Effects of kinetics of light-induced stomatal responses on photosynthesis and water-use efficiency
| العنوان: | Effects of kinetics of light-induced stomatal responses on photosynthesis and water-use efficiency |
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| المؤلفون: | Phillip A. Davey, Lorna McAusland, Silvere Vialet-Chabrand, Tracy Lawson, Neil R. Baker, Oliver Brendel |
| المساهمون: | University of Essex, Ecologie et Ecophysiologie Forestières [devient SILVA en 2018] (EEF), Institut National de la Recherche Agronomique (INRA)-Université de Lorraine (UL) |
| المصدر: | New Phytologist New Phytologist, Wiley, 2016, 211 (4), pp.1209-1220. ⟨10.1111/nph.14000⟩ The New Phytologist |
| بيانات النشر: | HAL CCSD, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, Stomatal conductance, Time Factors, Light, Physiology, Kinetics, guard cells, Plant Science, Biology, Photosynthesis, 01 natural sciences, kinetics of stomatal responses, 03 medical and health sciences, chemistry.chemical_compound, Species Specificity, Guard cell, intrinsic water use efficiency, Botany, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, Water-use efficiency, Photons, photosynthesis, Full Paper, Research, Water, Full Papers, Carbon Dioxide, 030104 developmental biology, chemistry, stomatal conductance, Plant Stomata, Carbon dioxide, Light induced, Biophysics, Water use, 010606 plant biology & botany |
| الوصف: | International audience; Both photosynthesis (A) and stomatal conductance (gs) respond to changing irradiance, yet stomatal responses are an order of magnitude slower than photosynthesis, resulting in noncoordination between A and gs in dynamic light environments. Infrared gas exchange analysis was used to examine the temporal responses and coordination of A and gs to a step increase and decrease in light in a range of different species, and the impact on intrinsic water use efficiency was evaluated. The temporal responses revealed a large range of strategies to save water or maximize photosynthesis in the different species used in this study but also displayed an uncoupling of A and gs in most of the species. The shape of the guard cells influenced the rapidity of response and the overall gs values achieved, with different impacts on A and Wi. The rapidity of gs in dumbbell-shaped guard cells could be attributed to size, whilst in elliptical-shaped guard cells features other than anatomy were more important for kinetics. Our findings suggest significant variation in the rapidity of stomatal responses amongst species, providing a novel target for improving photosynthesis and water use. |
| اللغة: | English |
| تدمد: | 0028-646X 1469-8137 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9446c0ef4a883555bfb2944ea3c9e599Test https://hal.inrae.fr/hal-02638810Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....9446c0ef4a883555bfb2944ea3c9e599 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 0028646X 14698137 |
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