Control of transpiration by radiation.

Proceedings of the National Academy of Sciences of the United States of America
Roland PieruschkaJoseph A Berry

Abstract

The terrestrial hydrological cycle is strongly influenced by transpiration--water loss through the stomatal pores of leaves. In this report we present studies showing that the energy content of radiation absorbed by the leaf influences stomatal control of transpiration. This observation is at odds with current concepts of how stomata sense and control transpiration, and we suggest an alternative model. Specifically, we argue that the steady-state water potential of the epidermis in the intact leaf is controlled by the difference between the radiation-controlled rate of water vapor production in the leaf interior and the rate of transpiration. Any difference between these two potentially large fluxes is made up by evaporation from (or condensation on) the epidermis, causing its water potential to pivot around this balance point. Previous work established that stomata in isolated epidermal strips respond by opening with increasing (and closing with decreasing) water potential. Thus, stomatal conductance and transpiration rate should increase when there is condensation on (and decrease when there is evaporation from) the epidermis, thus tending to maintain homeostasis of epidermal water potential. We use a model to show that such ...Continue Reading

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Citations

Nov 29, 2012·Nature Communications·Hugo Jan de BoerStefan C Dekker
Aug 31, 2011·Proceedings of the National Academy of Sciences of the United States of America·Phong V V LeDarren T Drewry
Nov 23, 2011·Proceedings of the National Academy of Sciences of the United States of America·Keith A Mott, David Peak
Dec 18, 2010·Science·Tim J Brodribb, Scott A M McAdam
Oct 12, 2013·Journal of Theoretical Biology·Fulton E RockwellAbraham D Stroock
Sep 10, 2013·Journal of Theoretical Biology·Fulton E RockwellAbraham D Stroock
Mar 7, 2013·Journal of Integrative Plant Biology·William J LucasPradeep Kachroo
Dec 25, 2010·The New Phytologist·I Colin PrenticeGuohong Wang
Oct 1, 2010·Plant, Cell & Environment·David Peak, Keith A Mott
Jan 23, 2015·Global Change Biology·Mengtian HuangYingping Wang
Sep 10, 2010·Bio Systems·Mabrouk A El-Sharkawy
Jan 27, 2015·Annual Review of Plant Biology·Carl J Bernacchi, Andy VanLoocke
Sep 23, 2014·International Journal of Phytoremediation·Augustine I Doronila, Michael A Forster
Jun 23, 2016·The New Phytologist·John S SperryWilliam T Pockman
Oct 16, 2016·Plant, Cell & Environment·M M BarbourT N Buckley
Feb 7, 2019·American Journal of Botany·Alana R O Chin, Stephen C Sillett
Mar 17, 2019·Plants·Mirwais M QaderiSage L Dixon
May 10, 2019·The New Phytologist·Thomas N Buckley
Nov 5, 2019·Plant, Cell & Environment·Elena GrandaVíctor Resco de Dios
Feb 18, 2020·The New Phytologist·Charlotte GrossiordNate G McDowell
May 27, 2020·Biochemical Society Transactions·Martina KlejchováMichael R Blatt
Oct 1, 2015·Annals of Botany·Ulrich Kutschera, Winslow R Briggs
Apr 4, 2018·Proceedings of the National Academy of Sciences of the United States of America·Léo LemordantJacob Scheff
Feb 28, 2014·Plant Physiology·Fulton Ewing RockwellAbraham Duncan Stroock
Aug 9, 2021·The Science of the Total Environment·Huaiwei SunWenxin Zhang

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