72results about How to "Good growth promoting effect" patented technology

The invention provides bacillus velezensis NJ157 and application thereof, and relates to the technical field of biological pesticides. The bacillus velezensis NJ157 can resist saline and alkaline, has a good inhibition effect on ralstonia solanacearum, rhizoctonia solanacearum, fusarium moniliforme and phytophthora capsici, and can effectively prevent and treat tomato bacterial wilt, root rot and fruit rot. The bacillus velezensis NJ157 disclosed by the invention also has relatively strong capability of producing protease, cellulase and IAA (Indoleacetic Acid), and has a relatively good growth promoting effect on tomatoes, and a fungicide prepared from the biocontrol bacterium does not cause pollution to the ecological environment in a use process, and is pollution-free. By using the biocontrol bacterium disclosed by the invention, the dosage of other chemical pesticides can be reduced, the prevention and control cost of tomato diseases is reduced, the tomato growth is promoted, and the biocontrol bacterium has a good popularization value.

The invention discloses a saline-alkaline tolerant strain as well as a culture method and application thereof, and relates to the technical field of agricultural biology. Comprising the following steps: S1, screening and culturing strains; s11, carrying out salt tolerance detection on primary strains stored in a laboratory, then carrying out first screening, and screening out strains with OD600 values greater than 1.0 as candidate strains; s12, inoculating the candidate strains into a culture medium, carrying out secondary screening, and screening out strains with the OD600 value greater than 1.0 as saline-alkaline tolerant strains; and S13, inoculating the saline-alkaline tolerant strain into the EPS-producing strain fermentation medium. The application of the saline-alkaline tolerant strain provided by the invention can obviously improve the yield and quality of crops; experiments show that after the HB-02 strain is inoculated, the prevention and treatment effect on wheat root rot reaches 80.2%, the yield of wheat in saline-alkali soil is increased to 703.13 g / m < 2 > from 516.61 g / m < 2 >, the yield is increased by 36.10%, and good disease prevention and growth promotion effects are shown.

The invention relates to a salt-tolerant bacillus and application thereof, and belongs to the technical field of microbial fertilizers, the salt-tolerant bacillus is preserved in China General Microbiological Culture Collection Center (CGMCC) on July 10, 2024, and the preservation number is CGMCC No.31260; the strain is relatively strong in saline-alkaline tolerance, has the capabilities of dissolving potassium, decomposing cellulose, degrading protein and dissolving organophosphorus, can antagonize various plant pathogenic bacteria such as Erwinia persicae, fusarium oxysporum and fusarium fusiforme, can generate a good growth promoting effect on corn in a salt-free or salt-containing environment, and is very wide in application prospect.

The invention relates to paenibacillus polymyxa capable of preventing diseases, resisting stress and promoting growth and application of the paenibacillus polymyxa, and belongs to the technical field of microorganisms, the paenibacillus polymyxa SS44 has the characteristics of degrading protein, degrading fat, degrading cellulose, dissolving potassium, fixing nitrogen, dissolving organic phosphorus, dissolving inorganic phosphorus and producing exopolysaccharide. The strain is capable of antagonizing pathogenic bacteria fusarium oxysporum and fusarium fusiforme which can cause potato fusarium wilt, sweet potato root rot, soybean root rot, alfalfa root rot and the like, can improve sandy soil, can generate a good growth promoting effect on wheat, soybean and corn in saline-alkali soil and sandy barren soil environments, and is very wide in application prospect.

