Identification of putative drought-responsive genes in rice using gene co-expression analysis
文献类型： 外文期刊
作者： Lv, Yanmei 1 ; Xu, Lei 2 ; Dossa, Komivi 3 ; Zhou, Kun 1 ; Zhu, Mingdong 1 ; Xie, Hongjun 1 ; Tang, Shanjun 1 ; Yu, Yaying 1 ; Guov, Xiayu 4 ; Zhou, Bin 1 ;
作者机构： 1.Hunan Rice Res Inst, Changsha 410125, Hunan, Peoples R China
2.Hubei Univ Chinese Med, Coll Pharm, Wuhan, Hubei, Peoples R China
3.Wuhan Benagen Tech Solut Co Ltd, Wuhan 430070, Hubei, Peoples R China
4.State Key Lab Hybrid Rice, Changsha 410125, Hunan, Peoples R China
5.Minist Agr, Lab Ind Rice Genet & Breeding Middle & Lower Reac, Changsha 410125, Hunan, Peoples R China
关键词： drought; transcriptome; WGCNA; co-expressed genes; network analysis
期刊名称：BIOINFORMATION （ 影响因子：1.9； 五年影响因子：1.7 ）
ISSN： 0973-8894
年卷期： 2019 年 15 卷 7 期
页码：
收录情况： SCI
摘要： Drought is one of the major abiotic stresses causing yield losses and restricted growing area for several major crops. Rice being a major staple food crop and sensitive to water-deficit conditions bears heavy yield losses due to drought stress. To breed drought tolerant rice cultivars, it is of interest to understand the mechanisms of drought tolerance. In this regard, large amount of publicly available transcriptome datasets could be utilized. In this study, we used different transcriptome datasets obtained under drought stress in comparison to normal conditions (control) to identify novel drought responsive genes and their underlying molecular mechanisms. We found 517 core drought responsive differentially expressed genes (DEGs) and different modules using gene co-expression analysis to specifically predict their biological roles in drought tolerance. Gene ontology and KEGG analyses showed key biological processes and metabolic pathways involved in drought tolerance. Further, network analysis pinpointed important hub DEGs and major transcription factors regulating the expression of drought responsive genes in each module. These identified novel DEGs and transcription factors could be functionally characterized using systems biology approaches, which can significantly enhance our knowledge about the molecular mechanisms of drought tolerance in rice.
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