Molecular and morphological diversity of <i>Zygnema</i> and <i>Zygnemopsis</i> (Zygnematophyceae, Streptophyta) from Svalbard (High Arctic).

ABSTRACT: Filamentous conjugating green microalgae (Zygnematophyceae, Streptophyta) belong to the most common primary producers in polar hydro-terrestrial environments such as meltwater streamlets and shallow pools. The mats formed by these organisms are mostly composed of sterile filaments with Zygnema morphology, but the extent of their diversity remains unknown. Traditional taxonomy of this group is based on reproductive morphology, but sexual reproduction (conjugation and formation of resistant zygospores) is very rare in extreme conditions. In the present study we gave the first record of zygospore formation in Svalbard field samples, and identified conjugating filaments as Zygnemopsis lamellata and Zygnema cf. calosporum. We applied molecular phylogeny to study gene

SUBMITTER: Pichrtova M 

PROVIDER: S-EPMC6235541 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature