Impact of Inoculation with Pseudomonas aestus CMAA 1215 T on the Non-target Resident Bacterial Community in a Saline Rhi

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Impact of Inoculation with Pseudomonas aestus CMAA ­1215T on the Non‑target Resident Bacterial Community in a Saline Rhizosphere Soil Rafael L. F. Vasconcellos1   · Emiliana Manesco Romagnoli2 · Rodrigo G. Taketani2 · Suikinai Nobre Santos2 · Tiago Domingues Zucchi3 · Itamar Soares Melo2 Received: 7 July 2020 / Accepted: 5 November 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020

Abstract Plant growth reduction caused by osmotic stress, pathogens, and nutrient scarcity can be overcome by inoculation with plant growth-promoting rhizobacteria (PGPR). Knowing the effects of PGPR on the microbial community beyond those on plant growth can bring new options of soil microbiota management. The present study aimed to investigate the effect of inoculation with the newly described Pseudomonas aestus CMAA ­1215T [a 1-aminocyclopropane-1-carboxylate (ACC) deaminase and glycine-betaine producer] on the rhizosphere bacterial community of Zea mays in natural (non-salinized) and saline soil. The bacterial community structure was assessed by sequencing the V6–V7 16S ribosomal RNA using the Ion Personal Genome ­Machine™. The non-metric multidimensional scaling (NMDS) of the OTU profile (ANOSIM P