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国际藻类期刊
SJR: 0.216 SNIP: 0.322 CiteScore™: 0.4

ISSN 打印: 1521-9429
ISSN 在线: 1940-4328

国际藻类期刊

DOI: 10.1615/InterJAlgae.v13.i2.90
pages 193-202

Response of the Tolypothrix scytonemoides (Gardner) Geitler (Cyanophyta) to Different pH

Uma Maheshwari Rajendran
Center for Advanced Studies in Botany, University of Madras Guindy Campus, Chennai-600 025, India
Elango Kathirvel
Center for Advanced Studies in Botany, University of Madras Guindy Campus, Chennai - 600 025, India
Anand Narayanaswamy
Center for Advanced Studies in Botany, University of Madras Guindy Campus, Chennai - 600 025, India

ABSTRACT

Cells of Tolypothrix scytonemoides grown at pH 8.5 had highest chlorophyll a content but total protein content, phycobilin pigments and rates of photosynthesis and respiration were highest in the control. Nitrogenase activity was highest at pH 6.5 but glutamine synthetase activity was more in cells grown at pH 8.5. Release of ammonia was enhanced at pH 10.5 while the release of carbohydrates was greatest in cells grown in unbuffered medium. Polypeptides of ∼50 and 36 kDa were detected only in cells grown at pH 9.5.


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