A plant growth retardant related to chlamydocin and its proposed mechanism of action |
| |
Authors: | Tani Hiroko Honma Tamaki Fujii Yuzo Yoneyama Koichi Nakajima Hiromitsu |
| |
Affiliation: | Department of Agricultural Chemistry, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan. |
| |
Abstract: | A comparison of the plant growth retardant activity of the chlamydocin analogues, compound 1, six derivatives from 1 and 2, and two synthetic analogues revealed that there are two types of retardant in chlamydocin analogues. One, for example in compound 1, requires an oxygen atom at C-8 of the 2-aminodecanoic acid moiety to show retardant activity. The other, for example in compound 8, requires no oxygen atom at C-8 but requires a specific alkyl group chain length for activity. To determine the differences in mode of action of both types of retardant, rice seedlings were separately treated with compounds 1 and 8, and after appearance of dwarfism, their endogenous ABA and GA(1) levels were determined and compared to those of the control. Treatment with 1 (10 nmol/plant) increased ABA levels 4 times higher than that of the control and decreased GA(1) levels to 20% of that of the control. Treatment with 8 (30 nmol/plant) did not affect the ABA level but decreased GA(1) content to 5% of that of the control. |
| |
Keywords: | Oryza sativa Gramineae Plant growth retardant Liquid phase synthesis Cyclic tetrapeptide Structure-activity relationship ELISA Abscisic acid Gibberellins Rice |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|