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Effect of growth‐promoting chemicals on growth, nitrogen fixation and heterocyst frequency of a blue‐green alga
Author(s) -
Kapoor K.,
Sharma V. K.
Publication year - 1981
Publication title -
zeitschrift für allgemeine mikrobiologie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.58
H-Index - 54
eISSN - 1521-4028
pISSN - 0044-2208
DOI - 10.1002/jobm.19810210406
Subject(s) - nitrogen fixation , blue green algae , heterocyst , nitrogen , chemistry , biology , botany , nitrogenase , cyanobacteria , bacteria , genetics , organic chemistry
IAA Abbreviations used: IAA, indole‐3‐acetic acid; NAA, α‐naphthalene acetic acid; GA, Gibberellic acid; IPA, 3‐indole propionic acid; IBA, 3‐indole butyric acid; PAA, phenyl acetic acid was found to stimulate growth, nitrogen fixation and pigment synthesis in Anabaena doliolum in all concentrations tested. Heterocyst frequency was stimulated up to a concentration of 50 ppm IAA. NAA stimulated growth and nitrogen fixation up to 10 ppm. GA promoted growth, pigment synthesis, heterocyst frequency and nitrogen fixation only up to a concentration of 2 ppm. Kinetin promoted growth up to 100 ppm and synthesis of pigments, while nitrogen fixation was stimulated up to 5 ppm.