Tracy Lawson
University of Essex
PhotosynthesisEcologyStomatal conductanceBotanyBiology
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Publications 138
#1Tracy Lawson (University of Essex)H-Index: 38
#2Jack S.A. Matthews (University of Essex)H-Index: 7
The control of gaseous exchange between the leaf and external atmosphere is governed by stomatal conductance (gs); therefore, stomata play a critical role in photosynthesis and transpiration and ov...
2 CitationsSource
#1Niaz AhmadH-Index: 8
#2Muhammad Omar KhanH-Index: 1
Last. Peter J. NixonH-Index: 42
view all 8 authors...
The plastid terminal oxidase (PTOX) – an interfacial diiron carboxylate protein found in the thylakoid membranes of chloroplasts – oxidizes plastoquinol and reduces molecular oxygen to water. It is believed to play a physiologically important role in the response of some plant species to light and salt (NaCl) stress by diverting excess electrons to oxygen thereby protecting photosystem II (PSII) from photodamage. PTOX is therefore a candidate for engineering stress tolerance in crop plants. Prev...
#1Silvere Vialet-Chabrand (University of Essex)H-Index: 11
#2Tracy Lawson (University of Essex)H-Index: 38
Although thermography allows rapid, non-invasive measurements of large numbers of plants, it has not been used extensively due to the difficulty in deriving biologically relevant information such as leaf transpiration (E) and stomatal conductance (gsw) from thermograms. Methods normalizing leaf temperature using temperatures from reference materials (e.g. with and without evaporative flux) to generate stress indices are generally preferred due to their ease of use to assess plant water status. H...
2 CitationsSource
#1Jack S.A. Matthews (University of Essex)H-Index: 7
#2Silvere Vialet-Chabrand (University of Essex)H-Index: 11
Last. Tracy Lawson (University of Essex)H-Index: 38
view all 3 authors...
Plants experience changes in light intensity and quality due to variations in solar angle and shading from clouds and overlapping leaves. Stomatal opening to increasing irradiance is often an order of magnitude slower than photosynthetic responses, which can result in CO2 diffusional limitations on leaf photosynthesis, as well as unnecessary water loss when stomata continue to open after photosynthesis has reached saturation. Stomatal opening to light is driven by two distinct pathways; the 'red...
3 CitationsSource
#1John R. Evans (ANU: Australian National University)H-Index: 62
#2Tracy Lawson (University of Essex)H-Index: 38
#1Michele Faralli (University of Essex)H-Index: 1
#2Tracy Lawson (University of Essex)H-Index: 38
Raising crop yield potential is a major goal to ensure food security for the growing global population. Photosynthesis is the primary determinant of crop productivity and any gain in photosynthetic CO2 assimilation per unit of leaf area (A) has the potential to increase yield. Significant intraspecific variation in A is known to exist in various autotrophic organs that represent an unexploited target for crop improvement. However, the large number of factors that influence photosynthetic rates o...
#1Andrew J. SimkinH-Index: 24
#2Michele Faralli (University of Essex)H-Index: 1
Last. Tracy Lawson (University of Essex)H-Index: 38
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Photosynthesis is currently a focus for crop improvement, however the majority of this work has taken place and been assessed in leaves, whilst limited consideration has been given to the contribution that other green tissues make to whole plant carbon assimilation. The major focus of this review is to evaluate the impact of non‐foliar photosynthesis on carbon use efficiency and total assimilation. Here we appraise and summarise past and current literature on the substantial contribution of diff...
2 CitationsSource
#1Tracy Lawson (University of Essex)H-Index: 38
#2Jaume FlexasH-Index: 68
1 CitationsSource
#1Patricia E. Lopez-Calcagno (University of Essex)H-Index: 7
#2Kenny Lee BrownH-Index: 1
Last. Christine A. RainesH-Index: 40
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Previous studies have demonstrated that independent stimulation of either electron transport or RuBP regeneration can increase the rate of photosynthetic carbon assimilation and plant biomass. In this paper, we present evidence that a multi-gene approach to simultaneously manipulate these two processes provides a further stimulation of photosynthesis. We report on the introduction of the cyanobacterial bifunctional enzyme fructose-1,6-bisphosphatase/sedoheptulose-1,7-bisphosphatase or overexpres...
#1William F. Falco (UFGD: Universidade Federal da Grande Dourados)H-Index: 4
#2Marisa D. Scherer (UFMS: Federal University of Mato Grosso do Sul)H-Index: 5
Last. Anderson Rodrigues Lima Caires (University of Essex)H-Index: 1
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Abstract Nanotechnology is an emerging field in science and engineering, which presents significant impacts on the economy, society and the environment. The nanomaterials’ (NMs) production, use, and disposal is inevitably leading to their release into the environment where there are uncertainties about its fate, behaviour, and toxicity. Recent works have demonstrated that NMs can penetrate, translocate, and accumulate in plants. However, studies about the effects of the NMs on plants are still l...