1418 results about "Bacterial strain" patented technology

The invention relates to ice wine yeast with high fermentation activity and outstanding aroma-producing characteristics and application thereof. The ice wine yeast is yeast (Saccharomyces cerevisiae) YSL16010, and the bacterial strain has been preserved in China General Microbiological Culture Collection Center on April 18, 2016, with a preservation number of CGMCC No.12349. The bacterial strain YSL16010 is obtained by separating and screening Vidal grapes from a Huanren producing area of Liaoning at a temperature of 16 DEG C in a natural fermentation process, and the ice wine wine-making yeast having good making characteristics and highly producing esters is obtained through a series of screening and identifications and small pilot scale fermentation. The ice wine wine-making yeast YSL1610 highly producing esters is used for fermenting and producing ice wine, so that the yield of volatile acid is effectively controlled while the standards of the grape wine producing countries can be met, and therefore, the content of aromatic compounds such as esters is remarkably increased. The bacterial strain can be applied to ice wine brewing industry, and can play an important role in improving the quality of the ice wine and bringing advantages of the grape producing areas into play.

The invention belongs to the technical field of microbial fermentation, and particularly relates to a plant lactobacillus XD117, application of the plant lactobacillus XD117 in fermentation of astragalus membranaceus, an astragalus membranaceus fermentation product and a preparation method of the astragalus membranaceus fermentation product. The bacterial strain is lactobacillus plantarum XD117 and is preserved in the China Center for Type Culture Collection, and the preservation number of the bacterial strain is CCTCC NO: M 20241730. The preparation method of the astragalus mongholicus fermentation product comprises the following steps: inoculating the lactobacillus plantarum XD117 into astragalus mongholicus enzymatic hydrolysate, and fermenting in a fermentation temperature range suitable for the lactobacillus plantarum XD117 to obtain the astragalus mongholicus fermentation product. The total content of calycosin, formononetin, calycosin glucoside and formononin in the astragalus mongholicus fermentation product is high, and the astragalus mongholicus fermentation product has a very good antioxidant effect.

The invention belongs to the technical field of agricultural sensing data management and control, and particularly relates to a vision-based multi-modal data fusion intelligent monitoring culture method and system, and the method comprises the steps: obtaining the growth image data and environmental parameter data of a strain based on a multi-sensor information source; identifying the growth image data through a deep learning algorithm, and outputting an image identification result; performing fusion processing on the image recognition result and the environment parameter data through a multi-data fusion algorithm to generate a comprehensive environment evaluation index; importing the comprehensive environment evaluation index and the abnormal state information into a growth environment control model, generating an environment regulation and control instruction conforming to a preset strain growth index, and executing the environment regulation and control instruction through an environment regulation and control module; the system can be used for realizing comprehensive environment monitoring, accurately evaluating the strain growth environment condition, and avoiding errors and one-sidedness caused by a single data source, so that culture environment parameters are dynamically adjusted.

The invention discloses a microbial fermentation strain breeding control system based on a neural network model, and relates to the technical field of digital fermentation, and the system comprises a thallus data acquisition module, a biological feature recognition module, a prediction classification module, a breeding decision module, an optimization training module, an early warning monitoring module and a sorting regulation module. The bacterial data acquisition module preprocesses bacterial data; the biological feature recognition module constructs a bacterial feature library; the prediction classification module predicts the adaptability of bacterial strains and classifies the bacterial strains; the selection decision module selects the bacterial strains and generates culture parameters; the sorting regulation and control module generates a three-dimensional scatter diagram and a hereditary character report. According to the method, the precision and efficiency of breeding of the microbial fermentation strain are remarkably improved, intelligence and automation of the breeding process are achieved, the labor cost is reduced, the stability and controllability of the fermentation process are enhanced, and powerful technical support is provided for innovative development of the microbial fermentation industry.

The invention belongs to the technical field of preparation of microorganisms and cosmetics, and particularly relates to a strain composition, radix paeoniae rubra fermentation liquor prepared from the strain composition and application of the strain composition in cosmetics. Specifically, Pseudoalteromonas sp. SE9 and Schizoscharomyces pombe JM2-16 are utilized to perform fermentation treatment on radix paeoniae rubra root powder, and the finally obtained radix paeoniae rubra fermentation liquor has multiple effects of resisting oxidation, promoting proliferation and migration of keratinocytes, promoting skin injury repair, resisting allergy, resisting inflammation, relieving and the like, is high in safety, can be used as a cosmetic component, and can be used as a cosmetic preparation. Therefore, the method has good practical application value.

