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PROPERTIES OF MICROCYSTIS AERUGINOSA AND M. FLOS‐AQUAE (CYANOPHYTA) IN CULTURE: TAXONOMIC IMPLICATIONS 1
Author(s) -
Doers Mary P.,
Parker Dorothy L.
Publication year - 1988
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.1529-8817.1988.tb04254.x
Subject(s) - mucilage , microcystis aeruginosa , biology , botany , flos , mutant , cyanobacteria , microbiology and biotechnology , bacteria , biochemistry , genetics , gene , rutin , antioxidant
Cultures were cloned from a sample containing Microcystis aeruginosa, M. flos‐aquae and a few morphological intermediates. The M. aeruginosa cultures remained distinct from the M. flos‐aquae cultures in (a) cell size, (b) cell aggregation pattern, (c) width of the mucilage surrounding the multicellular colonies, (d) sharpness of the mucilage boundary, (e) efect of 0.1–1.0 μM calcium chloride on the disaggregation of multicellular colonies, (f) frequency of mucilage mutants and (g) colony morphology on agar media. No M. flos‐aquae culture produced morphs resembling M. aeruginosa, inconsistent with proposals that M. flos‐aquae is a developmental stage or environmentally‐induced variant of M. aeruginosa. After longterm cultivation, but not soon after origanal isolation, several M. aeruginosa cultures contained mutants with diminished mucilage production and an altered colony shape.