222 results about "Indoleacetic Acids" patented technology

The invention belongs to the technical field of microorganisms, and particularly relates to a Prlisteria ataveovii strain and application thereof. The invention provides a Pichia aryabhattai B8, which is preserved in the General Microbiological Culture Collection Center of the China Committee for Culture Collection of Microorganisms, the preservation date is September 10, 2024, and the preservation number is CGMCC No.31932. The Pichia aryabhattai B8 disclosed by the invention has the advantages that the Pichia aryabhattai B8 can be used for preparing the Pichia aryabhattai B8; the prelisteria aryabhattai B8 disclosed by the invention has a relatively strong function of producing indoleacetic acid, and the content of indoleacetic acid in plants can be increased, so that the stress resistance of the plants is improved; dissolution of insoluble phosphorus and potassium in soil can be promoted, soil nutrients are improved, plant growth is promoted, and plant quality is improved; and meanwhile, the P.aryabhattai B8 has a certain antagonistic effect on pathogenic bacteria of the wheat root rot, and can be used for preventing and treating the wheat root rot.

The invention provides a strain of Burkholderia graminicola as well as a bacterial agent and application of the Burkholderia graminicola. The preservation number of the Burkholderia graminicola is CCTCC (China Center For Type Culture Collection) NO: M20242399. The Burkholderia paragallinarum provided by the invention has the functions of nitrogen fixation, phosphate solubilization, siderophore production and indoleacetic acid production. The Burkholderia grassy and the fungicide taking the Burkholderia grassy as the effective active component can promote the germination of plant seeds and the growth of crops.

The invention relates to bacillus velezensis and application thereof in preparation of a water-soluble microbial agent, and belongs to the technical field of microorganisms. The bacillus velezensis has the effects of producing exopolysaccharides, promoting the formation of soil aggregates, degrading abamectin, hydrolyzing protein, producing indoleacetic acid, promoting the growth of tomato plants and promoting the enzyme activity of tomato rhizosphere soil enzyme. The fertilizer not only has the effects of improving the soil aggregate structure and promoting the growth of tomato plants, but also can accelerate the temperature rise of the abamectin fermentation waste residue compost, prolong the high-temperature period and shorten the compost period, and is beneficial to promoting the harmless treatment and resource utilization of the abamectin fermentation waste residue.

The invention provides a salt-alkali-tolerant endophytic bacillus subtilis strain and application thereof in improvement of saline-alkali soil, and belongs to the technical field of biological bacteria. According to the invention, a salt and alkali tolerant endophytic bacillus strain NXO3 is obtained from stems and leaves of suaeda salsa, and is identified as bacillus subtilis (bacillus subtilis); the strain has the capabilities of dissolving phosphorus, fixing nitrogen and generating indoleacetic acid (IAA) and polyglutamic acid, and has a remarkable inhibition effect on a plurality of plant pathogenic bacteria such as fusarium neosporum, colletotrichum gloeosporioides, fusarium graminearum, fusarium oxysporum and cavity microsporum. The agricultural microbial agent containing 0.3 billion / g of NXO3 is prepared through formula optimization. The bacillus subtilis NXO3 has a remarkable saline-alkaline tolerance function, a plant growth promoting effect and a biocontrol effect on plant diseases, and the emergence rate and the yield of crops in saline-alkaline land can be increased.

The invention discloses a saline-alkaline tolerant growth-promoting bacillus velezensis AH216 and application thereof, and belongs to the technical field of microbiology and biologica.Bacillus velezensis AH216 is preserved in the China Center for Type Culture Collection (CCTCC), and the preservation number is CCTCC No: M 20241496. The saline-alkaline tolerant growth-promoting bacillus velezensis AH216 has the advantages that the saline-alkaline tolerant growth-promoting bacillus velezensis AH216 can be used for preparing saline-alkaline tolerant growth-promoting bacillus velezensis AH216; the bacillus velezensis AH216 provided by the invention can inhibit the growth of pathogenic bacteria of cotton fusarium wilt, and has the growth promoting functions of dissolving potassium, generating indoleacetic acid, cellulase, protease, siderophore and the like; meanwhile, the bacillus velezensis AH216 can tolerate a highly saline-alkaline environment, can improve agronomic characters such as the plant height, the biomass and the leaf area in the corn seedling stage in common soil and saline-alkaline soil, and can promote the development of a corn root system.