The invention discloses a broad-spectrum biocontrol strain water bacillus barren ZG18 and application thereof, and belongs to the technical field of plant disease control, and the broad-spectrum biocontrol strain water bacillus barren ZG18 is characterized in that the water bacillus barren ZG18 is water bacillus barren and is preserved in the China General Microbiological Culture Collection Center, and the preservation number of the water bacillus barren ZG18 is CGMCC (China General Microbiological Culture Collection Center). The preservation address is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing, China; the preservation date is September 6, 2024; the preservation number is CGMCC (China General Microbiological Culture Collection Center) The biocontrol bacterium strain disclosed by the invention has a relatively strong inhibition effect on pathogenic fusarium sporotrichum, fusarium graminearum, botrytis cinerea, rhizoctonia solani and corticosis cucurbitae, the prevention and treatment effect of the strain ZG18 on tobacco target leaf spot reaches up to 51.34%, the prevention and treatment effect of the strain ZG18 on tobacco damping-off in a pot experiment is 65.91%, and the strain ZG18 has a promoting effect on tobacco growth.

The invention belongs to the technical field of plant disease control, and particularly relates to bacillus velezensis and application thereof. The bacillus velezensis strain is separated and screened from rhizosphere soil of wheat in a main wheat area in Hebei Province, the growth characteristics and physiological and biochemical characteristics of the bacterial colony are identified, then 16S rDNA sequencing is carried out, Blast homology comparison is carried out in a GenBank database, the bacterial strain is identified to be bacillus velezensis through the analysis, and the bacillus velezensis strain is identified to be bacillus velezensis. The fungicide containing the bacillus velezensis has a good prevention and treatment effect on wheat stem rot through seed coating.

The invention discloses lactococcus gasseri C6a2 and application thereof. The preservation number of the lactococcus gasseri C6a2 is CGMCC (China General Microbiological Culture Collection Center) NO: 31024; the 16S rRNA (ribosomal Ribonucleic Acid) gene sequence of the lactococcus gasseri C6a2 is as shown in SEQ ID NO: 1. The bacterial strain is a macrobrachium rosenbergii intestinal absolute dominant bacterium, has a typical probiotic function, is high in growth speed and activity, can quickly enter a logarithmic phase, has relatively high acid production and acid resistance, can secrete lipase, has relatively high bacteriostatic activity on staphylococcus aureus, aeromonas hydrophila and aeromonas veronii, and can be used for preparing the macrobrachium rosenbergii. The bacterium can be used for preparing a special probiotic preparation for macrobrachium rosenbergii, so that the sustainable development of the macrobrachium rosenbergii industry in China is promoted.

The invention relates to a bifidobacterium animalis subsp. Lactis YYSJ001 with a blood sugar reducing effect and application of the bifidobacterium animalis subsp. Lactis YYSJ001. The classification name of the strain is bifidobacterium animalis subsp. Lactis, and the preservation number is CGMCC (China General Microbiological Culture Collection Center) No.33471. The invention further relates to a preparation method of the bifidobacterium animalis subsp. Lactis YYSJ001. The bacterial strain has good artificial gastric juice resistance, artificial intestinal juice resistance and intestinal tract adhesion ability, has an inhibition effect on numerous pathogenic bacteria such as escherichia coli, staphylococcus aureus, salmonella, klebsiella pneumoniae and quail chicken enterococcus, and can stimulate intestinal cells to generate glucagon-like peptide-1, so that the bacterial strain can be applied to preparation of various pathogenic bacteria. Diseases of diabetic mice can be effectively improved, and the compound can be used for preparing products for preventing and treating diabetes or assisting in reducing blood sugar.

