621 results about "Bacillus <bacterium>" patented technology

The invention discloses a microbial agent for preventing and treating soil-borne diseases of food crops and a preparation method of the microbial agent, and belongs to the technical field of microorganisms. The microbial inoculum comprises three functional strains, namely pseudomonas guayensis, paenibacillus polymyxa and trichoderma koningiopsis, the three strains are mixed in equal proportion and cooperate with one another, so that the microbial inoculum has a remarkable disease-resistant effect, has an antagonistic effect on various diseases of wheat and corn, can be used for preventing and treating wheat root rot, take-all and banded sclerotial blight as well as corn stem rot and banded sclerotial blight, and has a wide application prospect. Particularly, the inhibition effect on the take-all disease of wheat is optimal. Meanwhile, the coating agent and the auxiliaries are used, so that the acting durability and stability of the microbial inoculum are improved. The microbial agent is matched with a conventional base fertilizer for use, use of chemical bactericides is reduced, growth of common pathogenic bacteria of food crops is effectively inhibited, and the yield of the food crops is increased.

The invention belongs to the technical field of soil fertilizers, and particularly relates to a soil conditioner and a preparation method thereof. Wherein the soil conditioner is prepared from the following raw materials in parts by weight: 30 to 40 parts of modified charcoal, 20 to 30 parts of microbial complexing agent, 15 to 25 parts of humic acid and 1 to 5 parts of biological enzyme; according to the microbial complexing agent, dopamine grafted and modified nano silicon dioxide and hydroxyapatite form a composite shell, pseudomonas aeruginosa and bacillus subtilis are wrapped, and the microbial complexing agent has the functions of protecting microorganisms, adsorbing heavy metals and slowly releasing phosphorus elements; the modified biochar is compounded with the attapulgite through acid-base treatment to form a porous structure with physical inlaying and chemical functional groups synergistic, so that the adsorption and fixation capability on heavy metals and organic pollutants is remarkably improved; the biological enzyme accelerates organic phosphorus conversion, and enzymatic hydrolysate provides a phosphorus source for microorganisms, promotes microorganism breeding, effectively increases the content of available phosphorus in soil, and enhances the stability of a remediation system.

The invention relates to the technical field of agricultural fertilizers, discloses a seaweed extract-functional microorganism compound slow-release fertilizer and a preparation method thereof, and solves the problems in the background art. The seaweed extract is a compound containing enteromorpha polysaccharide and alginic acid extract; the functional microorganism is a complex microbial inoculant composed of phosphate solubilizing bacteria, nitrogen-fixing bacteria, phosphate solubilizing bacteria and bacillus; the slow-release carrier is prepared by coating the seaweed extract and the functional microorganisms with sodium alginate-chitosan microcapsules; the signal molecule is selected from at least one of polyamine substances and jasmonic acid methyl ester; the fertilizer has the advantages that the utilization rate of the fertilizer can be increased, growth and reproduction of soil microorganisms are promoted, the stress resistance of crops is improved, and the requirements of different soil types and planting environments can be met.

The invention belongs to the technical field of agriculture, and particularly provides a compound microbial agent and application thereof. The compound microbial agent is prepared from bacillus velezensis RKN1111, bacillus subtilis N-3 and paenibacillus mucilaginosus HX-02, and the compound microbial agent is prepared from bacillus velezensis RKN1111, bacillus subtilis N-3 and paenibacillus mucilaginosus HX-02, and the compound microbial agent is prepared from bacillus velezensis RKN1111, bacillus subtilis N-3 and paenibacillus mucilaginosus HX-02. The compound microbial agent can effectively improve the pH and EC of saline alkali soil, increase the content of alkali-hydrolyzable nitrogen, available phosphorus and quick-acting potassium in the soil, and play a significant role in increasing the plant height, stem diameter, chlorophyll content and aboveground biomass of corn plants in coastal saline-alkali soil.

