The effect of jasmonic acid on the accumulation of ABA, proline and spermidine and its influence on membrane injury under water deficit in two barley genotypes
2003
Bandurska, H. | Stroinski, A. | Kubis, J. (Poznan Agricultural University (Poland). Dept. of Plant Physiology)
Seedlings of two barley genotypes (Maresi and wilf form of Hordeum spontaneum) were treated with jasmonic acid for 24 h and then subjected to water stress. JA caused an increase in the content of ABA but not in that of proline and spermidine in the two studied genotypes. The effect of treatment did not depend on the applied JA concentration. The pre-stress treatment with JA changed plant response to water deficit with regard to membrane injury. Treatment with lower JA concentration caused a substantial reduction of the stress-induced membrane damage in the both genotypes. A higher JA concentration caused a reduction of membrane injury only in H. spontaneum and was ineffective in Maresi. JA had no influence on the leaf water status in water-stressed plants. A possible role of JA in leaf ABA accumulation and alleviation of cell membrane injury under water deficit is discussed
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