Effects of drought on photosynthesis in grapevines under field conditions: an evaluation of stomatal and mesophyll limitations

Functional Plant Biology : FPB
J FlexasH Medrano

Abstract

The effect of diffusional and photochemical limitations to photosynthesis was assessed in field-grown water-stressed grapevines (Vitis vinifera L.) by combined measurements of gas exchange and chlorophyll fluorescence. Drought was slowly induced, and the progressive decline of photosynthesis was examined in different grapevine cultivars along a continuous gradient of maximum mid-morning values of stomatal conductance (g), which were used as an integrative indicator of the water-stress conditions endured by the leaves. Initial decreases of g were accompanied by decreases of substomatal CO2 concentration (Ci), the estimated chloroplastic CO2 concentration (Cc) and net photosynthesis (AN), while electron transport rate (ETR) remained unaffected. With increasing drought, g, AN, Ci and Cc further decreased, accompanied by slight decreases of ETR and of the estimated mesophyll conductance (gmes). Severe drought led to strong reductions of both g and gmes, as well as of ETR. The apparent carboxylation efficiency and the compensation point for CO2 remained unchanged under severe drought when analysed on a Cc, rather than a Ci, basis, suggesting that previously reported metabolic impairment was probably due to decreased gmes.

Citations

Mar 20, 2019·Plant Signaling & Behavior·Paula Da Fonseca-PereiraWagner L Araújo
Mar 16, 2017·The New Phytologist·Yusuke OnodaMark Westoby
Oct 3, 2006·The Plant Journal : for Cell and Molecular Biology·Jaume FlexasRalf Kaldenhoff
Apr 28, 2009·Journal of Experimental Botany·Ulo NiinemetsCharles R Warren
Jul 15, 2009·Journal of Experimental Botany·Zhenzhu XuHideyuki Shimizu
Jan 29, 2011·Journal of Experimental Botany·Ehsan TavakkoliGlenn K McDonald
May 27, 2010·Journal of Experimental Botany·Christopher P BickfordNate G McDowell
Mar 11, 2011·Plant, Cell & Environment·Gregorio EgeaAntonio Diaz-Espejo
Feb 26, 2019·Planta·A SongyF Fontaine
May 31, 2019·Journal of Experimental Botany·Qingjie DuJianming Li
Oct 2, 2019·The Plant Journal : for Cell and Molecular Biology·Rangjian Qiu, Gabriel G Katul
Nov 1, 2011·Functional Plant Biology : FPB·Maryline Magnin-RobertFlorence Fontaine
Feb 1, 2015·Functional Plant Biology : FPB·Fatemeh RazzaghiMathias Neumann Andersen
Apr 1, 2008·Photosynthesis Research·Norma de Magalhães ErismannMaria Luiza Sant' Anna Tucci
Aug 27, 2010·Journal of the Science of Food and Agriculture·Anirban GuhaAttipalli Ramachandra Reddy
Nov 18, 2008·Annals of Botany·Nelson J M SaiboMaria Margarida Oliveira
May 26, 2009·Journal of Experimental Botany·Zbynek MalenovskýLadislav Nedbal
Aug 6, 2013·Journal of Experimental Botany·E H Murchie, T Lawson
Feb 11, 2016·PloS One·Giuseppe SorrentinoMauro Centritto

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