The invention discloses a plant-microorganism combined uranium pollution treatment method which comprises the following steps: planting seeds of disinfected uranium-tolerant plants into soil to be remediated, and applying a bacterial suspension of uranium-tolerant strains, namely rhodotorula M1, aspergillus M2 and bacillus M3, into the soil to be remediated, so that the uranium enrichment capacity of the uranium-tolerant plants is remarkably improved; and a relatively good effect of repairing the uranium-polluted soil in the medium-temperature climate region is achieved. Uranium-tolerant plants can be harvested manually or mechanically and transferred to a safe place in a centralized manner to be treated, so that uranium-contaminated soil in the medium-temperature climate zone is effectively repaired.

Methods are provided for enhancing the health, growth and / or sturdiness of turf grasses by applying a combination of microbes and / or their growth by-products to the turf grass roots and / or to soil. Specifically, in one embodiment, the subject invention utilizes Trichoderma harzianum and a strain of Bacillus amyloliquefaciens. The methods can further be used to improve maintenance and upkeep of natural turf grass fields used in, for example, athletics and recreation, as well as to increase the functionality and safety of these natural turf grass fields.

The invention relates to the technical field of new strains, and provides a new strain which is screened from Xinjiang saline-alkali soil, is classified and named as sphingomonas sp. And is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CGMCCNO.32220. Research finds that the strain can remarkably reduce the soil conductivity, the exchangeable sodium content, the alkalization degree and the total salt content, so that the soil quality is improved. The organic matter content and the acid phosphatase activity of the soil are remarkably improved, and the quality of the saline-alkali soil can be efficiently improved. Meanwhile, the invention provides a compound bacterial fertilizer for effectively improving saline-alkali soil, the compound bacterial fertilizer comprises bacillus subtilis, Exiguobacterium acetylbacter, Bacillus velezensis, Pseudomonas fluorescens, Rhodococcus capsulatus and a new strain Sphingomonas sp., and research finds that compared with a single bacterial solution, the compound bacterial solution has a more prominent remediation effect on saline-alkali soil.

The invention relates to a saline-alkaline tolerant microbial seed coating agent and application thereof. The seed coating agent comprises a growth-promoting rhizobacteria inoculant and an auxiliary agent, the volume ratio of the growth-promoting rhizobacteria inoculant to the auxiliary agent is 1: (1-100); in each gram of the seed coating agent, the viable count of the growth-promoting rhizosphere bacteria is (1-100) * 10 < 10 > CFU; the growth-promoting rhizobacteria is selected from one or more of pseudomonas stutzeri A1501, pseudomonas fluorescens ATCC 13525, bacillus amyloliquefaciens FZB42 and azotobacter chroococcum BNCC336703, and the growth-promoting rhizobacteria is selected from one or more of bacillus amyloliquefaciens FZB42 and azotobacter chroococcum BNCC336703; on the basis of the total weight of the auxiliary agent, the auxiliary agent is prepared from the following components in percentage by weight: 1 to 9 percent of film forming agent, 1 to 9 percent of protective agent, 0.0001 to 0.001 percent of regulator, 0.0001 to 0.001 percent of active agent, 0 to 25 percent of filler and 58 to 97 percent of water. The seed coating agent can improve the rhizosphere colonization ability and survival rate of rhizosphere growth-promoting bacteria, can also improve the saline-alkaline tolerance of plant seeds, and effectively promotes plant growth.

The invention belongs to the technical field of microorganisms, and particularly relates to bacillus amyloliquefaciens with high H2O2 yield and application of the bacillus amyloliquefaciens. According to the bacillus amyloliquefaciens C-50-11, H2O2 can be continuously generated in the high-temperature period of compost, H2O2 free radicals can oxidize and decompose complex organic matter to promote humus condensation in a mediated mode, the content of humus in the compost in the high-temperature period is further effectively increased, and compared with the content of humus in uninoculated compost, the content of the humus after inoculation is increased by 20% or above. According to the method disclosed by the invention, chemical degradation is realized by combining an endogenous H2O2 strengthening effect of thermophilic bacteria and utilizing an oxidizing agent generated by organisms, so that the condition of a high-temperature period of compost is fully utilized, and a new method way is provided for increasing the content of humus in the compost.

