Variation in the ureide content of Jack Bean during the reproductive stages in response to nitrate

Autor(es)

Camargos, Liliane Santos ^[1] ; Aguiar, Leandro Ferreira ^[1] ; Carmezini, Jose Antonio ^[2] ; Azevedo, Ricardo Antunes ^[2]

Afiliação do(s) autor(es)

^[1] Univ Fed Mato Grosso do Sul, Dept Ciencias Nat, BR-79600000 Tres Lagoas, MS - Brazil

^[2] Univ Sao Paulo, Escola Super Agr Luiz Queiroz, Dept Genet, BR-13418900 Piracicaba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Archives of Biology and Technology; v. 52, n. 3, p. 581-585, MAY-JUN 2009.
• Citações Web of Science: 1

Resumo

Nitrogen is frequently the limiting mineral nutrient for plant productivity and it is essential to obtain an understanding of how this element is assimilated and its metabolism regulated, in crop plants. The objective of this work was to study nitrogen metabolism in the tropical legume Canavalia ensiformis, a plant species used as a green manure. The nitrate dose provided changed the concentrations of ureides exported via the xylem, whilst the developmental stage alterations demonstrated to influence the form of ureide exported via the xylem. Considering the content of ureides as an indicator of N-fixation status, it could be concluded that N-fixation was affected in the presence of nitrate in C. ensiformis. (AU)

• Processo FAPESP: 02/02536-0 - Estudo do metabolismo de nitrogenio em canavalia ensiformes.
• Beneficiário: Ricardo Antunes de Azevedo
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 01/03462-8 - Estudo do metabolismo de nitrogênio em Crotalaria anagyroides
• Beneficiário: Liliane Santos de Camargos
• Modalidade de apoio: Bolsas no Brasil - Mestrado