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Some characteristics of two morphological mutants of Nostoc linckia induced by nitrosoguanidine
Author(s) -
Ladha J. K.,
Kumar H. D.
Publication year - 1977
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.19770170704
Subject(s) - heterocyst , mutant , nitrogenase , nostoc , biology , spore , phenotype , cyanobacteria , microbiology and biotechnology , botany , genetics , nitrogen fixation , bacteria , gene
The blue‐green alga Nostoc linckia was treated with nitrosoguanidine and two classes of morphological mutant clones were isolated. One class shows certain abnormal phenotypic features of vegetative cells, spores, and heterocysts. It has increased heterocyst frequency and impaired growth rate. The other class exhibits an altered heterocyst spacing pattern. Both classes of mutants have reduced nitrogenase activity.