An endophytic strain Bacillus velezensis JZ51 controlled pink mold rot of postharvest apple fruit via antagonistic action and disease resistance induction

Dai, Pengbo; Li, Na; Li, Bing; Wang, Shutong; Wang, Yanan; Meng, Xianglong; Li, Bo; Cao, Keqiang; Hu, Tongle

doi:10.1016/j.postharvbio.2024.112793

Cited by 6 publications

(2 citation statements)

References 42 publications

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“…27 B. velezensis JZ51 controlled pink mold rot in apple by enhancing defense-related enzyme activities, such as SOD, polyphenol oxidase and phenylalanine ammonia lyase. 28 Bacillus spp. triggered cell death in Nicotiana benthamiana and elicited an early defense response to pathogens, including reactive oxygen species burst, activation of mitogen-activated protein kinase (MAPK) and the upregulation of plant immunity genes.…”

Section: Discussionmentioning

confidence: 99%

Bacillus‐derived consortium enhances Ginkgo biloba's health and resistance to Alternaria tenuissima

Ji,

Liu,

Han

et al. 2024

Pest Management Science

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BACKGROUNDBacillus, as a plant‐growth‐promoting rhizobacteria, can enhance the resistance of plants to phytopathogens. So, in our study, the excellent biocontrol Bacillus strains were screened and used to control ginkgo leaf blight (Alternaria tenuissima).RESULTSFour biocontrol Bacillus strains—Bsa537, Bam337, Bso544, and Bsu503—were selected from 286 isolates based on their capacity to inhibit pathogens and promote plant growth. They significantly improved the resistance of ginkgo to leaf blight, especially the mixture of four Bacillus strains, which contributed to the decrease in lesion areas by more than 40%. Hence, a mixture of Bacillus strains was used to control ginkgo leaf blight in the field. Treatment efficiency varied from 30% to 100% (average 81.5%) and was higher than that of the control (from −2% to −18%, average − 8.5%), the antioxidant capacity of the treated ginkgo was also stronger. Additionally, ginkgo biomass rose as a result of treatment with the Bacillus mixture, including leaf weight, area, thickness, number of lateral roots, and root weight. Furthermore, the Bacillus mixture improved the ginkgo rhizosphere soil by boosting the number of beneficial microorganisms, lowering the number of pathogens, and quickening soil catabolism.BACKGROUNDThe Bacillus mixture improved the health status of ginkgo by protecting it from pathogen attack, promoting its growth, improving microorganism community in rhizosphere. This work closes a technological gap in biological control of ginkgo leaf blight, investigates the application methods of compound Bacillus biofertilizers, and establishes a framework for the population and commercialization of these products.This article is protected by copyright. All rights reserved.

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Section: Discussionmentioning

confidence: 99%

Bacillus‐derived consortium enhances Ginkgo biloba's health and resistance to Alternaria tenuissima

Ji,

Liu,

Han

et al. 2024

Pest Management Science

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“…In addition to volatile organic compounds (VOCs), attention should also be directed towards diffusible and soluble compounds, as they cover a vast array of potentially biologically active substances capable of inhibiting the growth of phytopathogens [ 22 , 23 , 24 , 25 ]. Among these compounds are cyclic lipopeptides belonging to the iturin, surfactin, and fengicin families, which are renowned for their potent activity against a broad spectrum of phytopathogens, including bacteria, fungi, oomycetes, and viruses [ 26 , 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Novel Pseudomonas Species Prevent the Growth of the Phytopathogenic Fungus Aspergillus flavus

Rabiço,

Borelli,

Alnoch

et al. 2024

BioTech

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In response to the escalating demand for sustainable agricultural methodologies, the utilization of microbial volatile organic compounds (VOCs) as antagonists against phytopathogens has emerged as a viable eco-friendly alternative. Microbial volatiles exhibit rapid diffusion rates, facilitating prompt chemical interactions. Moreover, microorganisms possess the capacity to emit volatiles constitutively, as well as in response to biological interactions and environmental stimuli. In addition to volatile compounds, these bacteria demonstrate the ability to produce soluble metabolites with antifungal properties, such as APE Vf, pyoverdin, and fragin. In this study, we identified two Pseudomonas strains (BJa3 and MCal1) capable of inhibiting the in vitro mycelial growth of the phytopathogenic fungus Aspergillus flavus, which serves as the causal agent of diseases in sugarcane and maize. Utilizing GC/MS analysis, we detected 47 distinct VOCs which were produced by these bacterial strains. Notably, certain volatile compounds, including 1-heptoxydecane and tridecan-2-one, emerged as primary candidates for inhibiting fungal growth. These compounds belong to essential chemical classes previously documented for their antifungal activity, while others represent novel molecules. Furthermore, examination via confocal microscopy unveiled significant morphological alterations, particularly in the cell wall, of mycelia exposed to VOCs emitted by both Pseudomonas species. These findings underscore the potential of the identified BJa3 and MCal1 Pseudomonas strains as promising agents for fungal biocontrol in agricultural crops.

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Endophytic Bacillus velezensis GsB01 controls Gleditsia sinensis wilt by secreting antifungal metabolites and modulates symbiotic microbiota within trees

Zeng,

Chen,

Wei

et al. 2024

Pest Management Science

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BACKGROUNDIdentifying effective biological control agents against fungal pathogens and determining their mechanisms of action are important in the control of plant diseases.RESULTSIn this study, we isolated an endophytic bacterial strain, GsB01, from the branches of asymptomatic Gleditsia sinensis. Multi‐locus sequence analysis identified the strain as Bacillus velezensis. GsB01 exhibited significant antifungal activity against Thyronectria austroamericana, the causative agent of G. sinensis wilt. Liquid chromatography‐mass spectrometry identified four consistently present antimicrobial compounds in GsB01 metabolite fractions with high antifungal activity: macrolactin A, bacillaene A, surfactin, and iturin. GsB01's active metabolite fractions altered the metabolic profiles of T. austroamericana, disrupting seven pathways, including arginine biosynthesis, nucleotide metabolism, purine metabolism, and the pentose phosphate pathway. Furthermore, absolute quantitative polymerase chain reaction analysis suggested that GsB01 may increase the abundance of endophytic bacteria in G. sinensis. The 16S rRNA amplicon sequencing revealed changes in the endophytic landscape in stems and roots following GsB01 introduction, particularly with significant variation in the dominant bacterial genera within the stems.CONCLUSIONThe study highlights GsB01's potential against plant wilt and suggests that its antifungal activity is achieved by secreting antifungal metabolites. The study also recorded changes in the symbiotic microbiota within trees that had been infected with a pathogenic fungus and subsequently treated with an endophytic antagonistic bacterial strain. © 2024 Society of Chemical Industry.

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An endophytic strain Bacillus velezensis JZ51 controlled pink mold rot of postharvest apple fruit via antagonistic action and disease resistance induction

Cited by 6 publications

References 42 publications

Bacillus‐derived consortium enhances Ginkgo biloba's health and resistance to Alternaria tenuissima

Bacillus‐derived consortium enhances Ginkgo biloba's health and resistance to Alternaria tenuissima

Novel Pseudomonas Species Prevent the Growth of the Phytopathogenic Fungus Aspergillus flavus

Endophytic Bacillus velezensis GsB01 controls Gleditsia sinensis wilt by secreting antifungal metabolites and modulates symbiotic microbiota within trees

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