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Beneficial microbial species and metabolites alleviate soybean oxidative damage and increase grain yield during short dry spells

dc.contributor.authorMoretti, Luiz Gustavo [UNESP]
dc.contributor.authorCrusciol, Carlos Alexandre Costa [UNESP]
dc.contributor.authorBossolani, João William [UNESP]
dc.contributor.authorCalonego, Juliano Carlos [UNESP]
dc.contributor.authorMoreira, Adônis
dc.contributor.authorGarcia, Ariani [UNESP]
dc.contributor.authorMomesso, Letusa [UNESP]
dc.contributor.authorKuramae, Eiko Eurya
dc.contributor.authorHungria, Mariangela
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionNIOO-KNAW
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.contributor.institutionEcology and Biodiversity
dc.date.accessioned2021-06-25T10:58:12Z
dc.date.available2021-06-25T10:58:12Z
dc.date.issued2021-07-01
dc.description.abstractShort dry spells are an important grain yield constraint in tropical regions. Plant growth-promoting bacteria (PGPB) and their metabolites can mitigate the impact of drought stress by promoting changes in plant metabolism, physiology, and biochemistry. However, the effects of PGPB on soybean [Glycine max (L.) Merril] under drought stress in tropical regions have not been established. The experiments were carried out under tropical field conditions with short dry spells. Therefore, in this study we used a three-factorial trial to evaluate the effects of bacterial consortium consisting of N2-fixing Bradyrhizobium japonicum (strain SEMIA 5079) and Bradyrhizobium diazoefficiens (strain SEMIA 5080), the biocontrol agent Bacillus subtilis (strain QST 713), and the plant growth-promoting Azospirillum brasilense (strains Ab-V5 and Ab-V6) with or without application of microbial secondary metabolites (MSM, rhizobial metabolites enriched in lipo-chitooligosaccharides (LCOs)) during two growing seasons. Photosynthetic pigments, gas exchange parameters, antioxidant enzyme activity and proline concentrations in leaves, nodulation, plant growth development and grain yield were evaluated. The bacterial consortium comprising Bradyrhizobium spp., A. brasilense strains and MSM application increased the contents of chlorophyll a (14.5 %), chlorophyll b (30.8 %), total chlorophyll (17.2 %), and total carotenoids (27.3 %) compared with Bradyrhizobium spp. treatment alone. This consortium also increased the net photosynthetic rate (17.7 %), stomatal conductance (56.5 %), internal CO2 concentration in the substomatal chamber (8.3 %), and transpiration (44 %) compared with plants that received the standard inoculation (Bradyrhizobium spp. only), while reducing the leaf contents of hydrogen peroxide (−18.8 %) and proline (−29.4 %), lipid peroxidation (−15.9 %), and the activities of superoxide dismutase (−18.2 %), catalase (−21.2 %), and ascorbate peroxidase (−19.1 %). Taken together, the results indicate that a beneficial bacterial consortium comprising Bradyrhizobium spp. and A. brasilense strains combined with MSM application can alleviate oxidative damage during dry spells. Furthermore, this consortium improved soybean nodulation, plant growth development, and grain yield by up to 12.2 %.en
dc.description.affiliationCollege of Agricultural Sciences São Paulo State University (UNESP) Department of Crop Science, Botucatu
dc.description.affiliationNetherlands Institute of Ecology NIOO-KNAW Department of Microbial Ecology
dc.description.affiliationEmbrapa Soybean Carlos João Strass Highway, Post Office Box 231
dc.description.affiliationUtrecht University Institute of Environmental Biology Ecology and Biodiversity, Padualaan 8
dc.description.affiliationUnespCollege of Agricultural Sciences São Paulo State University (UNESP) Department of Crop Science, Botucatu
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: #2016/23699-8
dc.description.sponsorshipIdFAPESP: #2018/14892-4
dc.identifierhttp://dx.doi.org/10.1016/j.eja.2021.126293
dc.identifier.citationEuropean Journal of Agronomy, v. 127.
dc.identifier.doi10.1016/j.eja.2021.126293
dc.identifier.issn1161-0301
dc.identifier.scopus2-s2.0-85104374948
dc.identifier.urihttp://hdl.handle.net/11449/207616
dc.language.isoeng
dc.relation.ispartofEuropean Journal of Agronomy
dc.sourceScopus
dc.subjectAntioxidant metabolism
dc.subjectGlycine max
dc.subjectPhotosynthesis
dc.subjectPlant growth-promoting bacteria
dc.subjectWater deficit
dc.titleBeneficial microbial species and metabolites alleviate soybean oxidative damage and increase grain yield during short dry spellsen
dc.typeArtigo
dspace.entity.typePublication
unesp.author.orcid0000-0001-7693-7826 0000-0001-7693-7826[1]
unesp.author.orcid0000-0003-4673-1071[2]
unesp.author.orcid0000-0002-4389-8338 0000-0002-4389-8338[3]
unesp.author.orcid0000-0002-8950-3231[4]
unesp.author.orcid0000-0003-4023-5990[5]
unesp.author.orcid0000-0002-9715-4334[6]
unesp.author.orcid0000-0003-4712-0301 0000-0003-4712-0301 0000-0003-4712-0301[7]
unesp.author.orcid0000-0001-6701-8668 0000-0001-6701-8668[8]
unesp.author.orcid0000-0002-5132-8685[9]
unesp.departmentProdução e Melhoramento Vegetal - FCApt

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