Yu Wang, Fei Xu, Lan-Ping Zhu, Tuo Zhang, Si-Yao Liu, Lei Jian, Shu-Cong Lü
{"title":"[Structure and Function of Fungal Community in Channel Sediments of Different Sections of Jialing River].","authors":"Yu Wang, Fei Xu, Lan-Ping Zhu, Tuo Zhang, Si-Yao Liu, Lei Jian, Shu-Cong Lü","doi":"10.13227/j.hjkx.202307209","DOIUrl":null,"url":null,"abstract":"<p><p>This study aimed to explore the effects of different disturbances on the fungal communities in the sediments of the Jialing River in order to provide scientific basis for the protection of the river ecosystem. The fungal community in the sediments of the main stream of the Jialing River was taken as the research object, and high-throughput sequencing and bioinformatics techniques were used to analyze the differences in the composition and function of fungal communities in river sediment of different types of disturbance (project disturbance, tributary disturbance, sand mining disturbance, and reclamation disturbance) and non-disturbance sections. The results showed that: ① The reclamation and project disturbances significantly inhibited the diversity and richness of fungal communities (<i>P</i><0.05). The tributary disturbance increased the richness of fungal communities, whereas the impact of sand mining disturbance on sediment fungal communities was not significant. ② The diversity and composition of fungal communities tended to be similar at the different sampling sites in the section with low input of exogenous substances (non-disturbance and sand mining disturbance), whereas there were obvious differences in the diversity of fungal communities at the different sampling sites of high input of external substances (tributary disturbance, project disturbance, and reclamation disturbance) sections. ③ Ascomycota, Rozellomycota, and Basidiomycota were the main dominant fungal phyla in the sediments of the Jialing River. The relative abundance of Rozellomycota was the highest in the sand mining interference section, and the relative abundance of Basidiomycota was the highest in the tributary interference section. Project disturbance significantly increased the relative abundance of saprotrophs, animal pathogens, plant pathogens, and dung saprotrophs, whereas other disturbances inhibited the relative abundance of fungal parasitic fungi, plant pathogens, and plant saprophytes. In conclusion, human disturbance has caused changes in fungal diversity, community structure, and function in the sediment of the Jialing River, and xenobiotic input was a key factor contributing to this phenomenon. The results can provide a reference for predicting and evaluating the ecological quality of river sediments.</p>","PeriodicalId":35937,"journal":{"name":"Huanjing Kexue/Environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Huanjing Kexue/Environmental Science","FirstCategoryId":"1087","ListUrlMain":"https://doi.org/10.13227/j.hjkx.202307209","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Environmental Science","Score":null,"Total":0}
引用次数: 0
Abstract
This study aimed to explore the effects of different disturbances on the fungal communities in the sediments of the Jialing River in order to provide scientific basis for the protection of the river ecosystem. The fungal community in the sediments of the main stream of the Jialing River was taken as the research object, and high-throughput sequencing and bioinformatics techniques were used to analyze the differences in the composition and function of fungal communities in river sediment of different types of disturbance (project disturbance, tributary disturbance, sand mining disturbance, and reclamation disturbance) and non-disturbance sections. The results showed that: ① The reclamation and project disturbances significantly inhibited the diversity and richness of fungal communities (P<0.05). The tributary disturbance increased the richness of fungal communities, whereas the impact of sand mining disturbance on sediment fungal communities was not significant. ② The diversity and composition of fungal communities tended to be similar at the different sampling sites in the section with low input of exogenous substances (non-disturbance and sand mining disturbance), whereas there were obvious differences in the diversity of fungal communities at the different sampling sites of high input of external substances (tributary disturbance, project disturbance, and reclamation disturbance) sections. ③ Ascomycota, Rozellomycota, and Basidiomycota were the main dominant fungal phyla in the sediments of the Jialing River. The relative abundance of Rozellomycota was the highest in the sand mining interference section, and the relative abundance of Basidiomycota was the highest in the tributary interference section. Project disturbance significantly increased the relative abundance of saprotrophs, animal pathogens, plant pathogens, and dung saprotrophs, whereas other disturbances inhibited the relative abundance of fungal parasitic fungi, plant pathogens, and plant saprophytes. In conclusion, human disturbance has caused changes in fungal diversity, community structure, and function in the sediment of the Jialing River, and xenobiotic input was a key factor contributing to this phenomenon. The results can provide a reference for predicting and evaluating the ecological quality of river sediments.
本研究旨在探讨不同干扰对嘉陵江沉积物中真菌群落的影响,为保护嘉陵江生态系统提供科学依据。本研究以嘉陵江干流沉积物中的真菌群落为研究对象,采用高通量测序和生物信息学技术,分析了不同干扰类型(工程干扰、支流干扰、采砂干扰、填海干扰)和非干扰河段沉积物中真菌群落组成和功能的差异。和非扰动区段。结果表明: ① 填海和工程扰动显著抑制了真菌群落的多样性和丰富度(P