6600results about "Disinfectants" patented technology

The invention provides a Pseudomonas protegens P150 strain and an application of the Pseudomonas protegens P150 strain, and belongs to the technical field of biocontrol bacteria. The defensive pseudomonas P150 is preserved in the China General Microbiological Culture Collection Center (CGMCC), the preservation number is CGMCC No.34520, the preservation time is May 13, 2025, and the preservation address is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing. The defensive pseudomonas P150 disclosed by the invention has the effects of inhibiting various pathogenic bacteria, producing enzymes, promoting growth and preventing and treating tomato bacterial wilt and soybean pustule. The microbial inoculum prepared by adopting the biocontrol bacterium can reduce the dosage of chemical pesticides and the prevention and control cost of plant diseases, is green and pollution-free, can be used for preventing and controlling tomato bacterial wilt and soybean pustule, and has a relatively good popularization value.

The invention provides an antibacterial peptide cAMP048 sourced from microorganisms in a deep sea environment and application of the antibacterial peptide cAMP048, and belongs to the technical field of peptide inhibitors. The antibacterial peptide cAMP048 has an amino acid sequence as shown in SEQ ID NO: 1 (Sequence Identity Number 1). The antibacterial peptide can inhibit the growth of acinetobacter baumannii at 64 mu M, inhibit the growth of multi-drug-resistant acinetobacter baumannii and multi-drug-resistant enterococcus faecium at 128 mu M and inhibit the growth of escherichia coli, staphylococcus aureus and multi-drug-resistant klebsiella pneumoniae at 256 mu M. The antibacterial peptide can be used for preparing products with antibacterial and / or bactericidal performance, and can be applied to preparation of antibacterial and / or bactericidal products. Such as food, skin care products or medical supplies.

The invention provides a streptomyces, which is named as Streptomyces sp. And is registered and preserved in Guangdong Microbial Culture Collection Center, and the preservation number is GDMCC No: 65917. The invention also provides a fermentation broth of the streptomyces, and an ethanol extract and a crude extract of the fermentation broth. The novel streptomyces, the crude extract thereof and the like have broad-spectrum antibacterial activity, have a good antagonistic effect on various pathogenic bacteria such as banana long leaf spot germs and banana colletotrichum gloeosporioides, can enable hyphae of the banana colletotrichum gloeosporioides to shrink, deform and break, inhibit spore germination of the banana colletotrichum gloeosporioides, and have a good anti-bacterial effect on the banana colletotrichum gloeosporioides. According to the present invention, with the application of the bacterial strain, the colletotrichum gloeosporioides spores are shrunk and broken, the growth of the colletotrichum gloeosporioides is inhibited, the peroxidase activity, the polyperoxidase activity, the CAT activity and the like in the banana peel can be improved, and the bacterial strain is the potential biological agent for the prevention and control of the colletotrichum gloeosporioides diseases, and has wide development space and good development and application prospects.

The invention belongs to antibacterial materials, and particularly relates to antibacterial modified waterborne polyurethane and a preparation method and application thereof.The preparation method of the antibacterial modified waterborne polyurethane comprises the following steps that polyol and diisocyanate are mixed and subjected to a prepolymerization reaction, and a polyurethane prepolymer is obtained; mixing the polyurethane prepolymer and a chain extender, and carrying out chain extension reaction; in the chain extension reaction, adding the graft and carrying out esterification reaction to obtain a first intermediate; mixing the first intermediate with triethylamine and carrying out neutralization reaction to obtain a second intermediate; and emulsifying the second intermediate in deionized water to obtain the antibacterial modified waterborne polyurethane. Compared with the prior art, the antibacterial waterborne polyurethane has the advantages that the problems of poor intermiscibility, low durability and the like in physical addition and the problems of limited binding objects and weak antibacterial effect in covalent binding in the antibacterial waterborne polyurethane in the prior art are solved. According to the scheme, arginine and chitosan are grafted to a molecular chain of waterborne polyurethane, so that the waterborne polyurethane is endowed with a synergistic antibacterial property.

