Premium
Effects of doubled atmospheric CO 2 concentration on the growth and photosynthesis of Chlamydomonas reinhardtii (Volvocales, Chlorophyceae)
Author(s) -
Yang Ying,
Gao Kunshan,
Xia Jianrong
Publication year - 2001
Publication title -
phycological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.438
H-Index - 44
eISSN - 1440-1835
pISSN - 1322-0829
DOI - 10.1046/j.1440-1835.2001.00253.x
Subject(s) - chlamydomonas reinhardtii , chlorophyceae , photosynthesis , photoinhibition , biology , darkness , chlamydomonas , botany , chlorophyta , photon flux , algae , photosystem ii , mutant , biochemistry , physics , photon , gene , quantum mechanics
SUMMARY The freshwater microalga, Chlamydomonas reinhardtii Dangeard, was cultured under 350 and 700 ppmv CO 2 to determine the impact of doubled atmospheric CO 2 concentration on its growth and photosynthesis. No significant difference was observed in the specific growth rate, photosynthetic efficiency, maximal net photo‐synthetic rate and light‐saturating point between the low and high CO 2 cultures. Both the low‐ and high‐CO 2 ‐grown cells showed reduced light‐dependent O 2 evolution rate and photochemical efficiency ( F v / F m ) owing to photoinhibition when exposed to high photon flux density. However, high‐CO 2 ‐grown cells were less photoinhibited, and showed better recovery in dim light or darkness during the initial period of the recovery process.