Journal of Agricultural Science and Technology ›› 2022, Vol. 24 ›› Issue (5): 209-217.DOI: 10.13304/j.nykjdb.2021.0015

• BIO-MANUFACTURING & RESOURCE AND ECOLOGY • Previous Articles    

Analysis of Bacterial Diversity in the Rhizosphere Soil of Salsolapasserina and Its Correlation with the Soil Physical and Chemical Properties

Yanchen WEI1(), Jixiang CHEN1(), Yonggang WANG2, Tongtong MENG3, Yalong HAN1, Mei LI1   

  1. 1.School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, China
    2.School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
    3.College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China
  • Received:2021-01-07 Accepted:2021-06-01 Online:2022-05-15 Published:2022-06-06
  • Contact: Jixiang CHEN

荒漠植物珍珠猪毛菜根际土壤细菌多样性与土壤理化性质相关性分析

魏艳晨1(), 陈吉祥1(), 王永刚2, 孟彤彤3, 韩亚龙1, 李美1   

  1. 1.兰州理工大学石油化工学院, 兰州 730050
    2.兰州理工大学生命科学与工程学院, 兰州 730050
    3.兰州理工大学能源与动力工程学院, 兰州 730050
  • 通讯作者: 陈吉祥
  • 作者简介:魏艳晨 E-mail:2542893966@qq.com
  • 基金资助:
    国家自然科学基金项目(31272694)

Abstract:

In order to understand the ecological adaptation mechanism of Salsolapasserina, high-throughput sequencing of bacterial 16S rDNA, pure culture and fluorescence staining laser confocal microscope counting methods were used to study the bacterial groups in the rhizosphere soil of Salsolapasserina and their correlation with soil physical and chemical properties in Jingtai desert steppe of Gansu Province. The results showed that the number of OUTs in the rhizosphere soil was 5 655, while that of non-rhizosphere soil was 4 665, and the bacterial diversity of the rhizosphere soil was significantly higher than that of the non-rhizosphere soil. The numbers of cultivable bacteria and the total bacteria in rhizosphere soil were 1.62×106 CFU·g-1 and 1.33×107·g-1respectively, which were higher than those in non-rhizosphere soil (5.40×105 CFU·g-1 and 1.12×107·g-1). The dominant phyla included Actinobacteria, Planctomycetes, Proteobacteria, Gemmatimonadetes, Acidobacteria, Chloroflexi, Bacteroidetes, Firmicutes and Verrucomicrobia, which accounted for 97.7% of the total number of bacteria. The dominant genera were Rubrobacter, RB41NocardioidesStreptomycePir4_lineageBacillusSolirubrobacterGemmatimonas and Pirellula. The correlation analysis of the main flora and soil factors showed that the soil physical and chemical properties were the key determinants affecting the composition of soil bacterial community.

Key words: desert steppe, Salsolapasserina, bacterial community diversity, high-throughput sequencing, physical and chemical properties of soil

摘要:

为了解珍珠猪毛菜(Salsolapasserina)的生态适应机制,采用细菌16S rDNA高通量测序、纯培养方法及荧光染色激光共聚焦显微镜计数法研究了甘肃景泰地区荒漠草原珍珠猪毛菜根际土壤的细菌类群及其与土壤理化性质相关性,并与荒漠土壤进行对比。结果表明,珍珠猪毛菜根际土壤的养分含量显著高于荒漠土壤。猪毛菜根际土壤微生物检测到5 655 OUT,其中特有的为2 580个。根际土壤可培养细菌数和细菌总数分别为1.62×106 CFU·g-1和1.33×107个·g-1,高于非根际土壤(5.40 ×105 CFU·g-1和1.12×107 个·g-1);且2种土壤细菌的多样性存在显著差异。珍珠猪毛菜根际土壤中优势细菌门为放线菌门(Actinobacteria)、浮霉菌门(Planctomycetes)、变形菌门(Proteobacteria)、芽单胞菌门(Gemmatimonadetes)、酸杆菌门(Acidobacteria)、绿弯菌门(Chloroflexi)、拟杆菌门(Bacteroidetes)、厚壁菌门(Firmicutes)和疣微菌门(Verrucomicrobia),占总细菌类群的97.7%;优势细菌属依次为红色杆菌属(Rubrobacter)、RB41、类诺卡氏菌属(Nocardioides)、链霉菌属(Streptomyces)、Pir4_lineage、芽孢杆菌属(Bacillus)、土壤红杆菌属(Solirubrobacter)、芽单胞菌属(Gemmatimonas)和小梨形菌属(Pirellula)。主要菌群及环境因子的相关分析表明,土壤养分含量、pH和含水率是影响土壤细菌群落组成的重要因子。

关键词: 荒漠草原, 珍珠猪毛菜, 细菌多样性, 高通量测序, 土壤理化性质

CLC Number: