The Effect of CCC and Amo-1618 on Growth, Catalase, Peroxidase and Indoleacetic Acid Oxidase Activity of Young Barley Seedlings |
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| Authors: | Thomas Caspar Josiane Lacoppe |
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| Institution: | Laboratoire de Biologie générale, Institut Van Bencden, Universitéde Liége and Centre IRSIA de Kecherches des Hormones vegetales, Liège (Belgium) |
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| Abstract: | Barley seedlings were grown in darkness on filter paper saturated with phosphate buffer or CCC and Amo-1618 buffered solutions. The effects of CCC and Amo-1618 on growth, catalase, peroxidase and lAA-oxidase were studied on coleoptile and primary leaves. Both growth-retarding chemicals cause an inhibition of growth, Amo-1618 being more effective than CCC. They have no effect on catalase activity. Increasing concentrations of CCC and Amo-1618 progressively stimulate peroxidase and IAA-oxidase activities (Amo-1618 more than CCC). The enzymatic activity in short-treated plants is higher than in the corresponding control plants of the same height. It is proposed that CCC and Amo-1618 exert their effect on the growth of barley by acting on auxin catabolism. |
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