生物技术通报 ›› 2018, Vol. 34 ›› Issue (12): 116-124.doi: 10.13560/j.cnki.biotech.bull.1985.2018-0522

• 研究报告 • 上一篇    下一篇

低温胁迫下不同甘蔗品种的转录组比较分析

唐仕云1, 杨丽涛2, 李杨瑞1, 2   

  1. 1. 广西农科院甘蔗研究所,南宁 530007;
    2. 亚热带农业生物资源保护与利用国家重点实验室,南宁 530005
  • 收稿日期:2018-06-07 出版日期:2018-12-26 发布日期:2018-12-24
  • 作者简介:唐仕云,博士,副研究员,研究方向:甘蔗遗传和育种;E-mail:tangshiyunok@163.com
  • 基金资助:
    国家现代农业产业技术体系广西甘蔗创新团队建设专项(gjnytxgxcxtd-03-01),国家甘蔗产业技术体系建设专项项目(CARS_17015),广西创新驱动发展专项资金项目(桂科AA17202042-4),广西八桂学者和特聘专家专项经费(2013)

Comparative Analysis on Transcriptome Among Different Sugarcane Cultivars Under Low Temperature Stress

TANG Shi-yun1, YANG Li-tao2, LI Yang-rui1, 2   

  1. 1. Sugarcane Research Institute,Guangxi Academy of Agricultural Sciences,Nanning 530007;
    2. State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources,Nanning 530005
  • Received:2018-06-07 Published:2018-12-26 Online:2018-12-24

摘要: 对低温胁迫和常温处理的桂糖08-1180和ROC22进行转录组测序,比较不同甘蔗品种抗寒性分子机制的差异。结果表明:测序共产生57.41 G 的clean bases,拼接后获得183 515个unigenes,将获得的基因在NR、NT、Swiss-Prot、PFAM、KOG/COG、KEGG、GO数据库进行比对,有110 021个unigenes获得注释。低温胁迫下,桂糖08-1180有16 145个基因的表达发生了显著变化,ROC22有20 317个基因的表达发生了显著变化,且均表现为上调表达基因多于下调表达基因。ROC22与桂糖08-1180共有13 113个差异表达基因相同,ROC22特有7 204个差异表达基因,桂糖08-1180特有3 032个差异表达基因。对2个品种的共有差异表达基因进行富集分析,在对寒害逆境反应、膜系统、光合作用等的功能小类富集较多。对特有差异表达基因进行富集分析,桂糖08-1180在DNA整合、RNA聚合酶、ADP结合及代谢酶中富集较多,而ROC22在有机化合物的合成、运输和转运蛋白活性相关的条目富集得较多。

关键词: 甘蔗, 低温胁迫, 转录组

Abstract: In order to comparatively analyze the variations of molecular mechanism among different cultivars in cold resistance,RNA-seqs of GT08-1180 and ROC22 were conducted under cold stress and normal temperature. The results showed that a total of 57.41 G clean reads were produced and 183515 unigenes were obtained after de novo assembly. All unigenes were annotated in NR,NT,Swiss-Prot,PFAM,KOG/COG,KEGG,and GO,and 110 021 unigenes were functionally annotated. There were 16 145 and 20 317 differentially expressed genes(DEGs)in GT08-1180 and ROC22 respectively in the cold stress. In addition,there were more up-regulated DEGs than down-regulated DEGs in both GT08-1180 and ROC22. Total 13 113 DEGs were found to be the same in both GT08-1180 and ROC22,while 7 204 specific DEGs in ROC22,and 3 032 specific DEGs in GT08-1180. The result of GO enrichment analysis of the common DEGs in 2 varieties showed that common DEGs were enriched in sub-groups of cold stress response,membrane system,and photosynthesis. GT08-1180 enriched more in DEGs related to DNA integration,RNA polymerase,ADP binding,and metabolic enzymes. ROC22 presented more enrichment in DEGs related to synthesis and transfer of organic substances,and transporter proteases.

Key words: sugarcane, cold stress, transcriptome