IFunneliformis mosseae/I Inoculation Enhances ICucurbita pepo/I L. Plant Growth and Fruit Yield by Reshaping Rhizosphere Microbial Community Structure

Arbuscular mycorrhizal fungi (AMF) are essential components of the soil microbiome that can facilitate plant growth and enhance abiotic and biotic stress resistance. However, the mechanisms via which AMF inoculation influences Cucurbita pepo L. plant growth and fruit yield remain unclear. Here, we c...

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Bibliographic Details
Published in:Diversity (Basel) 2022-10, Vol.14 (11)
Main Authors: Wang, Junsong, Fu, Wenjiang, Sun, Chenyu, Cai, Shuai, Tang, Cheng
Format: Article
Language:English
Subjects:
Agricultural research
Crop yields
Environmental aspects
Fungi
Growth
Growth (Plants)
Physiological aspects
Rhizosphere
Squashes
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Summary:Arbuscular mycorrhizal fungi (AMF) are essential components of the soil microbiome that can facilitate plant growth and enhance abiotic and biotic stress resistance. However, the mechanisms via which AMF inoculation influences Cucurbita pepo L. plant growth and fruit yield remain unclear. Here, we conducted pot experiments to investigate bacterial and fungal community structure in the rhizosphere of C. pepo plants inoculated with Funneliformis mosseae (Nicoll. & Gerd.) Gerd. & Trappe based on 16S ribosomal RNA and internal transcribed spacer gene sequencing. The α-diversity of bacteria increased significantly following F. mosseae inoculation, whereas the α-diversity of fungi exhibited an opposite trend (p < 0.01). The relative abundances of major bacterial phyla, Actinobacteria, Acidobacteria, and Chloroflexi, together with the fungal phylum Ascomycota, were all higher in inoculated samples than in uninoculated controls. F. mosseae inoculation led to remarkable enrichment of potentially beneficial taxa (e.g., Streptomyces, Sphingomonas, Lysobacter, and Trichoderma), in stark contrast to depletion of fungal pathogens (e.g., Botryotrichum, Acremonium, Fusarium, and Plectosphaerella). Pathways related to amino acid metabolism and antibiotic biosynthesis were upregulated by F. mosseae inoculation, whereas pathways involved in infectious diseases were downregulated. The results suggest that F. mosseae inoculation reshapes the rhizosphere microbiome, thereby augmenting C. pepo plant growth and fruit yield.
ISSN:1424-2818
1424-2818
DOI:10.3390/d14110932