawson, T., Tillich, M., Licht, D., Bölter, B., Delfino, L., Truman, W., Mansfield, J., Smirnoff, N. and Grant, M., (2015). Chloroplasts play a central role in plant defence and are targeted by pathogen effectors. Nature Plants. 1 (6), 15074-15074

Khozaei, M., Fisk, S., Lawson, T., Gibon, Y., Sulpice, R., Stitt, M., Lefebvre, SC. and Raines, CA., (2015). Overexpression of Plastid Transketolase in Tobacco Results in a Thiamine Auxotrophic Phenotype. The Plant Cell. 27 (2), 432-447

Driever, SM., Lawson, T., Andralojc, PJ., Raines, CA. and Parry, MAJ., (2014). Natural variation in photosynthetic capacity, growth, and yield in 64 field-grown wheat genotypes. Journal of Experimental Botany. 65 (17), 4959-4973

Barrera Zambrano, VA., Lawson, T., Olmos, E., Fernandez-Garcia, N. and Borland, AM., (2014). Leaf anatomical traits which accommodate the facultative engagement of crassulacean acid metabolism in tropical trees of the genus Clusia. Journal of Experimental Botany. 65 (13), 3513-3523

Lawson, T. and Blatt, MR., (2014). Stomatal Size, Speed, and Responsiveness Impact on Photosynthesis and Water Use Efficiency. PLANT PHYSIOLOGY. 164 (4), 1556-1570

Lawson, T., Simkin, AJ., Kelly, G. and Granot, D., (2014). Mesophyll photosynthesis and guard cell metabolism impacts on stomatal behaviour. New Phytologist. 203 (4), 1064-1081

Lawson, T., Davey, PA., Yates, SA., Bechtold, U., Baeshen, M., Baeshen, N., Mutwakil, MZ., Sabir, J., Baker, NR. and Mullineaux, PM., (2014). C₃ photosynthesis in the desert plant Rhazya stricta is fully functional at high temperatures and light intensities. New Phytologist. 201 (3), 862-873

Gorecka, M., Alvarez-Fernandez, R., Slattery, K., McAusland, L., Davey, PA., Karpinski, S., Lawson, T. and Mullineaux, PM., (2014). Abscisic acid signalling determines susceptibility of bundle sheath cells to photoinhibition in high light-exposed Arabidopsis leaves. Philosophical Transactions of the Royal Society B: Biological Sciences. 369 (1640), 20130234-20130234

Yates, SA., Chernukhin, I., Alvarez-Fernandez, R., Bechtold, U., Baeshen, M., Baeshen, N., Mutwakil, MZ., Sabir, J., Lawson, T. and Mullineaux, PM., (2014). The temporal foliar transcriptome of the perennial C3 desert plant Rhazya stricta in its natural environment. BMC Plant Biology. 14 (1), 2-2

Read, BA., Kegel, J., Klute, MJ., Kuo, A., Lefebvre, SC., Maumus, F., Mayer, C., Miller, J., Monier, A., Salamov, A., Young, J., Aguilar, M., Claverie, J-M., Frickenhaus, S., Gonzalez, K., Herman, EK., Lin, Y-C., Napier, J., Ogata, H., Sarno, AF., Shmutz, J., Schroeder, D., de Vargas, C., Verret, F., von Dassow, P., Valentin, K., Van de Peer, Y., Wheeler, G., Dacks, JB., Delwiche, CF., Dyhrman, ST., Glöckner, G., John, U., Richards, T., Worden, AZ., Zhang, X. and Grigoriev, IV., (2013). Pan genome of the phytoplankton Emiliania underpins its global distribution. Nature. 499 (7457), 209-213

Chronopoulou, P-M., Fahy, A., Coulon, F., Païssé, S., Goñi-Urriza, M., Peperzak, L., Acuña Alvarez, L., McKew, BA., Lawson, T., Timmis, KN., Duran, R., Underwood, GJC. and McGenity, TJ., (2013). Impact of a simulated oil spill on benthic phototrophs and nitrogen-fixing bacteria in mudflat mesocosms. Environmental Microbiology. 15 (1), 242-252

Suggett, DJ., Dong, LF., Lawson, T., Lawrenz, E., Torres, L. and Smith, DJ., (2013). Light availability determines susceptibility of reef building corals to ocean acidification. Coral Reefs. 32 (2), 327-337

