Ecophysiological traits of various genotypes of a green key alga in biological soil crusts from the semi-arid Colorado Plateau, USA

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F17%3A00483318" target="_blank" >RIV/61388971:_____/17:00483318 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/17:10369108

Result on the web

<a href="http://dx.doi.org/10.1007/s10811-017-1158-7" target="_blank" >http://dx.doi.org/10.1007/s10811-017-1158-7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10811-017-1158-7" target="_blank" >10.1007/s10811-017-1158-7</a>

Result language

angličtina

Original language name

Ecophysiological traits of various genotypes of a green key alga in biological soil crusts from the semi-arid Colorado Plateau, USA

Original language description

Biological soil crusts (BSCs) represent a micro-ecosystem consisting of various microorganisms including algae in drylands worldwide. The green algal genus Klebsormidium is a typical member of such communities, and because of its filamentous morphology and sticky cells, it plays an ecological key role in the stabilization of soil surfaces. In the present study, we investigated for the first time the phylogeny and ecophysiological performance of five BSC Klebsormidium strains from the semi-arid Colorado Plateau, USA. The molecular phylogeny of rbcL sequences showed that these strains belong to two subclades, which have been described before from mainly humid habitats. During controlled dehydration, the effective quantum yield of photosystem II decreased during 370-430 min of exposure. After controlled rehydration, all strains recovered between 32.9 and 97.6% of the control, but with significant differences depending on the genetic lineage. All five isolates grew between 18.1 and 27.9 A degrees C, with isolate-specific optimal growth temperatures. Similarly, all strains were grown under increasing photon fluence rates from 4 to 110 mu mol photons m(-2) s(-1) with optima under the higher tested light levels. Two strains showed inhibition at higher photon fluence rates and hence low light requirements for growth. Photosynthesis under increasing photon fluence rates up to 314 mu mol photons m(-2) s(-1) indicated again low light requirements, but with no photoinhibition. All results underline a pronounced plasticity of the ecophysiological traits of the investigated Klebsormidium strains, which allow these terrestrial algae to exploit the environmental gradients within BSCs in arid regions.

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

10606 - Microbiology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

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

Name of the periodical

Journal of Applied Phycology

ISSN

0921-8971

e-ISSN

—

Volume of the periodical

26

Issue of the periodical within the volume

3

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

2911-2923

UT code for WoS article

000416446400020

EID of the result in the Scopus database

2-s2.0-85019238182