Assessing the Effects of Water Deficit on Photosynthesis Using Parameters Derived from Measurements of Leaf Gas Exchange and of Chlorophyll a Fluorescence

Frontiers in Plant Science
Laurent UrbanLuc P R Bidel

Abstract

Water deficit (WD) is expected to increase in intensity, frequency and duration in many parts of the world as a consequence of global change, with potential negative effects on plant gas exchange and growth. We review here the parameters that can be derived from measurements made on leaves, in the field, and that can be used to assess the effects of WD on the components of plant photosynthetic rate, including stomatal conductance, mesophyll conductance, photosynthetic capacity, light absorbance, and efficiency of absorbed light conversion into photosynthetic electron transport. We also review some of the parameters related to dissipation of excess energy and to rerouting of electron fluxes. Our focus is mainly on the techniques of gas exchange measurements and of measurements of chlorophyll a fluorescence (ChlF), either alone or combined. But we put also emphasis on some of the parameters derived from analysis of the induction phase of maximal ChlF, notably because they could be used to assess damage to photosystem II. Eventually we briefly present the non-destructive methods based on the ChlF excitation ratio method which can be used to evaluate non-destructively leaf contents in anthocyanins and flavonols.

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Citations

Dec 14, 2019·Molecular Ecology·Mariana Vargas CruzAnete Pereira de Souza
Dec 19, 2019·Frontiers in Plant Science·Miriam RuoccoGabriele Procaccini
Feb 13, 2019·Frontiers in Plant Science·Lidia López-SerranoÁngeles Calatayud
Apr 4, 2021·Plant Physiology and Biochemistry : PPB·Radia LourkistiJérémie Santini
Jul 25, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Ilektra SperdouliMichael Moustakas
Aug 22, 2021·Trends in Plant Science·Dawei SunHaiyan Cen

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