Suggett, DJ., Dong, LF., Lawson, T., Lawrenz, E., Torres, L. and Smith, DJ., (2013). Erratum to: Light availability determines susceptibility of reef building corals to ocean acidification. Coral Reefs. 32 (2), 339-339

Honey, DJ., Gledhill, M., Bibby, TS., Legiret, FE., Pratt, NJ., Hickman, AE., Lawson, T. and Achterberg, EP., (2013). Heme b in marine phytoplankton and particulate material from the North Atlantic Ocean. Marine Ecology Progress Series. 483, 1-17

Lawson, T., (2013). Preface. Journal of Experimental Botany. 64 (13), 3923-3924

Murchie, EH. and Lawson, T., (2013). Chlorophyll fluorescence analysis: a guide to good practice and understanding some new applications. Journal of Experimental Botany. 64 (13), 3983-3998

McAusland, L., Davey, PA., Kanwal, N., Baker, NR. and Lawson, T., (2013). A novel system for spatial and temporal imaging of intrinsic plant water use efficiency. Journal of Experimental Botany. 64 (16), 4993-5007

McKew, BA., Davey, P., Finch, SJ., Hopkins, J., Lefebvre, SC., Metodiev, MV., Oxborough, K., Raines, CA., Lawson, T. and Geider, RJ., (2013). The trade-off between the light-harvesting and photoprotective functions of fucoxanthin-chlorophyll proteins dominates light acclimation inEmiliania huxleyi(clone CCMP 1516). New Phytologist. 200 (1), 74-85

Bechtold, U., Albihlal, WS., Lawson, T., Fryer, MJ., Sparrow, PAC., Richard, F., Persad, R., Bowden, L., Hickman, R., Martin, C., Beynon, JL., Buchanan-Wollaston, V., Baker, NR., Morison, JIL., Schöffl, F., Ott, S. and Mullineaux, PM., (2013). Arabidopsis HEAT SHOCK TRANSCRIPTION FACTORA1b overexpression enhances water productivity, resistance to drought, and infection. Journal of Experimental Botany. 64 (11), 3467-3481

Lawson, T., Kramer, DM. and Raines, CA., (2012). Improving yield by exploiting mechanisms underlying natural variation of photosynthesis. Current Opinion in Biotechnology. 23 (2), 215-220

Suggett, DJ., Hall-Spencer, JM., Rodolfo-Metalpa, R., Boatman, TG., Payton, R., Tye Pettay, D., Johnson, VR., Warner, ME. and Lawson, T., (2012). Sea anemones may thrive in a high CO2 world. Global Change Biology. 18 (10), 3015-3025

Oxborough, K., Moore, CM., Suggett, DJ., Lawson, T., Chan, HG. and Geider, RJ., (2012). Direct estimation of functional PSII reaction center concentration and PSII electron flux on a volume basis: a new approach to the analysis of Fast Repetition Rate fluorometry (FRRf) data. Limnology and Oceanography: Methods. 10 (3), 142-154

BECHTOLD, ULRIKE., LAWSON, TRACY., MEJIA-CARRANZA, JAIME., MEYER, RHONDAC., BROWN, IANR., ALTMANN, THOMAS., TON, JURRIAAN. and MULLINEAUX, PHILIPM., (2010). Constitutive salicylic acid defences do not compromise seed yield, drought tolerance and water productivity in the Arabidopsis accession C24. Plant, Cell & Environment. 33 (11), 1959-1973

Lawson, T., (2009). Guard cell photosynthesis and stomatal function. New Phytologist. 181 (1), 13-34

Galvez-Valdivieso, G., Fryer, MJ., Lawson, T., Slattery, K., Truman, W., Smirnoff, N., Asami, T., Davies, WJ., Jones, AM., Baker, NR. and Mullineaux, PM., (2009). The High Light Response in Arabidopsis Involves ABA Signaling between Vascular and Bundle Sheath Cells. THE PLANT CELL ONLINE. 21 (7), 2143-2162

Lawson, T., Lefebvre, S., Baker, NR., Morison, JIL. and Raines, CA., (2008). Reductions in mesophyll and guard cell photosynthesis impact on the control of stomatal responses to light and CO2. Journal of Experimental Botany. 59 (13), 3609-3619

