Influence of abscisic acid and other plant growth regulators on citrus defense mechanisms to salt stress
| Autor: | J.A. Jacas Miret, V. Arbona Mengual, M.L. Foó Serra, A. Gómez Cadenas, A.J. Marco Casanova, P. Escrig Marín |
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| Rok vydání: | 2003 |
| Předmět: |
Plant growth
CAIDA DE LAS HOJAS RESPUESTA DE LA PLANTA fungi CITRUS ESTRES OSMOTICO SALINIDAD ABA ACIDO JASMONICO JASMONIC ACID food and beverages OSMOTIC STRESS SALINITY LEAF FALL PLANT RESPONSE PLANT PHYSIOLOGY chemistry.chemical_compound Horticulture chemistry Agronomy and Crop Science Abscisic acid |
| Zdroj: | Spanish Journal of Agricultural Research; Vol. 1 No. 1 (2003); 59-65 Spanish Journal of Agricultural Research; Vol. 1 Núm. 1 (2003); 59-65 SJAR. Spanish Journal of Agricultural Research instname Spanish Journal of Agricultural Research; Vol 1, No 1 (2003); 59-65 |
| ISSN: | 2171-9292 |
| Popis: | Citrus yield and growth are deeply affected by salinity. In the present work we have studied the effectiveness of differentplant growth regulators such as abscisic acid, jasmonic acid and 8-methylene methyl abscissate in protectingcitrus 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 photosyntheticrate were measured. Non-treated plants showed a dramatic drop in photosynthetic activity in response tosalinity, 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 changein 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 responseto salinity and could be helpful in their acclimation to saline conditions El estrés salino afecta notablemente el crecimiento y la producción del cultivo de cítricos. En el presente trabajo se ha evaluado la efectividad de distintos tratamientos con fitorreguladores: ácido abscísico, ácido jasmónico y 8 -metilén abscisato de metilo, como paliativos de los efectos nocivos producidos por una concentración alta de sales. Para ello se cultivaron plantas de la variedad Salustiana, injertadas sobre el patrón citrange Carrizo, y se sometieron a tratamientos con NaCl (100 mM). Como parámetros de su comportamiento fisiológico se midieron abscisión, producción de etileno, acumulación de iones cloruro y tasa fotosintética neta en órganos foliares. Los resultados mostraron que, en plantas no tratadas con fitorreguladores, el estrés salino ocasionó una bajada drástica de la actividad fotosintética y un aumento de la producción de etileno (...) |
| Databáze: | OpenAIRE |
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