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Gas exchange and hydraulics during drought in crops: Who drives whom?


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Flexas, J, Carriqui, M ORCID: 0000-0002-0153-2602 and Nadal, M 2018 , 'Gas exchange and hydraulics during drought in crops: Who drives whom?' , Journal of Experimental Botany, vol. 69, no. 16 , pp. 3791-3795 , doi: 10.1093/jxb/ery235.

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The correlation between stomatal, mesophyll and leaf hydraulic conductance (Kleaf), and the timing of each during regulation under drought, are not fully understood. Studies which make precise, parallel measurement of these variables during progressive imposition of drought are needed. Wang et al. (2018) provide novel insights, showing that, in rice, a decline of Kleaf is the earliest response to decreasing water availability, and they propose that it triggers the later decline of stomatal and mesophyll conductance. Comparison with results from other species intensifies the debate about the relationships between these variables, as well as between photosynthesis (i.e. productivity) and hydraulic failure (death).

Item Type: Article
Authors/Creators:Flexas, J and Carriqui, M and Nadal, M
Keywords: drought stress, gas exchange, leaf hydraulics, mesophyll conductance, photosynthesis, stomatal conductance
Journal or Publication Title: Journal of Experimental Botany
Publisher: Oxford Univ Press
ISSN: 0022-0957
DOI / ID Number: 10.1093/jxb/ery235
Copyright Information:

© The Author(s) 2018. Published by Oxford University Press on behalf of the Society for Experimental Biology. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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