Jasmonic acid prevents the accumulation of cyclin B1 1 and CDK-Bin synchronized tobacco BY-2 cells.pdfVIP

下载本文档

1
0
约2.06万字
约 5页
2017-04-13 发布于江苏
举报
版权申诉

Jasmonic acid prevents the accumulation of cyclin B1 1 and CDK-Bin synchronized tobacco BY-2 cells.pdf

1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

Jasmonic acid prevents the accumulation of cyclin B1 1 and CDK-Bin synchronized tobacco BY-2 cells

FEBS Letters 572 (2004) 118–122 FEBS 28664Jasmonic acid prevents the accumulation of cyclin B1;1 and CDK-B in synchronized tobacco BY-2 cells Agnieszka Swiazteka, Abdelkrim Azmia, Hilde Stalsb, Dirk Inzeb, Harry Van Onckelena,* aLaboratory of Plant Biochemistry and Physiology, Department of Biology, University of Antwerp (UA), Universiteitsplein 1, B-2610 Antwerp, Belgium bDepartment of Plant Systems Biology, VIB-Ghent University, Technologie Park 927, B-9052 Ghent, Belgium Received 2 June 2004; revised 7 July 2004; accepted 9 July 2004 Available online 21 July 2004 Edited by Ulf-Ingo Fl€uggeAbstract Jasmonic acid (JA) plays a crucial role in plant fertility and defense responses. It exerts an inhibitory effect on plant growth when applied exogenously. This effect seems to be somehow related to a negative regulation of cell cycle progres- sion in the meristematic tissues. In this report, we focus on the molecular events that occur during JA-induced G2 arrest. We demonstrate that JA prevents the accumulation of B-type cyclin- dependent kinases and the expression of cyclin B1;1, which are both essential for the initiation of mitosis. This feature suggests the existence of an early G2 checkpoint that is affected by JA. 2004 Published by Elsevier B.V. on behalf of the Federation of European Biochemical Societies. Keywords: Jasmonic acid; Cell cycle; Cyclin B1;1; Roscovitine; G2/M transition1. Introduction Cyclin-dependent kinases (CDKs) play a central regulatory role during cell division in all eukaryotic cells [1]. Their activity is strictly controlled at the time of the G1/S and G2/M tran- sitions of the cell cycle by means of phosphorylation and in- teractions with regulatory subunits [2]. One class of those subunits, called cyclins, determines the substrate specificity and subcellular localization of the kinase [3]. Cyclins are expressed at specific stages of the cell cycle and are rapidly degraded. There are three major types of cyclins in plants. D-type cyclin