The invention discloses a Moraxella rosela and an application of the Moraxella rosela as a fungicide in improving the salt tolerance of plants or relieving the salt stress of the plants, the number of the Moraxella rosela sp. Is H136, the Moraxella rosela sp. Is preserved in the China Center for Type Culture Collection, and the preservation number is CCTCC NO: M 20241499. The invention further discloses a preparation method of the Moraxella rosela and an application of the Moraxella rosela as a fungicide in improving the salt tolerance of the plants or relieving the salt stress of the plants. The Moraxella roselle H136 provided by the invention can survive in a highly saline-alkaline environment, can generate indoleacetic acid, and has a very good application prospect in the aspects of growth promotion and yield increase of biological agents and saline-alkaline land.

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

The invention discloses a bacillus AH83 capable of resisting saline and alkaline and promoting growth and application thereof, and belongs to the technical field of microbiology and biology, the bacillus AH83 is preserved in the China Center for Type Culture Collection with the preservation number of CCTCC No: M 20241495, and the bacillus AH83 is preserved in the China Center for Type Culture Collection with the preservation number of CCTCC No: M 20241495. The AH83 provided by the invention is a new species of bacillus, can inhibit the growth of pathogenic bacteria of cotton fusarium wilt, and has the growth promoting functions of dissolving potassium, generating indoleacetic acid, cellulase, protease, siderophore and the like; meanwhile, the AH83 can survive in a highly saline-alkaline environment, can promote agronomic characters such as plant height, biomass, leaf area and root development in a corn seedling stage when applied in saline-alkaline soil, can also increase soil nutrients and enzyme activity content, and has a promoting effect on lavender seed germination. The strain is of great significance in improving crop yield and stress resistance and developing novel agricultural microbial agents.

The invention provides a spiropolyspora roseus strain for preventing and treating root knot nematode disease, and the preservation number of the spiropolyspora roseus strain is CGMCC No.41822. The invention also provides a microbial inoculum containing the spiropolyspora pink strain, and the microbial inoculum is prepared by the following steps: inoculating a culture medium with the spiropolyspora pink HLF-14-11, and culturing until spores are produced; spores are eluted to prepare a spore suspension, or a bacterial block is cut to serve as a liquid fermentation inoculant; inoculating the inoculant into a liquid culture medium, and carrying out shake culture; and taking the fermentation liquor to prepare liquid, powder and granules. The spiropolyspora pink strain provided by the invention is separated from root-knot nematode oocysts of diseased tomatoes, can parasitize eggs of root-knot nematodes and inhibit incubation of the eggs, fermentation filtrate of the spiropolyspora pink strain has a relatively strong poisoning effect on second-stage larvae of the root-knot nematodes, and the fatality rate of the second-stage larvae reaches 89.1%. Meanwhile, the strain can produce auxin substances such as indoleacetic acid and the like, and plant growth and root development are promoted.

The invention discloses bacillus subtilis subsp. Natto YJ01 and application of the bacillus subtilis subsp. Natto YJ01. The preservation number of the bacillus subtilis subsp. Natto YJ01 strain is GDMCC No: 64944, and the bacillus subtilis subsp. Natto YJ01 strain can be used for dissolving inorganic phosphorus and synthesizing various active substances such as indoleacetic acid, siderophore, protease, gamma-polyglutamic acid, exopolysaccharide and the like. The YJ01 can promote the germination of lavender seeds and the growth in the germination period, and promote the growth and development of corn and oil sunflower plants. Meanwhile, the YJ01 can tolerate a high saline-alkali environment and can improve the physical structure of saline-alkali soil, and key growth indexes such as biomass, leaf area and root development of the corn and the oil sunflower can be effectively improved by applying the YJ01 to the saline-alkali soil. Therefore, the application of the strain YJ01 not only provides a new method for crop growth promotion and saline-alkali soil improvement, but also has important significance for agricultural sustainable development.

