biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 28:219, 1986 | DOI: 10.1007/BF02894600

Auxin activity of 3-hydroxymethyl oxindole and 3-methylene oxindole in oat

R. N. Bhattacharyya1, K. K. Chattopadhyay1, P. S. Basu1
1 Department of Botany, University of Burdwan, Burdwan 713 104, West Bengal, India

Two photooxidation products of indol-3-ylacetic acid (IAA), 3-hydroxymethyl oxindole (HMO) and 3-methylene oxindole (Meox) were almost as effective as IAA in stimulation of growth of oat (Avena saliva cv. Kent) coleoptile sections. The IAA failed to give stimulation of growth after pretreatment of the coleoptiles with chemicals inhibiting oxidation of IAA, but the growth promoting effects of HMO or Meox remained unaffected by such pretreatment. After pretreatment with the chemicals which can form an adduct with Meox, the growth promoting activities of IAA, HMO or Meox were lost showing the involvement of the oxindole pathway of IAA metabolism in IAA action. Time-course experiments also showed that the stimulatory effects of HMO and Meox were the same as IAA.

Received: April 28, 1984; Accepted: October 9, 1984; Published: May 1, 1986  Show citation

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Bhattacharyya, R.N., Chattopadhyay, K.K., & Basu, P.S. (1986). Auxin activity of 3-hydroxymethyl oxindole and 3-methylene oxindole in oat. Biologia plantarum, 28(3), 219. doi: 10.1007/BF02894600
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