MORISON, JAMESIL. and LAWSON, TRACY., (2007). Does lateral gas diffusion in leaves matter?. Plant, Cell & Environment. 30 (9), 1072-1085

Morison, JIL., Lawson, T. and Cornic, G., (2007). Lateral CO2 Diffusion inside Dicotyledonous Leaves Can Be Substantial: Quantification in Different Light Intensities. PLANT PHYSIOLOGY. 145 (3), 680-690

Lawson, T. and Morison, J., (2006). Visualising patterns of CO2 diffusion in leaves. New Phytologist. 169 (4), 641-643

LAWSON, T., BRYANT, B., LEFEBVRE, S., LLOYD, JC. and RAINES, CA., (2006). Decreased SBPase activity alters growth and development in transgenic tobacco plants. Plant, Cell and Environment. 29 (1), 48-58

Lefebvre, S., (2005). Increased Sedoheptulose-1,7-Bisphosphatase Activity in Transgenic Tobacco Plants Stimulates Photosynthesis and Growth from an Early Stage in Development. PLANT PHYSIOLOGY. 138 (1), 451-460

Morison, JIL., (2005). Lateral Diffusion of CO2 in Leaves Is Not Sufficient to Support Photosynthesis. PLANT PHYSIOLOGY. 139 (1), 254-266

(2005). CORRECTION. PLANT PHYSIOLOGY. 138 (2), 1174-1174

Lefebvre, S., Lawson, T., Zakhleniuk, OV., Lloyd, JC. and Raines, CA., (2005). Increased sedoheptulose-1,7-bisphosphatase activity in transgenic tobacco plants stimulates photosynthesis and growth from an early stage in development. (vol 138, pg 451, 2005). PLANT PHYSIOLOGY. 138 (2), 1174-1174

von Caemmerer, S., Lawson, T., Oxborough, K., Baker, NR., Andrews, TJ. and Raines, CA., (2004). Stomatal conductance does not correlate with photosynthetic capacity in transgenic tobacco with reduced amounts of Rubisco. Journal of Experimental Botany. 55 (400), 1157-1166

Maple, J., Fujiwara, MT., Kitahata, N., Lawson, T., Baker, NR., Yoshida, S. and Møller, SG., (2004). GIANT CHLOROPLAST 1 Is Essential for Correct Plastid Division in Arabidopsis. Current Biology. 14 (9), 776-781

Lawson, T., (2003). The responses of guard and mesophyll cell photosynthesis to CO2, O2, light, and water stress in a range of species are similar. Journal of Experimental Botany. 54 (388), 1743-1752

Lawson, T., Craigon, J., Black, CR., Colls, JJ., Landon, G. and Weyers, JDB., (2002). Impact of elevated CO2 and O3 on gas exchange parameters and epidermal characteristics in potato (Solanum tuberosum L.). Journal of Experimental Botany. 53 (369), 737-746

Lawson, T., Oxborough, K., Morison, JIL. and Baker, NR., (2002). Responses of Photosynthetic Electron Transport in Stomatal Guard Cells and Mesophyll Cells in Intact Leaves to Light, CO2, and Humidity. PLANT PHYSIOLOGY. 128 (1), 52-62

Vandermeiren, K., Black, C., Lawson, T., Casanova, MA. and Ojanperä, K., (2002). Photosynthetic and stomatal responses of potatoes grown under elevated CO2 and/or O3—results from the European CHIP-programme. European Journal of Agronomy. 17 (4), 337-352

Vorne, V., Ojanperä, K., De Temmerman, L., Bindi, M., Högy, P., Jones, MB., Lawson, T. and Persson, K., (2002). Effects of elevated carbon dioxide and ozone on potato tuber quality in the European multiple-site experiment ‘CHIP-project’. European Journal of Agronomy. 17 (4), 369-381

Lawson, T., (2002). Responses of Photosynthetic Electron Transport in Stomatal Guard Cells and Mesophyll Cells in Intact Leaves to Light, CO2, and Humidity. PLANT PHYSIOLOGY. 128 (1), 52-62

Lawson, T., Craigon, J., Black, CR., Colls, JJ., Tulloch, A-M. and Landon, G., (2001). Effects of elevated carbon dioxide and ozone on the growth and yield of potatoes (Solanum tuberosum) grown in open-top chambers. Environmental Pollution. 111 (3), 479-491

