南方农业学报2011，Vol.42Issue(1)：6-10,5.
乙烯利调控甘蔗基因差异表达研究
Ethephon regulated differential gene expression in sugarcane
摘要
Abstract
[Objective]The present experiment was conducted to develop the optimized cDNA-AFLP protocol and an efficient silver staining system to study the differential expressions of genes regulated by ethephon, and to understand the molecular mechanism of ethephon regulated growth and development in sugarcane. [Method]Forty-day old plants of sugarcane variety ROC16 were foliarly sprayed with ethephon (200 mg/L), and the leaves were sampled at 0,3,6, 12,24 and 48 hours to extract the total RNA and establish the cDNA-AFLP protocol and silver staining system. Using combinations of 193 primer pairs, some transcript derived fragments (TDFs) were isolated, cloned, detected with reverse Northem blotting and sequenced. [Result]The cDNA-AFLP analysis results showed high level of polymorphism amongst the treatment and control. 35 to 80 bands were amplified in each sample. Eleven samples with 24 TDFs did not display any differential expression, and the ratio of hypocrite positive TDFs was recorded as 46％. The chitinase I(CHI), glutathione S-transferase(GST) ,auxin-responsive protein(ARP),light harvesting chlorophyll a/b-binding protein (LHC),nuclear binding protein gene and a set of unknown genes were differentially expressed in the ethephon treatments. CHI and GST have an important role in resistance to stress and various diseases, while LHC and nuclear binding protein are related to light harvesting and CO2 fixation in photosynthesis,respectively. [Conclusion]The cDNA-AFLP technique was found to be very effective and feasible to study the differential expression of genes in sugarcane. Ethophen was found to regulate the expression of genes related to the primary metabolism of sugarcane and resistance to disease and stress by regulating the expression of related genes.关键词
甘蔗/乙烯利/cDNA-AFLP/基因差异表达Key words
sugarcane: ethephon/ cDNA-AFLP/ differential gene expression分类
农业科技引用本文复制引用
魏源文,邓智年,黄诚梅,李杨瑞..乙烯利调控甘蔗基因差异表达研究[J].南方农业学报,2011,42(1):6-10,5.基金项目
国家科技支撑计划项目(2007BAD30B02) （2007BAD30B02）
广西科技基础条件平台建设项目(09-077-08) （09-077-08）
广西科学研究与技术开发计划项目(桂科能0815011-6-1) （桂科能0815011-6-1）
广西科学基金项目(桂科基0778006-6) （桂科基0778006-6）
广西科学基金项目应用基础研究专项项目(桂科基0991021) （桂科基0991021）
广西农业科学院科技发展基金项目(2007022) （2007022）
