Heterocytous cyanobacteria of the Ulu Peninsula, James Ross Island, Antarctica

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F15%3A00447933" target="_blank" >RIV/67985939:_____/15:00447933 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/15:43888740

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00300-014-1609-4" target="_blank" >http://dx.doi.org/10.1007/s00300-014-1609-4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00300-014-1609-4" target="_blank" >10.1007/s00300-014-1609-4</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Heterocytous cyanobacteria of the Ulu Peninsula, James Ross Island, Antarctica

Popis výsledku v původním jazyce

The Antarctic cyanobacterial microflora is one of the main components of the diversity of freshwater phototrophic communities in coastal areas. It is little known according to the modern taxonomic criteria (polyphasic approach). Populations of heterocytous cyanobacteria from Ulu Peninsula, the northern part of James Ross Island, NW Weddell Sea, Antarctica, were therefore reviewed. The identified morphospecies were compared with specimens from other localities in maritime Antarctica, especially from the South Shetland Islands. Ecological demands, morphological variations and, if possible, their phylogenetic positions (based on 16S rRNA gene sequencing) of registered populations were analyzed. Altogether, 11 species of heterocytous cyanoprokaryotes were recognized and studied in detail. These species were dominant in the characteristic habitats, and four novel species were described. All have a restricted endemic Antarctic distribution according to both morphology and 16S rRNA gene analyses. Three species of the genus Calothrix, one species of the genus Dichothrix (Rivulariaceae), and four species from the family Tolypotrichaceae were recognized and documented. Few species from this family belong to the recently recognized and revised genera Dactylothamnos and Hassallia, based on molecular analyses. Nodularia quadrata and two species, taxonomically classified to the genus Hydrocoryne (Nostocaceae), were studied. The complex of the genus Nostoc (especially of N. commune) exists as numerous morpho- and ecotypes, and it is diverse phylogenetically, morphologically and ecologically, and will be analyzed in special studies. Our study is important for the exact identification of cyanobacterial microflora in Antarctica, which plays a dominant role in the colonization of deglaciated areas.

Název v anglickém jazyce

Heterocytous cyanobacteria of the Ulu Peninsula, James Ross Island, Antarctica

Popis výsledku anglicky

The Antarctic cyanobacterial microflora is one of the main components of the diversity of freshwater phototrophic communities in coastal areas. It is little known according to the modern taxonomic criteria (polyphasic approach). Populations of heterocytous cyanobacteria from Ulu Peninsula, the northern part of James Ross Island, NW Weddell Sea, Antarctica, were therefore reviewed. The identified morphospecies were compared with specimens from other localities in maritime Antarctica, especially from the South Shetland Islands. Ecological demands, morphological variations and, if possible, their phylogenetic positions (based on 16S rRNA gene sequencing) of registered populations were analyzed. Altogether, 11 species of heterocytous cyanoprokaryotes were recognized and studied in detail. These species were dominant in the characteristic habitats, and four novel species were described. All have a restricted endemic Antarctic distribution according to both morphology and 16S rRNA gene analyses. Three species of the genus Calothrix, one species of the genus Dichothrix (Rivulariaceae), and four species from the family Tolypotrichaceae were recognized and documented. Few species from this family belong to the recently recognized and revised genera Dactylothamnos and Hassallia, based on molecular analyses. Nodularia quadrata and two species, taxonomically classified to the genus Hydrocoryne (Nostocaceae), were studied. The complex of the genus Nostoc (especially of N. commune) exists as numerous morpho- and ecotypes, and it is diverse phylogenetically, morphologically and ecologically, and will be analyzed in special studies. Our study is important for the exact identification of cyanobacterial microflora in Antarctica, which plays a dominant role in the colonization of deglaciated areas.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EF - Botanika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Polar Biology

ISSN

0722-4060

e-ISSN

—

Svazek periodika

38

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

18

Strana od-do

475-492

Kód UT WoS článku

000351179000004

EID výsledku v databázi Scopus

2-s2.0-84925467149