Provided are a method for controlling a soilborne disease in which a load on an environment and a human body is reduced, and a novel predatory bacterium therefor.　Provided are: a predatory bacterium or a variant thereof selected from the group consisting of bacteria of the genus Bacteriovorax and bacteria of the genus Bdellovibrio which selectively prey on a pathogenic bacterium belonging to the family Burkholderiaceae, the family Pectobacteriaceae, or the family Lysobacteraceae; a method for controlling a soilborne plant disease caused by the pathogenic bacterium, the method characterized in that the predatory bacterium or variant thereof is applied to a seed, root, or underground stem of a plant, rhizosphere soil, or soil; and a composition.

The invention discloses a special fertilizer composition for high-yield cultivation of sugarcane, and belongs to the technical field of sugarcane planting. Comprising a disease-resistant fertilizer and an insect-resistant fertilizer; wherein the disease-resistant fertilizer comprises the following raw materials in parts by mass: 50 parts of diatomite, 5-10 parts of biomass charcoal, 1-2 parts of a compound microbial agent, 150-170 parts of an organic fertilizer and 50-60 parts of an inorganic fertilizer; wherein the compound microorganism bacterium agent comprises a bacillus subtilis bacterium agent, a trichoderma harzianum bacterium agent, a trichoderma viride bacterium agent and a paecilomyces lilacinus bacterium agent; the insect prevention fertilizer comprises beauveria bassiana suspension and matrine in a volume ratio of (3.5-4.5): 1. According to the fertilizer composition special for high-yield cultivation of sugarcane, the synergistic effect of microorganisms is utilized, the broad-spectrum inhibition effect on microorganisms in sugarcane continuous cropping disease soil can be achieved, the kieselguhr and the biomass charcoal cooperate to form a porous substance, nutrient elements are adsorbed in pores, the slow-release effect is improved, the fertilizer efficiency is prolonged, and the effect is good. Moreover, the soil structure can be improved, and the disease resistance of the sugarcane during continuous cropping is greatly improved through the synergistic interaction with the microbial complex microbial inoculants.

A preparation method of a rice straw biochar loaded with Bacillus cereus, comprising: (1) washing, drying, grinding and sieving rice straws; (2) performing anaerobic pyrolysis treatment on the rice straws treated in the step (1) at 300-700° C. to obtain a biochar; (3) treating the biochar obtained in the step (2) with hydrochloric acid, then washing until a washing solution is neutral, drying, grinding, sieving and sterilizing to obtain a sterilized biochar; and (4) performing mixed culture on the sterilized biochar and a solution of Bacillus cereus subjected to activation culture, and then centrifuging after the end of culture to remove supernatant, so as to obtain a rice straw biochar loaded with Bacillus cereus having a carbon immobilizing capability.

The invention relates to the field of environment, phosphorite resource utilization and agricultural biotechnology, in particular to a phosphate ore-containing phosphate-solubilizing bacterial agent, a preparation method thereof, a biological bacterial fertilizer and application, the phosphate ore-containing phosphate-solubilizing bacterial agent comprises phosphate-solubilizing bacteria, hydroxyapatite and a culture medium, and the phosphate-solubilizing bacteria are enterobacter hormaechei HS-6. The hydroxyapatite is used for preparing the phosphate ore-containing phosphate-solubilizing bacterial agent, so that the phosphate ore resource can be greatly promoted to be fully utilized, and the dissolution of insoluble phosphorus in the phosphate ore is realized. According to the phosphate-containing ore phosphate-solubilizing bacterial agent, the enterobacter hormaechei HS-6 is combined with the hydroxyapatite, so that the phosphate-solubilizing capacity of the enterobacter hormaechei HS-6 can be utilized, and the phosphorus resource of the hydroxyapatite can be fully utilized. The phosphate-containing ore phosphate-solubilizing bacterial agent has good prospects in application to preparation of biological bacterial fertilizer, application to agricultural soil improvement, application to phosphate ore resource recovery and application to promotion of wheat growth.

