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bacillus velezensis JK-XZ8 prevents and controls crown gall disease on Prunus subhirtella by colonizing and inducing resistance

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Journal of Forestry Research 2022年第3期33卷 1019-1031页

作者： Xitang Zhang Weiliang Kong Xiaoqin Wu Jianren Ye Co-Innovation Center for Sustainable Forestry in Southern China College of ForestryNanjing Forestry UniversityNanjing210037JiangsuPeople’s Republic of China Jiangsu Key Laboratory for Prevention and Management of Invasive Species Nanjing Forestry UniversityNanjing210037JiangsuPeople’s Republic of China

Crown gall of Prunus subhirtella Miq., flowering cherry, is a soil-borne bacterial disease caused by Agrobacterium tumefaciens Smith & Townsend and has caused serious damage to the species in recent years in China. In this study, the colonization of sapling roots, the biocontrol efficacy, the expression of defense-related genes and the enzyme activity in roots of P. subhirtella inoculated with the bacillus velezensis JK-XZ8 against A. tumefaciens were determined under greenhouse conditions. The results showed that the JK-XZ8 strain colonized in the rhizosphere and root surfaces of the saplings. Sole application of the strain increased activities of polyphenol oxidase (PPO) and phenylalanine ammonia lyase (PAL) without affecting superoxide dismutase (SOD). SOD and PPO activities increased in the prevention group, and the activity of PAL increased in both the prevention and cure groups. The expression of the defense-related genes PAL and PR-1 of salicylic acid pathway in roots increased in both the prevention and cure groups. Simultaneously on day 3, the expression of both COI and MYC2 genes of the jasmonic acid pathway significantly increased in the two groups. The incidence of crown gall in the prevention and the cure groups were 48.1% and 66.7%, respectively, significantly lower compared to the pathogens alone (87.5%). This study showed that the application of the JK-XZ8 strain reduced the incidence of crown gall in P. subhirtella saplings in the two groups, and the prevention group had better control efficacy. In addition, the JK-XZ8 strain protects against crown gall by developing induced systemic resistance and systemic acquired resistance in the roots of the cherry saplings.

关键词： bacillus velezensis Prunus subhirtella Crown gall Plant-induced resistance Control effect

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Research advance of bacillus velezensis:bioinformatics,characteristics,and applications

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Food Science and Human Wellness 2024年第4期13卷 1756-1766页

作者： Ting Su Biao Shen Xingjuan Hu Yue Teng Peifang Weng Zufang Wu Lianliang Liu State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Key Laboratory of Animal Protein Deep Processing Technology of ZhejiangZhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and NutritionSchool of Food and Pharmaceutical SciencesNingbo UniversityNingbo 315000China Zhoushan Customs District Zhoushan 316100China

bacillus velezensis is a Gram-positive and spore-forming *** has potent antimicrobial properties that can be used to promote plant growth and as a pesticide by inhibiting *** has the capability to generate a diverse range of enzymes that have potential applications in various fields,such as enzyme production,fermented food,degradation of pollutants,and *** addition,*** is a promising *** possesses high bile-salt tolerance characteristics and has a high success rate of colonization in the intestinal ***,the strain can also regulate gut microbiota constitute by increasing the number of beneficial microorganisms and decreasing the number of ***,based on its special properties,including high-yield protease production and high salt-tolerance,*** shows potential for use in marine protein fermentation,opening up new avenues for the development of novel food products and bioactive *** addition,*** can shorten the fermentation time as well as improve the nutritional value and flavor of fermented *** safety of *** for food production was *** review provides valuable insights into the potential uses and benefits of ***,particularly in the context of fermented foods.

关键词： bacillus velezensis Bioinformatics Properties Fermentation Bioactive peptides

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The probiotic effects of host-associated bacillus velezensis in diets for hybrid yellow catfish(Pelteobagrus fulvidraco♀×Pelteobagrus vachelli♂)

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Animal Nutrition 2023年第4期15卷 114-125页

作者： Zhehui Ji Xing Lu Mingyang Xue Yuding Fan Juan Tian Lixue Dong Chuanzhong Zhu Hua Wen Ming Jiang College of Fisheries and Life Science Shanghai Ocean UniversityShanghaiChina Yangtze River Fisheries Research Institute Chinese Academy of Fishery SciencesWuhanChina Fujian Key Laboratory of Functional Aquafeed and Culture Environment Control Fujian DBN-HY Aquatic Science and Technology Group Co.LtdZhao'anChina

