Synergistic influence of sucrose and abscisic acid on the genes involved in starch synthesis in maize endosperm
Synergistic influence of sucrose and abscisic acid on the genes involved in starch synthesis in maize endosperm
复制标题
蔗糖和脱落酸对玉米胚乳淀粉合成相关基因的协同影响
DOI：
10.1016/j.carres.2011.05.003
复制
发表时间：
2011-09-27
影响因子：
3.1
通讯作者：
Huang, Yubi
中科院分区：
文献类型：
--
作者：
Chen, Jiang;Huang, Binquan;Huang, Yubi
淀粉是植物贮藏器官中的主要碳源，其合成由四种主要的酶调控，即ADP-葡萄糖焦磷酸化酶、淀粉合成酶、淀粉分支酶和淀粉去分支酶。关于这些关键酶的功能有很多可用的信息，但对它们的转录调控知之甚少。为了了解淀粉生物合成的转录调控，本工作对24个淀粉基因的表达谱进行了研究。结果表明，在所观察到的24个淀粉基因中，有15个基因在玉米胚乳中发生了主要的转录变化，其中大部分在胚乳发育的早期和中期上调。蔗糖、脱落酸(ABA)和吲哚-3-乙酸(IAA)与15个基因的表达呈显著正相关，说明糖和激素可能参与了淀粉合成的调控。此外，我们还发现脱落酸和蔗糖在调节这些基因的表达上存在相互作用。(C)2011爱思唯尔有限公司。保留所有权利。
Starch is the major carbon reserve in plant storage organs, the synthesis of which is orchestrated by four major enzymes, ADP-glucose pyrophosphorylase, starch synthase, starch-branching enzyme and starch-debranching enzyme. There is available much information on the function of these key enzymes; however, little is known about their transcriptional regulation. In order to understand the transcriptional regulation of starch biosynthesis, the expression profiles of 24 starch genes were investigated in this work. The results showed major transcriptional changes for 15 of the 24 starch genes observed in maize endosperm, most of which are elevated at the early and middle stages of the developing endosperm. Sucrose, abscisic acid (ABA) and indole-3-acetic acid (IAA) had a significant correlation with the expression of 15 genes, indicating that sugars and phytohormones might take part in the regulation of starch synthesis. Also, we found that there is interaction of abscisic acid and sucrose on regulation the expression of these genes. (C) 2011 Elsevier Ltd. All rights reserved.