The invention relates to a skin grafting material and a using method thereof. The skin grafting material is composed of compressed sponge and repairing liquid. The compressed sponge is selected from chitosan sponge, collagen sponge or polyvinyl formal sponge; the repairing liquid is selected from normal saline containing human epidermal growth factors and / or normal saline containing superoxide dismutase. The use method comprises the following steps: attaching the skin layer of the cut skin graft to the compressed sponge, then putting the compressed sponge into a medical skin rolling machine, and cutting the skin graft into micro skin graft; the cut miniature skin graft is soaked in the repairing liquid, is attached to the position to be subjected to skin grafting after fully absorbing the liquid and expanding, and is wrapped with gauze. The skin grafting material provided by the invention can reduce damage to newborn granulation when the skin grafting material is removed, has an antibacterial effect and improves scar hyperplasia contracture after a skin grafting wound operation; meanwhile, the sponge which absorbs the liquid and expands can slowly release the repairing liquid, so that skin cell regeneration is promoted, epithelization of a skin grafting area is accelerated, and wound healing is promoted; the healing effect is good, and the application prospect is wide.

The invention relates to the technical field of microbial control, and discloses a bacillus velezensis nano-material complex microbial inoculant as well as a preparation method and application thereof. The microbial inoculum is prepared by the following steps: preparing a bacterial suspension of bacillus velezensis; mixing sodium alginate with the bacterial suspension, adding nanocarbon, and stirring to obtain a mixed solution; and adding the mixed solution into a stirred calcium chloride solution, and reacting to obtain the bacillus velezensis microcapsule fungicide. The bacteriostasis rates of the fungicide for citrus brown spot, citrus colletotrichum gloeosporioides, citrus lipolytic macular blight, banana fusarium wilt and banana long leaf spot bacteria are all greater than 56%; the prevention and treatment effect on the Huanglongbing reaches 57.84%. After ultraviolet irradiation, the bacteriostatic ability of the microbial agent is reduced by only 4.32%, and the microbial agent can play a biological prevention and control role for a long time. The growth amount of citrus seedlings treated by the microbial inoculum can be increased by 220.39%, the number of newly grown leaves can be increased by 244.67%, and the microbial inoculum has a good plant growth promoting effect.

The invention provides a top-down directional evolution method for growth-promoting microbiome of rice. The top-to-bottom rice growth-promoting microbiome directional evolution method comprises the following steps: step 1, selecting a microbiome with a growth-promoting effect on rice seedlings, combining Bottleneck + Migration into an LB culture medium for iterative culture, and after 15 rounds of non-selective iteration, transferring each round of iteration into a new LB culture solution; 2, respectively inoculating the flora subjected to 15 rounds of non-selective iteration in the step 1 into a Hoagland nutrient solution; 3, the nutrient solution samples with the flora added in the step 2 are respectively and equivalently added into rice seedling culture dish samples; 4, observing the growth vigor of the rice once every five days, and detecting morphological indexes such as leaf length and root length of the rice; 5, repeating the steps 1-4 on the inoculated flora screened in the step 4, and circulating for 5 times; the method has the advantage of screening out the microbiome capable of remarkably promoting the growth of the rice seedlings.

The invention belongs to the technical field of microorganisms, and particularly relates to a P.megatherium NZ-1 strain, a microbial agent and application of the P.megatherium NZ-1 strain and the microbial agent. The classification name of the strain is Pristia megaterium, the strain is preserved in the China Center for Type Culture Collection on September 13, 2024, the preservation number is CCTCC NO: M 20241962, the preservation address is No. 299 on eight road, Wuchang District, Wuhan City, Hubei Province, and the postal code is 430000. The strain has the capabilities of decomposing zinc and secreting indoleacetic acid, and can convert zinc which is difficult to use into available zinc, increase the content of effective zinc in soil, improve the utilization rate of a fertilizer and promote plant development and fertilizer absorption, so that the biomass in the seedling stage and the yield in the whole growth period of wheat are improved, and the growth of wheat is promoted; strain resources are provided for agricultural production and soil improvement.

