Studies on the destruction of indole-3-acetic acid by a species of Arthrobacter I. On the induction of the enzyme responsible for the destruction |
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Authors: | MINO YSUKE |
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Affiliation: | Division of Entomology and Plant Physiology, Obihiro Zootechnical University Obihiro |
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Abstract: | - The induction of an IAA-destroying enzyme in Arthrobacter sp.that can utilize IAA as its sole source of carbon and nitrogenwas investigated.
- 1. The enzyme was most effectively inducedby 103 to2x103 M IAA, at pH 6.5.
- 2. All testedIAA analogs were unable to induce the enzyme.Analogs otherthan indole-3-lactic acid were rather inhibitoryon the inductionwith IAA.
- 3. The induction period was shortened with the ageof culturein both polypeptone and acetate media.
- 4. Pretreatmentof the bacterium with IAA caused a shorteningof the inductionperiod.
- 5. The induction was inhibited by various antibiotics,aminoacid analogs and nucleobase analogs.
- 6. The inductionwas less remarkable in actively proliferatingcells than itwas in slowly proliferating ones.
(Received July 1, 1967; ) |
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