The invention discloses and relates to a strain capable of resisting saline and alkaline and producing IAA (Indoleacetic Acid). The strain is classified and named as bacillus atrophaeus, and the preservation number of the strain is CGMCC (China General Microbiological Culture Collection Center) NO.29799. The strain is preserved in China General Microbiological Culture Collection Center on January 29, 2024. The bacillus atrophaeus HHQGTS13-1 can grow under the condition that the salt content is higher than 3%, can generate indoleacetic acid, cellulase, amylase, protease and ligninase, can inhibit various plant pathogenic bacteria, such as banana anthracnose, tomato gray mold, cotton verticillium wilt, rice sheath blight disease, wheat head blight, banana fusarium wilt, capsicum white spot and the like, and can be used for preparing the bacillus atrophaeus HHQGTS13-1. Particularly, the compound plays an important role in preventing and treating wheat scab, banana anthracnose and capsicum white spot. The strain can promote plant growth in a saline-alkali environment, and can be used for improving soil quality, developing special microbial fertilizers, microbial agents and biopesticides for saline-alkali soil, relieving crop salt stress damage and increasing crop yield.

The invention belongs to the technical field of microorganisms and biological control, and particularly relates to paenibacillus polymyxa and application thereof in biocontrol and growth promotion. Specifically, a strain of paenibacillus polymyxa GLZ219 is obtained through screening, and experiments prove that the paenibacillus polymyxa GLZ219 has a relatively high bacteriostasis rate on pathogenic bacteria of tomato neck and root rot; meanwhile, the strain has a good antagonistic effect on nine common plant pathogens such as Rhizoctonia solani and the like, and can be widely applied to green prevention and control of various crop diseases. Besides, the paenibacillus polymyxa GLZ219 has nitrogen fixing and potassium dissolving capabilities, can secrete heteroauxin and siderophores, and can effectively promote the growth of tomato plants, the plant height of tomato seedlings treated by fermentation liquor of the paenibacillus polymyxa GLZ219 is remarkably increased, diseases can be prevented and controlled, the growth vigor of crops can be improved, the yield and quality of the crops can be improved, and the paenibacillus polymyxa GLZ219 has a wide application prospect.

The invention relates to the technical field of ecological agriculture, and discloses a phytase fungicide fertilizer as well as a production method and application thereof. 1-10 parts of a phytase high expression strain; 1-8 parts of a phytase solution; 1.7 to 9 parts of an embedding material; 3-8 parts of pH buffer particles; 10-30 parts of a micro-carbon carrier; 0.02 to 0.10 part of an indoleacetic acid microcapsule; and 30-60 parts of humus powder. The invention further provides a production method of the phytase fungicide fertilizer. The method comprises the following steps: S1, performing liquid fermentation on a phytase high-expression strain; s2, mixing the thalli with an enzyme solution; s3, adding pH buffer particles into the embedded particles; s4, drying the granules in a spray drying manner; and S5, mixing the dried product with humus powder, and granulating. By constructing a microbial inoculum system containing a phytase high-expression strain, efficient activation and conversion of organic phosphorus resources are realized, and the release efficiency of the fertilizer to phosphorus resources is improved.

The invention provides application of mitochondrial acid 5 in preparation of a medicine for treating reproductive organ injury caused by diabetes mellitus, and relates to the technical field of biological medicine. Experiments prove that as an artificially synthesized indole-3-acetic acid derivative, MA-5 provides a brand new treatment thought for testis injury caused by diabetes mellitus, not only is beneficial to improvement of reproductive function, but also possibly provides a new strategy for overall treatment of diabetes mellitus. Besides, as a natural plant hormone, MA-5 has relatively high safety and acceptability, and possibly becomes a new alternative therapy with a clinical application prospect. Although the long-term administration of the MA-5 does not significantly influence the blood glucose level, the alleviation effect of the MA-5 on testis injury shows that the MA-5 as a treatment means for long-term use can continuously improve reproductive dysfunction caused by diabetes, and has potential clinical advantages.

