紫外光和蓝光调控查尔酮合成酶基因表达的研究

被引：1

作者：

闫海 ^{[1
]}

王霞 ^{[2
]}

机构：

[1] 塔里木大学植物科技学院

[2] 塔里木大学动物科技学院

来源：

塔里木大学学报 | 2005年 / 04期

关键词：

紫外光; 蓝光; 光信号转导; 查尔酮合成酶; 光调控;

D O I：

暂无

中图分类号：

Q943.2 [植物基因工程];

学科分类号：

071007 ; 090102 ;

摘要：

UV-B（280 nm320 nm）、UV-A（320 nm390nm）和蓝光（390 nm500nm）经不同光受体和信号传递途径控制植物发育的各个方面。已知的蓝光/UV-A受体有隐花色素CRY1和CRY2,向光性受体有趋光素。氧化还原过程在隐花色素和趋光素信号转导过程中起重要作用。专一的UV-B光受体尚未被鉴定出,存在许多可能的UV-B信号传递途径。拟南芥查尔酮合成酶（CHS）的紫外光和蓝光转录调控成为研究热点。光受体突变体实验表明存在不同的UV-A/蓝光和UV-B光感知系统调控CHS的表达。拟南芥细胞悬浮培养物实验表明UV-B和CRY1信号传递途径在动力学上和药理学上不同。影响诱导CHS转录的启动子元件和转录因子现已被鉴定出。UV-B、隐花色素和光敏色素信号传递途径之间的相互作用调控CHS表达。UV-B途径与UV-A/蓝光途径的协同相互作用使CHS最大量表达。另外,专一的光敏色素经不同的增强和相互作用正调控CRY1途径,负调控UV-B途径。

引用

页码：47 / 52

页数：6

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