The invention belongs to the technical field of genetic engineering, and particularly relates to an antibacterial peptide with antibacterial and antiviral effects and application and a product thereof. The amino acid sequence of the antibacterial peptide provided by the invention has the following general formula: X1GX2FX3FX4KKFX5LFX6X7SKVLK, x1 is M or has no amino acid; x2 is one of R, G and H; x3 is one of KS, KR, HR and HH; x4 is R or L; x5 is one of KK, HH and HK; x6 is RR or KK; and X7 is I or L. The antibacterial peptide disclosed by the invention has a relatively good antibacterial effect, and shows antiviral activity on HPV16 (Human Papilloma Virus 16) and HPV18 (Human Papilloma Virus 18). Good application prospects are shown in the preparation of antibacterial or antiviral products.

The invention belongs to the technical field of microorganisms, and provides a growth-promoting P.adami M6 and application thereof, the P.adami M6 is preserved in the China Center for Type Culture Collection, the preservation number is CCTCC No: M20242835, the preservation date is December 18, 2024, the preservation number is CCTCC No: M20242835, the preservation number is CCTCC No: M20242835, the preservation number is CCTCC No: M20242835, and the preservation number is CCTCC No: M20242835. The strain is separated from rhizosphere soil of field planting foxtail millet in the Inner Mongolia red peak area, and is obtained through artificial separation and purification; the strain has the growth promoting characteristics of nitrogen fixation, phosphorus dissolution, IAA production and siderophore production; the M6 fungicide is used for inoculating millet, so that the growth of millet seedlings can be obviously promoted, and the plant height, the root length and the overground part and underground part biomass of the millet are obviously increased; m6 is used as a microbial agent to soak seeds during sowing and irrigate a bacterial liquid once 7 days after sowing, so that the growth effect of millet is best.

The invention discloses a porphyrin-based covalent organic framework nano material, a preparation method and application of the porphyrin-based covalent organic framework nano material in polyurethane, and belongs to the field of functional nano materials and antibacterial materials. The porphyrinyl covalent organic framework nano material is prepared from 5, 10, 15, 20-tetra (4-aminophenyl) porphyrin and bis-(5-formyl furfuryl) ether through a Schiff base reaction, and the structural formula of the porphyrinyl covalent organic framework nano material is # imgabs0. The porphyrinyl covalent organic framework nano material prepared by the invention has relatively high photothermal conversion efficiency when being used as a photothermal agent, and has a relatively good sterilization effect under the condition of relatively low concentration. Besides, based on the porphyrin-based covalent organic framework nano material, a WPUS / Por-COF composite film is prepared, the composite film has excellent mechanical properties and excellent photothermal conversion efficiency, and has a good sterilization effect under the condition of relatively low concentration, bacteria can be inactivated within a short time, and the sterilization rate can reach 99% or above.

The invention provides Yunnan golden camellia root endophytic fungi and application thereof, and relates to the technical field of crop disease control. The Yunnan camellia nitidissima root endophytic fungus is Lecanicillium vase JHC098 and is preserved in the China Center for Type Culture Collection, the preservation number is CCTCC NO: M 2025749, and a liquid fermentation liquor crude extract of the Lecanicillium vase can be applied to prevention and treatment of crop diseases. The invention overcomes the defects in the prior art, and the crude extract of the liquid fermentation liquor of the endophytic fungus Lecanicillium viculare JHC098 at the root of Yunnan golden camellia can effectively inhibit the growth of pathogenic bacteria such as citrus canker and tobacco bacterial wilt, thereby achieving the purpose of certain biological control.

Burkholderia, and a composition, use and usage method thereof. Provided are the Burkholderia, and a composition comprising the strain and / or a metabolite, culture, fermentation broth and / or extract thereof. The Burkholderia or the composition thereof can generate a siderophore, induce plants or seeds thereof to generate systemic resistance to plant pathogens, and reduce the chemotaxis of plant pathogens to plants, so that prevention and treatment of plant diseases and insect pests are achieved. In addition, plant root system development can be promoted, a nitrogen fixation effect is provided, a phosphate solubilization effect is provided, indoleacetic acid is generated, and weeds are removed, thereby promoting plant growth.

The invention belongs to the field of microorganisms, and particularly relates to banana endophytic bacillus velezensis JDB15 and application thereof. The novel endophytic bacillus velezensis JDB15 is separated from banana plants, has the characteristics of efficient inhibition of Foc4, growth promotion of bananas and broad-spectrum antagonism of various pathogenic bacteria, can inhibit the morbidity of corn southern leaf blight, tomato fusarium wilt, tobacco gray mold and peach anthracnose, has the effects of inhibiting the morbidity of various pathogenic fungi, and has the advantages of high efficiency, low cost and the like. And a good broad-spectrum effect is achieved. Meanwhile, the strain can kill nematodes, has wide biocontrol bacterium activity, can be developed deeply subsequently, and provides a sustainable and green solution for prevention and treatment of banana wilt and other diseases and insect pests.