The invention belongs to the technical field of microorganisms, and particularly relates to a Prlisteria megatherium strain and application thereof. The invention provides a strain of Pristeria megaterium A3, and the preservation number of the Pristeria megaterium A3 is CGMCC (China General Microbiological Culture Collection Center) No. 31931. The prelisteria megatherium A3 can generate indoleacetic acid (IAA), and can directly promote the elongation of a plant root system, so that the opportunity that a plant is in contact with nutrient substances in soil is increased, the content of endogenous IAA in a plant body is increased, the expression of a plant defense gene is induced, and the stress resistance such as disease resistance and drought resistance of the plant body is improved. Meanwhile, the prelisteria megatherium A3 disclosed by the invention has phosphorus solubilizing capacity, and can convert phosphorus which is difficult to utilize into available phosphorus, so that the content of available phosphorus in soil is increased. In addition, the prelisteria megatherium A3 also has potassium dissolving capacity, and can improve the utilization rate of the fertilizer and promote the growth and development of plants and the absorption of the fertilizer.

The invention belongs to the technical field of microorganisms, and particularly relates to stenotrophomonas maltophilia yg3 and application thereof. The invention discloses stenotrophomonas maltophilia yg3, and the preservation number of the stenotrophomonas maltophilia yg3 is CGMCC (China General Microbiological Culture Collection Center) No.34131. The stenotrophomonas maltophilia yg3 disclosed by the invention has the capability of efficiently synthesizing indoleacetic acid (IAA), and the IAA yield of 98.10 mg / L can be realized without optimization in an NB culture medium containing 5mM L-tryptophan, which is obviously higher than that of other wild strains. Moreover, the stenotrophomonas maltophilia yg3 has a remarkable growth promoting effect on plants (such as hot peppers), pot experiments show that the stenotrophomonas maltophilia yg3 can remarkably increase the number of effective leaves, the plant height and the biomass of the hot peppers, and the stenotrophomonas maltophilia yg3 can be applied to the field of microorganisms. Particularly, the method has important application value in the fields of microbial plant growth promoters and green synthesis of IAA (indoleacetic acid).

The invention belongs to the technical field of microorganisms, and particularly relates to Nelsenia nielsenensis with a plant rhizosphere growth promoting effect and application of the Nelsenia nielsenensis. The bacterial strain is Niallia nealsonii BN5, and the preservation number of the bacterial strain is CGMCC (China General Microbiological Culture Collection Center) No.31380. The Nissenia nielsonii BN5 provided by the invention has a relatively large growth temperature range, is easy to adapt to various soil environments, and has the characteristics of dissolving phosphorus, producing IAA (Indoleacetic Acid) and the like; the invention provides a novel method for promoting plant growth in crop production, which is helpful for improving crop yield and quality and promoting sustainable agricultural development at the same time. The technology is not only limited to cucumbers, but also can be applied to planting of other crops, and important technical progress and economic benefits are brought to modern agricultural production. The method has a wide application prospect and is suitable for sustainable development and production optimization of modern greenhouse agriculture.

The invention relates to bacillus velezensis CGMCC (China General Microbiological Culture Collection Center) No.32593 as well as preparation and application of a microbial agent of the bacillus velezensis, and belongs to the technical field of microorganisms. The strain disclosed by the invention has the effects of dissolving phosphorus, dissolving potassium, fixing nitrogen and producing indoleacetic acid (IAA) at the same time. The method comprises the following steps: inoculating bacillus velezensis CGMCC No.32593 into an LB liquid culture medium, and fermenting by using a 5L fermentation tank to obtain the liquid microbial agent. The microbial agent provided by the invention is simple in preparation method and convenient for industrial production. By applying the liquid microbial agent, the plant height of tomatoes and the fresh weight of overground parts can be effectively increased, and the utilization rate of soil phosphorus in crop production is increased.

