Response of soybean to soil waterlogging associated with iron excess in the reproductive stage

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dc.contributor.authorLapaz, Allan de Marcos [UNESP]
dc.contributor.authorde Camargos, Liliane Santos [UNESP]
dc.contributor.authorYoshida, Camila Hatsu Pereira
dc.contributor.authorFirmino, Ana Carolina [UNESP]
dc.contributor.authorde Figueiredo, Paulo Alexandre Monteiro [UNESP]
dc.contributor.authorAguilar, Jailson Vieira [UNESP]
dc.contributor.authorNicolai, Artur Bernardeli [UNESP]
dc.contributor.authorSilva de Paiva, Wesller da [UNESP]
dc.contributor.authorCruz, Victor Hugo [UNESP]
dc.contributor.authorTomaz, Rafael Simões [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversity of Western São Paulo (UNOESTE)
dc.date.accessioned2020-12-12T02:46:47Z
dc.date.available2020-12-12T02:46:47Z
dc.date.issued2020-08-01
dc.description.abstractSoil waterlogging is a common problem in some agricultural areas, including regions under soybean (Glycine max) cultivation. In waterlogged soils, soil O2 depletion occurs due to aerobic microorganisms and plants, affecting the metabolic and physiological processes of plants after suffering anoxia in their root tissue. Another harmful factor in this situation is the exponential increase in the availability of iron (Fe) in the soil, which may result in absorption of excess Fe. The present study sought to evaluate the response mechanisms in soybean leaves ‘Agroeste 3680’ by physiological and biochemical analyses associating them with the development of pods in non-waterlogged and waterlogged soil, combined with one moderate and two toxic levels of Fe. Gas exchange was strongly affected by soil waterlogging. Excess Fe without soil waterlogging reduced photosynthetic pigments, and potentiated this reduction when associated with soil waterlogging. Starch and ureide accumulation in the first newly expanded trifoliate leaves proved to be response mechanisms induced by soil waterlogging and excess Fe, since plants cultivated under soil non-waterlogged soil at 25 mg dm−3 Fe showed lower contents when compared to stressed plants. Thus, starch and ureide accumulation could be considered efficient biomarkers of phytotoxicity caused by soil waterlogging and excess Fe in soybean plants. The reproductive development was abruptly interrupted by the imposition of stresses, leading to a loss of pod dry biomass, which was largely due to the substantial decrease in the net photosynthetic rate, as expressed by area (A), the blockage of carbohydrate transport to sink tissues and an increase of malondialdehyde (MDA). The negative effect on reproductive development was more pronounced under waterlogged soil.en
dc.description.affiliationSão Paulo State University (UNESP)
dc.description.affiliationUniversity of Western São Paulo (UNOESTE)
dc.description.affiliationUnespSão Paulo State University (UNESP)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdCAPES: 001
dc.description.sponsorshipIdFAPESP: 2018 / 17380-4
dc.format.extent1635-1648
dc.identifierhttp://dx.doi.org/10.1007/s12298-020-00845-8
dc.identifier.citationPhysiology and Molecular Biology of Plants, v. 26, n. 8, p. 1635-1648, 2020.
dc.identifier.doi10.1007/s12298-020-00845-8
dc.identifier.issn0974-0430
dc.identifier.issn0971-5894
dc.identifier.scopus2-s2.0-85088804334
dc.identifier.urihttp://hdl.handle.net/11449/201981
dc.language.isoeng
dc.relation.ispartofPhysiology and Molecular Biology of Plants
dc.sourceScopus
dc.subjectAnoxia
dc.subjectFerrous ion
dc.subjectGlycine max
dc.subjectStarch
dc.subjectUreides
dc.titleResponse of soybean to soil waterlogging associated with iron excess in the reproductive stageen
dc.typeArtigo
unesp.author.orcid0000-0003-4798-3713[1]

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