| 1 | Transcriptome Comparison of Susceptible and Resistant Wheat in Response to Powdery Mildew Infection显示文摘Powdery mildew(Pm) caused by the infection of Blumeria graminis f.sp.tritici(Bgt) is a worldwide crop disease resulting in significant loss of wheat yield.To profile the genes and pathways responding to the Bgt infection,here,using Affymetrix wheat microarrays,we compared the leaf transcriptomes before and after Bgt inoculation in two wheat genotypes,a Pm-susceptible cultivar Jingdong 8(S) and its near-isogenic line(R) carrying a single Pm resistant gene Pm30.Our analysis showed that the original gene expression status in the S and R genotypes of wheat was almost identical before Bgt inoculation,since only 60 genes exhibited differential expression by P = 0.01 cutoff.However,12 h after Bgt inoculation,3014 and 2800 genes in the S and R genotype,respectively,responded to infection.A wide range of pathways were involved,including cell wall fortification,flavonoid biosynthesis and metabolic processes.Furthermore,for the first time,we show that sense-antisense pair genes might be participants in wheat-powdery mildew interaction.In addition,the results of qRT-PCR analysis on several candidate genes were consistent with the microarray data in their expression patterns.In summary,this study reveals leaf transcriptome changes before and after powdery mildew infection in wheat near-isogenic lines,suggesting that powdery mildew resistance is a highly complex systematic response involving a large amount of gene regulation. | Mingming Xin Xiangfeng Wang Huiru Peng Yingyin Yao Chaojie Xie Yao Han ZhongfuNi Qixin Sun | 2012 | Genomics, Proteomics & Bioinformatics2012，10，2： | 3 |
| 2 | Differential gene expression between cross-fertilized and self-fertilized kernels during the early stages of seed development in maize显示文摘In maize, cross-fertilization advantage was observed during the early stage of embryo development and grain filling. In this study, we performed screening of differentially expressed genes between maize cross-fertilized and self-fertilized kernels at 5, 10, and 15 days after pollination (DAP) by differential display technique. The results indicated that the patterns of gene expression altered obviously in crossfertilized kernels as compared to self-fertilized kernels. Both quantitative and qualitative differences were observed. Four differentially expressed cDNAs were cloned and sequenced, their expression patterns were confirmed by reverse-Northern blot. Sequence analysis and database search revealed that two of them were new sequences; the other two were methyl-binding domain protein (MBD) andphos phoenolpyruvate carboxylase (PEPC), respectively, and it is concluded that the altered gene expression may be responsible for theobserved maize heterosis. | FanrongMeng ZhongfuNi LiminWu QixinSun | 2005 | 中国生物学文摘2005，19，4： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员