天然产物研究与开发 ›› 2024, Vol. 36 ›› Issue (5): 805-814.doi: 10.16333/j.1001-6880.2024.5.010

• 研究简报 • 上一篇    下一篇

羌活种子不同休眠状态内生菌群落结构组成和差异性分析

马瑞丽1,2,胥生荣1,2*,张金晶1   

  1. 1青海大学医学部;2青海省糖脂代谢疾病防控中医药重点实验室,西宁 810008
  • 出版日期:2024-05-28 发布日期:2024-05-29
  • 基金资助:
    青海大学医学部中青年科研基金(2020-kyy-6);青海省科技厅青年基金(2024-ZJ-951)

Community composition and differential analysis of endophytic in different dormancy states of Notopterygium incisum Ting ex H.T.Chang seeds

MA Rui-li1,2,XU Sheng-rong1,2*,ZHANG Jin-jing1   

  1. 1Medical College,Qinghai University;2Qinghai Provincial Key Laboratory of Traditional Chinese Medicine Research for Glucolipid Metabolic Diseases,Xining 810008,China
  • Online:2024-05-28 Published:2024-05-29

摘要:

为了探寻羌活种子不同休眠阶段内生菌的群落结构组成和差异性,利用Illumina Miseq平台分别对羌活种子不同休眠状态(形态生理双重休眠状态(GSA)、形态休眠解除状态(GSB)、生理休眠解除状态(GSC))细菌微生物16S V5+V7区域和真菌微生物ITS1-IF区域的扩增片段进行高通量测序,结合生物信息学进行分析。内生细菌的多样性较内生真菌丰富。内生菌群落种类在门水平上类似;在属水平上,从GSA到GSB阶段,内生菌群落组成发生变化,从GSB到GSC阶段,内生菌群落种类相似。通过Alpha多样性分析发现,从GSA到GSB再到GSC阶段,内生细菌群落多样性显著增大后直到种子生理休眠解除变化不变,而内生真菌群落多样性在种子整个休眠解除过程中变化不大。内生细菌群落结构从GSA到GSB再到GSC阶段均发生了显著性变化,而内生真菌群落结构从GSA到GSB发生显著变化后直到种子生理休眠解除,群落结构变化不大。LEfSe分析发现内生细菌共有37个差异丰富的分类学分支(a=0.01,LDA≥2.0),内生真菌则无。本研究明确了羌活种子不同休眠状态内生菌群落结构组成和差异性,丰富了羌活种子内生菌资源信息,对进一步研究利用微生物方法促进羌活种子休眠解除技术具有一定的指导意义。

关键词: 羌活, 种子休眠, 内生菌, 群落结构

Abstract:

To seek the community composition and differential of endophytic bacteria and fungi in different dormancy states of Notopterygium incisum Ting ex H.T.Chang.seeds,the amplified fragments of 16S V5+V7 region and ITS1-IF region in N. incisum seeds from different dormancy states [morphological and physiological dormancy state (GSA),morphological dormancy release state (GSB),physiological dormancy release state (GSC)] were sequenced by Illumina Miseq high-throughput sequencing technique,associating with bioinformatics assay to analyze.The results showed that the diversity of endophytic bacteria was higher than the fungi.The types of endophyte community composition were similar at the phylum level,but abundance exhibited significant difference in different dormancy states.The types of endophyte community composition were changed from GSA to GSB at the genus level,were similar from GSB to GSC and abundance exhibited significant difference.The community diversity of endophytic bacteria increased significantly from GSA to GSB,and then no significant difference to GSC by Alpha diversity analysis,the community diversity of endophytic fungi have no significant difference during the entire dormancy release process.The community structure of endophytic bacteria exhibited significant difference among GSA,GSB and GSC,the community structure of endophytic fungi changed significantly from GSA to GSB,and then no significant difference to GSC.LEfSe analysis showed that there are 37 differential taxonomic branches of endophytic bacteria (a=0.01,LDA≥2.0),but none for endophytic fungi.This study identified the community composition and differential of endophytic in different dormancy stages of N. incisum seeds,and enrichd the resources of endophytic bacterial and fungi,have instructional significance for further study using microbial methods to promote dormancy release of N. incisum seeds.

Key words: Notopterygium incisum Ting ex H.T.Chang, seed dormancy, endophytic, community structure

中图分类号:  R932