Distribution of Root-Associated Bacterial Communities Along a Salt-Marsh Primary Succession

Frontiers in Plant Science
Miao WangJoana Falcão Salles

Abstract

Proper quantification of the relative influence of soil and plant host on the root-associated microbiome can only be achieved by studying its distribution along an environmental gradient. Here, we used an undisturbed salt marsh chronosequence to study the bacterial communities associated with the soil, rhizosphere and the root endopshere of Limonium vulgare using 454-pyrosequencing. We hypothesize that the selective force exerted by plants rather than soil would regulate the dynamics of the root-associated bacterial assembly along the chronosequence. Our results showed that the soil and rhizosphere bacterial communities were phylogenetically more diverse than those in the endosphere. Moreover, the diversity of the rhizosphere microbiome followed the increased complexity of the abiotic and biotic factors during succession while remaining constant in the other microbiomes. Multivariate analyses showed that the rhizosphere and soil-associated communities clustered by successional stages, whereas the endosphere communities were dispersed. Interestingly, the endosphere microbiome showed higher turnover, while the bulk and rhizosphere soil microbiomes became more similar at the end of the succession. Overall, we showed that soil char...Continue Reading

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Citations

Feb 6, 2018·Applied Microbiology and Biotechnology·Larisa Cortes-TolalpaJoana Falcao Salles
Nov 23, 2017·Frontiers in Microbiology·Miao WangJoana F Salles
Oct 25, 2020·Microorganisms·Edisa García HernándezJoana Falcão Salles

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Methods Mentioned

BETA
PCR
454-sequencing

Software Mentioned

CAP
PerMANOVA
vegan
Origin Pro
R
PyNAST
RVAideMemoire
Quantitative Insights into Microbial Ecology ( QIIME )
UCLUST
QIIME

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