Effects of spermine and plant hormones on nuclear protein phosphorylation in Ranunculus petioles

被引：5

作者：

Chang, SC ^{[1
]}

Kang, BG ^{[1
]}

机构：

[1] Yonsei Univ, Dept Biol, Seoul 120749, South Korea

来源：

JOURNAL OF PLANT PHYSIOLOGY | 1999年 / 154卷 / 04期

关键词：

auxin; ethylene; petiole elongation; protein phosphorylation; Ranunculus sceleratus; spermine;

D O I：

10.1016/S0176-1617(99)80284-3

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

In isolated nuclei, polyamines were found to stimulate the phosphorylation of a 17.5, a 26, a 30 and a 35 kDa proteins. Spermine exhibited the most pronounced effect on protein phosphorylation among the polyamines tested for the 17.5 and 35 kDa proteins. Results of protein phosphorylation patterns in nuclei isolated from petiole tissue pretreated with IAA, ethylene, or spermine indicate that pretreatments with IAA and ethylene result in dephosphorylation of the 30 kDa protein, while spermine pretreatment leads to phosphorylation. For the soluble (cytosolic) fraction, spermine causes dephosphorylation of a 34 kDa protein, while auxin and ethylene have no effect on this process. These results suggest that there is correlation between phosphorylation/dephosphorylation of the 30 kDa nuclear protein and the control of cell growth in Ranunculus petioles.

引用

页码：463 / 470

页数：8

共 24 条

[1] PHOSPHORYLATION OF ORNITHINE DECARBOXYLASE BY A POLYAMINE-DEPENDENT PROTEIN-KINASE [J].