拟南芥IQM1涉及主根生长对茉莉酸甲酯的反应  

IOM1 is Involved in Response of Primary Root Growth to Methyl Jasmonate in Arabidopsis

作　　者：莫忠蓁 黄章科 周玉萍[1] 黄小玲[1] 田长恩[1] 

机构地区：[1]广州大学生命科学学院植物抗逆基因功能研究广州市重点实验室,广东广州510006

出　　处：《生物技术通讯》2015年第3期399-402,共4页Letters in Biotechnology

基　　金：国家自然科学基金(31170204;31470014);羊城学者科研项目(12A001G)

摘　　要：目的:进一步找出拟南芥钙调素结合蛋白IQM1介导茉莉酸信号转导的证据。方法:比较分析IQM1基因的功能缺失突变体iqm1-1及其野生型幼苗在茉莉酸甲酯(Me JA)处理后的主根长度和JAZ(jasmonate ZIM-domain)家族基因的表达。结果:Me JA抑制iqm1-1及其野生型植株的主根生长,但iqm1-1对Me JA反应的敏感度比野生型弱;与此结果一致,iqm1-1幼苗中几个JAZ基因表达上调。结论:IQM1介导茉莉酸信号转导,参与对植物根生长的调节。Objective： To further obtain the evidences that IQM1 mediates jasmonate signal transduction.Methods： Primary root length and expression of jasmonate ZIM-domain（JAZ） genes in iqm1-1,a loss-of-function mu-tant of IQM1,and conresponding wild- type seedings treated with methyl jasmonate（Me JA） were compared.Results： Primary root growth of iqm1- 1 and its wild-type seedings were inhibited by Me JA,though sensitivity of iqm1-1 in response to Me JA was weaker than that of wild-type.Consistent with this,several of JAZ genes wasup-regulated in iqm1-1 seedings.Conclusion： IQM1 mediates jasmonate signal transduction and is involved in reg-ulation of root growth.

关 键 词：拟南芥钙调素结合蛋白IQM1 茉莉酸甲酯 主根长度 JAZ基因家族 

分 类 号：Q943.2[生物学—植物学]