The invention discloses a microbial agent for promoting cucumber growth and a preparation method and application thereof, and belongs to the technical field of agricultural microorganisms. The microbial agent is prepared from the following components: achromobacter denitrificans, bradyrhizobium angularis and Vilnelandan nitrogen-fixing bacteria in a volume ratio of 2 to 1 to 1. Bacteria with a growth promoting effect are reasonably combined for use, so that the growth promoting effect of the mixed flora on cucumbers is better than that of a single strain, and the adaptability of the synergistic effect of the strains in the actual soil rhizosphere complex environment is higher. By determining the number of strains and mixing according to a specific proportion, germination of cucumber seeds is stably and effectively promoted, root elongation is promoted, the flowering and fruit setting rate is increased, and meanwhile the plant height, plant biomass and chlorophyll content of cucumbers in the seedling stage are increased. Besides, the microbial agent disclosed by the invention is beneficial to improving the growth quality and yield of plants and reducing environmental pollution, has wide application potential in the fields of agriculture and ecology, and is worthy of popularization.

The invention discloses bacillus megaterium YK35 and application thereof, and belongs to the technical field of microorganisms. The strain is preserved in the China General Microbiological Culture Collection Center on October 9, 2024, and the preservation number is CGMCC (China General Microbiological Culture Collection Center) No.32158; the strain has efficient potassium dissolving capacity and IAA (indoleacetic acid) producing and phosphorus dissolving capacity, and can remarkably promote the growth of crops; excellent stress resistance including heavy metal stress resistance, acid and alkali stress resistance, salt stress resistance and flooding stress resistance is achieved, and the adaptability is wide; the invention also provides a microbial agent containing the strain. Pot experiment and field experiment verification show that the microbial agent can promote the growth of plants; the yield and quality of the potatoes can be remarkably improved, and the effects of high yield and income increase are achieved; the application of potash fertilizer can be reduced through the potassium dissolving function of the fertilizer; the invention provides a new strain resource for the microbial fertilizer industry, and shows a strong application value in the aspect of growth promotion and yield increase of rhizosphere.

The invention discloses rahnella and application thereof, and belongs to the technical field of microbiology and biology, the rahnella S5-11 strain provided by the invention is a new species of rahnella, and the preservation number of the rahnella is GDMCC No: 63732. The strain S5-11 has relatively strong tolerance to selenate and selenite, the selenite and the selenite can be reduced into nano elemental selenium, a method for preparing a large amount of nano selenium by utilizing a bioreactor is established, and the strain S5-11 can be used for production of nano selenium and bioremediation of selenium-polluted environment and has a wide application prospect. Besides, the strain has good plant growth promoting ability, can promote crop growth in low-selenium soil, and can relieve stress of selenium on plants in high-selenium soil.

The present invention discloses a composite bacterial agent capable of preventing and controlling Hami melon wilt and root-knot nematode disease, comprising Trichoderma fungus NJAU-HNF11 and Bacillus bacteria NJAU-HNB23. The present invention also discloses the use of the composite bacterial agent in preventing and controlling Hami melon wilt, root-knot nematode disease, and promoting Hami melon growth. The composite bacterial agent of the present invention has a significant prevention and control effect on Hami melon wilt and root-knot nematode disease, and also has a significant Hami melon growth-promoting effect. The composite bacterial agent of the present invention can improve production efficiency and ecological environmental benefits, and promote the green, healthy and sustainable development of agriculture.

The invention discloses an application of a novel mycobacterium spp. Strain and sudangrass in combined remediation of uranium-contaminated soil. According to the invention, a new strain Microvirga sp.M2 is separated from a sandy soil sample of a tailing dam in the southwest region, and the bacterial colony of the new strain Microvirga sp.M2 is light pink, round, glossy in surface, convex in middle, smooth and tidy in edge, thin in texture and easy to emulsify on NA; the cells are rod-shaped, the ends of the cells are round, and the cells are independent, paired or short-chain-cluster-shaped, have no flagellum and do not generate spores. The micromycobacterium sp.M2 strain not only has the characteristics of nitrogen fixation, phosphorus solubilization, siderophore synthesis and IAA (Indoleacetic Acid) production, but also has good tolerance to uranium; meanwhile, the strain also has good growth promoting ability, has a better protective effect on relieving the toxicity of uranium to seed germination stress, can relieve the toxicity of uranium to plant growth, and can significantly increase the biomass of plants and the enrichment amount of uranium.