The invention relates to the technical field of biology, in particular to application of brassinolide in increasing the yield of lettuce latex. According to the invention, brassinolide is adopted as an active component and acts on lettuce plants, so that the yield of lettuce latex can be remarkably increased, and meanwhile, the contents of sucrose and isopentenyl pyrophosphate in lettuce are further remarkably increased. Compared with indoleacetic acid, the brassinolide provided by the invention is more suitable for improving the gum production performance of the plant lettuce, and the brassinolide and the indoleacetic acid are high in adaptability, so that a more excellent technical effect is obtained. In the use process, the use method of brassinolide is simple, the use amount is small, the function of remarkably improving the yield of lettuce latex, sucrose and isopentenyl pyrophosphate can be achieved by adopting brassinolide with low concentration, the cost is low, the effect is good, no new toxic or side effect is caused to the environment, and the brassinolide is suitable for application and popularization.

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 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 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 a bacillus marinus strain which is named as bacillus marinus sp., the strain is preserved in the China General Microbiological Culture Collection Center on March 28, 2023, the preservation number is CGMCC NO.26955, and the preservation number is CGMCC NO.26955. The bacillus marinus strain is named as bacillus marinus sp. The 16S rRNA nucleotide sequence of the strain is as shown in SEQ ID NO: 1. The strain disclosed by the invention has saline-alkaline tolerance and saline-alkaline reduction capabilities, also has multiple functions of fixing nitrogen, producing IAA (Indoleacetic Acid), promoting plant growth and the like, and can promote the growth of plants under saline-alkaline stress conditions by generating volatile acidic metabolites. The invention provides application of the bacillus marinus strain. The strain can be used for reducing salt and alkali in saline-alkali soil, increasing the content of available nitrogen elements in soil and promoting plant growth. The strain provided by the invention has wide application prospects in the aspects of improvement of saline-alkali stress resistance and production capacity of plants, improvement of saline-alkali soil, ecological environment protection and the like, and can be prepared into microbial fertilizers and microbial soil conditioners with plant growth promotion and saline-alkali soil improvement effects.

The invention relates to the technical field of microorganisms and particularly discloses paenibacillus mucilaginosus as well as a microbial agent and application thereof. The preservation number of the paenibacillus mucilaginosus N-002 is CGMCC (China General Microbiological Culture Collection Center) No.32752, and the preservation number of the paenibacillus mucilaginosus N-002 is CGMCC No.32752. The paenibacillus mucilaginosus N-002 provided by the invention can produce a urease inhibitor and indoleacetic acid at high yield and has no denitrification effect, the urease inhibitor produced by the paenibacillus mucilaginosus N-002 can reduce the urease activity of soil, significantly reduce the ammonia emission and nitrous oxide emission of the soil, especially after a nitrogen fertilizer is applied, is beneficial to soil nitrogen element maintenance, improves the fertilizer efficiency of the nitrogen fertilizer, and has a good application prospect. Meanwhile, the influence of emission of ammonia and nitrous oxide on the environment is reduced; the strain has no denitrification effect, and can increase the proportion of non-denitrifying bacteria in soil and reduce the denitrification effect of the soil after being applied to the soil, so that the emission of nitrous oxide in the soil is reduced, and environmental protection is facilitated.

The invention relates to a plant growth-promoting rhizobacteria. The preservation number of the plant growth-promoting rhizobacteria is GDMCC No: 65494. Through rhizosphere soil microorganism sampling of Gannan navel oranges, the strain G41 with the characteristics of producing indoleacetic acid, producing siderophores and solubilizing phosphorus is successfully separated out. Furthermore, pot experiments verify that the strain group is inoculated, so that the plant height, stem diameter, biomass, chlorophyll content and antioxidant enzyme activity of navel orange seedlings are increased, and the strain has an excellent growth promoting effect. Through strain identification, the strain is formally named as the bacillus subtilis G41, and the bacillus subtilis G41 is named as the bacillus subtilis G41. In particular, it is worth mentioning that the strain has rich gene resources, 32 genes related to growth promoting characteristics are excavated from the gene level, and the genes are widely distributed in key processes such as indoleacetic acid biosynthesis, siderophore biosynthesis and transport and phosphorus circulation.

