Differential expression profiles and pathways of genes in sugarcane leaf at elongation stage in response to drought stress
文献类型： 外文期刊
作者： Li, Changning 1 ; Nong, Qian; Solanki, Manoj Kumar 1 ; Liang, Qiang 1 ; Xie, Jinlan 1 ; Liu, Xiaoyan 1 ; Li, Yijie; 1 ;
作者机构： 1.Chinese Acad Agr Sci, Guangxi Acad Agr Sci,Minist Agr, Sugarcane Res Ctr,Guangxi Key Lab Sugarcane Genet, Sugarcane Res Inst,Key Lab Sugarcane Biotechnol &, Nanning 530007, Guangxi, Peoples R China
2.Chinese Acad Agr Sci, Guangxi
期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）
ISSN： 2045-2322
年卷期： 2016 年 6 卷
页码：
收录情况： SCI
摘要： Water stress causes considerable yield losses in sugarcane. To investigate differentially expressed genes under water stress, a pot experiment was performed with the sugarcane variety GT21 at three water-deficit levels (mild, moderate, and severe) during the elongation stage and gene expression was analyzed using microarray technology. Physiological parameters of sugarcane showed significant alterations in response to drought stress. Based on the expression profile of 15,593 sugarcane genes, 1,501 (9.6%) genes were differentially expressed under different water-level treatments; 821 genes were upregulated and 680 genes were downregulated. A gene similarity analysis showed that approximately 62.6% of the differentially expressed genes shared homology with functional proteins. In a Gene Ontology (GO) analysis, 901 differentially expressed genes were assigned to 36 GO categories. Moreover, 325 differentially expressed genes were classified into 101 pathway categories involved in various processes, such as the biosynthesis of secondary metabolites, ribosomes, carbon metabolism, etc. In addition, some unannotated genes were detected; these may provide a basis for studies of water-deficit tolerance. The reliability of the observed expression patterns was confirmed by RT-PCR. The results of this study may help identify useful genes for improving drought tolerance in sugarcane.
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