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Biodiversity and composition of rhizosphere fungi community associated with five plant species*(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

2020 01
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Biodiversity and composition of rhizosphere fungi community associated with five plant species*
YAN Hong mei1 2 ZHANG Xin yu1 TAN Wen jun1 & CHEN Wei min1 2**
1 Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, Yangling 712100, China
2 College of Life Sciences , Northwest A&F University, Yangling 7 12100, China
rhizosphere fungal community diversity function

Plant rhizosphere fungi plays an important role in the plant growth promoting and health protection . However, due to the limitation of cultural technique, the difference of plant species on biodiversity and composition of rhizosphere fungal communities remains unknown. To reveal the fungal communities and functions from more plant species, we analysed the structure and composition of rhizosphere fungal communities from five plant species using Illumina sequencing of the internal transcribed spacer 2 (ITS2) region, and estimated the functions by FUNGuild. Our results showed that the most abundant fungal sequences assigned to Ascomycetes at the level of phylum, and assigned to Dothideomycetes and Sordariomycetes at the level of class . Eighty percent of the fungal sequences belonged to the 17–45 most dominant OTUs for each plant species. The Shannon diversity index and the richness (Chao1) showed the order was pawpaw > irirs > grape > soybean > maize. Principal component analysis of the relative abundances of fungal OTUs showed that samples of the same plant species typically clustered together, and fungal communities were similar among soybean, irirs and grape. Additional ly, functional assignments were made in FUNGuild, the results showed that 49.76% of total OTUs (1290 OTUs) belonged to eight trophic modes, of which saprotroph was the main group accounting for 25.89% of the total OT Us, followed by pathogens/saprophytic/symbiotic combined, plant pathogens, etc. Therefore, this study revealed that rhizosphere fungal diversity of crops is lower than perennial plants, which also showed that the rhizosphere fungal community and its potential ecological function could be affected by plant species or the different life cycle.




Last Update: 2019-07-05