Perception of Biocontrol Potential of Bacillus inaquosorum KR2-7 against Tomato Fusarium Wilt through Merging Genome Mining with Chemical Analysis

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Author(s)

  • Maedeh Kamali
  • Dianjing Guo
  • Shahram Naeimi
  • Jafar Ahmadi

Detail(s)

Original languageEnglish
Article number137
Journal / PublicationBiology
Volume11
Issue number1
Online published14 Jan 2022
Publication statusPublished - Jan 2022

Link(s)

Abstract

Tomato Fusarium wilt, caused by Fusarium oxysporum f. sp. lycopersici (Fol), is a destructive disease that threatens the agricultural production of tomatoes. In the present study, the biocontrol potential of strain KR2-7 against Fol was investigated through integrated genome mining and chemical analysis. Strain KR2-7 was identified as B. inaquosorum based on phylogenetic analysis. Through the genome mining of strain KR2-7, we identified nine antifungal and antibacterial compound biosynthetic gene clusters (BGCs) including fengycin, surfactin and Bacillomycin F, bacillaene, macrolactin, sporulation killing factor (skf), subtilosin A, bacilysin, and bacillibactin. The corresponding compounds were confirmed through MALDI-TOF-MS chemical analysis. The gene/gene clusters involved in plant colonization, plant growth promotion, and induced systemic resistance were also identified in the KR2-7 genome, and their related secondary metabolites were detected. In light of these results, the biocontrol potential of strain KR2-7 against tomato Fusarium wilt was identified. This study highlights the potential to use strain KR2-7 as a plant-growth promotion agent.

Research Area(s)

  • B. inaquosorum KR2-7, Biocontrol, Fusarium wilt, Gene clusters, Genome mining, MALDI-TOF-MS, Secondary metabolites

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