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@ARTICLE{Walter:14443,
author = {Walter, J. and Nagy, L. and Hein, R. and Rascher, U. and
Beierkuhnlein, C. and Willner, E. and Jentsch, A.},
title = {{D}o plants remember drought? {H}ints towards a
drought-memory in grasses},
journal = {Environmental and experimental botany},
volume = {71},
issn = {0098-8472},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {PreJuSER-14443},
pages = {34 - 40},
year = {2011},
note = {Many thanks to all interns, who assisted with the
measurements, in particular Ines Pastor. We thank Prof. W.
Beyschlag and Jun. Prof. Christiane Werner-Pinto of the
University of Bielefeld and Prof. J. Tenhunen of the
University of Bayreuth for providing us with their PAMs.
Many thanks to Dr. H. Auge of the Helmholtz Centre for
Environmental Research in Halle, for providing us with the
LI-6400. Thanks to Reinhold Stahlmann and several technical
assistants for their help. This work was kindly supported by
the Helmholtz Impulse and Networking Fund through the
Helmholtz Interdisciplinary Graduate School for
Environmental Research (HIGRADE). Thanks to the anonymous
reviewers for helping to improve the manuscript.},
abstract = {The frequency of extreme drought events is projected to
increase under global climate change, causing damage to
plants and crop yield despite potential acclimation. We
investigated whether grasses remain acclimated to drought
even after a harvest and remember early summer drought
exposure over a whole vegetation period. For this, we
compared the response of Arrhenatherum elatius plants under
a second, late, drought (they were pre-exposed to an early
drought before), to plants exposed to a single, only late,
extreme drought. Surprisingly, the percentage of living
biomass after a late drought increased for plants that were
exposed to drought earlier in the growing season compared to
single-stressed plants, even after harvest and resprouting
after the first drought. Relative leaf water content did not
differ between the two treatments. Net photosynthesis was
non-significantly reduced by $25\%$ in recurrent drought
treatment. Maximum quantum efficiency (F-v/F-m)and maximum
fluorescence (F-m) were reduced in plants that were exposed
to recurrent drought. These findings indicated improved
photoprotection in double-stressed plants. Our results
provide first hints towards a "drought memory" over an
entire vegetation period, even after harvest and
resprouting. However, the advantage of improved
photoprotection might also cause reductions in
photosynthesis that could have adverse effects on crop yield
under more severe or longer droughts. (C) 2010 Elsevier B.V.
All rights reserved.},
keywords = {J (WoSType)},
cin = {IBG-2},
ddc = {580},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {Terrestrische Umwelt},
pid = {G:(DE-Juel1)FUEK407},
shelfmark = {Plant Sciences / Environmental Sciences},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000287054200005},
doi = {10.1016/j.envexpbot.2010.10.020},
url = {https://juser.fz-juelich.de/record/14443},
}