文献类型：期刊文章

作　　者：王宁宁[1] 王勇[1] 王淑芳[1] 朱亮基[1] 张韧[2]

机构地区：[1]南开大学生物化学与分子生物学系,天津300071 [2]wollongong大学生物系

出　　处：《植物生理学报（0257-4829)》

年　　份：1998

卷　　号：24

期　　号：3

起止页码：305-308

语　　种：中文

收录情况：CAS、CSCD、CSCD2011_2012、普通刊

摘　　要：The plasma membrane fortion isolated from primp leaves of 14 d soybean shoot showed Protein kinase (PK) and protein phosphatase (PP) activities (Fig. 1 ), and these activities declined dramaically when the leaves underwent senescence-inducing treatment (Table 1 ). 6-BA pretreatment, which showed retarding effect on soybean leaf senescence, could sustain the activities of both PKs and PPs during the senescence-inducing treatment (Table 1 ). The results of autoradiogra phy suggested that the main PKs whose activities declined during leaf senescence were calcium-dependent Protein kinases (Fig. 3). The potent and specif ic inhibitor of Protein phosphatase 1 and 2A, okadric acid, could fasten leaf senescence. These results impied thatretaining the balance of plasma membrane protein phosphorylation/ dephosphorylation was the key action of exogenous 6-BA in retarding leat senescence.

关 键 词：大豆叶片 衰老 质膜蛋白磷酸化  脱磷酸化  

分 类 号：Q945[植物生产类] S565.101]