The invention relates to a lake sediment reduction bacterium which is classified and named as bacillus amyloliquefaciens WP02, the preservation number is CCTCC (China Center for Type Culture Collection) NO: M2020696, and the lake sediment reduction bacterium is preserved in the China Center for Type Culture Collection. The invention relates to an application of a lake sediment reduction bacterium in sediment denitrification, phosphorus uptake and quality degradation. The method has the beneficial effects that the immobilized microbial agent obtained by respectively embedding and adsorbing lake sediment reduction bacteria can effectively reduce sediment organic matters, reduce sediment total nitrogen and absorb phosphorus in overlying water, namely effectively perform denitrification, phosphorus absorption and quality degradation on the sediment, and the microbial agent can improve the oxidation reduction potential of the sediment and reduce the pollution of the sediment. And the method has important significance and application value in the aspect of maintaining the ecological balance of the water body, and has the characteristics of high in-situ remediation efficiency, small environmental disturbance and no secondary pollution compared with a physical and chemical remediation method.

The invention relates to the technical field of soil improvement, and discloses a soil improvement repairing agent and a preparation method thereof. The preparation method comprises the following steps: adding biochar, modified eugenol, modified benzothiazolyl pyridine, bacillus licheniformis and diatomite into a mixer, mixing and stirring, extruding and granulating in a granulator, and drying to obtain the soil improvement repairing agent. Eugenol can destroy a membrane structure and denature protein, so that a bacteriostatic effect is achieved, and a healthy soil microenvironment is provided for crops; the quaternary ammonium salt can destroy the membrane structure of pathogenic microorganisms, plays a role in killing the microorganisms, can improve the antibacterial effect of the remediation agent, and prevents and treats spread diseases of soil; nitrogen atoms and sulfur atoms in benzothiazolyl pyridine molecules can coordinate with free heavy metal ions in the soil, the heavy metal adsorption effect of the remediation agent is improved, the production value of the soil is gradually restored, meanwhile, boric acid capable of being absorbed by plants can be released through hydrolysis of pinacol ester, and the fertility of the soil is improved.

The invention discloses an extreme thermophilic charcoal complex microbial inoculant and application thereof in aerobic composting of pig manure, and belongs to the technical field of microorganisms. The invention firstly discloses a strain of thermophilic thermophilic bacteria N1209, and secondly discloses an extreme thermophilic biochar complex microbial inoculant, which comprises geobacillus thermoglucosidase BGSC 95A1, bacillus licheniformis ZR-1, the thermophilic thermophilic thermophilic bacteria N1209 and geobacillus stearothermophilus L5. The extremely thermophilic biochar complex microbial inoculant has the characteristic of high temperature resistance, compared with a single microbial inoculant, produced amylase, protease and lipase are higher in activity and show synergistic advantages, decomposition of pig manure can be remarkably promoted, the extremely thermophilic biochar complex microbial inoculant has advantages in the aspects of nitrogen element retention and CH4 and N2O emission reduction in the pig manure composting process, and the extremely thermophilic biochar complex microbial inoculant can be applied to the field of pig manure composting. And a new method is provided for treatment of livestock breeding wastes.

This invention discloses a method for remediating groundwater containing organic pollutants, comprising the following steps: 1) Extracting groundwater containing organic pollutants using multiple extraction pumps, adding ferrous salts at a solid-liquid ratio of 1:50-200, mixing thoroughly, and adjusting the pH of the system to 6-8 to obtain intermediate treatment solution one; 2) Adding a remediation agent to the obtained intermediate treatment solution one, mixing and stirring for 3-6 hours to obtain intermediate treatment solution two; 3) Passing the obtained intermediate treatment solution two sequentially into an anaerobic reactor and an aerobic tank for treatment, and discharging after reaching the required standards; the packing material of the anaerobic reactor contains microorganisms, including at least two or more of denitrifying bacteria, Bacillus coagulans, Bacillus subtilis, Bacillus clonorchis, Bacillus indusiata, and Serratia marcescens. The remediation method provided by this invention has high remediation efficiency, thorough removal of organic matter, and is economically feasible, with an organic matter removal rate of over 98%.

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.

The invention relates to a soil remediation complex microbial inoculant composition and a preparation method thereof, and belongs to the technical field of soil remediation. Comprising the following raw materials: 10-15 parts of a microbial complex inoculant, 40-50 parts of a porous carrier, 20-25 parts of an organic matter and 3-5 parts of a surface protective agent, wherein the porous carrier is obtained by treating diatomite with phytic acid and polylysine. Paenibacillus polymyxa, trichoderma harzianum, bacillus subtilis and azotobacter chroococcum are taken as a microbial compound inoculant, modified diatomite is taken as a porous carrier, and the microbial compound inoculant is mixed with organic matters under the action of a protective agent, so that the soil remediation compound inoculant composition which can effectively improve soil and is excellent in strain activity is obtained.

