豌豆上胚轴中生长素调节的蛋白质磷酸化变化

Auxin-regulated changes in protein phosphorylation in pea epicotyls.

作者信息

Reddy A S, Chengappa S, Poovaiah B W

出版信息

Biochem Biophys Res Commun. 1987 Apr 29;144(2):944-50. doi: 10.1016/s0006-291x(87)80055-4.

Abstract

Auxins regulate various aspects of plant growth and development. However, the mechanism by which these hormones elicit diverse physiological processes is not clear. We present evidence for the role of auxin in protein phosphorylation and the possible involvement of calmodulin in auxin-induced changes. In the presence of auxin, phosphorylation of 23,000, 82,000, 105,000 and 110,000 molecular weight polypeptides markedly decreased whereas phosphorylation of 19,000, 24,000 and 28,000 molecular weight polypeptides increased. These results open up a new experimental approach in understanding the molecular mechanism by which auxins regulate various physiological processes in plants.

摘要

生长素调节植物生长和发育的各个方面。然而，这些激素引发多种生理过程的机制尚不清楚。我们提供了生长素在蛋白质磷酸化中的作用以及钙调蛋白可能参与生长素诱导变化的证据。在生长素存在的情况下，分子量为23000、82000、105000和110000的多肽的磷酸化明显减少，而分子量为19000、24000和28000的多肽的磷酸化增加。这些结果为理解生长素调节植物各种生理过程的分子机制开辟了一种新的实验方法。