Nitrate reductase activity (Nra) and levels of nitrogenous compounds in leaves of crabwood (Carapa guianensis Aubl.) under three water regimes and suspension of the stresses

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dc.contributor.authorLima, Ellen Gleyce da Silva
dc.contributor.authorMaltarolo, Bruno Moitinho
dc.contributor.authorNogueira, Glauco André dos Santos
dc.contributor.authorTeixeira, Dielle Thainá de França
dc.contributor.authorCardoso, Kerolém Prícila Sousa
dc.contributor.authorDantas, Guilherme Gomes
dc.contributor.authorde Oliveira, Tamires Borges
dc.contributor.authorde Souza, Luma Castro [UNESP]
dc.contributor.authorda Costa, Roberto Cezar Lobo
dc.contributor.authorde Oliveira Neto, Cândido Ferreira
dc.contributor.institutionUFRA- Universidade Federal Rural da Amazônia
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-28T19:02:27Z
dc.date.available2022-04-28T19:02:27Z
dc.date.issued2015-01-01
dc.description.abstractThe crabwood has high phenotypic plasticity due to its adaptability to different environments. The aim of this work was to evaluate the content of nitrate, free ammonium, nitrate reductase activity (Nra), and the levels of total soluble amino acids, proline, glycine betaine in young plants of crabwood (Carapa guianensis Aubl.) under to three water regimes and subsequent recovery process through the stresses suspension. The experiment was carried out on a greenhouse from Universidade Federal Rural da Amazônia, Capitão Poço city, PA State. A completely randomized design on factorial scheme 3×5 was used (three water conditions: irrigated control, water deficit and flooding; and five evaluation times: 0 day, 10 days, 20 days, 30 days and suspension of water stress after 72 hours from the 30th day) with five repetitions, totalizing 75 experimental units. The results showed that the water potential, nitrate concentration and the Nra decreased significantly in plants under water stress, as well as in plants under flooding, with average of -3.46 MPa, 0.6 NO3-/kg DM, 0.1294 μmoles of NO2-/g FM/h (water potential, nitrate and Nra, respectively). The ammonium (NH4+) levels increased in the plant under water stress. The increasing level was more significant in the plants under water deficit, averaging 4.0 of mmol of NH4+/kg of DM. The amino acids levels, proline and glycine betaine had a significant increase in plants with water stress, especially in the plants under water deficit. The plants subjected to flooding did not show any significant result. After the suspension of the water stress, only the contents of free ammonium and levels and total soluble amino acids recovered to their initial values. To others variables, the stress suspension period was not enough for plant's total recovering. The young plants of crabwood subjected to water stress promoted changes in nitrogen metabolic pathways. These changes showed a bigger tolerance of the plants of crabwood to flooding.en
dc.description.affiliationEngenheira Florestal estudante de Doutorado em Ciências Florestais UFRA- Universidade Federal Rural da Amazônia
dc.description.affiliationEngenheiro Florestal estudante de Mestrado em Ciências Florestais UFRA- Universidade Federal Rural da Amazônia
dc.description.affiliationEngenheiro Agrônomo estudante de Doutorado em Ciências Florestais UFRA- Universidade Federal Rural da Amazônia
dc.description.affiliationEstudante de Agronomia UFRA- Universidade Federal Rural da Amazônia
dc.description.affiliationEngenheira Agrônoma estudante de Mestrado em Ciências Florestais UFRA- Universidade Federal Rural da Amazônia
dc.description.affiliationEngenheira Agrônoma estudante de Doutorado em Agronomia (Ciência do Solo) Universidade Estadual Paulista Júlio de Mesquita Filho
dc.description.affiliationBiólogo Professor Doutor do Instituto de Ciências Agrárias UFRA- Universidade Federal Rural da Amazônia
dc.description.affiliationEngenheiro Agrônomo Professor Doutor do Instituto de Ciências Agrárias UFRA- Universidade Federal Rural da Amazônia
dc.description.affiliationUnespEngenheira Agrônoma estudante de Doutorado em Agronomia (Ciência do Solo) Universidade Estadual Paulista Júlio de Mesquita Filho
dc.format.extent1035-1041
dc.identifier.citationAustralian Journal of Crop Science, v. 9, n. 11, p. 1035-1041, 2015.
dc.identifier.issn1835-2707
dc.identifier.issn1835-2693
dc.identifier.scopus2-s2.0-84951976056
dc.identifier.urihttp://hdl.handle.net/11449/220528
dc.language.isoeng
dc.relation.ispartofAustralian Journal of Crop Science
dc.sourceScopus
dc.subjectFlooding
dc.subjectFree ammonium level
dc.subjectNitrogen metabolism
dc.subjectRehydration
dc.subjectWater Suspension
dc.titleNitrate reductase activity (Nra) and levels of nitrogenous compounds in leaves of crabwood (Carapa guianensis Aubl.) under three water regimes and suspension of the stressesen
dc.typeArtigo

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