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The impact of the diurnal cycle on the microbial transcriptome in the rhizosphere of barley.
Microb. Ecol. 75, 830–833 (2018)
While root exudation follows diurnal rhythms, little is known about the consequences for the microbiome of the rhizosphere. In this study, we used a metatranscriptomic approach to analyze the active microbial communities, before and after sunrise, in the rhizosphere of barley. We detected increased activities of many prokaryotic microbial taxa and functions at the pre-dawn stage, compared to post-dawn. Actinomycetales, Planctomycetales, Rhizobiales, and Burkholderiales were the most abundant and therefore the most active orders in the barley rhizosphere. The latter two, as well as Xanthomonadales, Sphingomonadales, and Caulobacterales showed a significantly higher abundance in pre-dawn samples compared to post-dawn samples. These changes in taxonomy coincide with functional changes as genes involved in both carbohydrate and amino acid metabolism were more abundant in pre-dawn samples compared to post-dawn samples. This study significantly enhances our present knowledge on how rhizospheric microbiota perceives and responds to changes in the soil during dark and light periods.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Rhizosphere ; Metatranscriptome ; Barley ; Diurnal Cycle ; Microbial Dynamics
ISSN (print) / ISBN
0095-3628
e-ISSN
1432-184X
Journal
Microbial Ecology
Quellenangaben
Volume: 75,
Issue: 4,
Pages: 830–833
Publisher
Springer
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Research Unit Comparative Microbiome Analysis (COMI)