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@ARTICLE{Luo:5786,
author = {Luo, F.-L. and Nagel, K. A. and Zeng, B. and Schurr, U. and
Matsubara, S.},
title = {{P}hotosynthetic acclimation is important for
post-submergence recovery of photosynthesis and growth in
two riparian species},
journal = {Annals of botany},
volume = {104},
issn = {0305-7364},
address = {Oxford},
publisher = {Oxford University Press},
reportid = {PreJuSER-5786},
pages = {1435 - 1444},
year = {2009},
note = {F.-L. L. was supported by a PhD scholarship from the
Deutsche Akademische Austausch Dienst. We thank Beate Uhlig
(Institut fur Phytosphare, Forschungszentrum Julich GmbH)
for help with plant cultivation and harvesting. Two
anonymous referees and the Handling Editor (Tim Colmer)
provided valuable comments.},
abstract = {Concomitant increases in O(2) and irradiance upon
de-submergence can cause photoinhibition and photo-oxidative
damage to the photosynthetic apparatus of plants. As energy
and carbohydrate supply from photosynthesis is needed for
growth, it was hypothesized that post-submergence growth
recovery may require efficient photosynthetic acclimation to
increased O(2) and irradiance to minimize photo-oxidative
damage. The hypothesis was tested in two flood-tolerant
species: a C(3) herb, Alternanthera philoxeroides; and a
C(4) grass, Hemarthria altissima. The impact of low O(2) and
low light, typical conditions in turbid floodwater, on
post-submergence recovery was assessed by different flooding
treatments combined with shading.Experiments were conducted
during 30 d of flooding (waterlogging or submergence) with
or without shading and subsequent recovery of 20 d under
growth conditions. Changes in dry mass, number of
branches/tillers, and length of the longest internodes and
main stems were recorded to characterize growth responses.
Photosynthetic parameters (photosystem II efficiency and
non-photochemical quenching) were determined in mature
leaves based on chlorophyll a fluorescence measurements.In
both species growth and photosynthesis recovered after the
end of the submergence treatment, with recovery of
photosynthesis (starting shortly after de-submergence)
preceding recovery of growth (pronounced on days 40-50). The
effective quantum yield of photosystem II and
non-photochemical quenching were diminished during
submergence but rapidly increased upon de-submergence.
Similar changes were found in all shaded plants, with or
without flooding. Submerged plants did not suffer from
photoinhibition throughout the recovery period although
their growth recovery was retarded.After sudden
de-submergence the C(3) plant A. philoxeroides and the C(4)
plant H. altissima were both able to maintain the
functionality of the photosynthetic apparatus through rapid
acclimation to changing O(2) and light conditions. The
ability for photosynthetic acclimation may be essential for
adaptation to wetland habitats in which water levels
fluctuate.},
keywords = {Acclimatization / Amaranthaceae: anatomy $\&$ histology /
Amaranthaceae: physiology / Floods / Light / Oxygen:
physiology / Photosynthesis / Plant Roots: anatomy $\&$
histology / Plant Shoots: anatomy $\&$ histology / Poaceae:
anatomy $\&$ histology / Poaceae: physiology / Water:
physiology / Water (NLM Chemicals) / Oxygen (NLM Chemicals)
/ J (WoSType)},
cin = {ICG-3},
ddc = {580},
cid = {I:(DE-Juel1)ICG-3-20090406},
pnm = {Terrestrische Umwelt},
pid = {G:(DE-Juel1)FUEK407},
shelfmark = {Plant Sciences},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:19854720},
pmc = {pmc:PMC2778401},
UT = {WOS:000272079600017},
doi = {10.1093/aob/mcp257},
url = {https://juser.fz-juelich.de/record/5786},
}