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Metabolic acclimation to excess light intensity in C hlamydomonas reinhardtii
Author(s) -
DAVIS MARIA C.,
FIEHN OLIVER,
DURNFORD DION G.
Publication year - 2013
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/pce.12071
Subject(s) - chlamydomonas reinhardtii , photorespiration , metabolome , acclimatization , chlamydomonas , photosynthesis , light intensity , biology , biophysics , metabolism , botany , biochemistry , chemistry , gene , mutant , metabolite , physics , optics
In an effort to understand the role of metabolism in photoacclimation in Chlamydomonas reinhardtii , we used NMR and GC‐MS to assess changes in the aqueous metabolome following a shift to excess light. Amino acid pool sizes increased significantly in response to high light along with pathways downstream of photorespiration. Our results suggest metabolism is pliable, has a critical role in coping with the energetic imbalance during excess light exposure, and a necessary adjustment to support an increased growth rate that is an effective energy sink for the excess reducing power generated during light stress.