Macrochaete gen. nov (Nostocales, Cyanobacteria), a taxon morphologically and molecularly distinct from Calothrix
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F16%3A43890810" target="_blank" >RIV/60076658:12310/16:43890810 - isvavai.cz</a>
Alternative codes found
RIV/67985939:_____/16:00468427
Result on the web
<a href="http://onlinelibrary.wiley.com/doi/10.1111/jpy.12425/abstract;jsessionid=918583F9F41AA33C8C24DFCE07AA81F0.f02t02" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1111/jpy.12425/abstract;jsessionid=918583F9F41AA33C8C24DFCE07AA81F0.f02t02</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/jpy.12425" target="_blank" >10.1111/jpy.12425</a>
Alternative languages
Result language
angličtina
Original language name
Macrochaete gen. nov (Nostocales, Cyanobacteria), a taxon morphologically and molecularly distinct from Calothrix
Original language description
Historically, the genus Calothrix included all noncolonial, tapered, heterocytous filaments within the cyanobacteria. However, recent molecular phylogenies show that Calothrix defined in this sense represents five distinct clades. The type species of Calothrix is marine, with solitary basal heterocytes, no akinetes, and distal ends tapering abruptly into short hairs. We examined the morphology and phylogeny of 45 tapering cyanobacteria in the Rivulariaceae, including freshwater and marine representatives of both Calothrix (35 strains) and its sister taxon Rivularia (10 strains). The marine Calothrix fall into two lineages, but we lack the generitype and so cannot identify the clade corresponding to the type species. The freshwater and soil Calothrix fall into the C.parietina clade and are characterized by having a basal heterocyte, no akinetes, and gradual taperingbut not into a long hyaline hair. Macrochaete gen. nov. is a freshwater taxon sister to the Calothrix lineages but clearly separated from Rivularia. The species in this genus differ morphologically from Calothrix by their ability to produce two heteromorphic basal heterocytes and specific secondary structures of the 16S-23S ITS. An additional feature present in most species is the presence of a distal, long hyaline hair, but this character has incomplete penetrance due to its expression only under specific environmental conditions (low phosphate), and in one species appears to be lost. We recognize three species: M.psychrophila (type species) from cold environments (high mountains, Antarctica), M.santannae from wet walls of subtropical South America, and M.lichenoides, a phycobiont of lichens from Europe.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
EF - Botany
OECD FORD branch
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Result continuities
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)
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Phycology
ISSN
0022-3646
e-ISSN
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Volume of the periodical
52
Issue of the periodical within the volume
4
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
18
Pages from-to
638-655
UT code for WoS article
000383589700013
EID of the result in the Scopus database
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