Abstract
Stimulation of α-amylase activity was observed in Porteresia coarctata immature seeds (20-day-old) when de-embryonated prewashed half seeds were incubated in media containing gibberellic acid (GA3, 10−5M). No such activity was observed in mature seeds even when GA3 concentration was increased up to five fold. ABA suppressed the GA3 enhanced α-amylase synthesis up to nearly 70% in the immature seeds. Absence of this enzyme activity in mature seeds may be due to high levels of ABA. The immature aleurone showed a 23 kD polypeptide induced by ABA.
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Anita, C.V., Reddy, G.M. Hormonal Response and Seed Viabil ity of Parteresia coarctata, a Brackish Water Species. J. Plant Biochem. Biotechnol. 2, 127–129 (1993). https://doi.org/10.1007/BF03262940
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DOI: https://doi.org/10.1007/BF03262940