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@ARTICLE{Bonente:22170,
author = {Bonente, G. and Pippa, S. and Castellano, S. and Bassi, R.
and Ballottari, M.},
title = {{A}cclimation of {C}hlamydomonas reinhardtii to different
growth irradiances},
journal = {The journal of biological chemistry},
volume = {287},
issn = {0021-9258},
address = {Bethesda, Md.},
publisher = {Soc.},
reportid = {PreJuSER-22170},
pages = {5833 - 5847},
year = {2012},
note = {This work was supported by European Union Project 245070
FP7-KBBE-2009-3 SUNBIOPATH.},
abstract = {We report on the changes the photosynthetic apparatus of
Chlamydomonas reinhardtii undergoes upon acclimation to
different light intensity. When grown in high light, cells
had a faster growth rate and higher biomass production
compared with low and control light conditions. However,
cells acclimated to low light intensity are indeed able to
produce more biomass per photon available as compared with
high light-acclimated cells, which dissipate as heat a large
part of light absorbed, thus reducing their photosynthetic
efficiency. This dissipative state is strictly dependent on
the accumulation of LhcSR3, a protein related to
light-harvesting complexes, responsible for nonphotochemical
quenching in microalgae. Other changes induced in the
composition of the photosynthetic apparatus upon high light
acclimation consist of an increase of carotenoid content on
a chlorophyll basis, particularly zeaxanthin, and a major
down-regulation of light absorption capacity by decreasing
the chlorophyll content per cell. Surprisingly, the antenna
size of both photosystem I and II is not modulated by
acclimation; rather, the regulation affects the PSI/PSII
ratio. Major effects of the acclimation to low light consist
of increased activity of state 1 and 2 transitions and
increased contributions of cyclic electron flow.},
keywords = {Adaptation, Physiological: radiation effects /
Chlamydomonas reinhardtii: growth $\&$ development /
Chlamydomonas reinhardtii: metabolism / Chlamydomonas
reinhardtii: physiology / Chlamydomonas reinhardtii:
radiation effects / Darkness / Dose-Response Relationship,
Radiation / Electron Transport: radiation effects / Light /
Light-Harvesting Protein Complexes: metabolism /
Photosynthesis: radiation effects / Photosystem I Protein
Complex: metabolism / Photosystem II Protein Complex:
metabolism / Pigments, Biological: metabolism /
Light-Harvesting Protein Complexes (NLM Chemicals) /
Photosystem I Protein Complex (NLM Chemicals) / Photosystem
II Protein Complex (NLM Chemicals) / Pigments, Biological
(NLM Chemicals) / J (WoSType)},
cin = {IBG-2},
ddc = {570},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {Terrestrische Umwelt / SUNBIOPATH - Towards a better
sunlight to biomass conversion efficiency in microalgae
(245070)},
pid = {G:(DE-Juel1)FUEK407 / G:(EU-Grant)245070},
shelfmark = {Biochemistry $\&$ Molecular Biology},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:22205699},
pmc = {pmc:PMC3285353},
UT = {WOS:000300638000058},
doi = {10.1074/jbc.M111.304279},
url = {https://juser.fz-juelich.de/record/22170},
}