Transient shade and drought have divergent impacts on the temperature sensitivity of dark respiration in leaves of Geum urbanum

Functional Plant Biology : FPB
Martijn SlotOwen K Atkin

Abstract

The respiratory response of plants to temperature is a critical biotic feedback in the study of global climate change. Few studies, however, have investigated the effects of environmental stresses on the short-term temperature response of dark respiration (Rdark) at the leaf level. We investigated the effect of shade and transient drought on the temperature sensitivity (Q10; the proportional increase in respiration per 10°C increase in temperature) of Rdark of Geum urbanum L. in controlled experiments. Shade effects were most pronounced following sustained, near-darkness, when rates of leaf Rdark at a set measuring temperature (25°C) and the Q10 of Rdark were both reduced. By contrast, rates of leaf Rdark and the Q10 of Rdark both increased in response to the onset of severe water stress. Water stress was associated with a rapid (but reversible) decline in rates of light-saturated photosynthesis (Psat), stomatal closure (gs) and progressive wilting. Re-watering resulted in a rapid recovery of Psat, gs and a decline in the Q10 of Rdark (due to larger proportional reductions in the rate of Rdark measured at 25°C compared with those measured at 14°C). The concentration of soluble sugars in leaves did not decline during drought (5-...Continue Reading

References

Jul 25, 2003·Trends in Plant Science·Owen K Atkin, Mark G Tjoelker
Aug 30, 2005·Plant Physiology·Miquel Ribas-CarboJaume Flexas
Mar 4, 2006·Oecologia·Bettina M J EngelbrechtThomas A Kursar
Apr 29, 2006·Science·Anthony W KingStan D Wullschleger
Dec 1, 1984·Plant Physiology·K J McCreeS G Richardson
Feb 1, 1987·Plant Physiology·B GentyJ B Da Silva
Oct 27, 2007·Proceedings of the National Academy of Sciences of the United States of America·Josep G CanadellGregg Marland
May 1, 1991·Ecological Applications : a Publication of the Ecological Society of America·Michael G Ryan
Oct 1, 2002·Functional Plant Biology : FPB·Jaume Flexas, Hipólito Medrano

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Citations

Dec 22, 2010·Journal of Experimental Botany·C Pinheiro, M M Chaves
Jun 1, 2015·Functional Plant Biology : FPB·Martijn Slot, Kaoru Kitajima
Jan 3, 2013·The New Phytologist·Alexander W Cheesman, Klaus Winter
Jan 13, 2011·The New Phytologist·Jörg KruseMark A Adams
Dec 1, 2011·Functional Plant Biology : FPB·Jes S Rodr Guez-CalcerradaSerge Rambal
Jan 13, 2015·The New Phytologist·Owen K AtkinJoana Zaragoza-Castells
Oct 29, 2020·The New Phytologist·Myriam MujawamariyaMirindi Eric Dusenge
Feb 4, 2021·Plant, Cell & Environment·Andrew P ScafaroOwen K Atkin

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