Effects Of Rotation Of Indian Mustard On Cucumber Seedling Rhizosphere Fungal Community Composition
INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY(2020)
Abstract
It is well established now that cropping system has great influence on soil microbial communities, but still advance techniques are required to study more of changes in soil microbiota during cropping systems. Here we used high-throughput sequencing to explore the effects of crop rotation with Indian mustard on composition of cucumber rhizosphere fungal community in pot experiment. In our results, an average of 35,748 quality sequences were obtained and these were classified into more than 450 Operational taxonomic units (OTUs) at 97% sequence similarity. The rotation with Indian mustard changed the rhizosphere fungal community composition of cucumber seedlings, but had no effect on fungal community alpha diversity. Rotation with Indian mustard was dominated by Ascomycota phyla, Leotiomycetes and Ascomycota Ineertae sedis classes, orders of Sordariales, Eurotiales, Agaricomycetes Incertae sedis and unclassified Sordariomycetes. In the rotation of Indian mustard, the relative abundance of Humicola, Remersonia, Myrothecium, Scedosporium and Mycothermus spp. was higher, but the relative abundance of Pseudallescheria, Mortierella, Chaetomium, Ilyonecfria, Gibellulopsis and Metacordyceps spp. was lower. Overall, this study has provided great insights of changes in fungal community during crop rotation system. (C) 2020 Friends Science Publishers
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Key words
Crop rotation, Cucumber, Fungal community, Indian mustard, Rhizosphere
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