The invention belongs to the technical field of microorganisms, and particularly relates to a lactobacillus polyactis composition for improving skin as well as a derivative and application of the lactobacillus polyactis composition. The composition comprises a bacterial strain, a pure culture or an inactivated bacterium body of bifidobacterium bifidum Bbifid-1 (CCTCC NO: M2023349), bifidobacterium adolescentis Badol-1 (CCTCC NO: M 20242593), phytobacterium plantarum Lplan-4 (CCTCC NO: M 20242594) and lactobacillus acidophilus (BA05). The invention further relates to a preparation method of the composition. The lactobacillus plantarum derivative composition prepared through treatment modes of splitting decomposition, extraction, fermentation and the like can be used as an active ingredient of a medicine or a cosmetic, has remarkable effects of resisting oxidation and bacteria, especially resisting inflammation and inhibiting skin lipid accumulation aiming at propionibacterium acnes and staphylococcus aureus, is beneficial to fading skin red and swollen, avoids hair follicle blockage, and has a good application prospect. The obvious effect on the acne is realized.

The preservation number of the bacterial strain is CGMCC (China General Microbiological Culture Collection Center) NO.33629, the preservation date of the bacterial strain is February 24, 2025, the preservation classification of the bacterial strain is Lactobacillus sakei, and the preservation unit of the bacterial strain is China General Microbiological Culture Collection Center. The strain provided by the invention can reduce the concentration of blood uric acid, relieve kidney inflammation caused by hyperuricemia, improve the protein level of a kidney uric acid excretion channel and reduce the expression level of uric acid resorption protein.

The invention discloses a method for regulating the transport activity of a strain to 1-aminocyclopropane-1-carboxylic acid, and relates to the technical field of bioengineering. The method for regulating and controlling the transport activity of the strain to 1-aminocyclopropane-1-carboxylic acid and / or methionine analogues and the tolerance of the strain to the 1-aminocyclopropane-1-carboxylic acid and / or methionine analogues, disclosed by the invention, comprises the step of transferring a LeuE gene into escherichia coli to obtain an escherichia coli recombinant strain with corresponding functions. The invention discloses the application of the LeuE protein and the LeuE gene in regulating and controlling the transport activity of escherichia coli to the 1-aminocyclopropane-1-carboxylic acid and / or methionine analogue and the tolerance of escherichia coli to the 1-aminocyclopropane-1-carboxylic acid and / or methionine analogue for the first time. The invention discloses that LeuE is an optimal candidate gene for constructing ACC synthetic bacteria for the first time, and the substrate specific transport of the LeuE meets the aim of enhancing the ACC tolerance of cells without influencing precursor supply.

The invention relates to bifidobacterium animalis subsp. Lactis C-2 with an effect of improving inflammatory bowel diseases and application of the bifidobacterium animalis subsp. Lactis C-2. The bifidobacterium animalis subsp. Lactis C-2 is classified and named as Bifidobacterium animalis subsp. Lactis, and the preservation number of the bifidobacterium animalis subsp. Lactis C-2 is GDMCC No: 65455. The bacterial strain can inhibit the colonization of harmful bacteria and promote the colonization of beneficial bacteria and optimize the composition of intestinal microorganisms by regulating the intestinal microecology, repairing the intestinal mechanical barrier, improving the intestinal immune response, inhibiting oxidative stress reaction and other action mechanisms, thereby inducing anti-inflammatory response and improving the intestinal barrier function. Therefore, the bifidobacterium animalis subsp. Lactis C-2 strain is suitable for preparing the medicine with the effect of preventing, improving or treating the inflammatory bowel disease.

The invention discloses a strain copyright protection system based on a DNA watermark technology. The system comprises a DNA watermark embedding module, a block chain storage and verification module, a strain authentication and tracking module and a security and privacy protection module. The invention further discloses a strain copyright protection method based on the DNA watermarking technology. The method comprises the steps of strain copyright information generation and coding, DNA watermark site selection and editing, strain screening and verification, copyright information uplink and strain use and tracking. According to the method, the copyright information of the strain is coded into the DNA watermark, the DNA watermark is embedded into the genome non-functional region of the strain, and the copyright information is stored and verified in combination with a block chain technology, so that intellectual property protection with high concealment and high safety of the biological strain is realized; illegal copying and tampering of strains are prevented, reliable copyright authentication and tracking functions are provided, and the method has wide application prospects and remarkable market value.

