Different techniques reveal the difference of community structure and function of fungi from root and rhizosphere of Salvia miltiorrhiza Bunge

Author:

Li C.1,Wu Y.1,Li L.1,Zhao C.1,Li B.1,Wu Y.1,Wang H.1,Yan Z.1ORCID

Affiliation:

1. State Key Laboratory of Characteristic Chinese Medicinal Resources in Southwest China School of Pharmacy, Chengdu University of Traditional Chinese Medicine Chengdu China

Abstract

Abstract Fungi have essential functions in plant health and performance. However, the plant‐associated functions of many cultured fungi have not been established in detail. Here, the fungal species diversity in Salvia miltiorrhiza roots and rhizosphere was assessed for the first time using culturomics and high‐throughput sequencing. We present a comprehensive functional metagenomic analysis of these fungi and verified activity of cellulase and chitinase predicted in the metagenomic analysis. We first collected and cultured fungi from the root and rhizosphere of S. miltiorrhiza. We found 92 species across 37 families and five phyla, with Ascomycota being dominant. Many rDNA internal transcribed spacer sequences could not be assigned to lower taxonomic levels. There were 19 genera of endophytic fungi and 37 genera of rhizosphere fungi. The culturomics approach had lower taxonomic diversity than high‐throughput sequencing, but some fungi were only found in cultures. Structural analyses indicated that the dominant species differed in cultured and non‐cultured samples at other levels, apart from the phylum level. Functional analysis mapped 223 carbohydrate enzyme families and 393 pathways in the CAZy and KEGG databases, respectively. The most abundant families were glycoside hydrolases and those involved in carbohydrate metabolism. As predicted by metagenomics, we experimentally verified cellulase and chitinase activity for 29 and 74 fungi, respectively. We provide the first evidence of biomass recycling by fungi that are associated with plants. Culturing is essential to reveal the hidden microbial community and critical functions in plant–microbe interactions.

Funder

National Natural Science Foundation of China

Publisher

Wiley

Subject

Plant Science,Ecology, Evolution, Behavior and Systematics,General Medicine

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