The invention relates to a complex microbial inoculant for preventing and treating citrus huanglongbing as well as a preparation method and application of the complex microbial inoculant. The compound bacterial agent for preventing and treating the citrus huanglongbing is prepared from the following components in parts by weight: 5 to 10 parts of bacillus subtilis X1, 5 to 10 parts of bacillus pumilus X2, 5 to 10 parts of bacillus licheniformis X3, 5 to 10 parts of bacillus amyloliquefaciens X4 and 5 to 10 parts of pseudomonas fluorescens X5. The compound bacterial agent for preventing and treating the citrus huanglongbing comprises the following components in parts by weight: 5 to 10 parts of bacillus subtilis X1, 5 to 10 parts of bacillus pumilus X2, 5 to 10 parts of bacillus licheniformis X3, 5 to 10 parts of bacillus amyloliquefaciens X4 and 5 to 10 parts of pseudomonas fluorescens X5. After the complex microbial inoculant is added, the content of callose in infected leaves can be effectively reduced, the self-resistance mechanism of plants is induced, the disease resistance is improved, and the complex microbial inoculant has an obvious inhibiting effect and a growth promoting effect on Candidatus Liberibacter asiaticum.

The invention discloses a virulent bacteriophage vBValSR36H with a host being vibrio alginolyticus and application of the virulent bacteriophage vBValSR36H, and relates to the technical field of microbial control. The invention provides a bacteriophage capable of efficiently cracking Vibrio alginolyticus ATCC 17749T, the bacteriophage is named as vBValSR36H, the preservation number is 66248-B1, and the preservation address is Institute of Microbiology, Academy of Sciences in Guangdong Province. The vibrio alginolyticus bacteriophage vBValSR36H provided by the invention has good environmental stability and certain bactericidal activity, and has a relatively wide environmental adaptation range and relatively long survival time. The bacteriophage vBValSR36H provided by the invention can specifically and effectively kill, prevent and control related vibrio diseases, meanwhile, virulence factor genes and drug-resistant genes are not detected in the bacteriophage, and the bacteriophage vBValSR36H has the advantages of no toxic or side effect, high safety, environmental friendliness and wide application prospect. Therefore, the vibrio alginolyticus bacteriophage vBValSR36H can be completely applied to killing and / or preventing vibrio alginolyticus for non-disease diagnosis and treatment purposes.

The invention discloses a broad-spectrum lytic bacteriophage for preventing and controlling various vibrio infections in an aquaculture environment. The invention relates to V.alginolyticus phage vBValM-R37J, which is preserved in Guangdong Microbial Culture Collection Center (GDMCC) on August 6, 2025, the address is No.100 Courtyard, Xianlie Middle Road, Xianlie District, Guangzhou City, Guangdong Province, the postcode is 510070, and the preservation number is GDMCC NO.66813-B1. The invention further discloses a method for preparing the V.alginolyticus phage vBValM-R37J strain. The bacteriophage R37J is a candidate therapeutic bacteriophage with wide host spectrum, high splitting efficiency, gene safety and environmental stability, and has the potential of being popularized and applied in aquaculture as a novel biological tool for accurately preventing and controlling various vibrio infections. A new biological resource is provided for accurate prevention and control of aquatic pathogenic bacteria, and a theoretical basis and a technical support are provided for popularization and application of a phage therapy in an actual culture system.

Provided is an antibacterial peptide having an amino acid sequence X1KRFKKFFX2KLKKWV-NH2, wherein X1 is selected from any one or of amino acids A, C, D, E, F, G, H, K, L, N, M, P, Q, R, S, I, V, W, Y, and T or is absent; and X2 is an amino acid having an aromatic side chain or an amino acid having an alkaline side chain. In view of defects such as poor gastrointestinal fluid stability of antibacterial peptides in the prior art, a brand-new sequence design scheme and preparation method for an antibacterial peptide are provided. By means of a complete or partial D-amino acid substitution or structural derivatization of a peptide sequence, a series of antimicrobial peptides having stronger antibacterial activity and gastrointestinal stability as compared with the prior art are obtained, such that the antibacterial peptides have a wider application range and higher development potential value.

