Publication details

Cyanoprokaryotes of genus Petalonema - taxonomically and molecularly interesting taxa


UHER Bohuslav CHRÁST Lukáš

Year of publication 2010
Type Conference abstract
MU Faculty or unit

Faculty of Science

Description The present study focuses on morphological and molecular variation of natural population of genus Petalonema in comparison to clones growing under laboratory conditions and to published data. In particular, the development of the preferred main diacritical taxonomic features is interesting to observe , from the first description of Berkeley 1833 to the last of Komárek & Anagnostidis (1989). Berkeley (1833) stressed the branching, filament lined by lamella, and structure of the envelopes (Petalonema alatum), Komárek & Anagnostidis (1989) stressed the type of heterocytes, type of branching (asymmetric), wide apex of filament and structured sheath and consequently the genus Petalonema became an independent taxon in the subfamily Tolypotrichoideae of the Microchaetaceae. This relatively complicated history of the taxonomy of the the genus Petalonema motivated us to do a comparative study based on cultivation and the use of statistical methods to illustrate some suggestions on often discussed diacritical features. Financial support for this study was provided by the Funding of Ministry of Education of Czech Republic; project No. MSM0021622416.
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