Acta Agrestia Sinica ›› 2023, Vol. 31 ›› Issue (6): 1673-1681.DOI: 10.11733/j.issn.1007-0435.2023.06.009

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Full-length Transcriptome Sequencing and Bioinformatic Analysis of Psammochloa villosa (Poaceae)

MAO Xuan-rui1, SU Xu1,2,3, LIU Yu-ping1,2,4, LIU Tao1, CHEN Jin-yuan1,3, HU Xia-yu1, YANG Ping1, LI Xiao-li1, YUAN Yuan1   

  1. 1. School of Life Sciences, Qinghai Normal University, Xining, Qinghai Province 810008, China;
    2. Academy of Plateau Science and Sustainability, Qinghai Normal University, Xining, Qinghai Province 810016, China;
    3. Key Laboratory of Biodiversity Formation Mechanism and Comprehensive Utilization of the Qinghai-Tibet Plateau in Qinghai Province, Qinghai Normal University, Xining, Qinghai Province 810008, China;
    4. Key Laboratory of Medicinal Animal and Plant Resources of the Qinghai-Tibet Plateau in Qinghai Province, Qinghai Normal University, Xining, Qinghai Province 810008, China
  • Received:2022-12-19 Revised:2023-02-10 Online:2023-06-15 Published:2023-06-30

沙鞭全长转录组测序及生物信息学分析

毛轩睿1, 苏旭1,2,3, 刘玉萍1,2,4, 刘涛1, 陈金元1,3, 胡夏宇1, 杨萍1, 李小莉1, 袁园1   

  1. 1. 青海师范大学生命科学学院, 青海 西宁 810008;
    2. 青海师范大学高原科学与可持续发展研究院, 青海 西宁 810016;
    3. 青海师范大学青海省青藏高原生物多样性形成机制与综合利用重点实验室, 青海 西宁 810008;
    4. 青海师范大学青海省 青藏高原药用动植物资源重点实验室, 青海 西宁 810008
  • 通讯作者: 刘玉萍,E-mail:lyp8527970@126.com
  • 作者简介:毛轩睿(1997-),男,汉族,湖南长沙人,硕士研究生,主要从事高山植物遗传多样性和系统进化研究,E-mail:maoxaunrui@163.com
  • 基金资助:
    青海省自然科学基金面上项目(2022-ZJ-918);国家自然科学基金项目(32160297);2023年大学生创新创业训练计划项目(qhnucxcy2023052)资助

Abstract: In order to explore the transcriptome characteristics of Psammochloa villosa (Poaceae),the full-length transcriptome was firstly sequenced,then the genomic library of P. villosa were established by using the PacBio Sequel platform in this study. The result showed that 323 309 clean reads were obtained from that transcriptome sequence,which could form 673 540 circular consensus reads (CCS) through self-correction and a total of 28 447 coding sequences (CDS) in prediction. Moreover,93 563 SSRs in the transcriptome of P. villosa were searched and found out by MISA software,which were distributed in 56 824 unigenes. The transcripts of P.villosa was matched to the counterparts in NR database for the gene function,and it was identified out that 166 541 unigenes of P. villosa were annotated and that P. villosa had the closest genetic relationship with Brachypodium distachyon. Based on KOG database,97 892 unigenes within the transcriptome of P. villosa were classified into 25 functional groups,most of which were annotated in the participation of the posttranslational modification,protein turnover and chaperones. Similarly,87 930 unigenes within that transcriptome were annotated to GO database,whose functions were divided into 62 subclades of three clades of the biological processes,cellular components,and molecular functions. Besides,the functional analysis of unigenes referred to the KEGG database indicated that the functions of annotated genes in that transcriptome were related with carbohydrate metabolism,signal transduction and energy metabolism. These results above enriched the genetic information of P. villosa,and could provide a theoretical basis for excavating the key drought-resistant genes of P. villosa in coming days.

Key words: Poaceae, Psammochloa villosa, Full-length transcriptome, Function annotation, SSR

摘要: 为了明晰沙鞭(Psammochloa villosa)的转录组特征,本研究利用PacBio Sequel测序平台首次对其进行全长转录组测序和数据分析,结果共获得323 309个clean reads,自我矫正产生环形一致性序列(CCS)673 540个,预测得到蛋白编码区(CDS)序列28 447个;MISA软件共搜索得到沙鞭93 563个简单重复序列(SSR),分布于56 824条unigene上;转录本基因功能注释,共有166 541条序列得到NR注释,结果显示沙鞭与二穗短柄草(Brachypodium distachyon)亲缘最近;KOG数据库比对将97 892个unigene分为25个功能类别,其中注释较多的功能为翻译后修饰、蛋白质周转和分子伴侣;GO数据库比对共注释到87 930个unigene,分为生物过程、细胞组成和分子功能3大类及62个亚类分支;KEGG结果表明碳水化合物代谢、信号转导、能量代谢通路中注释基因较多。本研究结果丰富了沙鞭的遗传信息,为今后沙鞭关键耐旱基因的挖掘提供了理论依据。

关键词: 禾本科, 沙鞭, 全长转录组, 功能注释, SSR

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