The invention relates to the technical field of microorganisms, in particular to nocardia seriolae bacteriophage as well as a composition and application thereof. The name of the nocardia seriolae bacteriophage is RDP-NS002, the nocardia seriolae bacteriophage is preserved in the China General Microbiological Culture Collection Center on August 25, 2025, and the preservation number of the nocardia seriolae bacteriophage is CGMCC No.46674. The nocardia seriolae bacteriophage is named as RDP-NS002, and the nocardia seriolae bacteriophage is preserved in the China General Microbiological Culture Collection Center on August 25, 2025. The composition comprises the bacteriophage. The bacteriophage or the composition is prepared in the following steps: (1) preparing a product for killing nocardia seriolae; (2) preparing a product for inhibiting nocardia seriola; and (3) application in preparation of a product for preventing and / or treating fish nocardia disease caused by nocardia seriolae. The phage has the characteristics of high thermal stability, high acid-base stability and high splitting rate, has a long-acting inhibition effect, and is beneficial to prevention and treatment of nocardia seriola diseases.

The invention discloses a carbon-doped titanium dioxide nanotube-molybdenum disulfide energy-storage antibacterial material and a preparation method thereof. The preparation method comprises the following steps: carrying out primary anodic oxidation on a clean titanium foil in a mixed electrolyte of ethylene glycol, water and ammonium fluoride; after ultrasonic treatment is carried out in a hydrochloric acid solution for set time, secondary anodic oxidation is carried out, and the mixed electrolyte of the secondary anodic oxidation is the same as that of the primary anodic oxidation; annealing the titanium foil subjected to anodic oxidation twice in an argon atmosphere, putting an annealed sample into a mixed solution of sodium molybdate, a sulfur source and glucose, and carrying out hydrothermal treatment; and the titanium foil subjected to hydro-thermal treatment is cleaned and dried, and the carbon-doped titanium dioxide titanium foil with the surface covered with molybdenum disulfide is obtained. The MoS2-coated carbon-doped titanium dioxide nanotube (TNT-C-atMoS2) with high biocompatibility developed by the invention has a synergistic effect of charge antibiosis and chemical sterilization, so that the problem of intractable biological fouling of a titanium-based metal material in ocean engineering equipment is effectively solved.

The invention belongs to the technical field of gene engineering, and particularly relates to a mutant of polymyxin efflux transporter and application of the mutant. The mutant is a PmxD transporter mutant, the amino acid sequence of the PmxD transporter mutant is shown as SEQ ID NO: 1, and compared with wild type PmxD, the polymyxin transport capacity of the PmxD transporter mutant (T38W) is improved by 450.46%; and the total discharge amount of polymyxin is increased by 85.72%. Meanwhile, the mutant can significantly improve the growth ability of the strain on a plate containing 250 [mu] g / mL of polymyxin B, namely significantly improve the autoresistance of paenibacillus polymyxa to polymyxin.

The invention relates to the technical field of microbial agents, in particular to a composite microbial agent and application of the composite microbial agent in prevention and treatment of forest root diseases, and the composite microbial agent comprises the following components in parts by weight: 15-25 parts of Trichoderma harzianum ATCC 20847; 10 to 20 parts of bacillus subtilis ATCC 605, 10 to 20 parts of bacillus subtilis ATCC 605, 10 to 20 parts of bacillus subtilis ATCC 606 and 10 to 20 parts of bacillus subtilis ATCC 607. 5-10 parts of a seaweed extract; 3 to 8 parts of chitosan; 2-5 parts of humic acid; 1 to 3 parts of glycine betaine; 0.5 to 1.5 parts of a trace element compound; 30 to 40 parts of perlite powder; according to the present invention, the fertilizer has characteristics of significant inhibition effect on a variety of forest root pathogenic bacteria, wide prevention and control spectrum, and long-term and stable disease prevention effect by adjusting the rhizosphere micro-ecosystem. Diseases are prevented and controlled, and the growth and root development of the forest trees are remarkably promoted.

