Streptomyces rapamycinicus HCD1–10: An effective biocontrol actinomycetes against postharvest Chinese flat peach brown rot caused by Monilinia fructicola

Jia, Fan; Chen, Meijun; Liu, Changyun; Chen, Shan; Liu, Weina; Huang, Kezhen; Sun, Xianchao; Ma, Guanhua; Chen, Guokang

doi:10.1016/j.scienta.2023.112836

Scientia Horticulturae

2024

DOI: 10.1016/j.scienta.2023.112836

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Streptomyces rapamycinicus HCD1–10: An effective biocontrol actinomycetes against postharvest Chinese flat peach brown rot caused by Monilinia fructicola

Fan Jia,

Meijun Chen,

Changyun Liu

et al.

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Cited by 2 publications

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Nitric oxide-mediated PpRAP2.2 regulates the transcription of PpRbohA/D to enhance resistance to Monilinia fructicola in peach fruit

Wang,

Zhao,

et al. 2024

Scientia Horticulturae

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Nitric oxide-mediated PpRAP2.2 regulates the transcription of PpRbohA/D to enhance resistance to Monilinia fructicola in peach fruit

Wang,

Zhao,

et al. 2024

Scientia Horticulturae

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Inhibition of Monilinia fructicola sporulation and pathogenicity through eucalyptol‐mediated targeting of MfCat2 by Streptomyces lincolnensis strain JCP1‐7

Chen,

Yang,

Chen

et al. 2024

Molecular Plant Pathology

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Peach brown rot, attributed to Monilinia fructicola, presents a significant threat to postharvest peach cultivation, causing losses of up to 80%. With an increasing number of countries, spearheaded by the European Union, imposing bans on chemical agents in fruit production, there is a growing interest in mining highly active antibacterial compounds from biological control strains for postharvest disease management. In this study, we highlight the unique ability of Streptomyces lincolnensis strain JCP1‐7 to inhibit M. fructicola sporulation, despite its limited antimicrobial efficacy. Through GC–MS analysis, eucalyptol was identified as the key compound. Fumigation of diseased fruits with eucalyptol at a concentration of 0.0335 μg cm−3 demonstrated an in vivo inhibition rate against M. fructicola of 93.13%, completely suppressing spore formation. Transcriptome analysis revealed the impact of eucalyptol on multiple pathogenesis‐related pathways, particularly through the inhibition of catalase 2 (Cat2) expression. Experiments with a MfCat2 knockout strain (ΔMfCat2) showed reduced pathogenicity and sensitivity to JCP1‐7 and eucalyptol, suggesting MfCat2 as a potential target of JCP1‐7 and eucalyptol against M. fructicola. Our findings elucidate that eucalyptol produced by S. lincolnensis JCP1‐7 inhibits M. fructicola sporulation by regulating MfCat2, thereby effectively reducing postharvest peach brown rot occurrence. The use of fumigation of eucalyptol offers insights into peach brown rot management on a large scale, thus making a significant contribution to agricultural research.

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Streptomyces rapamycinicus HCD1–10: An effective biocontrol actinomycetes against postharvest Chinese flat peach brown rot caused by Monilinia fructicola

Cited by 2 publications

References 60 publications

Nitric oxide-mediated PpRAP2.2 regulates the transcription of PpRbohA/D to enhance resistance to Monilinia fructicola in peach fruit

Nitric oxide-mediated PpRAP2.2 regulates the transcription of PpRbohA/D to enhance resistance to Monilinia fructicola in peach fruit

Inhibition of Monilinia fructicola sporulation and pathogenicity through eucalyptol‐mediated targeting of MfCat2 by Streptomyces lincolnensis strain JCP1‐7

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