Review of the genus Phormidesmis (Cyanobacteria) based on environmental, morphological, and molecular data with description of a new genus Leptodesmis

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F19%3A43899117" target="_blank" >RIV/60076658:12310/19:43899117 - isvavai.cz</a>

Alternative codes found

RIV/67985939:_____/19:00506169 RIV/60076658:12520/19:43899117 RIV/75081431:_____/19:00001655

Result on the web

<a href="https://www.biotaxa.org/Phytotaxa/article/view/phytotaxa.395.1.1/40913" target="_blank" >https://www.biotaxa.org/Phytotaxa/article/view/phytotaxa.395.1.1/40913</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.11646/phytotaxa.395.1.1" target="_blank" >10.11646/phytotaxa.395.1.1</a>

Result language

angličtina

Original language name

Review of the genus Phormidesmis (Cyanobacteria) based on environmental, morphological, and molecular data with description of a new genus Leptodesmis

Original language description

Very thin filamentous cyanobacteria are ubiquitous in a wide range of environments. For many years they were traditionally studied according to their morphological properties only. With the introduction of additional taxonomic methods (cytomorphological analyses, molecular sequencing, exact ecological studies, better data about phytogeographical distribution), traditional genera such as Leptolyngbya and Phormidium were found to be polyphyletic. Phormidesmis belonged to a newly formed genus that was supposed to explain the variability of such very thin simple filamentous cyanobacteria. However, even after definition of Phormidesmis based on distinct cytomorphological and phylogenetic traits, the variability within this genus remained unresolved. Here we analyzed 26 Phormidesmis strains to describe the variability within this genus, classified two new species (P. arctica and P. communis) and transferred Leptolyngbya nigrescens into P. nigrescens. A tabular review of Phormidesmis species is included. The diacritical features of all these species are: width up to 1-4 mu m, barrel-shaped cells, which can be shorter or slightly longer than wide, with apparent constrictions at the cross-walls. Our study shows that Phormidesmis is a morphologically and genetically well-defined genus with a global distribution. A newly described genus Leptodesmis has significant morphological similarities both with Phormidesmis and Leptolyngbya, however with intermediate phylogenetic position with significant divergence in 16S rRNA gene. Leptodesmis is cryptic both to Phormidesmis and Leptolyngbya. In the initial part of the life cycle resembles Leptolyngbya, the appearance of older trichomes change to Phormidesmis like morphology.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10611 - Plant sciences, botany

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

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

Name of the periodical

Phytotaxa

ISSN

1179-3155

e-ISSN

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Volume of the periodical

395

Issue of the periodical within the volume

1

Country of publishing house

NZ - NEW ZEALAND

Number of pages

16

Pages from-to

1-16

UT code for WoS article

000460472200001

EID of the result in the Scopus database

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