Baker, NR., (2001). High resolution imaging of photosynthetic activities of tissues, cells and chloroplasts in leaves. Journal of Experimental Botany. 52 (356), 615-621

Donnelly, A., Lawson, T., Craigon, J., Black, CR., Colls, JJ. and Landon, G., (2001). Effects of elevated CO2 and O3 on tuber quality in potato (Solanum tuberosum L.). Agriculture, Ecosystems & Environment. 87 (3), 273-285

Lawson, T., Craigon, JIM., Tulloch, AM., Black, CR., Colls, JJ. and Landon, G., (2001). Photosynthetic responses to elevated CO2and O3in field-grown potato (Solanum tuberosum). Journal of Plant Physiology. 158 (3), 309-323

Lawson, T., Craigon, JIM., Tulloch, A-M., Black, CR., Colls, JJ. and Landon, G., (2001). Photosynthetic responses to elevated CO2and O3 in field-grown potato(Solanum tuberosum). Journal of Plant Physiology. 158 (3), 309-323

POOLE, I., LAWSON, T., WEYERS, JDB. and RAVEN, JA., (2000). Effect of elevated CO2 on the stomatal distribution and leaf physiology of Alnus glutinosa. New Phytologist. 145 (3), 511-521

Lawson, T. and Weyers, J., (1999). Spatial and temporal variation in gas exchange over the lower surface of Phaseolus vulgaris L. primary leaves. Journal of Experimental Botany. 50 (337), 1381-1391

Lawson, T., (1999). Spatial and temporal variation in gas exchange over the lower surface of Phaseolus vulgaris L. primary leaves. Journal of Experimental Botany. 50 (337), 1381-1391

Lawson, T., James, W. and Weyers, J., (1998). A surrogate measure of stomatal aperture. Journal of Experimental Botany. 49 (325), 1397-1403

Lawson, T., Weyers, J. and A'Brook, R., (1998). The nature of heterogeneity in the stomatal behaviour of Phaseolus vulgaris L. primary leaves. Journal of Experimental Botany. 49 (325), 1387-1395

Parsons, R., Weyers, JDB., Lawson, T. and Godber, IM., (1997). Rapid and straightforward estimates of photosynthetic characteristics using a portable gas exchange system. Photosynthetica. 34 (2), 265-279

Weyers, JDB. and Lawson, T., (1997). Heterogeneity in Stomatal Characteristics. Advances in Botanical Research. 26 (C), 317-352

Poole, I., Weyers, JDB., Lawson, T. and Raven, JA., (1996). Variations in stomatal density and index: implications for palaeoclimatic reconstructions. Plant, Cell and Environment. 19 (6), 705-712

ABE, TOSHIHIKO., LAWSON, TRACY., WEYERS, JONATHANDB. and CODD, GEOFFREYA., (1996). Microcystin-LR inhibits photosynthesis of Phaseolus vulgaris primary leaves: implications for current spray irrigation practice. New Phytologist. 133 (4), 651-658

Book chapters (6)

Lawson, T. and Vialet-Chabrand, S., (2018). Chlorophyll fluorescence imaging. In: Photosynthesis. Editors: Covshoff, S., . Springer. 121- 140. 978-1-4939-7785-7

Walker, BJ., Busch, FA., Driever, SM., Kromdijk, J. and Lawson, T., (2018). Survey of tools for measuring in vivo photosynthesis. In: Photosynthesis. Editors: Covshoff, S., . Springer. 3- 24. 978-1-4939-7785-7

Minguet-Parramona, C., Wang, Y., Hills, A., Vialet-Chabrand, S., Griffiths, H., Rogers, S., Lawson, T., Lew, V. and Blatt, MR., (2015). Emergent Oscillatory Properties in Modelling Ion Transport of Guard Cells. In: Rhythms in Plants. Springer International Publishing. 323- 342. 9783319205168

McAusland, L., Vialet-Chabrand, SRM., Matthews, JSA. and Lawson, T., (2015). Spatial and Temporal Responses in Stomatal Behaviour, Photosynthesis and Implications for Water-Use Efficiency. In: Rhythms in Plants. Springer International Publishing. 97- 119. 9783319205168