This study was to evaluate the potential of a host-associated bacillus velezensis as a probiotic for hybrid yellow catfish(Pelteobagrus fulvidraco♀×Pelteobagrus vachelli♂).Diets(B0 to B5)containing 0,0.90×10^(8),0.80×109,0.85×10^(10),0.90×10^(11),0.83×10^(12)CFU/kg *** YFI-E109 were fed to the fish with initial weight(3.07±0.08 g)in a recirculating aquaculture system for six weeks with three replicates,*** effects were analyzed based on growth,body composition,liver and gut morphology,gut microbiome,and liver *** of the bacterial genome has shown that the most abundant genes in *** YFI-E109 were distributed in carbohydrate and amino acid *** in groups B3 and B4 had better growth performance,and higher intestinal amylase(AMS)and lipase(LPS)activities compared with other groups(P<0.05).Fish in groups B0 and B5 showed significant liver damage,while this status improved in group *** liver malondialdehyde(MDA)content in group B3 was lower than that in other groups(P<0.05).The abundance of Mycoplasma,Ralstonia and Acinetobacter was significantly reduced in B3 and B5 compared to *** amino acid and carbohydrate metabolism pathways were enriched in group B3 compared with group *** conclusion,dietary *** YFI-E109 supplementation has the potential to improve growth,liver metabolism,and liver and gut health,and reshape the gut microbiome of hybrid yellow *** *** YFI-E109 reduced the prebiotic *** recommended dietary supplementation of *** YFI-E109 is 0.31×10^(10) to 0.77×10^(11)CFU/kg for hybrid yellow catfish according to the quadratic regression method by plotting specific growth rate(SGR),feed conversion ratio(FCR),MDA and activities of AMS against dietary *** YFI-E109 levels.

关键词： bacillus velezensis Probiotics Hybrid yellow catfish Intestinal health Liver metabolome

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Nutrition promotion of brewer’s spent grain by symbiotic fermentation adding bacillus velezensis and Levilactobacillus brevis

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Food Bioscience 2022年第5期49卷 755-762页

作者： Jiarui Zeng Feibi Sheng Xi Hu Zhenfeng Huang Xiaofei Tian Zhenqiang Wu School of Biology and Biological Engineering South China University of TechnologyGuangzhou510006China Pan Asia(Jiangmen)Institute of Biological Engineering and Health Jiangmen529080China

Brewer’s spent grain(BSG)is the main byproduct of the beer industry and is commonly used as a low-value animal feed or food *** study investigated the role of symbiotic fermentation with bacillus velezensis and Levilactobacillus brevis in improving the nutritional value of *** addition of *** increased the cell growth of *** by over thirty-fold higher than that in the single-strain ***,cellulase and protease activities were substantially increased,and more soluble sugars were *** amino acid,glutamic acid,andγ-aminobutyric acid(GABA)levels increased by 52.2%,155.1%,and 144.1%,***,lactic acid production *** analysis showed that the glycolysis-related gene pykA,pentose phosphate pathway gene gnd,and GABA-related gene gad were upregulated,while the heterolactin-related gene xpkA was downregulated,explaining that *** might inhibit heterolactin fermentation while enhancing GABA *** study provides a potential strategy for the high-value utilization of BSG in the food or feed industry.

关键词： Brewer’s spent grain Symbiotic fermentation Nutrition promotion bacillus velezensis Levilactobacillus brevis

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Depiction of secondary metabolites and antifungal activity of bacillus velezensis DTU001

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Synthetic and Systems Biotechnology 2019年第3期4卷 142-149页

作者： Sagarika Devi Heiko T.Kiesewalter Renato Kovacs Jens Christian Frisvad Tilmann Weber Thomas Ostenfeld Larsen Akos T.Kovacs Ling Ding Department of Biotechnology and Biomedicine Technical University of Denmark2800Kgs LyngbyDenmark Department of Medical Microbiology Faculty of MedicineUniversity of Debrecen4032DebrecenHungary Center for Biosustainability Technical University of Denmark2800Kgs LyngbyDenmark

For a safe and sustainable environment,effective microbes as biocontrol agents are in high *** have isolated a new bacillus velezensis strain DTU001,investigated its antifungal spectrum,sequenced its genome,and uncovered the production of lipopeptides in HPLC-HRMS *** test the antifungal efficacy,extracts of *** DTU001 was tested against a range of twenty human or plant pathogenic *** demonstrate that inhibitory potential of *** DTU001 against selected fungi is superior in comparison to single lipopeptide,either iturin or *** isolate showed analogous biofilm formation to other closely related *** further support the biocontrol properties of the isolate,coculture with Candida albicans demonstrated that *** DTU001 exhibited excellent antiproliferation effect against *** summary,the described isolate is a potential antifungal agent with a broad antifungal spectrum that might assist our aims to avoid hazardous pathogenic fungi and provide alternative to toxicity caused by chemicals.

