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Atacama desert actinomycetes: taxonomic analysis, drought tolerance and plant growth promoting potential

Lookup NU author(s): Emeritus Professor Michael Goodfellow

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Abstract

© The Author(s), under exclusive licence to Springer Nature B.V. 2024. This study was designed to recover representative culturable actinomycetes from the Atacama Desert, and to detect their ability to promote plant growth under drought conditions. Environmental samples were taken from three Atacama Desert habitats, namely, from the Aguas Calientes, Lomas Bayas and Yungay core regions. With one exception higher actinomycete counts were obtained when isolation media were inoculated with mineral particles than with corresponding aliquots of serial dilution. Comparative 16S rRNA gene sequencing showed that representative isolates belonged to thirteen genera including putative novel Blastococcus, Kocuria, Micromonospora, Pseudonocardia, Rhodococcus and Streptomyces species. Representative isolates produced indole-3-acetic acid, siderophore and solubilized phosphate as well as displaying an ability to grow under drought conditions. In conclusion, the current findings open up exciting prospects for the promising potential of actinomycetes from the Atacama Desert to be used as bioinoculants to promote plant growth in arid and semi-arid biomes. Graphical abstract: (Figure presented.).

Publication metadata

Author(s): Xie F, Andrews B, Asenjo JA, Goodfellow M, Pathom-aree W

Publication type: Article

Publication status: Published

Journal: World Journal of Microbiology and Biotechnology

Year: 2024

Volume: 40

Issue: 9

Online publication date: 27/07/2024

Acceptance date: 10/07/2024

ISSN (print): 0959-3993

ISSN (electronic): 1573-0972

Publisher: Springer Nature

URL: https://doi.org/10.1007/s11274-024-04077-w

DOI: 10.1007/s11274-024-04077-w

PubMed id: 39060806

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