The invention provides application of a pseudomonas parabarium YC15 strain in efficient prevention and treatment of wheat stem rot and various pathogenic bacteria. The invention provides a new application of the pseudomonas parabarium YC15 strain in prevention and control of plant diseases, and research shows that the YC15 strain has broad-spectrum bacteriostatic activity, has remarkable inhibitory activity on various plant pathogenic bacteria, can inhibit pathogenic fungi such as wheat stem rot, sesame root rot and colletotrichum gloeosporioides, and has a wide application prospect in prevention and control of plant diseases. And the compound has a relatively good inhibition effect on pathogenic bacteria, namely sesames pseudomonas solanacearum. The YC15 strain is applied to prevention and control of wheat stem rot, and pot experiments show that after the YC15 strain is adopted for treatment, plant lesions can be reduced, the inhibition effect of pathogenic bacteria on plants can be broken, the pathogenic bacteria can be effectively inhibited, plant growth can be promoted, and the wheat stem rot can be efficiently prevented and controlled. The invention provides new application of the YC15 strain, and the YC15 strain can be used for preventing and treating various plant protobacteria and diseases thereof, and has good development and application potential as a biocontrol bacterium.

The present disclosure provides compositions, kits, and systems comprising engineered bacteria and agricultural biologics, and methods of using the same to treat plants and improve one or more plant beneficial traits, such as plant yield, nutrient uptake, and resistance to abiotic or biological stress. Using the compositions, kits, and systems disclosed herein can further 5 reduce fertilizer usage. The present disclosure also proposes methods of treating plants using the engineered bacteria with agricultural biologics.

The invention discloses a polypeptide drug for resisting gram-negative bacteria and application, and belongs to the technical field of biological medicine. The MIC of the antibacterial peptide obtained through screening on escherichia coli, salmonella typhimurium, pseudomonas aeruginosa, klebsiella pneumoniae, shigella sonnei and stenotrophomonas maltophilia is 16 [mu] g / mL, 2 [mu] g / mL, 16 [mu] g / mL, 4 [mu] g / mL, 2 [mu] g / mL and 4 [mu] g / mL respectively, and the antibacterial peptide has broad-spectrum antibacterial performance. The hemolytic activity and toxicity of the compound are lower than therapeutic concentration threshold values, and the compound can be used for preparing drugs or medical products for treating multi-drug-resistant bacterium infection.

The invention relates to a microbial agent prepared based on a new strain of bacillus velezensis, which has the function of broad-spectrum antagonism of common pathogenic bacteria of aquatic products and can effectively prevent and / or treat bacterial diseases and / or fungal diseases of aquatic organisms including crustaceans and fishes. Meanwhile, the content of nitrite and ammonia nitrogen in aquaculture water can be effectively reduced, and the usage amount and residual quantity of antibiotics and chemical drugs in aquaculture are reduced.

To provide a novel pest control agent composition, particularly a bactericidal composition.SOLUTION: A bactericidal or bacteriostatic composition comprising an active ingredient A selected from pyrazole compounds or salts thereof represented by formula (I): [G represents G-1; G1 represents C1-C6 haloalkyl or the like; T represents an oxygen atom or the like; RX represents C1-C6 alkyl or the like; RY represents a hydrogen atom or the like; R1 represents a hydrogen atom or the like; R2 represents a hydrogen atom or the like; R3 represents a hydrogen atom or the like; Ra represents a hydrogen atom or the like; Z represents Z-1 or the like; Z1 represents C1-C6 alkyl or the like; m5 and n5 each represent an integer of 0, 1, 2, 3, 4, or 5; and p represents an integer of 0 or 1] and an active ingredient B selected from known bactericidal or bacteriostatic compounds.SELECTED DRAWING: None

The invention discloses actinomucor elegans EM-27, a microbial agent and application, and belongs to the technical field of microbial application. The strain is preserved in China General Microbiological Culture Collection Center (CGMCC) on April 24, 2025, the preservation address is No.3, No.1 yard, Beichen West Road, Chaoyang District, Beijing, and the preservation number is CGMCC NO.41924. According to the invention, an actinomucor elegans strain is separated from wheat rhizosphere, and antagonism experiments find that 8.7% of rhizosphere bacteria have antagonism on the actinomucor elegans, and 91.3% of rhizosphere bacteria and actinomucor elegans can coexist. And by applying actinomucor elegans, the growth and development of wheat can be obviously promoted. Therefore, the actinomucor elegans has a good application prospect in the aspect of improving plant growth and development.