关键词： bacillus velezensis Candida albicans Secondary metabolites Biocontrol Biofilm

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Efficient production of poly-γ-glutamic acid by bacillus velezensis via solid-state fermentation and its application

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Food Bioscience 2022年第2期46卷 631-638页

作者： Hong Liu Qiaojuan Yan Yuchuan Wang Yanxiao Li Zhengqiang Jiang Key Laboratory of Food Bioengineering(China National Light Industry) College of EngineeringChina Agricultural UniversityBeijing100083China Beijing Advanced Innovation Center for Food Nutrition and Human Health College of Food Science&Nutritional EngineeringChina Agricultural UniversityBeijing100083China

A novel glutamate-dependent poly-γ-glutamic acid(γ-PGA)-producing strain bacillus velezensis CAU263 isolated from Chinese traditional Douchi was *** efficient method ofγ-PGA production was performed by this strain via solid-state fermentation(SSF)using guar *** maximal yield ofγ-PGA reached 158.5 g/kg dry weight(DW)in 250 mL flasks and 155.1 g/kg DW in shallow tray,*** molecular weight ofγ-PGA was 3.8×106 Da,the ratio of L/D-glutamic acid was 26.1%and 73.9%.Additionally,γ-PGA significantly improved the operating characteristics of wheat dough,the specific volume of bread was increased by 15.8%and the bread hardness was reduced by 44.2%owing to the addition of 0.3 g/kgγ-***,γ-PGA could be produced by bacillus velezensis CAU263 at high level using guar meal and might have potential application prospect in food industry.

关键词： bacillus velezensis Poly-γ-glutamic acid Guar meal Solid-state fermentation Bread quality

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Identification of bacillus velezensis ZHX-7 and its effects on peanut growth promotion and disease control

Identification of Bacillus velezensis ZHX-7 and its effects ...

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中国植物病理学会2021年学术年会

作者： ZHANG Xia XU Manlin GUO Zhiqing YU Jing LI Ying SONG Xinying HE Kang CHI Yucheng Shandong Peanut Research Institute

A biocontrol strain ZHX-7 with good inhibitory effect on the growth of Aspergillus niger,the causal agent of peanut crown rot,was isolated in the soil sample from Laixi,Shandong Province by confront culture *** strain ZHX-7 was identified as bacillus velezensis based on morphological characteristics,16 S rDNA and gyrB sequence *** bacterial suspension,volatile gas and fermentation broth of ZHX-7 could effectively inhibit the growth of Aspergillus niger,Alternaria alternata,and Phoma *** the same time,the strain ZHX-7 could promote peanut *** addition,ZHX-7 promoted peanut growth and exhibited obvious resistance to crown rot,with the control effect reaching 81.97%.

关键词： peanut crown rot bacillus velezensis growth promoting effect biological control

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Biocontrol efficacy of bacillus velezensis HC-8 against powdery mildew of honeysuckle caused by Microsphaera lonicerae

Biocontrol efficacy of Bacillus velezensis HC-8 against powd...

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中国植物病理学会2021年学术年会

作者：崔文艳何朋杰 College of Basic Medicine Guizhou University of Traditional Chinese Medicine

Powdery mildew caused by Microsphaera lonicerae is a serious disease that causes significant loss to honeysuckle production in *** disease is difficult to control using chemical fungicides,and biological control agents may therefore constitute a powerful *** develop an environmentally friendly microbial agent for biocontrol of powdery mildew,we screened strains of bacillus *** for biocontrol *** of the 102 isolates,strain HC-8,demonstrated high antifungal activity against three phytopathogenic fungi and efficiently suppressed the conidia germination of *** under in vitro *** isolate,which offered significant biocontrol of powdery mildew disease in honeysuckle,was identified as belonging to bacillus *** challenge inoculation with ***,honeysuckle plants treated with a concentration of 1×10 CFU/mL showed the highest protection value(PV).Biocontrol efficacy was highest when strain HC-8 was applied prior to pathogen inoculation,and the minimum PV was recorded when HC-8 was used one day after pathogen *** of the GFP-tagged strain HC-8-gfp persisted on honeysuckle leaves up to 25 days after *** addition,we found that *** HC-8 inducted defense-related enzyme activities in the leaves of ***,the present study provides a potential high-efficienc;y strategy for the biological control of powdery mildew disease and shows that *** HC-8 has significant potential as a biocontrol agent for honeysuckle production.

