期刊
JOURNAL OF PHYCOLOGY
卷 50, 期 6, 页码 1089-1100出版社
WILEY-BLACKWELL
DOI: 10.1111/jpy.12241
关键词
16S rRNA gene; Cyanobacteria; Godleyaceae; Microchaetaceae; Tolypothrichaceae; Tolypothrix; Fortiea; new species
资金
- Grant agency of the CR [P506/12/1818]
- Ministry of Education [MSMT/AMVIS LH12100]
- ESF [CZ.1.07/2.3.00/30.0006]
- ECOP program [CZ.1.07/2.3.00/30.0006]
- Academy of Sciences of the CR long-term research development project [RVO67985939]
- National Science Foundation [DEB-0842702]
- programme Projects of Large Infrastructure for Research, Development, and Innovations [LM2010005]
The family Microchaetaceae is a large group of heterocytous cyanobacteria, whose members bear typical morphological features of uniseriate heteropolar filaments never terminated by thin hairs and with simple false branching. However, phylogenetic analyses of the gene for 16S rRNA showed that members of this traditionally morphologically delimited family form several distant groups and therefore the current concept is hereafter indefensible. In this study, we provide reassessment of the status of the family Microchaetaceae based on morphology, ecology, biogeography, and phylogeny of 16S rRNA gene. Thorough examination of strains of the nominate genus Microchaete revealed their affiliation to two groups, Nostocaceae and Rivulariaceae, and their distant position to other traditional members of Microchaetaceae such as Tolypothrix, Hassallia, and Coleodesmium. To reflect the phylogenetic relationships and to accommodate members of the traditional family Microchaetaceae that are clearly not related to any of the Microchaete representatives, we propose establishment of two new families, Tolypothrichaceae and Godleyaceae. Based on both molecular and morphological evidence, we also provide a description of three new species of the genus Fortiea.
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