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NEW TAXONOMIC CRITERIA IN CLASSIFICATION OF CHLOROCOCCUM SPECIES. II. PYRENOID FINE STRUCTURE 2
Author(s) -
Brown R. Malcolm,
McLean Robert J.
Publication year - 1969
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.1529-8817.1969.tb02588.x
Subject(s) - pyrenoid , biology , botany , thylakoid , ultrastructure , chloroplast , biochemistry , gene
SUMMARY The pyrenoids of 18 Chlorococcum species (including 3 now transferred to Tetracystis ) have been investigated at the ultrastructural level. Three categories of pyrenoids were observed, including pyrenoids with unfragmented perforate starch plates in 11 species; those with many separate fragmented starch plates in 6 species; and those with hemispherical starch plates in 1 species. Pyrenoids were further distinguishable on the basis of the number of thylakoid disks or tubules which penetrate the ground substance. Stability and diversity of pyrenoid fine structure as a taxonomic criterion at the specific level have been demonstrated .