摘要
利用基于液相色谱串联Orbitrap质谱(Q Exactive)的非标定量(Label-free)技术,对小麦抗病单基因近等基因系Taichung29*6/Yr10和背景品种Taichung29叶片的蛋白质表达进行了比较分析。经MASCOT软件搜库,在两个样品中共同鉴定到2 257个蛋白,其中有准确定量信息的蛋白共1 549个,含量变化大于2倍的差异蛋白有102个。对102个差异表达蛋白进行了Gene Ontology(GO)功能注释和分析,发现他们多数定位于细胞基质和核糖体等细胞器,具备结合、催化等功能,主要参与代谢、细胞过程、应激等生物学进程,其中超氧化物歧化酶、甲硫氨酰氨肽酶、溶酶体-β-葡萄糖苷酶和铁蛋白等可能与小麦抗病单基因近等基因系Taichung 29*6/Yr10的抗病性有一定相关性。
In this study, the protein expression of a wheat near-isogenic line pair, Taichung 29＊6/Yr10 and Taichung 29, have been compared with label-free quantitative proteomic approach based on liquid chromatography tandem Q Exactive hybrid quadrupole-Orbitrap mass spectrometer. By MASCOT database search, a total of 2 257 proteins were identified from both of the samples, and among of them 1 549 proteins were accurately quantitated and 102 differentially expressed proteins（〉2 fold）were detected. Gene ontology（GO）analysis showed that these differential proteins were mainly localized to cell matrix and organelles such as ribosome, and mainly involved in binding and catalytic functions. Among of 102 proteins which mainly take part in metabolic, cellular and stress responses processes, Superoxide dismutase, Methionine aminopeptidase, Lysosomal-β-glucosidase, and Ferritin may play some important roles in Taichung 29＊6/Yr10 resistance to Yellow rust.
出处
《生物技术通报》
CAS
CSCD
北大核心
2014年第6期88-95,共8页
Biotechnology Bulletin
基金
国家"863"高技术研究发展计划(2008AA10Z115)
国家自然科学基金项目(30971874)
转基因生物新品种培育科技重大专项(2009ZX08012-011B)