The invention discloses a bacterial strain for degrading aspartame, a bacterial-algae symbiotic system and application of the bacterial strain and the bacterial-algae symbiotic system, the bacterial strain is corn sphingomonas zeae NCU J1, and the preservation number of the bacterial strain is CCTCC (China Center for Type Culture Collection) NO: M 20251462. And an algal-bacterial symbiotic system is constructed by adopting an oriented symbiotic combination of the corn sphingomonas NCU J1 and the chlorella sp. The corn sphingomonas NCU J1 can metabolize an artificial sweetening agent aspartame and degradation products thereof, metabolism complementation can be achieved through an algal-bacterial symbiotic interface, and bacteria preferentially promote aspartame to be subjected to photohydrolysis to generate degradation products such as diketopiperazine derivatives. The microalgae synchronously start isomerism enzymatic reaction to convert degradation products such as diketopiperazine derivatives into low-toxicity products, the risk of secondary pollution is reduced by 40% or above compared with that of a traditional physical and chemical method, 150 mg / L aspartame can be efficiently degraded within 2 days, generation of derivatives of aspartame can be greatly reduced, secondary pollution is reduced, and the method is suitable for industrial production. And the method has a good application prospect in the aspect of rapidly treating aspartame-containing wastewater.

The invention discloses propionibacterium capable of obtaining high-yield propionic acid through compound mutation screening and a method for fermenting propionic acid by using the propionibacterium. The high-yield propionic acid strain YCBS010 (CGMCC No.31160) is obtained by carrying out compound mutagenesis on acid-producing propionibacterium CGMCC 1.2232 serving as an original strain through microwave-ultrasonic combined mutagenesis and compound normal-pressure and room-temperature plasma (ARTP) mutagenesis means. According to the invention, YPA15 is used as a starting strain, microwave and ultrasonic combined mutagenesis is carried out for 100 seconds to screen a bacterial strain with increased propionic acid yield, then ARTP mutagenesis is carried out for 90 seconds to screen out a high-yield mutant strain YCBS010, fermentation in a 1-ton tank verifies that the highest propionic acid yield reaches 65.87 g / L and the fermentation intensity is 0.73 g / L.h after fermentation is carried out for 90 hours, and the bacterial strain has better industrial fermentation potential.

The invention relates to the field of fermentation processes, in particular to a method for preparing 1, 4-butanediol through multi-strain synergistic fermentation, which comprises the following steps: inoculating a first strain and a second strain into a culture medium containing glucose and / or xylose for synergistic fermentation, producing ornithine by the first strain by taking glucose and / or xylose as a substrate, and converting ornithine into 1, 4-butanediol by the second strain. The invention discloses 1, 4-butanediol. Glucose is converted into ornithine through the first strain, ornithine is converted into 1, 4-butanediol through the second strain, the first strain and the second strain are subjected to synergistic fermentation, preparation of 1, 4-butanediol through microbial synergistic fermentation is achieved, and higher metabolic capacity and higher production efficiency are achieved. The mixed sugar of xylose and glucose prepared from biomass raw materials is used as a substrate for fermentation, so that the method has the advantages that the raw materials are easy to obtain, renewable and low in cost, and the production cost can be reduced.

The invention discloses fermented shrimp paste and a bacterial strain used by the same. The strain for fermenting the shrimp paste is at least one of aspergillus, aspergillus niger, mucor and / or rhizopus oryzae. The fermented shrimp paste has excellent indexes such as amino nitrogen, volatile basic nitrogen, flavor, color and the like.

The present invention discloses a composite conditioner for repairing acidified soil and a preparation method thereof, and belongs to the technical field of acidified soil repair. The present invention prepares a carrier for loading bacterial strains by mixing and calcining steel slag, straw and kaolin, and then loads the embedded bacterial strains in the carrier to prepare a soil conditioner, which can efficiently repair acidic soil and provide sufficient nutrients for the soil; the soil conditioner provided by the present invention can adjust the release rate according to the pH value of the acidic soil to be repaired, and can reduce the amount of the soil conditioner on the basis of improving the repair effect; the soil conditioner provided by the present invention has high stability and obvious slow-release effect; the raw materials used in the present invention are simple and easy to obtain, the preparation process is simple, and it is suitable for large-scale promotion and application.

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.

