热带作物学报2018，Vol.39Issue(3)：472-479,8.DOI:10.3969/j.issn.1000-2561.2018.03.011
木薯内源ABA含量与块根淀粉积累关系研究
The Relationship Between Endogenous Abscisic Acid Content and Starch Accumulation in Root Tuber of Cassava
摘要
Abstract
The relationship between endogenous abscisic acid and starch accumulation in the root tuber of cassava was studied by measuring abscisic acid content,key enzymes activities and starch content in the process of starch accumulation with different starch content cassava cultivars RS01 and SC124 as the materials.The results showed that the content of ABA in the cassava cultivars with different starch contents was different,especially in the late growth stage.The ABA content of leaves,stems and roots in the starch content was higher than that in the control group(ADPGpase)(p＜0.05).The activities of sucrose phosphate synthase(SPS),soluble starch synthase (SSS)and starch branching enzyme were higher than those with low starch content.The results showed that the content of ABA in leaves was different from that of adenosine diphosphate glucose pyrophosphorylase(p＜0.05),and the activities of soluble starch synthase(SSS)and starch branching enzyme(SBE)were significantly correlated with sucrose phosphate synthase(SPS)activity.There was a significant positive correlation between ABA and ADPGpase,and there was a significant positive correlation with the activity of soluble starch synthase (SSS)and starch branching enzyme(SBE).The ABA content of roots was similar to that of tuberous gland(p＜0.05),and it was positively correlated with the activities of sucrose phosphate synthase(SPS),and the activities of starch-branched starch synthase(SBE)were extremely significantly negatively correlated.There was a significant positive correlation between ABA content and root starch accumulation.It can be seen that cassava endogenous ABA plays an important role in the accumulation of starch in the roots.关键词
木薯/内源ABA/淀粉合成关键酶/淀粉积累Key words
cassava/endogenous abscisic acid/starch synthesis enzymes/starch accumulation分类
农业科技引用本文复制引用
罗兴录,潘晓璐,朱艳梅..木薯内源ABA含量与块根淀粉积累关系研究[J].热带作物学报,2018,39(3):472-479,8.基金项目
亚热带农业生物资源保护与利用国家重点实验室开放课题(No.SKLCDSA-b201609) （No.SKLCDSA-b201609）
广西科学研究与技术开发计划项目(桂科重14121005-2-1) （桂科重14121005-2-1）
国家现代农业产业体系广西薯类产业创新团队“薯类产业功能专家”(No.nycytxgxcxtd-03-11-2) （No.nycytxgxcxtd-03-11-2）
南宁市科学研究与开发计划项目(No.201109044B). （No.201109044B）
