Data/hora: 13/06/2024 04:07:35

Provedor de dados: | Brazilian Journal of Plant Physiology
País: | Brazil
Título: | Differential responses of ribulose-1,5-bisphosphate carboxylase/oxygenase activities of two Vigna unguiculata cultivars to salt stress
Autores: | Aragão,Maria Erivalda Farias de; Guedes,Marjorie Moreira; Otoch,Maria de Lourdes Oliveira; Guedes,Maria Izabel Florindo; Melo,Dirce Fernandes de; Lima,Maria da Guia Silva.
Data: | 2005-06-01
Ano: | 2005
Palavras-chave: | Rubisco; Photosynthesis; Salt stress; Vigna unguiculata.
Resumo: | Vita 3 and Vita 5 are two Vigna unguiculata cultivars that differ in their capacities for survival in saline environments; Vita 3 is more tolerant and Vita 5 more sensitive. Both cultivars were submitted to salt stress with 0.1 M NaCl. After 8 days, root and shoot growth from both cultivars was reduced but reduction was more pronounced in Vita 5. Furthermore, leaf area was also reduced in this cultivar. Chlorophyll content and chlorophyll fluorescence parameters were not affected by salt stress, but the specific activities of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) decreased in Vita 3 and increased in Vita 5. The use of immunological techniques also revealed that the Rubisco content from Vita 3 decreased while that of Vita 5 increased. The discussion of these results is aimed at reaching a better understanding of the differences between these cultivars in relation to salt stress.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000200003
Editor: | Brazilian Journal of Plant Physiology
Relação: | 10.1590/S1677-04202005000200003
Formato: | text/html
Fonte: | Brazilian Journal of Plant Physiology  v.17 n.2 2005
Fonte: | info:eu-repo/semantics/openAccess