The invention discloses a sweet persimmon grafting planting method, which belongs to the technical field of sweet persimmon grafting, and performs grafting planting on sweet persimmons through the steps of scion collection and treatment, rootstock selection and treatment, grafting, transplanting, later-stage management and protection and the like. And a healing-promoting bandage capable of promoting healing of the graft union and preventing infection of the graft union is prepared to bind the graft union and guarantee good conditions for healing of the graft union, so that the grafting survival rate of the sweet persimmons is guaranteed, good growth of grafted seedlings in the later period is promoted, development of the sweet persimmon industry is promoted, and good application prospects are achieved.

The invention relates to the technical field of biomedical materials, in particular to a metal-loaded antibacterial agent and a preparation method thereof.The preparation method comprises the following steps that a metal precursor is loaded to the surface of a carrier, and then washing and drying are conducted; and carrying out mechanical ball milling on the dried sample by using a planetary ball mill, carrying out in-situ roasting in the mechanical ball milling process, cooling to room temperature, washing with water, and drying to obtain the metal-loaded antibacterial agent. According to the preparation method, the regulation and control on the interaction between the metal and the carrier can be realized by utilizing mechanical ball milling, the interaction between the metal and the carrier in the prepared antibacterial agent is stronger than that of a sample prepared by an impregnation method, and the regulation and control on the interaction between the metal and the carrier can be realized by changing parameters of a ball milling process; and meanwhile, by regulating and controlling the interaction strength of the'metal-carrier ', the controllable slow release of metal ions can be realized, the antibacterial effect is ensured, and the action duration of the medicine is prolonged.

The invention discloses application of a small molecule compound in prevention and treatment of plant RNA virus infection, and belongs to the technical field of biology. According to the invention, 2 '-amino-2'-deoxyguanosine (ADG) is used as a unique antiviral active component to be applied to prevention and treatment of plant RNA viruses for the first time, and broad-spectrum inhibition of various plant RNA viruses such as turnip mosaic virus (TuMV), tomato mosaic virus (ToMV) and tobacco mosaic virus (TMV) can be realized only by a low concentration of 250 [mu] M and a simple exogenous spraying mode; and after spraying, the normal growth of plants is not influenced, the risk of phytotoxicity is thoroughly avoided, the safety, high efficiency and broad spectrum of plant RNA virus prevention and control are remarkably improved, and important practical application significance is achieved for guaranteeing the yield and quality of crops in agricultural production and promoting agricultural green transformation.

The invention discloses a dual-mechanism antibacterial photosensitizer as well as a preparation method and application thereof, and relates to the technical field of biomedical photoelectric functional materials. The invention relates to a triphenylamine derivative, which can realize fluorescence imaging of bacterial or fungal infection by utilizing fluorescence characteristics, can generate active oxygen under illumination to play a photodynamic therapy role, is suitable for preparing photodynamic therapy preparations and developing antibacterial materials, and can also be applied to the fields of environment and public health and tumor treatment. The problems that an existing photosensitizer is insufficient in broad spectrum, different in fungus drug resistance mechanism, limited in single treatment effect and the like can be effectively solved, and the photosensitizer has wide application prospects.

The invention discloses an algicidal bacterium and application thereof, the algicidal bacterium is named as Bacillus sp.L1.3, and is preserved in China Center for Type Culture Collection on March 31, 2025, the preservation address is Wuhan University, Wuhan, China, and the preservation number is CCTCC NO: M 2025629. The nucleotide sequence of the 16S rRNA gene of the strain is as shown in SEQ ID NO: 1. The invention also provides application of the algicidal bacteria in treatment of water bloom of freshwater cyanobacteria, and the freshwater cyanobacteria is microcystis aeruginosa. Fermentation liquor of the strain L1.3 has a strong inhibition effect on growth of microcystis aeruginosa, secretions of the strain L1.3 can destroy cell walls, cell membranes, thylakoid and other structures of algae cells, inhibit photosynthesis of algae and cause irreversible damage to the algae, and the strain L1.3 has wide-range temperature stability and can be used for preparing the microcystis aeruginosa strain L1.3. The bacterial strain is suitable for being prepared into an algicidal bacterial agent to be applied to the field of biological control of freshwater cyanobacterial bloom.