The invention relates to the field of biological engineering and technology, in particular to an enzyme for synthesizing glabridin, a biological synthesis method of glabridin and a bacterial strain. The invention discloses a series of glabridin synthesizing enzymes (phenylalanine ammonialyase, cinnamic acid-4-hydrogenase, tyrosine ammonialyase, p-coumaric acid coenzyme A ligase, chalcone synthase, chalcone reductase, chalcone isomerase, isoflavone synthase, 2-hydroxyisoflavone dehydratase, 4 '-oxymethyltransferase, 4'-hydroxymethyltransferase and 4 '-hydroxymethyltransferase) derived from glycyrrhiza glabra for the first time. ) can be used in the preparation of a compound (e.g., isoflavone 2 '-hydrogenase, isoflavone reductase, Vissisoketoreductase, isoprenyltransferase, pterocarpin reductase, oxidative cyclase, demethylase, cytochrome P450 reductase, and the like). The de novo synthesis of the glabridin in a microbial cell factory is realized for the first time, and the application prospect of the glabridin biological manufacturing industry is greatly promoted.

The invention relates to a decomposition-promoting phosphorus-dissolving deodorizing microbial agent for composting and a preparation method and application thereof, and belongs to the technical field of biological agriculture and related industries. The microbial agent is prepared from the following bacterial strains: bacillus licheniformis DY-1, paenibacillus zerzeri C-A and bacillus chestnut brown SC in a mass ratio of 1.5: (1-3): (1.5-4). The viable count of each strain is greater than or equal to 5 * 10 < 8 > CFU / g; the total viable count of the microbial inoculum is greater than or equal to 1 * 10 < 9 > CFU / g. The preparation method comprises the following steps: (1) strain activation; (2) strain amplification culture; (3) bacterial powder preparation; and (4) strain compounding. The invention relates to application in clean composting of organic wastes. The invention has the following advantages: the three strains in the microbial inoculum do not generate antagonism, and can obviously accelerate the conversion of insoluble phosphorus, promote decomposition and improve the effect of removing NH3 and H2S.

The present invention provides a new bacterial strain of the genus Variovorax capable of oxidising elemental sulphur, generating sulphate. When added to a soil, the bacterium can transform the elemental sulphur present into sulphate, the main soluble form of sulphur that can be absorbed by roots, providing plants with more sulphur available for their metabolic needs, stimulating their growth, and the yield of their crops. The use of the bacterium is proposed, optionally with added elemental sulphur, to stimulate plant growth and / or to act as a biostimulant for plants, as well as to modify or restore soils, especially alkaline, limestone, or saline soils, since the activity of the bacterium generates a reduction in pH, enrichment with sulphates, structural modifications, an increase in porosity, solubilisation of phosphorus salts, and other modifications.

The invention relates to the technical field of crop straw treatment and soil improvement, in particular to a rice straw returning method for improving soil fertility, which mainly comprises the following steps: crushing rice straws, soaking with a sodium hydroxide solution, and drying; then selecting specific strains, mixing and fermenting to prepare a microbial agent; preparing a composite additive in proportion; within 1-2 days after the rice is harvested, the pretreated straw, the microbial agent and the composite additive are applied to the field, deep ploughing is conducted, and irrigation is conducted; and finally, performing rotary tillage and soil preparation after straw decomposition, and monitoring and adjusting the pH value of the soil when next-stubble crops are planted. According to the method, straw is pretreated, lignin is destroyed through a sodium hydroxide solution, the particle size is accurately controlled, drying is conducted in cooperation, the microbial decomposition efficiency is improved, straw and soil are fully mixed through accurate ploughing in the field, decomposition is accelerated into nutrients, the straw can be powerfully decomposed through a microbial agent, and the soil micro-ecology is improved; the composite additive supplements various nutrients and enhances the water and fertilizer retention capability of soil.

The invention discloses a Vinck Cellulomicrobe and application thereof in degradation of corn straw and improvement of soil fertility, and belongs to the field of agricultural microbial technology and solid waste resource utilization. The bacterial strain can secrete a plurality of hydrolase and oxidase including AA10 family lytic polysaccharide monooxygenase, AA2 peroxidase, GH3 and GH1 beta-glucosidase, GH16 / GH17 beta-glucosan endonuclease and AA1 multi-copper oxidase. The bacterial strain has the advantages that the bacterial strain can secrete a plurality of hydrolase and oxidase; fermentation liquor is applied to soil according to the straw mass ratio of 1: 5, and the corn straw degradation rate can be increased under the condition that the mass ratio of soil to straw is 100: 1. Meanwhile, the microbial agent can synergistically improve soil nutrients and increase the contents of rapidly available phosphorus, rapidly available potassium, alkali-hydrolyzable nitrogen, soluble organic carbon and total phosphorus in soil. According to the microbial agent, a straw lignocellulose structure is effectively cracked through a multi-enzyme system synergistic effect, and the dual effects of accelerating straw degradation and improving soil fertility are achieved.

