Phenotype diversity and phylogeny of selected Scytonema-species (Cyanoprokaryota) from SE Brazil

0422556 - BÚ 2014 RIV CZ eng J - Journal Article
Komárek, Jiří - Sant Anna, C. L. - Bohunická, Markéta - Mareš, Jan - Hentschke, G. S. - Rigonato, J. - Fiore, M.F.
Phenotype diversity and phylogeny of selected Scytonema-species (Cyanoprokaryota) from SE Brazil.
Fottea. Roč. 13, č. 2 (2013), 173-200. ISSN 1802-5439. E-ISSN 1805-4927
R&D Projects: GA ČR GAP506/12/1818
Institutional support: RVO:67985939
Keywords : Scytonema * taxonomy * polyphasic approach
Subject RIV: EF - Botanics
Impact factor: 1.627, year: 2013

Members of the genus Scytonema belong to prominent components of microflora of tropical and subtropical soils, but their diversity and taxonomic classification is little known. We present phenotype characteristics of fourteen morphotypes of the genus Scytonema from the SE Brazil (ecosystem of “Mata Atlântica”). The populations of studied Scytonema species are ecologically significant, as they hold the dominant position in the microvegetation communities of lateritic and forest soils and of stony substrates. Species commonly distributed throughout the tropical regions, as well as the types with restricted geographic distribution in S America are included in the study. Two new species from a little known subgenus Myochrotes, in which the cultivation is difficult, are described. Our analyses support the principle of congruency of morphological characters with phylogenetic position of the studied species.
Permanent Link: http://hdl.handle.net/11104/0228744