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@ARTICLE{Gouws:45875,
author = {Gouws, L. M. and Osmond, C. B. and Schurr, U. and Walter,
A.},
title = {{D}istinctive diel growth cycles in leaves and cladodes of
{CAM} plants: complex interactions with substrate
availability, turgor and cytoplasmic p{H}},
journal = {Functional plant biology},
volume = {32},
issn = {1445-4408},
address = {Collingwood, Victoria},
publisher = {CSIRO Publ.},
reportid = {PreJuSER-45875},
pages = {421 - 428},
year = {2005},
note = {Record converted from VDB: 12.11.2012},
abstract = {Distinct diel rhythms of leaf and cladode expansion growth
were obtained in crassulacean acid metabolism (CAM) plants
under water-limited conditions, with maxima at mid-day
during phase III of CO2 assimilation. This pattern coincided
with the availability of CO2 for photosynthesis and growth
during the decarboxylation of malic acid, with maximum cell
turgor due to the nocturnally accumulated malic acid, and
with the period of low cytoplasmic pH associated with malic
acid movement from vacuole to cytosol. Maximum growth rates
were generally only $20\%$ of those in C-3 plants and were
reached at a different time of the day compared with C-3
plants. The results suggest that malic acid, as a source of
carbohydrates, and a determinant of turgor and cytoplasmic
pH, plays a major role in the control of diel growth
dynamics in CAM plants under desert conditions. The observed
plasticity in phasing of growth rhythms under situations of
differing water availability suggests that a complex network
of factors controls the diel growth patterns in CAM plants
and needs to be investigated further.},
keywords = {J (WoSType)},
cin = {ICG-III},
ddc = {580},
cid = {I:(DE-Juel1)VDB49},
pnm = {Chemie und Dynamik der Geo-Biosphäre},
pid = {G:(DE-Juel1)FUEK257},
shelfmark = {Plant Sciences},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000229373900006},
doi = {10.1071/FP05074},
url = {https://juser.fz-juelich.de/record/45875},
}