The invention belongs to the technical field of microorganisms, and discloses a compound microbial agent and application thereof in crop disease control. According to the invention, two plant endophytes, namely trichoderma asperellum and trichoderma atroviride, are separated, the trichoderma asperellum is Trichoderma asperellum M11, and the preservation number is CGMCC (China General Microbiological Culture Collection Center) No.40752; the trichoderma atroviride is Trichoderma atroviride T5, and the preservation number of the trichoderma atroviride is CGMCC (China General Microbiological Culture Collection Center) No. 22432. Fermentation liquor of two trichoderma strains and auxiliaries are prepared into the compound microbial agent, the compound microbial agent has excellent prevention and treatment effects on pepper phytophthora blight, cucumber fusarium wilt, watermelon fusarium wilt, cucumber damping off, tomato sesame spot, tomato early blight and tomato leaf mold, in addition, the compound microbial agent can promote growth and increase yield, the disease resistance of plants is improved, and the application prospect is wide.

The invention discloses a phosphate solubilizing bacterium 4P-1 and a drought-resistant phosphate solubilizing bacterium agent thereof. The phosphate solubilizing bacterium 4P-1 is classified and named as Pseudomonas orientalis (Pseudomonas orientalis) 4P-1, and the phosphate solubilizing bacterium 4P-1 is named as Pseudomonas orientalis (Pseudomonas orientalis) 4P-1. The Pseudomonas extrinsic 4P-1 provided by the invention has efficient phosphate solubilizing capacity, and the drought resistance of the 4P-1 and the phosphate solubilizing efficiency under the drought condition can be remarkably improved by adding a drought-resistant agent (prepared by mixing polyglutamic acid and trehalose according to the molar ratio of 3: 1) into the Pseudomonas extrinsic 4P-1. Under the same drought stress degree, the growth amount and the phosphate solubilizing capacity of the 4P-1 fungicide in a drought environment can be remarkably improved by adding the drought-resistant agent. Technical support can be provided for development and application of phosphorus-dissolving and drought-resisting microbial fertilizers for crops, and growth of commercial crops is promoted.

The invention discloses a compound microbial agent as well as a preparation method and application thereof, and belongs to the technical field of agricultural waste rapid composting microbial agents. The prepared composite microbial agent comprises bacillus siamensis, bacillus megatherium, azotobacter chroococcum, bacillus subtilis, bacillus amyloliquefaciens, actinomycetes, saccharomycetes and lactobacillus plantarum, and is used in the composting process of compatibility of pig manure and sorghum straw. Substances such as protein, starch, cellulose and lignin in the raw material pig manure and crop straw can be decomposed, and the degradation speed and effect of compost are improved; the composting quality can be improved, harmful substances are reduced, and the composting is safer and more efficient. The compound microbial agent has excellent performance in actual use, and can provide high-quality organic fertilizer for agricultural production.

The invention discloses a plant growth-promoting rhizobacteria and application thereof, and relates to the technical field of agricultural microorganisms. The strain is named as serratia sp. SYPP26, the strain is preserved in the Guangdong Microbial Culture Collection Center, the preservation number is GDMCC NO: 64911, and the preservation date is July 24, 2024, and the strain is named as serratia sp. SYPP26. The strain is named as serratia sp. SYPP26 and is preserved in the Guangdong Microbial Culture Collection Center, the preservation number is GDMCC NO: 64911. The strain is separated from the rhizosphere soil environment of the high-yield rubber tree, is high in environmental adaptability, keeps good growth consistency when the salt concentration is 1-7%, the temperature is 20-30 DEG C and the pH is 3.5-9.0, and can adapt to most of acid soil in the southern China; the strain has the capabilities of dissolving phosphorus, producing siderophores, producing indoleacetic acid, producing gibberellin, producing ammonia and the like, and experiments prove that the strain has the capability of improving the content of ammonium nitrogen and nitrate nitrogen in soil, and can improve the germination rate of rice seeds and remarkably promote plant growth and root development.

