苋菜幼苗中花旗松素合成的激素调控。

The hormonal control of amaranthin synthesis in Amaranthus caudatus seedlings.

机构信息

Plant Cell Metabolism Laboratory, Department of Botany, The University, BS8 1UG, Bristol, UK.

出版信息

Planta. 1975 Jan;127(3):207-12. doi: 10.1007/BF00380717.

Abstract

Exogenous gibberellic acid, A3 (GA3) inhibits phytochrome mediated betacyanin synthesis in seedlings of Amaranthus caudatus. The growth retardants, β-chloroethyl-trimethylammonium chloride (CCC), 'isopropyl-4'-(triethylammonium chloride)-5'-methylphenyl piperidine carboxylate (AMO 1618) and tributyl-2,4,-dichlorobenzylphosphonium chloride (phosphon D) enhance pigment synthesis. Retardant stimulation of pigment synthesis is overcome by GA3 application. Besides lowering endogenous GA levels the retardants inhibit protein synthesis by as much as 25%. Retardant inhibition of protein synthesis is not overcome by GA3. The results suggest that amaranthin synthesis in Amaranthus caudatus can be directly controlled by endogenous GA. GA3 has no effect on kinin induced dark pigment synthesis. Kinins, however, do not overcome GA3 inhibition of pigment synthesis in the light.

摘要

外源赤霉素 A3（GA3）抑制苋菜幼苗中光敏色素介导的甜菜碱合成。生长延缓剂，β-氯乙基-三甲基氯化铵（CCC），异丙基-4'-（三乙基氯化铵）-5'-甲基苯基哌啶羧酸酯（AMO 1618）和三丁基-2,4,二氯苄基膦酸酯（phosphon D）可促进色素合成。GA3 的应用可克服延缓剂对色素合成的刺激作用。除了降低内源性 GA 水平外，延缓剂还可抑制高达 25%的蛋白质合成。GA3 不能克服延缓剂对蛋白质合成的抑制作用。结果表明，苋菜中苋菜素的合成可以直接受内源性 GA 控制。GA3 对激肽诱导的暗色素合成没有影响。然而，激肽不能克服 GA3 对光下色素合成的抑制作用。