Beneficial Plant-Associated Microorganisms From Semiarid Regions and Seasonally Dry Environments: A Review.

Autor:	Bonatelli ML; Department of Genetics, Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba, Brazil., Lacerda-Júnior GV; Brazilian Agricultural Research Corporation, Embrapa Meio Ambiente, Jaguariúna, Brazil., Dos Reis Junior FB; Brazilian Agricultural Research Corporation, Embrapa Cerrados, Planaltina, Brazil., Fernandes-Júnior PI; Brazilian Agricultural Research Corporation, Embrapa Semiárido, Petrolina, Brazil., Melo IS; Brazilian Agricultural Research Corporation, Embrapa Meio Ambiente, Jaguariúna, Brazil., Quecine MC; Department of Genetics, Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba, Brazil.
Jazyk:	angličtina
Zdroj:	Frontiers in microbiology [Front Microbiol] 2021 Jan 15; Vol. 11, pp. 553223. Date of Electronic Publication: 2021 Jan 15 (Print Publication: 2020).
DOI:	10.3389/fmicb.2020.553223
Abstrakt:	Semiarid regions are apparently low biodiversity environments; however, these environments may host a phylogenetically diverse microbial community associated with plants. Their microbial inhabitants are often recruited to withstand stressful settings and improve plant growth under harsh conditions. Thus, plant-associated microorganisms isolated from semiarid and seasonally dry environments will be detailed in the present review, focusing on plant growth promotion potential and the microbial ability to alleviate plant abiotic stress. Initially, we explored the role of microbes from dry environments around the world, and then, we focused on seasonally dry Brazilian biomes, the Caatinga and the Cerrado. Cultivable bacteria from semiarid and seasonally dry environments have demonstrated great plant growth promotion traits such as plant hormone production, mobilization of insoluble nutrients, and mechanisms related to plant abiotic stress alleviation. Several of these isolates were able to improve plant growth under stressful conditions commonly present in typical semiarid regions, such as high salinity and drought. Additionally, we highlight the potential of plants highly adapted to seasonal climates from the Caatinga and Cerrado biomes as a suitable pool of microbial inoculants to maintain plant growth under abiotic stress conditions. In general, we point out the potential for the exploitation of new microbial inoculants from plants growing in dry environments to ensure a sustainable increase in agricultural productivity in a future climate change scenario. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. (Copyright © 2021 Bonatelli, Lacerda-Júnior, dos Reis Junior, Fernandes-Júnior, Melo and Quecine.)
Databáze:	MEDLINE
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