The invention discloses a culture medium for promoting growth of bifidobacteria and application of the culture medium. 1L of the culture medium is prepared from the following components: 6.2 to 7.4 g of # imgabs0 # peptone, 1.5 to 2.5 g of soy peptone, 3.0 to 3.8 g of yeast extract powder, 1.0 to 2g of beef extract powder, 8.5 to 9.5 g of digestive serum powder, 0.5 to 1.5 g of bovine liver extract powder, 1.5 to 2.0 g of monopotassium phosphate, 1.5 to 2.5 g of sodium chloride, 0.1 to 0.3 g of L-cysteine, 0.1 to 0.3 g of sodium thioglycolate, 0.05 to 0.12 g of growth promoting factors and the balance of water. The growth promoting factor is periplocin, syringaldehyde, 4-methoxysalicylaldehyde, astragaloside, calycosin or formononetin. The raw materials of the culture medium are easy to obtain, the growth promoting effect on bifidobacterium is good, and time and cost are saved. Bifidobacterium grows fast in the culture medium provided by the invention.

The invention discloses plant endophytic fungus melanin-producing aureobasidium and application thereof. The strain can effectively promote the growth of arabidopsis thaliana and tomatoes. After co-culture with the strain, the fresh weights of arabidopsis thaliana and tomato seedlings are respectively increased by 259.18% and 182.55% compared with those of a control group; and compared with a control group, the leaf area of the arabidopsis thaliana seedling is increased by 154.08%. After fermentation liquor filtrate of the strain is applied, in a potted plant growth promoting test, the fresh weight of the overground part of a tomato seedling is increased by 69.15% compared with a control group, the dry weight of the overground part is increased by 75.95%, the fresh weight of the underground part is increased by 80.00%, the dry weight of the underground part is increased by 120.01%, and the root length of the tomato seedling is increased by 66.98% compared with the control group. By applying the strain and the fermentation liquor filtrate thereof provided by the invention, a remarkable growth promoting effect can be exerted, and the strain has a wide development and utilization prospect in the field of agricultural microbial fertilizers and is worthy of being vigorously popularized.

The invention relates to a complex microbial inoculant as well as a preparation method and application thereof, and belongs to the technical field of microorganisms. In the composite microbial inoculant, the ratio of the microbial inoculant of the Peribacillusfrigitorirans NMI04 to the microbial inoculant of the bacillus amyloliquefaciens QZB03 to the microbial inoculant of the bacillus subtilis NMC07 is (1 to 5) to (1 to 5) to (1 to 5); the number of effective viable bacteria in the complex microbial inoculant is 1 * 10 < 8 >-1 * 10 < 11 > CFU / g. The complex microbial inoculant disclosed by the invention has a remarkable capability of inhibiting pathogenic bacteria of crops, and has a good biological control effect. The growth vigor of crops can be obviously improved, and the growth-promoting capability is excellent. The salt resistance and the cold resistance of crops can be induced, so that the efficient growth of the crops is promoted, and the yield and the quality of the crops are greatly improved.

This invention discloses a strain of *Pseudomonas aeruginosa* OP16 and its applications, belonging to the field of microbial technology. The *Pseudomonas aeruginosa* OP16 strain has been deposited at the China Center for Type Culture Collection (CCTCC), accession number: CCTCC NO: M 20261382, deposit date: June 18, 2026, deposit address: Wuhan University, Wuhan, China. This invention also provides a microbial inoculum containing this strain. Within an annual average precipitation range of 400-2000 mm, after inoculating with OP16 solution via root irrigation, Ginkgo seedlings showed an increase in seedling height of 51.71%-91.25%, ground diameter of 7.06%-62.12%, single-plant dry weight of 91.58%-220.00%, and relative chlorophyll content of 33.46%-63.66% compared to the control. This strain has strong growth-promoting ability and a wide range of adaptability, and can be used for Ginkgo seedling cultivation.

