CO2 assimilation strategies in stratified lakes: Diversity and distribution patterns of chemolithoautotrophs

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F17%3A00480034" target="_blank" >RIV/60077344:_____/17:00480034 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1111/1462-2920.13786" target="_blank" >http://dx.doi.org/10.1111/1462-2920.13786</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/1462-2920.13786" target="_blank" >10.1111/1462-2920.13786</a>

Result language

angličtina

Original language name

CO2 assimilation strategies in stratified lakes: Diversity and distribution patterns of chemolithoautotrophs

Original language description

While mechanisms of different carbon dioxide (CO2) assimilation pathways in chemolithoautotrohic prokaryotes are well understood for many isolates under laboratory conditions, the ecological significance of diverse CO2 fixation strategies in the environment is mostly unexplored. Six stratified freshwater lakes were chosen to study the distribution and diversity of the Calvin-Benson-Bassham (CBB) cycle, the reductive tricarboxylic acid (rTCA) cycle, and the recently discovered archaeal 3-hydroxypropionate/4-hydroxybutyrate (HP/HB) pathway. Eleven primer sets were used to amplify and sequence genes coding for selected key enzymes in the three pathways. Whereas the CBB pathway with different forms of RubisCO (IA, IC and II) was ubiquitous and related to diverse bacterial taxa, encompassing a wide range of potential physiologies, the rTCA cycle in Epsilonproteobacteria and Chloribi was exclusively detected in anoxic water layers. Nitrifiying Nitrosospira and Thaumarchaeota, using the rTCA and HP/HB cycle respectively, are important residents in the aphotic and (micro-)oxic zone of deep lakes. Both taxa were of minor importance in surface waters and in smaller lakes characterized by an anoxic hypolimnion. Overall, this study provides a first insight on how different CO2 fixation strategies and chemical gradients in lakes are associated to the distribution of chemoautotrophic prokaryotes with different functional traits.

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

Environmental Microbiology

ISSN

1462-2912

e-ISSN

—

Volume of the periodical

19

Issue of the periodical within the volume

7

Country of publishing house

GB - UNITED KINGDOM

Number of pages

15

Pages from-to

2754-2768

UT code for WoS article

000405907300019

EID of the result in the Scopus database

2-s2.0-85019770631