Data/hora: 04/06/2024 08:21:40

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 25/11/2005
Data da última atualização: | 25/11/2005
Autoria: | ARBONA MENGUAL, V.; FOÓ SERRA, M. L.; ESCRIG MARÍN, P.; MARCO CASANOVA, A. J.; JACAS MIRET, J. A.; GÓMEZ CADENAS, A.
Afiliação: | Universitat Jaume I. Spain.
Título: | Influence of abscisic acid other plant growth regulators on citrus defence mechanisms to salt stress.
Ano de publicação: | 2003
Fonte/Imprenta: | Spanish Journal of Agricultural Research, Madri, v. 1, n. 1, p. 59-65, march. 2003.
ISSN: | 1695-971X
Idioma: | Inglês
Conteúdo: | Citrus yield and growth are deeply affected by salinity. In the present work we have studied the effectiveness of different plant growth regulators such as abscisic acid, jasmonic acid and  8´-methylene methyl abscissate in protecting citrus from salt-induced damage. Plants of Salustiana cultivar grafted onto Carrizo citrange were used for this purpose. Plants were watered with 100 mM NaCl and  leaf abscission, ethylene production, chloride accumulation and net photosynthetic rate were measured. Non-treated plants showed a dramatic drop in photosynthetic activity in response to salinity, an increase in leaf ethylene production and a high abscission rate as a result of a massive leaf chloride accumulation. Plants treated with jasmonic acid or 8´-methylene methyl abscisate did not show any physiological change in response to salt stress. However, plants treated with abscisic acid showed a high reduction in the parameters considered. These results suggest that abscisic acid plays a role in modifying citrus physiological behaviour in response to salinity and could be helpful in their acclimation to saline conditions.
Palavras-Chave: | 8´-methylene methyl abscisate; ABA; Carrizo citrange; photosynthetic rate.
Thesaurus Nal: | jasmonic acid; leaf abscission; salinity.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (22323-1) - ADP - AP - -- -  -  -  - DIS