The invention provides an aquatic product fermented feed auxiliary material as well as a preparation method and application thereof. The aquatic product fermented feed auxiliary material comprises a fermentation raw material and a fermentation strain composition, and the mass of the fermentation strain composition is 0.3%-0.5% of the mass of the fermentation raw material; wherein the fermentation raw materials comprise the following components in parts by weight: 10-25 parts of peanut meal, 20-45 parts of soybean meal, 25-35 parts of bran and 5-15 parts of yeast metabolite; the fermentation strain composition is prepared from 45 to 55 parts of saccharomyces cerevisiae boulardii, 10 to 15 parts of bacillus subtilis, 2 to 4 parts of lactobacillus plantarum, 14 to 18 parts of alkaline protease, 15 to 19 parts of glucose and 36 to 48 parts of water. In the application process, the aquatic product fermented feed auxiliary material can improve the nutritional value of the aquatic product fermented feed auxiliary material, can promote food calling of aquatic animals, has a good growth promoting effect on the aquatic animals, and can also improve the water quality of the growth environment of the aquatic animals.

The present invention relates to the technical field of biocontrol bacteria, and in particular to the application of Pseudomonas chlororaphis and its synthetic bacterial flora in the prevention and treatment of corn root rot. The Pseudomonas chlororaphis RS36 of the present invention has a deposit number of CCTCC NO: M 20241983, can effectively inhibit the growth of Fusarium graminearum and Fusarium pseudoverticillium, has a good control effect on corn root rot, and is accompanied by a good growth-promoting effect, providing a new biocontrol bacterium for the prevention and treatment of corn root rot. Further, the synthetic bacterial flora composed of the above-mentioned Pseudomonas chlororaphis RS36 and the spindle-shaped lysine Bacillus RS104 separated by the present invention has a better control effect on Fusarium graminearum and Fusarium pseudoverticillium than a single strain, with a relative control effect of 41.08% and 37.78%, and the growth-promoting effect is also better than that of a single strain, and the aboveground biomass of corn can be increased by 36.15% to 65.05% compared with the diseased plants.

The invention discloses preparation of p-methyl peptide and application of the p-methyl peptide in agriculture, and relates to the field of preparation of p-methyl peptide and application of the p-methyl peptide in plants, and the preparation method comprises the following steps: step 1, feeding and device building: adding a preset amount of L-alanine and ethylene glycol into a 250mL single-mouth round-bottom flask. As a natural cyclic dipeptide, the p-methyl peptide shows an excellent environment-friendly characteristic in plant stress resistance application. Compared with a traditional method depending on chemical fertilizers and pesticides, the method has the advantages that the method is non-toxic and harmless, soil hardening and water eutrophication caused by excessive use of the chemical fertilizers are avoided, quality safety of agricultural products is not affected as pesticide residues exceed the standard, and damage to non-target organisms and damage to ecological balance are avoided; the problem of environmental pollution caused by a traditional method is avoided from the source, and powerful support is provided for agricultural ecological environmental protection.

The invention discloses a bacillus licheniformis-containing feed additive, and particularly relates to the field of feed additives, the bacillus licheniformis-containing feed additive comprises the following raw materials: sea-buckthorn, honeysuckle, sepiolite clay, chitosan, kelp powder, banana peel, compound trace elements, fish meal, a culture medium, amino acid, a mangosteen shell extract, bacillus licheniformis and the balance of corn flour. The nutritional broth culture medium is added, the taste of the feed can be improved by adding the nutritional broth culture medium, chitosan is added into the culture medium, when bacillus licheniformis is firstly mixed with the culture medium, the chitosan can enter the bacillus licheniformis, the activity of chitinase is stimulated, the activity of the bacillus licheniformis is better, and the taste of the feed is improved. And when the bacillus licheniformis is distributed in the feed additive, the bacillus licheniformis is coated with a culture medium containing chitosan, so that the growth environment of the bacillus licheniformis is better, and the growth promotion effect on animals is better.

