Colonization and community structure of arbuscular mycorrhizal fungi in urbanising landscapes of China

Li-Jun Shi, Jian-Xin Yu, Yinglong Chen, Shao-Xia Guo, Run-Jin Liu

Research output: Contribution to journalArticle

Abstract

Samples of root zone soil and roots of Festuca elata grown in university campuses, Euonymus japonicus in urban parks, and Forsythia suspensa in suburb parks in Beijing, Qingdao, Jinan, Nanjing, Wuhan, and Guiyang of China were collected to determine AM fungus colonization and community structure. Typical arbuscules and vesicles were observed, and most of the arbuscules were Arum-type, while no arbuscule was observed on roots of F. elata in the campus of Renmin University of China in Beijing and on E. japonicus in Xiamafang Park, Nanjing. Total mycorrhizal colonization, arbuscule colonization, and number of vesicles per mm length of root was generally under 40%, 5% and 1, respectively, regardless of sampling sites. Total mycorrhizal colonization of F. elata in the campus of Renmin University of China was significantly lower than that in campuses of other cities. The spore density, species richness and Shannon index of AM fungi on the three plants in Qingdao were higher than those in the other cities, except for species richness on F. suspensa,
and spore density on E. japonicus in Beijing, and species richness and Shannon index on F. elata in Jinan. There were few of common AM fungal species in different grass lawns, while frequency of Glomus radiatum was 100% in all the grass lawn sampled, which was also the dominant species. Compared with the other urban parks, Qingdao Zhongshan Park showed the highest spore density and species richness of AM fungi on E.
japonicus. Among of suburb parks, Qianling Mountain at Guiyang had the highest spore density, species richness and Shannon index of AM fungi on F. suspensa; while Shizi Hill in Wuhan showed the lowest of species richness and Shannon index. There was a negative correlation between N deposition and vesicle
density, while a positive correlation between soil compaction and the vesicle density. The present investigation showed that species richness of AM fungi was significantly positively correlated with the organic matter content in the root zone soil of E. japonicus, while Shannon index was significantly positively correlated with
soil pH value. It is suggested that community structure of AM fungi in urban lands in China be quite different, and the nitrogen deposition and soil compaction degree have different effects on the number of vesicles in roots.
Original languageEnglish
Pages (from-to)2016-2029
JournalMycosystema
Volume38
Issue number11
DOIs
Publication statusPublished - 22 Nov 2019

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