Bacterial communities vary across populations and tissue type in red mangroves (Rhizophora mangle, Rhizophoraceae) along an expanding front

Author:

Scherer Brendan P1ORCID,Mason Olivia U2ORCID,Mast Austin R3

Affiliation:

1. Florida State University , 319 Stadium Drive , Tallahassee, FL 32304, United States

2. Department of Earth, Ocean and Atmospheric Sciences, Florida State University , 1011 Academic Way, Tallahassee, FL 32304, United States

3. Department of Biological Sciences, Florida State University , 319 Stadium Drive, Tallahassee, FL 32304, United States

Abstract

Abstract Plant-associated microbial communities may be important sources of functional diversity and genetic variation that influence host evolution. Bacteria provide benefits for their hosts, yet in most plant systems we know little about their taxonomic composition or variation across tissues and host range. Red Mangrove (Rhizophora mangle L.) is a vital coastal plant species that is currently expanding poleward and with it, perhaps, its microbiome. We explored variability in bacterial communities across tissues, individuals, and populations. We collected samples from six sample types from 5 to 10 individuals at each of three populations and used 16S rRNA gene (iTag) sequencing to describe their bacterial communities. Core community members and dominant bacterial classes were determined for each sample type. Pairwise PERMANOVA of Bray–Curtis dissimilarity and Indicator Species Analysis revealed significant differences in bacterial communities between sample types and populations. We described the previously unexplored microbiome of the reproductive tissues of R. mangle. Populations and most sample types were associated with distinct communities. Bacterial communities associated with R. mangle are influenced by host geography and sample type. Our study provides a foundation for future work exploring the functional roles of these microbes and their relevance to biogeochemical cycling.

Publisher

Oxford University Press (OUP)

Subject

Applied Microbiology and Biotechnology,Ecology,Microbiology

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