The invention relates to the technical field of agricultural cultivation, in particular to a method for preventing and treating pathogenic fungus infection after continuous cropping of tomatoes by combining calcium propionate with trichoderma harzianum, and the method can enhance the disease resistance of the tomatoes after continuous cropping, improve the quality of the tomatoes and promote the growth of the tomatoes. It is found for the first time that combined use of calcium propionate and trichoderma harzianum can comprehensively prevent and treat common mixed fungus infection after tomato continuous cropping, and particularly, the composition has a comprehensive prevention and treatment effect on mixed fungus infection of Colletotrichum gloeosporioides, Colletotrichum oleifera, Fusarium graminearum and Amoerella almoka.

The present invention discloses a kind of endophytic fungus spiral Chaetomium of Dendrobium and its application in the growth of Dendrobium. It is classified and named as spiral Chaetomium Chaetomium spirochaete, and its classification status is Ascomycetes, Ascomycetes, Chaetomaceae, Chaetomium, and the strain number is JSNLSHQH-5. It has been deposited in the General Microbiological Center of China Microbiological Culture Collection Committee, and the deposit number is CGMCC NO.18542. The deposit date is September 2, 2019. The deposit address is the Institute of Microbiology, Chinese Academy of Sciences, No. 3, No. 1, Beichen West Road, Chaoyang District, Beijing, Postal Code 100101. The spiral Chaetomium spirochaete strain JSNLSHQH-5 of the present invention has obvious growth-promoting effect on Dendrobium officinale seedlings, promotes its growth, and enhances its stress resistance. At the same time, it can be artificially cultured, the culture conditions are simple, and it is easy to mass produce, and it has good development and application prospects.

The invention belongs to the field of plant growth and resistance, and particularly relates to a strobilanthes cusia endophytic fungus MLR15. The strobilanthes cusia endophytic fungus MLR15 disclosed by the invention is a bacterial strain which is preserved in the China General Microbiological Culture Collection Center (CGMCC) and has a preservation number of CGMCC No.41250. Experiments show that MLR15 can effectively promote growth of strobilanthes cusia and has a certain broad-spectrum growth promoting effect on crops such as tomatoes. In addition, the MLR15 can also promote the increase of the content of the active ingredient indigo for the traditional Chinese medicine of the strobilanthes cusia. Therefore, the MLR15 provided by the invention can be developed into an active microbial agent for promoting plant growth and synthesis of medicinal components of strobilanthes cusia, and has a very good application prospect.

The invention provides application of bacillus velezensis JB-23 in promotion of sugarcane bud germination under stress conditions, and belongs to the technical field of microorganisms. The bacillus velezensis JB-23 provided by the invention is preserved in the China Center for Type Culture Collection, and the preservation number of the bacillus velezensis JB-23 is CCTCC M 20221134. The bacillus velezensis JB-23 provided by the invention can improve the germination rate of sugarcane, can slow down high-temperature stress suffered by sugarcane buds even under high-temperature and drought stress, and ensures the development of the stressed sugarcane buds to a certain extent. Meanwhile, in a field environment, a bacterial suspension of the JB-23 strain can promote the plant height and stem diameter growth of sugarcane stems, increase the biomass and SPAD value of the overground part and the underground part, improve the photosynthetic efficiency and the like, and is a biological control strain which can also show good growth promoting ability under the field condition; and a new strain resource is provided for a sugarcane growth-promoting microbial resource library.

The invention discloses a tobacco endophytic fungus for promoting growth of tobacco seedlings and application of the tobacco endophytic fungus. The preservation number of the strain is CGMCC (China General Microbiological Culture Collection Center) Tobacco is a leaf commercial crop, tobacco planting and production are often limited by multiple factors such as diseases and insect pests, heavy metal stress and drought stress in recent years, tobacco plants grow slowly in the seedling stage or the field stage, and the yield and quality of tobacco leaves are seriously threatened. The endophytic fungus liquid separated from K326 is applied to soil at the upper parts and roots of different varieties of tobacco seedlings, so that the biomass and agronomic characters of the tobacco seedlings can be remarkably improved.