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Response of microbial communities to pesticide residues in soil restored with Azolla imbricata

Author:
Lu, Xiao-Ming, Lu, Peng-Zhen
Source:
Applied microbiology and biotechnology 2018 v.102 no.1 pp. 475-484
ISSN:
0175-7598
Subject:
Acaryochloris, Anaerovorax, Azolla, Azovibrio, Cytophaga, Desulfitobacterium, Desulfobulbus, Desulfovibrio, Erysipelothrix, Geothrix, Haliscomenobacter, Halomonas, Hirschia, Leptospira, Megasphaera, Nitrosomonas, Nostoc, Oscillochloris, Propionivibrio, Pseudobutyrivibrio, Ralstonia, Runella, Sphingobacterium, Sphingomonas, Thauera, Thiobacillus, Vogesella, Zoogloea, community structure, correlation, high-throughput nucleotide sequencing, microbial communities, pesticide residues, pesticides, soil
Abstract:
Under conditions of Azolla imbricata restoration, the high-throughput sequencing technology was employed to determine change trends of microbial community structures in the soil that had undergone long-term application of pesticides. The relationship between the content of pesticide residues in the soil and the microbial community structure was analyzed. The results indicated that the microbial diversity was strongly negatively correlated with the contents of pesticide residues in the soil. At a suitable dosage of 5 kg fresh A. imbricata per square meter of soil area, the soil microbial diversity increased by 12.0%, and the contents of pesticide residues decreased by 26.8−72.1%. Sphingobacterium, Sphingopyxis, Thermincola, Sphingobium, Acaryochloris, Megasphaera, Ralstonia, Pseudobutyrivibrio, Desulfitobacterium, Nostoc, Oscillochloris, and Aciditerrimonas may play major roles in the degradation of pesticide residues. Thauera, Levilinea, Geothrix, Thiobacillus, Thioalkalispira, Desulfobulbus, Polycyclovorans, Fluviicola, Deferrisoma, Erysipelothrix, Desulfovibrio, Cytophaga, Vogesella, Zoogloea, Azovibrio, Halomonas, Paludibacter, Crocinitomix, Haliscomenobacter, Hirschia, Silanimonas, Alkalibacter, Woodsholea, Peredibacter, Leptolinea, Chitinivorax, Candidatus_Lumbricincola, Anaerovorax, Propionivibrio, Parasegetibacter, Byssovorax, Runella, Leptospira, and Nitrosomonas may be indicators to evaluate the contents of pesticide residues.
Agid:
5886990