Treatment of bean cuttings by chestnut extracts during rooting modifies their IAA-oxidase activity |
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| Authors: | M. C. Mato,A. Vá zquez,M. D. V. Gesto |
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| Affiliation: | M. C. Mato, A. Vázquez and M. D. V. Gesto, Plant Physiology, Instituto Investigaciones Agrobiológicas de Galicia, C. S. I. C., Apartado 122, Santiago de Compostela, Spain. |
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| Abstract: | The IAA-oxidase activity in bean cuttings ( Phaseolus vulgaris L. cv. Contender) treated with extracts from juvenile and adult chestnut ( Castanea sativa Mill.) was studied in the light of the effect of the extracts on the rooting activity of some auxins. Extracts from adult chestnut increased IAA-oxidase activity in bean cuttings. Extracts from juvenile chestnut inhibited IAA-oxidase activity only slightly, but substantially reduced the IAA-oxidase activity of bean cuttings pre-treated with adult chestnut extracts. These findings provide evidence that there is a relationship between the IAA-oxidase system and the effect of chestnut extracts on IAA-induced rhizogenesis in bean cuttings. |
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| Keywords: | IAA-oxidase Phaseolus vulgaris. |
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