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岩黄连全长转录组测序及生物信息学分析

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为获得岩黄连全长转录组数据,本研究以6月龄岩黄连实生苗为材料,利用PacBio平台和SMRT技术进行全长转录组测序,共获得14 183个去冗余的高质量转录本,通过NT、NR、BLASTX、BLASTP、eggNOG和GO等数据库比对,100%转录本被成功注释.NR注释结果表明,岩黄连转录本与博落回(Macleaya cordata(Willd.)R.Br.)、水青树(Tetracentron sinense Oliv.)、克尔纳罂粟(Papaver californicum A.Gray)等植物具有较高的同源性,GO、KOG 和KEGG注释发现,这些转录本主要涉及生物学和代谢过程.转录本结构分析结果表明,176个发生了可变剪切事件(AS),其中内含子滞留类型(RI)最多(56.82%);获得20 208个蛋白编码区(CDS),以小于1 000 bp序列为主(64.1%).检测到12 081个SSR位点,含有单碱基重复、二碱基重复、三碱基重复、四碱基重复、五碱基重复、六碱基重复等6个类型,其中三碱基重复类型占比最高(41.49%).此外,预测得到194个LncRNA和5 590个TFs序列,并且这些转录因子属于bHLH、MYB-related、NAC等家族.进一步分析发现,参与生物碱类、黄酮类、甾体类、三萜类、核苷类生物合成的基因分别为30个、22个、70个、6个、66个.岩黄连全长转录组数据的获得与分析,不仅丰富该种的遗传信息,也为其适应环境及药用成分合成途径相关研究提供了重要的理论依据.
Full-length Transcriptome Sequencing and Bioinformatics Analysis of Corydalis saxicola Bunting
In order to obtain full-length transcriptome data of Corydalis saxicola Bunting,full-length transcriptome sequencing was performed using PacBio platform and SMRT technology with 6-month-old seedlings as materials in this study.A total of 14 183 high-quality transcripts with no redundancy were obtained,which were analyzed by NT,NR,BLASTX,BLASTP,eggNOG and GO When com-pared with other databases,100%of the transcripts were successfully annotated.NR annotation results showed that the transcripts of Corydalis saxicola Bunting were associated with Macleaya cordata(Willd.)R.Br.,Tetracentron sinense Oliv.,Papaver californicum.The GO,KOG and KEGG annotations found that these transcripts were mainly involved in biological and metabolic processes.The structural analysis of the transcripts showed that 176 of them had variable shear events(AS),and the intron retention type(RI)was the most common(56.82%).A total of 20 208 CDS were obtained,and most of them were less than 1 000 bp(64.1%).A total of 12 081 SSR loci were detected,including 6 types of single base repeats,two base repeats,three base repeats,four base repeats,five base repeats and six base repeats,among which three base repeats accounted for the highest proportion(41.49%).In addition,194 lncRNAs and 5 590 TFs sequences were predicted,and these transcription factors belonged to the bHLH,MYB-related,NAC family.Further analysis showed that there were 30,22,70,6 and 66 genes involved in the biosynthesis of alkaloids,fla-vonoids,steroids,triterpenoids and nucleosides,respectively.The acquisition and analysis of the full-length transcriptome data of Corydalis saxicola Bunting not only enriched the genetic information of this species,but also provided an important theoretical basis for the study of its adaptation to the environment and the synthesis pathway of medicinal components.

Corydalis saxicola Buntingfull-length transcriptomefunctional annotation

陈华园、庞伟灿、李翠、刘世男

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广西大学林学院,广西高校亚热带人工林培育与利用重点实验室,南宁 530004

广西壮族自治区国有七坡林场,南宁 530032

广西壮族自治区药用植物园,广西药用资源保护与遗传改良重点实验室,南宁 530023

岩黄连 全长转录组 功能注释

2024

种子
贵州省种子管理站 贵州省种子学会 中国种子协会

种子

CSTPCD北大核心
影响因子:0.502
ISSN:1001-4705
年,卷(期):2024.43(12)