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PHOTOSYNTHETIC BICARBONATE UTILIZATION BY A TERRESTRIAL CYANOBACTERIUM, NOSTOC FLAGELLIFORME (CYANOPHYCEAE)
Author(s) -
Gao Kunshan,
Zou Dinghui
Publication year - 2001
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1046/j.1529-8817.2001.01039.x
Subject(s) - bicarbonate , nostoc , photosynthesis , biology , cyanobacteria , total inorganic carbon , botany , carbon dioxide , ecology , bacteria , genetics , endocrinology
The photosynthetic characteristics of the terrestrial cyanobacterium, Nostoc flagelliforme , after complete recovery by rewetting, was investigated to see whether it could use bicarbonate as the external inorganic carbon source when submerged. The photosynthesis–pH relationship and high pH compensation point suggested that the terrestrial alga could use bicarbonate to photosynthesize when submerged. The photosynthetic oxygen evolution rates were significantly inhibited in Na + ‐free and Na + + Li + media but were not affected by the absence of Cl − , implying that the bicarbonate uptake was associated with Na + / HCO 3 − symport rather than Cl − /HCO 3 − exchange system.