Inoculation With Azospirillum Brasilense (ab-v4, Ab-v5) Increases Zea Mays Root Carboxylate-exudation Rates, Dependent On Soil Phosphorus Supply

dc.creatorD'Angioli
dc.creatorAndre Mouro; Gorne Viani
dc.creatorRicardo Augusto; Lambers
dc.creatorHans; Helena Frankland Sawaya
dc.creatorAlexandra Christine; Oliveira
dc.creatorRafael Silva
dc.date2017
dc.datejan
dc.date2017-11-13T11:34:02Z
dc.date2017-11-13T11:34:02Z
dc.date.accessioned2018-03-29T05:48:21Z
dc.date.available2018-03-29T05:48:21Z
dc.identifierPlant And Soil. Springer, v. 410, p. 499 - 507, 2017.
dc.identifier0032-079X
dc.identifier1573-5036
dc.identifierWOS:000392392200037
dc.identifier10.1007/s11104-016-3044-5
dc.identifierhttps://link-springer-com.ez88.periodicos.capes.gov.br/article/10.1007/s11104-016-3044-5
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/326348
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1363354
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionWe aimed to investigate the effects of root carboxylate exudation in the interaction between Azospirillum brasilense and Zea mays. We hypothesized that root carboxylate exudation is a mechanism that increases colonization of the maize rhizosphere by A. brasilense and that carboxylate exudation would increase at a low soil phosphorus (P) availability. We conducted a greenhouse experiment, using maize seeds inoculated and uninoculated with A. brasiliense. Seeds were planted in pots, supplied with nutrient solution, varying in P concentration. After 45 days we measured total plant biomass, root length and area, plant nutrient status, and the root carboxylate-exudation rate. Inoculation increased the root length and area, and this effect increased with increasing P supply. Inoculated plants also showed an increased root carboxylate-exudation rate. For inoculated treatments, the exudation rate was positively correlated with root architecture parameters; however, it was negatively correlated with leaf manganese concentration, a proxy for the amount of carboxylates in the rhizosphere. Inoculation of A. brasilense stimulated root carboxylate exudation, which was positively correlated with root length and area. These positive correlations are probably mediated by the effect of carboxylates on the rhizosphere microbial community. This indicates a positive feedback in which A. brasilense inoculation stimulates root carboxylate exudation, influencing the rhizosphere microbial community. It results in positive effects on maize root architecture. The root length of inoculated plants was positively correlated with P supply, indicating that P supply positively affects the microbial community, modulating the interaction between A. brasilense and Z. mays.
dc.description410
dc.description1-2
dc.description499
dc.description507
dc.descriptionPrograma Institucional de Bolsa de Iniciacao Cientifica (PIBIC), of the National Council of Technological and Scientific Development (CNPq)
dc.descriptionSao Paulo Research Foundation (FAPESP) [2010/17204-0]
dc.descriptionSao Paulo Research Foundation (FAPESP/Microsoft) [2011/52072-0]
dc.descriptionUniversidade Estadual de Campinas (UNICAMP)
dc.descriptionCNPq
dc.descriptionCiencias sem Fronteiras (CsF) program [CAPES: 88887.108541/2015-00]
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.languageEnglish
dc.publisherSpringer
dc.publisherDordrecht
dc.relationPlant and Soil
dc.rightsfechado
dc.sourceWOS
dc.subjectCarboxylates
dc.subjectLeaf Manganese Concentration
dc.subjectMutualism
dc.subjectPhosphorus
dc.subjectPlant Growth-promoting Rhizobacteria
dc.titleInoculation With Azospirillum Brasilense (ab-v4, Ab-v5) Increases Zea Mays Root Carboxylate-exudation Rates, Dependent On Soil Phosphorus Supply
dc.typeArtículos de revistas


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