Harnessing plant growth-promoting bacteria (Herbaspirillum seropedicae) from an optimal mineral nitrogen supply: A study on improving nitrogen use efficiency in marandu palisadegrass

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Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorNorth Fluminense State University Darcy Ribeiro-
Autor(es): dc.contributorFederal University of Espírito Santo-
Autor(es): dc.creatorThiengo, Cássio Carlette-
Autor(es): dc.creatorGalindo, Fernando Shintate-
Autor(es): dc.creatorRodak, Bruna Wurr-
Autor(es): dc.creatorBernardes, João Victor Silva-
Autor(es): dc.creatorda Rocha, Letícia Oliveira-
Autor(es): dc.creatorGaziola, Salete Aparecida-
Autor(es): dc.creatorAzevedo, Ricardo Antunes-
Autor(es): dc.creatorBurak, Diego Lang-
Autor(es): dc.creatorOlivares, Fábio Lopes-
Autor(es): dc.creatorLavres, José-
Data de aceite: dc.date.accessioned2025-08-21T20:43:34Z-
Data de disponibilização: dc.date.available2025-08-21T20:43:34Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2025-03-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.plaphy.2025.109497-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/299139-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/299139-
Descrição: dc.descriptionIncreasing nitrogen use efficiency (NUE) remains a crucial topic in contemporary agriculture. Inoculation with endophytic diazotrophic bacteria offers a potential solution, but the results vary with the N-fertilization regime. Here, we examined the efficacy of inoculation with Herbaspirillum seropedicae strain HRC54 in enhancing NUE and promoting the growth of Marandu palisadegrass with varying levels of N-urea (0, 25, 50, and 100 mg N kg soil⁻1). We evaluated NUE indicators and conducted complementary analyses covering biochemical, physiological, nutritional and growth-related parameters after cultivating the plants within a greenhouse environment and maintaining controlled conditions of temperature and humidity. Growth promotion was evident in inoculated plants receiving up to 50 mg N kg soil−1, with enhanced root growth orchestrating the improvement in NUE. Inoculation also improved the nutritional status of the plants (increased N and P accumulation and N balance index) and increased photosynthesis-related parameters, resulting in increased biomass yield. Insufficient N supply led to oxidative stress (overproduction of H₂O₂ and MDA), which was associated with a reduction in photosystem II efficiency, chlorophyll concentration, and soluble proteins, but only in plants that did not receive microbial inoculation. Conversely, a high N supply (100 mg N kg soil−1) combined with H. seropedicae had no synergistic effect, as NUE and the associated benefits did not improve. Therefore, inoculation with H. seropedicae is effective at increasing NUE when combined with moderate N rates. These findings support a more rational use of N fertilizers to optimize inoculation benefits and enhance NUE in tropical forage crops.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionNaval University of Engineering-
Descrição: dc.descriptionLuiz de Queiroz College of Agriculture University of São Paulo-
Descrição: dc.descriptionFaculty of Agricultural and Technological Sciences São Paulo State University-
Descrição: dc.descriptionCenter for Nuclear Energy in Agriculture University of São Paulo-
Descrição: dc.descriptionLaboratory of Cellular and Tissue Biology North Fluminense State University Darcy Ribeiro, Campos dos Goytacazes-
Descrição: dc.descriptionCenter for Agricultural Sciences and Engineering Federal University of Espírito Santo-
Descrição: dc.descriptionFaculty of Agricultural and Technological Sciences São Paulo State University-
Idioma: dc.languageen-
Relação: dc.relationPlant Physiology and Biochemistry-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectEndophytic diazotrophic bacteria-
Palavras-chave: dc.subjectN recovery-
Palavras-chave: dc.subjectOxidative stress-
Palavras-chave: dc.subjectPhotosynthetic efficiency-
Palavras-chave: dc.subjectRoot growth promotion-
Título: dc.titleHarnessing plant growth-promoting bacteria (Herbaspirillum seropedicae) from an optimal mineral nitrogen supply: A study on improving nitrogen use efficiency in marandu palisadegrass-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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