The invention discloses a fermentation preparation process for reducing cold and cool characteristics of fructus forsythiae tea. The fermentation preparation process comprises the following steps: performing early-stage treatment of screening, weighing, cleaning, high-temperature softening, rolling and high-temperature steam sterilization on fructus forsythiae leaves; compounding lactobacillus plantarum and German-style lactobacillus bulgaricus to obtain a mixed strain, adding the mixed strain into the treated fructus forsythiae leaves, and putting into a fermentation box for solid-state fermentation; under a sterile condition, adding a fermentation strain of pichia guilliermondii BC 621 into the fructus forsythiae leaves subjected to solid-state fermentation, and putting into a fermentation box for secondary fermentation; and drying the fructus forsythiae leaves subjected to secondary fermentation until the water content is below 6%. Active components reflecting cold and cool characteristics in the fructus forsythiae tea prepared by the method are obviously reduced, the fructus forsythiae tea is also suitable for people with deficiency-cold spleen and stomach and deficiency-cold constitution to drink, and audiences are expanded.

The invention provides a method for improving maturity of a cigar coating, a product thereof and application of the product. The method comprises the following steps: carrying out infiltration and humidification, hanging rod balancing, vacuum pressure maintaining and humidification and microbial agent fermentation treatment on the cigar coating of a supplied material; the bacterial strains in the microbial inoculum comprise a combination of a brachybacterium paragglutinum HB001 bacterial strain with the preservation number of GDMCC No: 63066 and an agrobacterium przewalskii HB002 bacterial strain with the preservation number of GDMCC No: 63067. According to the method, the cigar coating is treated by adopting a specific treatment process, so that fence tissues and cell walls of the tobacco leaves are effectively damaged, the tobacco leaf tissues are loosened, and the chlorophyll content in the tobacco leaves is reduced, thereby effectively improving the conditions of greenness, stiffness and the like of the cigar coating and improving the quality of the tobacco leaves.

The invention discloses a bacillus velezensis strain and an application thereof in agriculture. The bacillus velezensis QK-4 is obtained through screening, the bacterial strain is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number of the bacterial strain is CGMCC NO.32225. The bacillus velezensis QK-4 is a bacillus velezensis QK-4 strain, and the preservation number of the bacillus velezensis QK-4 strain is CGMCC NO.32225. The bacillus velezensis QK-4 strain is a bacillus velezensis QK-4 strain. The bacillus velezensis disclosed by the invention has relatively strong saline-alkaline resistance, can keep relatively high activity in a saline-alkaline environment, and can effectively convert phosphorus in a fixed state of soil into phosphorus which can be utilized by plants, so that the phosphorus nutritional condition of the soil is improved, the phosphorus utilization rate of crops is increased, the salinization of the soil is improved, and the soil quality is improved. Growth of crops in saline-alkali soil is promoted and crop yield is increased. Meanwhile, the strain has an obvious inhibition effect on diseases caused by various pathogenic fungi and can be used for preventing and treating various plant diseases.

The present invention relates to the field of microbial technology, and in particular to a Velez bacillus HF01 and its application; Velez bacillus HF01 has been deposited as a patented strain in the General Microbiological Center of China Microbiological Culture Collection Administration Committee, with a deposit number of CGMCC NO: 33137. The strain has a significant effect in preventing and treating wax gourd damping-off disease caused by plant pathogens; it has a good inhibitory effect on wax gourd damping-off disease caused by Rhizoctonia solani, and can also promote the growth of wax gourd.

The invention belongs to the technical field of wastewater treatment, and particularly relates to an arsenic wastewater treatment agent, a preparation method, application and an arsenic wastewater treatment method.The arsenic wastewater treatment agent comprises a carrier and a bacterial suspension adsorbed and fixed to the carrier; the carrier is iron modified biochar; the bacterial strain in the bacterial suspension is bacillus subtilis W7, and the bacterial strain in the bacterial suspension is bacillus subtilis W7. The bacterium-carbon composite material prepared through freeze drying can be compatible with multifunctional additives (such as iron oxide), can quickly activate the metabolic activity of strains through rehydration, and is suitable for groundwater remediation or industrial prefabricated remediation agent production with large temperature difference and high storage requirements.