数字农科院2.0

Transcriptomics for Drought Stress Mediated by Biological Processes in-relation to Key Regulated Pathways in Gossypium darwinii

文献类型： 外文期刊

作者： Xu, Cuilian;Ilyas, Muhammad Kashif;Magwanga, Richard Odongo;Lu, Hejun;Khan, M. Kashif Riaz;Zhou, Zhongli;Li, Yujun;Kuang, Zhengcheng;Javaid, Asif;Ibrar, Danish;Ghafoor, Abdul;Wang, Kunbo;Liu, Fang;Chen, Haodong

作者机构：

关键词： Gossypium darwinii;Abiotic stress;Transcriptome sequencing;Gene expression

期刊名称： MOLECULAR BIOLOGY REPORTS

ISSN： 0301-4851

年卷期： 2022 年

页码：

收录情况： SCIE（2022版）

摘要： Background Wild cotton Gossypium darwinii, an allotetraploid harbours important traits useful for tolerating abiotic stress, i.e., drought, salt and good genetic stability, hence these characteristics can be transferred to cultivated cotton for genetic improvement. Materials and methods In this study, we analyzed the RNA-seq transcriptomes from leaves of G. darwinii seedlings with and without drought stress. A total of 86.7 million valid reads with an average length of 95.79 bp were generated from the two samples and 58,960 transcripts with a length of more than 500 bp were assembled. We searched the known proteins on the strength of sequence similarity; these transcripts were annotated with COG, KEGG and GO functional categories. According to gene expression abundance RPKM value, we carried out RT-qPCR analysis to determine the expression pattern of the obtained transcription factors. Results A total of 58,960 genes was differentially expressed (DEG), with 32,693 and 25,919 genes found to be upregulated and downregulated, respectively. Through gene ontology and KEGG pathways, the upregulated genes were found to associate with all the GO terms, molecular functions (MF), biological process (BP) and cellular components (CC), which are highly linked to enhancing drought stress tolerance. Conclusion The study provides an in-depth knowledge of regulation of pathways and genes involved in photosynthesis during drought stress in G. darwinii. These pathways and genes were found to be significantly downregulated and this information could be further utilized by cotton breeders in developing a more drought tolerant cotton germplasm.

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