Mullineaux, PM. and Lawson, T., (2009). Measuring redox changes in vivo in leaves: prospects and technical challenges.. In: Redox-Mediated Signal Transduction: Methods and Protocols. Humana Press. 65- 75. 978-1617378027

Lawson, T. and Morison, JIL., (2004). Stomatal function and physiology. In: The Evolution of Plant Physiology. Elsevier. 217- 242. 9780123395528

Conferences (3)

Bretherton, L., Lawson, T., Moore, CM., Poulton, A., Geider, R. and Suggett, D., (2013). LIGHT AVAILABILITY AFFECTS THE OCEAN ACIDIFCATION RESPONSE IN COCCOLITHOPHORES

Suggett, DJ., Stambler, N., O, P., Kolber, Z., Quigg, A., Vázquez-Dominguez, E., Zohary, T., Berman, T., Iluz, D., Levitan, O., Lawson, T., Meeder, E., Lazar, B., Bar-Zeev, E., Medova, H. and Berman-Frank, I., (2009). Nitrogen and phosphorus limitation of oceanic microbial growth during spring in the Gulf of Aqaba

Lawson, T., Cornic, G. and Morision, J., (2007). Do homobaric and heterobaric leaves differ in internal lateral CO2 diffusion?

Grants and funding

2018

Phenotyping Thai rice photosynthesis for sustainable rice production

BRITISH COUNCIL

To develop an automated multi-channel gas exchange system capable of measuring plant photosynthesis for extended periods of time, unattended.

Innovate UK (formerly Technology Stategy Board)

RAINES 170309

Bill & Melinda Gates Foundation

2017

Intelligent LED lighting for maximised crop yield and reduced energy use

Technology STrategy Board

Intelligent LED lighting solution for maximised crop yields and reduced energy use

Innovate UK (formerly Technology Stategy Board)

Transforming India's Green Revolution by Research and Empowerment for Sustainable food Supplies

Biotechnology and Biological Sciences Research Council

2016

Disentangling plant-soil microbe-plant feedback loop interactions under soil drought stress conditions

ADC BioScientific Limited

PHOTOWHEAT: Exploiting variation in stomatal dynamics and ear photosynthesis to optimise wheat productivity.

Biotechnology & Biology Science Res.Council

Role of protein phosphorylation in maintenance of photosystem two activity

Biotechnology & Biology Science Res.Council

Identifying the mechanisms and resource use implications of acclimation to high-temperature in marine cyanobacteria

Natural Environment Research Council

2015

Development of a novel multiple gas exchange system for plant phentyping

ADC BioScientific Limited

15-IWYP Realising increased photosynthetic efficiency to increase wheat yield

Biotechnology & Biology Science Res.Council

Screening natural variation in stomatal responsiveness for increased transpiration and/ or CO2 assimilation

Bayer CropScience NV

15-IWYP - Wider and faster: high-throughout phenotypic exploration of novel genetic variation for breeding high biomass and yield in wheat

Biotechnology & Biology Science Res.Council

2014

Scaling up dynamic responses of stomatal to assess impacts on tree canopy carbon gain and water use efficency

Forest Research

2013

Stomatal-based Systems Analysis of Water Use Efficiency

Biotechnology & Biology Science Res.Council

OXYEVOL: Atmospheric oxygen as a driver in plant evolution over the past 400 million years

European Research Council

2012

Microbial degradation of isoprene in the terrestial environment

Natural Environment Research Council

2011

Manipulation of photosynthetic carbon metabolism in wheat to improve yield

Biotechnology & Biology Science Res.Council

Metabolic engineering to enhance photosynthesis based on empirical data and in silico modelling

Biotechnology & Biology Science Res.Council

2010

Ocean Acidification Impacts on Sea-Surface Biology

Natural Environment Research Council

Stomatal Function: Guard Cell Chloroplasts

Nuffield Foundation

2009

A Community Metabolism Approach - Coral Growth

Natural Environment Research Council

2007

Effect of light, CO2 and nutrient limitation on photosynthesis in marine diazotrophic cyanobacteria

Natural Environment Research Council

Contact

tlawson@essex.ac.uk
+44 (0) 1206 873327

Location:

3SW.5.47, Colchester Campus

More about me
Lawson Lab website: http://www.tlawsonlab.co.uk/