文献类型：期刊文献

英文题名：Structural characteristics and diversity of the rhizosphere bacterial communities of wild Fritillaria przewalskii Maxim. in the northeastern Tibetan Plateau

作者：Cui, Zhijia[1,2];Li, Ran[1];Li, Fan[1];Jin, Ling[1,2];Wu, Haixu[1];Cheng, Chunya[1];Ma, Yi[1,2];Wang, Zhenheng[1,2];Wang, Yuanyuan[1]

第一作者：Cui, Zhijia;崔治家

通信作者：Cui, ZJ[1];Jin, L[1];Cui, ZJ[2];Jin, L[2]

机构：[1]Gansu Univ Chinese Med, Coll Pharm, Lanzhou, Gansu, Peoples R China;[2]Northwest Collaborat Innovat Ctr Tradit Chinese Me, Lanzhou, Gansu, Peoples R China

第一机构：甘肃中医药大学药学院（西北中藏药协同创新中心办公室）

通信机构：[1]corresponding author), Gansu Univ Chinese Med, Coll Pharm, Lanzhou, Gansu, Peoples R China;[2]corresponding author), Northwest Collaborat Innovat Ctr Tradit Chinese Me, Lanzhou, Gansu, Peoples R China.|[1073501e14fb35863569f]甘肃中医药大学药学院（西北中藏药协同创新中心办公室）;[10735]甘肃中医药大学;

年份：2023

卷号：14

外文期刊名：FRONTIERS IN MICROBIOLOGY

收录：;Scopus(收录号：2-s2.0-85149655274);WOS:【SCI-EXPANDED(收录号:WOS:000942627200001)】；

基金：This work was funded by the "Double First-Class" research key project of Gansu (GSSYLXM-05), ecological planting and quality assurance project of genuine medicinal materials (2020-No. 153), and Gansu province higher education innovation fund project (2021A-083).

语种：英文

外文关键词：Fritillaria przewalskii Maxim; natural population; rhizosphere soil; bacterial community; characteristics and diversity; northeastern Tibetan Plateau

摘要：IntroductionFritillaria przewalskii Maxim. is a Chinese endemic species with high medicinal value distributed in the northeastern part of the Tibetan Plateau. F. przewalskii root-associated rhizosphere bacterial communities shaped by soil properties may maintain the stability of soil structure and regulate F. przewalskii growth, but the rhizosphere bacterial community structure of wild F. przewalskii from natural populations is not clear. MethodsIn the current study, soil samples from 12 sites within the natural range of wild F. przewalskii were collected to investigate the compositions of bacterial communities via high-throughput sequencing of 16S rRNA genes and multivariate statistical analysis combined with soil properties and plant phenotypic characteristics. ResultsBacterial communities varied between rhizosphere and bulk soil, and also between sites. Co-occurrence networks were more complex in rhizosphere soil (1,169 edges) than in bulk soil (676 edges). There were differences in bacterial communities between regions, including diversity and composition. Proteobacteria (26.47-37.61%), Bacteroidetes (10.53-25.22%), and Acidobacteria (10.45-23.54%) were the dominant bacteria, and all are associated with nutrient cycling. In multivariate statistical analysis, both soil properties and plant phenotypic characteristics were significantly associated with the bacterial community (p < 0.05). Soil physicochemical properties accounted for most community differences, and pH was a key factor (p < 0.01). Interestingly, when the rhizosphere soil environment remained alkaline, the C and N contents were lowest, as was the biomass of the medicinal part bulb. This might relate to the specific distribution of genera, such as Pseudonocardia, Ohtaekwangia, Flavobacterium (relative abundance >0.01), which all have significantly correlated with the biomass of F. przewalskii (p < 0.05). DiscussionF. przewalskii is evidently averse to alkaline soil with high potassium contents, but this requires future verification. The results of the present study may provide theoretical guidance and new insights for the cultivation and domestication of F. przewalskii.