The invention discloses an environment-friendly bio-organic fertilizer for improving acidified soil and a preparation method of the environment-friendly bio-organic fertilizer, and belongs to the technical field of organic fertilizers. The bio-organic fertilizer is prepared from the following raw materials in parts by weight: 10-20 parts of a composite gel material, 80-100 parts of decomposed livestock and poultry manure, 10-20 parts of a microbial agent, 30-50 parts of modified waste tea biochar, 10-15 parts of urea, 5-10 parts of humic acid, 1-5 parts of calcium superphosphate and 1-5 parts of sodium carboxymethyl cellulose, the microbial agent is prepared by mixing bacillus pseudofirmus, pseudomonas oryzae and azotobacter beijerinckii according to the volume ratio of 1: 1: 1. The bio-organic fertilizer can remarkably improve the pH of soil and increase the content of organic matters in the soil, has good buffering capacity and long-term effect, enhances the water and fertilizer retention capacity of the soil, and has a remarkable effect of increasing both production and income of crops.

The invention provides mulberry enterobacter, a microbial agent as well as a preparation method and application of the microbial agent. The bacterial strain XJ 10 is classified and named as Enterobacter mori, and is preserved in the Guangdong Microbial Culture Collection Center on February 20, 2025, the preservation number is GDMCC No.65928, and the preservation date is February 20, 2025. The strain XJ 10 can tolerate cadmium-lead combined pollution, has the capabilities of fixing nitrogen, dissolving phosphorus and dissolving potassium, can promote residual cadmium and lead in soil to be converted into effective cadmium and lead, can promote absorption of enrichment plants or hyperaccumulator to cadmium and lead, and can improve the physicochemical properties of the soil at the same time.

The invention relates to the technical field of compound microbial fertilizers, in particular to a biochar-based compound microbial fertilizer for improving saline-alkali soil. The organic fertilizer comprises the following components in parts by weight: 30-50 parts of straws, 10-15 parts of compound microbial capsules, 20-40 parts of compost and 5-10 parts of humic acid. A multi-strain mixture composed of azotobacter chroococcum, pseudomonas and bacillus mucilaginosus is added, and comprehensive improvement of the saline-alkali soil is achieved; the azotobacter chroococcum can convert nitrogen in the air into nitrogen which can be utilized by plants, so that the dependence on chemical fertilizers is reduced; pseudomonas has efficient phosphate solubilizing capacity, and bacillus mucilaginosus can strongly solubilize potassium, so that the soil fertility is comprehensively improved. Composite microorganisms and polylactic acid are subjected to an interfacial polymerization reaction to prepare microcapsules, dopamine hydrochloride is utilized to form a coating on the surfaces of the microcapsules in a self-assembly mode, physical protection can be provided for the microorganisms, the survival rate of the microorganisms in a severe environment is increased, and the acting time of the microorganisms in soil is prolonged.

The invention belongs to the technical field of microorganisms, and discloses streptomycete Y309 and application thereof. The preservation number of the streptomyces sp. Y309 is GDMCC No: 64527, and the streptomyces sp. Y309 has relatively strong secondary metabolite synthesis capability and can be used for producing siderophore, IAA (Indoleacetic Acid) and the like. The strain Y309 also has the potential of plant growth promotion and disease control, and the strain Y309 has a relatively strong bacteriostatic effect on 12 pathogenic fungi such as fusarium oxysporum, rhizoctonia cerealis, monilinia fusarium and coracocystis fimbristipula as well as 7 pathogenic bacteria such as pseudomonas syringae lacrimation pathogenic variants and bacillus cereus, and has a relatively strong bacteriostatic effect on 12 pathogenic fungi such as fusarium oxysporum, rhizoctonia cerealis, monilinia fusarium and coracocystis fimbristipula. The strain Y309 has good prevention and treatment effects on wheat sharp eyespot, tomato gray mold and pepper fusarium wilt, fermentation liquor of the strain Y309 can remarkably promote wheat seed germination and seedling growth, agronomic characters such as the plant height, the dry weight and the leaf area in the corn seedling stage can be improved in different saline-alkali soil, and the strain Y309 has good application prospects.

