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- Title
黏细菌 Myxococcus sp. BS 对烟稻轮作土壤真菌 多样性和群落组装过程的调控.
- Authors
于潇玮; 王创; 王可; 李欣艳; 董雷; 崔中利; 曹慧
- Abstract
[Objectives] This study investigated the regulation of soil fungal diversity and community assembly processes by Myxococcus sp. BS in tobacco-rice rotation fields, and provided theoretical guidance for biological control through the application of Myxococcus sp. BS with organic fertilizer in the tobacco-rice rotation fields. [Methods] This experiment consisted of three treatments: no treatment (CK), application of Myxococcus sp. BS (BS) and application of Myxococcus sp. BS and organic fertiliser (BF). The community diversity, composition and assembly processes of soil fungi were analysed through high-throughput sequencing technology. [Results] After the addition of Myxococcus sp. BS, Chaol index decreased while Shannon index increased. The similarity of fungal communities between BS and BF treatment was high, while the similarity between CK and Myxococcus sp. BS treated soil was low. At the phylum level, the relative abundances of Mortierellomycota, Chytridiomycota and Glomeromycota decreased after the addition of Myxococcus sp. BS. At the genus level, the relative abundance of Ustilaginoidea and Cladosporium increased while the relative abundance of Alternaria, Humicola and Mortierella gradually decreased. Significant differences in fungal abundance between treatments were obtained by LEfSe analysis (i.e., biomarker), with seven genera having significantly changed in CK, five in BS, and eight in BF. In all three treatments, the processes of fungal community assembly were dominated by stochastic processes, of which dispersal limitation contributed the most, and the contribution of stochastic process increased with the addition of Myxococcus sp. BS. [Conclusions] The addition of Myxococcus sp. BS to tobacco-rice rotation fields changed the soil fungal diversity, community composition and assembly process, resulting in a significant reduction in the relative abundance of Alternaria, which caused diseases of tobacco and rice; and the effect of applying Myxococcus sp. BS with organic fertilizer was better than that of applying Myxococcus sp. BS agent alone.
- Subjects
FUNGAL communities; MYXOBACTERALES; TOBACCO
- Publication
Journal of Nanjing Agricultural University / Nanjuing Nongye Daxue Xuebao, 2023, Vol 46, Issue 5, p882
- ISSN
1000-2030
- Publication type
Article
- DOI
10.7685/jnau.202209006