Root-Associated Bacteria Community Characteristics of Antarctic Plants: Deschampsia antarctica and Colobanthus quitensis—a Comparison

• DOI: 10.1007/s00248-021-01891-9
• Publication Date: 2021-10-18T19:16:58Z
• Authors: Anna Znój; Jan Gawor; Robert Gromadka; Katarzyna J. Chwe...; Jakub Grzesiak
• Keywords: Edaphic; Endophyte

Colobanthus quitensis (Kunth) Bartl. and Deschampsia antarctica Desv. are the only Magnoliophyta to naturally colonize Antarctic region. The reason for their sole presence in Antarctica is still debated as there no definitive consensus on how two unrelated flowering plants managed establish breeding populations this part of world. In study, we have explored compared rhizosphere root-endosphere dwelling microbial community C. D. specimens sampled maritime from sites displaying contrasting edaphic characteristics. Bacterial phylogenetic diversity (high-throughput 16S rRNA gene fragment targeted sequencing) metabolic activity (Biolog EcoPlates) with a geochemical soil background were assessed. Gathered data showed that microbiome root system was mostly site-dependent, different characteristics each examined locations. This plant tolerated an active bacterial severe conditions (salt stress nutrient deprivation), while other more favorable circumstances, it restricted activity, possibility microbivory-based acquisition. communities high degree similarity between samples within particular rhizocompartment. grass' endosphere significantly enriched beneficial taxa family Rhizobiaceae, which displayed obligatory endophyte characteristics, suggesting at least transmitted vertically. Ultimately, ecological success might be largely attributed associations management root-associated microbiota.