The invention discloses bacillus orientalis ZL3 for regulating rhizosphere soil microecosystems of haloxylon ammodendron soil in deserts and promoting the growth of the haloxylon ammodendron soil, particularly relates to a fungicide ZL3 for promoting the growth of haloxylon ammodendron and regulating rhizosphere microbial communities and application of the fungicide ZL3, and belongs to the technical field of microorganisms. According to the bacillus toonensis ZL3 provided by the invention, the conversion of soil nutrients to available nutrients is improved, and the rhizosphere microbial community structure is improved, so that the effect of promoting the growth of haloxylon ammodendron is achieved. When the ZL3 is applied to a haloxylon ammodendron field, the content of soil organic matters, the content of soil quick-acting potassium, the content of available phosphorus and the activity of sucrase are remarkably improved by 37.78%, 11.01%, 49.66% and 67.71% respectively. The plant height is increased by 17.59%, and the root length is increased by 109.45%. Meanwhile, the positive change of microbial communities is regulated and controlled, especially the enrichment of beneficial bacteria, the relative abundance of the prevotella and the vibrio is remarkably increased, and the relative abundance of the burkholderia is remarkably reduced. In general, inoculation of the ZL3 fungicide can promote the growth and development of haloxylon ammodendron by improving the soil fertility and improving the rhizosphere microflora structure.

The invention provides a microbial agent capable of degrading lignin and application of the microbial agent in regulation and control of a soil organic carbon library, and relates to the technical field of microorganisms, the microbial agent contains at least two of serratia marcescens, ochrobactrum anthropi, pseudomonas asparagi or burkholderia terricola, and the microbial agent contains at least two of the serratia marcescens, the ochrobactrum anthropi, the pseudomonas asparagi and the burkholderia terricola. The serratia marcescens a26, the ochrobactrum anthropi b1, the pseudomonas asparagi b6 or the burkholderia terricola b21 have good lignin degradation capability, after compounding, the lignin degradation capability of the strain is further improved, and the strain can be used for degrading moso bamboo litters with high lignin content and promoting accumulation of a soil organic carbon library. The technical problem that a microbial agent with a function of efficiently degrading lignin is lacked in the prior art is solved.

The invention relates to the technical field of wastewater treatment microorganisms, in particular to an efficient compound microbial agent for municipal sewage treatment and application of the efficient compound microbial agent. The compound microbial agent is prepared from the following strains in percentage by mass: 22.5 to 24.3 percent of anaerobic rope bacteria, 10.5 to 13.1 percent of outer bacillus, 6.8 to 7.3 percent of brevibacillus, 3.1 to 4.3 percent of bacillus, 2.3 to 2.5 percent of enterobacter, 1.8 to 2.4 percent of hyphomonas, 2.1 to 2.5 percent of spirillum rot, 1.8 to 2.1 percent of coxiella and 16.8 to 18.2 percent of other bacteria. Aiming at the problems that the existing municipal sewage pollutant removal efficiency is low, and microorganisms are difficult to adapt to water quality fluctuation, the compound microbial agent can adapt to water quality and water quantity fluctuation, and the treatment effect is stable; the COD (Chemical Oxygen Demand) degradation and nitrogen and phosphorus removal capabilities are excellent, and the metabolic capability is strong.

The invention relates to the technical field of microorganisms, in particular to a compound induced antibacterial agent and a method for preventing and controlling tomato brown fruit wrinkling virus by using the compound induced antibacterial agent. The compound induced antibacterial agent comprises an agent A which is a prodigiosin-producing serratia marcescens liquid fungicide, an agent B which is bacillus velezensis water-soluble powder and an agent C which is isaria cicadae polysaccharide powder. The agent A is a red liquid fungicide prepared by utilizing serratia marcescens WF01, the agent B is a water-soluble powder fungicide prepared by utilizing bacillus velezensis WF02, and the agent C is isaria cicadae polysaccharide powder prepared by fermenting isaria cicadae WF05; the serratia marcescens and the bacillus velezensis can be efficiently colonized in the rhizosphere and the body of a plant, so that the serratia marcescens and the bacillus velezensis cooperate with isaria cicadae polysaccharide to improve the micro-ecological environment inside and outside a targeted plant, the plant system resistance is induced and activated, and the disease resistance and the stress resistance synergistic effect in the whole plant range are improved and activated; particularly, the effect on prevention and control of the tomato brown fruit wrinkling virus is achieved.

