Fosthiazate inhibits root-knot disease and alters rhizosphere microbiome of Cucumis melo var. saccharinus
文献类型: 外文期刊
作者: Wang, Huifang 1 ; Yan, Wanrong 1 ; Luo, Jiguang 1 ; Zeng, Xiangping 1 ; Zhao, Zhixiang 1 ; Dou, Xiaoli 2 ; Fu, Meiying 1 ;
作者机构: 1.Hainan Acad Agr Sci, Inst Plant Protect, Res Ctr Qual Safety & Stand Agro Prod, Key Lab Plant Dis & Pests Hainan Prov,Minist Agr &, Haikou, Peoples R China
2.Hainan Univ, Coll protect, Key Lab Green Prevent & Control Trop Plant Dis & P, Minist Educ, Haikou, Peoples R China
关键词: Cucumis melo var; saccharinus; fosthiazate; root-knot disease; Meloidogyne; bacterial diversity; metabolomic profiling
期刊名称:FRONTIERS IN MICROBIOLOGY ( 影响因子:5.2; 五年影响因子:6.2 )
ISSN:
年卷期: 2023 年 13 卷
页码:
收录情况: SCI
摘要: Root-knot nematodes especially Meloidogyne spp. are considered as most destructive obligate parasites that substantially reduce crop yield and quality. Fosthiazate is an efficient organothiophosphate chemical with nematicidal activity against Meloidogyne spp. The present study aimed to analyze the efficacy of fosthiazate against root-knot disease in Cucumis melo var. saccharinus and its potential effects on rhizosphere microbiome and metabolites. The fosthiazate (40%) was applied two times by spraying on the day of transplanting and during the pollination period (after 31 days). Samples from treatment (fosthiazate 40%: MF) and control groups (untreated plants; MCK) were analysed through metagenomic and metabolomic profiling of rhizospheres. Results revealed that root-knot index of the MF group (9.26 +/- 1.28) was significantly (p < 0.05) lower than the MCK group (22.06 +/- 0.71) with a control effect of 57.85% after 31 days of the first spray, whereas fosthiazate efficacy reduced to 31.87% after 38 days of second application with significantly (p < 0.05) different root-knot index values (MF: 56 +/- 1.43 and; MCK: 82.26 +/- 3.87). However, Cucumis melo var. saccharinus fruit yield in both groups (MCK: 21.1 +/- 0.9 and MF: 21.53 +/- 0.85) showed no differences (p > 0.05). Metagenomic profiling revealed Proteobacteria, Acidobacteriota, and Firmicutes as predominant phyla and Bacillus, Sphingomonas, and Acidibacter as predominant genera in rhizosphere soil samples of both MF and MCK groups. Further, a t-test revealed higher differential enrichment of Firmicutes at phylum level and Bacillus at genus level in MF than MCK. Metabolomic profiling of rhizospheric soil revealed a total of six differential metabolites (p < 0.05), four of them (Sucrose, Hexaonic acid 1, (Z)-9-Octadecenamide 1, and Hexadecanamide) were up-regulated in MF group, whereas two of them (2,3,4-Trihydroxy-3-(Hydroxymethyl) Butanol and Sulfurous acid, 2, ethylhexylundecyl ester) were down-regulated in CK group. Our study concluded that fosthiazate exhibits a better control over the rook-knot disease in the short term and resulted in trackable changes in rhizosphere microbiome and metabolome.
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