关键词： bacillus velezensis Biological control Powdery mildew Colonization Induced systematic resistance

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The Antagonist Effects and Mechanisms of bacillus velezensis XS142 Against Different Soil-borne Diseases of Sunflower

The Antagonist Effects and Mechanisms of Bacillus velezensis...

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中国植物病理学会2024年学术年会

作者： WANG Yating YANG Jianfeng ZHANG Jian ZHANG Wenbing ZHAO Juno College of Horticulture and Plant Protection Inner Mongolia Agricultural University

The difficulties in crop rotation facilitated the occurrence of different soil-borne diseases and affected the yield and quality of sunflower ***,the traditional chopping system between sunflower and potato in Inner Mongolia region accelerated the severity of soil-borne diseases of *** isolated bacillus velezensis XS142 from soil rhizosphere of potato,and it has antagonist effects on potato wilt,this promoted us to test its broad-spectrum effects on controlling sunflower soilborne *** data indicated that XS142 exhibits a certain broad-spectrum antibacterial activity against three pathogenicfungi which caused different soil-borne diseases,such as Sunflower White Mold（SWM）,Sunflower Verticillium Wilt（SVW） and Sunflower Fusarium Wilt（SFW） on *** non-volatile metabolites produced by XS142 exhibited significant antibacterial *** antibacterial metabolites have been identified through LC/MS *** pot experiments showed that,when the roots of sunflower plants were pretreated with the suspension of XS142,followed by artificial inoculation with different pathogenicfungi,the control effect of XS142 against Verticillium dahliae、Fusarium *** Sclerotinia sclerotirum was 30.79%、59.35% and 32.32% ***,pretreatment of detached sunflower leaves and stems with the bacterial suspension XS142,followed by inoculation with *** could inhibit the expansion of lesions ***,the stable colonization of XS142 on the roots of sunflower was confirmed by using GFP *** pretreatment with XS142,the deposition of callose,accumulation of HO,and activity of defense-related enzymes（such as POD,SOD,PPO,etc.） in the roots of sunflower were also detected *** a word,we concluded that the *** XS142 strain showed antagonist effects on the occurrenece of different soi-borne diseases of sunflower via producing antibacterial metabolites,competing spatially with path

关键词： Sunflower soil-borne diseases bacillus velezensis biocontrol mechanisms

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Microbial community structure analyses and cultivable denitrifier isolation of Myriophyllum aquaticum constructed wetland under low C/N ratio

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Journal of Environmental Sciences 2023年第5期127卷 30-41页

作者： Jialiang Zuo Lina Xu Jianlin Guo Shengjun Xu Shuanglong Ma Cancan Jiang Dongmin Yang Danhua Wang Xuliang Zhuang Key Laboratory of Environmental Biotechnology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Sino-Danish Center University of Chinese Academy of SciencesBeijing 101408China Institute of Tibetan Plateau Research Chinese Academy of SciencesBeijing 100101China College of Resources and Environmental Sciences Henan Agricultural UniversityZhengzhou 450002China Ningxia Zhongke Jingke Testing Technology Company Yinchuan 750000China

With the rapid expansion of livestock production,the amount of livestock wastewater accumulated *** of biodegradable organic matter makes denitrification of livestock wastewater after anaerobic digestion more *** this study,Myriophyllum aquaticum constructed wetlands(CWs)with efficient nitrogen removal performance were established under different carbon/nitrogen(C/N)*** of community composition reveals the change of *** CWs in microbial community structure with C/N *** proportion of Proteobacteria which is one of the dominant phyla among denitrifier communities increased significantly under low C/N ratio ***,to obtain cultivable denitrifier that could be added into CWs in situ,33 strains belonging to phylum Proteobacteria were isolated from efficient *** CWs,while the best-performing denitrification strain M3-1 was identified as bacillus velezensis JT3-1(GenBank ***032506.1).Redundancy analysis and quadratic models showed that C/N ratio had significant effects on disposal of nitrate(NO_(3)^(−)-N)and the strains isolated could perform well in denitrification when C/N ratio is relatively *** addition,they have relatively wide ranges of carbon sources,temperature and a high NO_(3)^(−)removal rate of 9.12 mg/(L·hr)at elevated concentrations of 800 mg/L ***,strains isolated from *** CWs with low C/N ratio have a practical application value in the treatment of nitrate-containing *** denitrifying bacteria could be added to CWs to enhance nitrogen removal efficiency of CWs for livestock wastewater with low C/N ratio in the future.

关键词： Myriophyllum aquaticum constructed wetlands Denitrification Microbial community structure bacillus velezensis

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