Rhizosphere microbiome functional shifts drive drought tolerance in common bean genotypes.

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dc.contributorLUCAS WILLIAM MENDES, ESALQ/USP
dc.contributorTHIERRY ALEXANDRE PELLEGRINET, USP
dc.contributorANA VITÓRIA REINA DA SILVA, PUCCAMP
dc.contributorIZADORA DE CÁSSIA MESQUITA DA CUNHA, CENTER FOR NUCLEAR ENERGY IN AGRICULTURE/USP
dc.contributorCAROLINE SAYURI NISHISAKA, EMBRAPA MEIO AMBIENTE
dc.contributorEDUARDO HENRIQUE MARCANDALLI BOLETA, CENTER FOR NUCLEAR ENERGY IN AGRICULTURE/USP
dc.contributorLARA DE ALMEIDA LOSOVOI
dc.contributorMAYCON CRISTIANO BARBOSA
dc.contributorRODRIGO MENDES, CNPMA
dc.contributorS. M. TSAI, ESALQ/USP.
dc.creatorMENDES, L. W.
dc.creatorPELLEGRINETTI, T. A.
dc.creatorSILVA, A. V. R. da
dc.creatorCUNHA, I. C. M.
dc.creatorNISHISAKA, C. S.
dc.creatorBOLETA, E. H. M.
dc.creatorLOSOVOI, L. de A.
dc.creatorBARBOSA, M. C.
dc.creatorMENDES, R.
dc.creatorTSAI, S. M.
dc.date2026-02-27T20:11:39Z
dc.date2026-02-27T20:11:39Z
dc.date2026-02-27
dc.date2025
dc.date.accessioned2026-07-07T05:11:07Z
dc.descriptionClimate change-driven increases in temperature and reductions in water availability present critical threats to global food security. Harnessing the potential of the rhizosphere microbiome represents a promising strategy to enhance crop resilience under drought stress. In this study, we investigated the responses of four common bean (Phaseolus vulgaris L.) cultivars—two drought-tolerant (BAT477, SEA5) and two drought-susceptible (IAC Milênio, IAC-Carioca 80SH)—to 96 hours of drought stress in mesocosm experiments. We assessed plant physiological responses, nutrient dynamics, and the taxonomic and functional profiles of the rhizosphere microbiome using metagenomic approaches. Drought-tolerant cultivars maintained higher photosynthetic rates, stomatal conductance, and water use efficiency compared to susceptible ones. These physiological advantages were accompanied by selective recruitment of beneficial microbial taxa, particularly Actinomycetia, enriched in genes linked to osmoprotection (e.g., trehalose, glycine betaine, proline), oxidative stress mitigation, nutrient cycling, and biofilm formation. In contrast, susceptible cultivars displayed a reactive microbial response dominated by DNA repair and antioxidant defense genes. Overall, drought triggered a differential abundance of 1,864 microbial genes, revealing significant functional shifts in the rhizosphere. Upon rehydration, drought-tolerant cultivars exhibited partial recovery of photosynthesis (48–57%), suggesting microbiome-conferred resilience. These findings highlight the genotype-specific modulation of rhizosphere microbiota and underscore the role of microbial functions in supporting plant performance under stress. This study provides mechanistic insights into microbiome-driven drought tolerance and supports the development of microbiome-based strategies for sustainable agriculture in increasingly arid environments.
dc.format2 p.
dc.identifierIn: ISME LATIN AMERICAN CONGRESS ON MICROBIAL ECOLOGY, 4., 2025, Mérida. [Abstracts]... Wageningen: The International Society for Microbial Ecology (ISME), 2025.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1184783
dc.identifier.urihttp://hdl.handle.net/123456789/483280
dc.languagepor
dc.rightsopenAccess
dc.subjectRizosfera
dc.subjectMicrobiome
dc.subjectBeans
dc.subjectDrought tolerance
dc.titleRhizosphere microbiome functional shifts drive drought tolerance in common bean genotypes.
dc.typeResumo em anais e proceedings

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