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EFFECT OF SODIUM AND NITRATE ON GROWTH OF ANABAENA FLOS‐AQUAE (CYANOPHYTA) 1
Author(s) -
Oleson Diane J.,
Makarewicz Joseph C.
Publication year - 1990
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 - 10.1111/j.0022-3646.1990.00593.x
Subject(s) - anabaena , cyanobacteria , nitrate , sodium nitrate , sodium , biology , nitrogen , botany , food science , nuclear chemistry , inorganic chemistry , bacteria , chemistry , ecology , organic chemistry , genetics
The growth response of a nitrogen fixing cyanobacterium, Anabaena flos‐aquae (Lyng) Bréb., to sodium and nitrate was examined in batch culture under controlled laboratory conditions. Sodium (range 0‐12 mg Na + · L ‐1 ) enhanced growth of the cyanobacterium under nitrate‐sufficient (5.7 mg NO 3 ‐N · L ‐1 ) but not nitrate‐limited (0.49 mg NO 3 ‐ N · L ‐1 ) conditions. The magnitude of the growth response was related to the nutritional history of the culture. No significant effect of sodium on nitrate utilization was observed. The increase in ambient sodium levels in many lakes may provide a competitive advantage to cyanobacteria.