Occurrence and metabolism of 7-hydroxy-2-indolinone-3-acetic acid in Zea mays |
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Authors: | Lewer P Bandurski R S |
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Affiliation: | Department of Botany and Plant Pathology, Michigan State University, East Lansing 48824-1312, USA. |
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Abstract: | 7-Hydroxy-2-indolinone-3-acetic acid was identified as a catabolite of indole-3-acetic acid in germinating kernels of Zea mays and found to be present in amounts of ca 3.1 nmol/kernel. 7-Hydroxy-2-indolinone-3-acetic acid was shown to be a biosynthetic intermediate between 2-indolinone-3-acetic acid and 7-hydroxy-2-indolinone-3-acetic acid-7'-O-glucoside in both kernels and roots of Zea mays. Further metabolism of 7-hydroxy-2-[5-3H]-indolinone-3-acetic acid-7'-O-glucoside occurred to yield tritiated water plus, as yet, uncharacterized products. |
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