Differential responses of bell pepper genotypes to indigenous Pseudomonas putida A32 treatment: implications for drought resilience.

Autor:	Mesaroš A; Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia.; Centre for Biological Control and Plant Growth Promotion, Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia., Atanasković I; Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia.; Centre for Biological Control and Plant Growth Promotion, Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia., Nedeljković M; Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia.; Centre for Biological Control and Plant Growth Promotion, Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia., Stanković S; Centre for Biological Control and Plant Growth Promotion, Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia.; Department of Microbiology, Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia., Lozo J; Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia.; Centre for Biological Control and Plant Growth Promotion, Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia.
Jazyk:	angličtina
Zdroj:	Journal of applied microbiology [J Appl Microbiol] 2024 Aug 05; Vol. 135 (8).
DOI:	10.1093/jambio/lxae190
Abstrakt:	Aims: This study aimed to evaluate the potential of endophytic plant growth-promoting bacterium (PGPB), Pseudomonas putida A32, to mitigate drought stress in two bell pepper genotypes, Amfora 19 and Amfora 26, and to assess the genotype-specific responses to bacterial treatment. Methods and Results: The isolate P. putida A32 was selected for its remarkable beneficial properties, exhibiting 13 out of 14 traits tested. Under drought conditions, Amfora 26 showed increased relative water content and decreased H2O2 and malondialdehyde following bacterial treatment, while Amfora 19 exhibited enhanced growth parameters but responded less to bacterial treatment regarding drought parameters. However, Amfora 19 displayed inherent drought tolerance mechanisms, as indicated by lower stress parameters compared to Amfora 26. Conclusions: The study emphasizes the importance of genotype-specific responses to PGPB treatment and the mechanisms of drought tolerance in peppers. Pseudomonas putida A32 effectively mitigated drought stress in both genotypes, with differential responses influenced by plant genotype. Our study confirmed our initial hypothesis that Amfora 19, as a genotype tolerant to biotic stress, is also more tolerant to abiotic stress. Understanding these interactions is crucial for the development of customized strategies to improve plant productivity and tolerance to drought. (© The Author(s) 2024. Published by Oxford University Press on behalf of Applied Microbiology International.)
Databáze:	MEDLINE
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