The invention provides a microbial agent for producing acid through fermentation of organic waste and application of the microbial agent, and relates to the technical field of biology, the microbial agent contains Acetobacter xylinum, Clostridium bovifaecis and Eubacter mucilaginosus, and the microbial agent is prepared from the following raw materials: Acetobacter xylinum, Clostridium bovifaecis and Eubacter mucilaginosus. Studies find that acetobacter burgii, clostridium cow dung and eubacterium mucilaginosus complement each other in the anaerobic fermentation process, the degradation efficiency of organic matters such as carbohydrates and proteins in the organic wastewater / perishable garbage is improved, the yield of volatile fatty acids is remarkably increased, meanwhile, the emission of CO2 is reduced, and the environmental pollution is reduced. The method has the application prospects of organic wastewater / perishable garbage treatment and recycling. When the acid-producing bacterium agent is applied to organic wastewater / perishable garbage, the fermented mixed acid liquid is rich in VFA and can be used as an organic carbon source, and the additional value is higher; when the acid-producing bacterium agent is applied to organic wastewater / perishable garbage, the operation is simple and convenient, the cost is low, biogas slurry treatment links and cost are reduced, the added value of products can be improved, and the acid-producing bacterium agent has an engineering application prospect.

The invention discloses marinobacter hydrocarbonoclastici SN-1 and a culture method and application thereof, the marinobacter hydrocarbonoclastici SN-1 is marinobacter hydrocarbonoclastici SN-1, is preserved in China Center for Type Culture Collection on August 7, 2024, is located in Wuhan University, Wuhan, China, and has a preservation number of CCTCC NO: M 20241755, and the preservation number of the marinobacter hydrocarbonoclastici SN-1 is CCTCC NO: M 20241755. The invention also discloses application of the marinobacter hydrocarbonoides SN-1 or the microbial inoculum in degradation of ammonia nitrogen, nitrite nitrogen, nitrate nitrogen and / or active phosphate concentration in seawater. The seawater body is a mariculture water body, mariculture tail water or an offshore water body, the salinity of the seawater body is 10-40, and the inoculum size of the mariculture SN-1 is 2%. The marinobacter hydrocarbonoides SN-1 disclosed by the invention can remove ammonia nitrogen, nitrite nitrogen, nitrate nitrogen, total nitrogen, active phosphate and total phosphorus in a seawater water body in an aerobic environment with relatively high salinity, has no toxic effect on aquatic animals, and can be applied to improvement and ecological restoration of a seawater water environment.

A method for improving gut microbiota population in a subject by administering a composition comprising allulose, erythritol or a combination thereof. A method for increasing one or more colonic bacterial populations from the families Lachnospiraceae or Eubacteriaceae by administering a composition comprising allulose, erythritol or a combination thereof. A method for preventing, treating or ameliorating a disease in a subject by administering a composition comprising allulose, erythritol or a combination thereof. The disease may be one or more of metabolic syndrome, obesity, type 2 diabetes, insulin resistance, hyperlipoproteinemia, hyperuricemia, hepatic steatosis, hypercholesterolemia, hypertriglyceridemia, irritable bowel syndrome (IBS), colon cancer, allergy, non-alcoholic fatty liver disease, inflammatory bowel disease, cardiovascular disease, or inflammation. The bacterial population may be the species Anaerostipes hadrus, Blautia obeum, Anaerobutyricum hallii, Eubacterium rectale (Agathobacter rectalis), Eubacterium callanderi, Eubacterium limosum and Eubacterium maltosivorans. A composition comprising allulose, erythritol or a combination thereof and one or more colonic bacterial populations from the families Lachnospiraceae or Eubacteriaceae is also provided. The composition may in the form of a food composition.