The invention belongs to the technical field of agricultural microorganisms, and particularly relates to rice endophytic sphingosine vector SY02 and application thereof. The preservation number of the rice endophytic sphingobium yanoikuyae SY02 provided by the invention is CCTCC (China Center For Type Culture Collection) NO: M2026182, and the sphingobium yanoikuyae SY02 has the functions of producing indoleacetic acid, promoting plant growth and seed germination, promoting adventitious bud proliferation of tissue culture seedlings and relieving browning. The sphingosine vector bacterium and the microbial agent prepared through strain fermentation have the advantages of being green, safe, efficient, long-acting and the like, and have good application prospects in the aspects of promoting plant growth and seedling breeding.

The invention belongs to the technical field of microorganisms, and particularly relates to an arthrobacter strain and application thereof. The invention provides an arthrobacter strain Arthrobacter pokaliiC2, which is preserved in the China General Microbiological Culture Collection Center (CGMCC) on September 10, 2024, the preservation date is CGMCC No.31933, and the preservation number is CGMCC No.31933. The arthrobacter strain provided by the invention has the advantages that the arthrobacter strain can be used for preparing a bacterial strain; the arthrobacter strain C2 disclosed by the invention has a relatively strong function of producing indoleacetic acid, and the content of indoleacetic acid in plants can be increased, so that the stress resistance of the plants is improved; dissolution of insoluble phosphorus and potassium in soil can be promoted, soil nutrients are improved, plant growth is promoted, and plant quality is improved; meanwhile, the arthrobacter strain C2 has a certain antagonistic effect on bitter gourd fusarium wilt pathogenic bacteria and can be used for preventing and treating bitter gourd fusarium wilt.

The invention discloses bacillus amyloliquefaciens and application of the bacillus amyloliquefaciens in promoting growth of plants in salinized land. The strain is preserved in Guangdong Microbial Culture Collection Center on June 24, 2025, and the preservation number is GDMCC NO: 67014. The bacillus amyloliquefaciens R1 obtained by screening is a high-yield IAA (Indoleacetic Acid), is a bacterial strain capable of remarkably promoting the growth of plants in the salinized land, and has good development potential and application value for promoting the growth of the plants in the salinized land. The problem that in the prior art, microbial strains with the rhizosphere growth-promoting and saline-alkaline-tolerant functions are lacked is solved.

The invention belongs to the field of microorganisms, and particularly relates to bacillus velezensis with high stress resistance, bacterial powder, a biocontrol microbial inoculum and preparation and application thereof. The bacillus velezensis is bacillus velezensis Shannan.BV80-12 and is preserved in the China Center for Type Culture Collection, and the preservation number of the bacillus velezensis is CCTCC (China Center for Type Culture Collection) NO: M 2024386. The bacillus velezensis Shannan.BV80-12 provided by the invention has relatively strong tolerance to drought, and has the capability of producing indoleacetic acid (IAA). Meanwhile, the bacterial strain also has a broad-spectrum antibacterial ability, and has a relatively strong inhibition effect on fusarium graminearum, alternaria alternata, magnaporthe oryzae, bipolaris maydis, exserohilum turcicum, sclerotinia sclerotiorum, physalospora piricola, alternaria solani and citrus brown rot pathogen.

The invention belongs to the technical field of microorganisms, and particularly discloses a strain of Paenibacillus amyloliquefaciens (Paenibacillus amyloliquefaciens) capable of increasing the yield of tea leaves and improving the quality of the tea leaves and an application of the Paenibacillus amyloliquefaciens (Paenibacillus amyloliquefaciens) capable of increasing the yield of the tea leaves and improving the quality of the tea leaves. The preservation number of the chitin-dissolving paenibacillus is CCTCC NO: M 20241893, and the strain has efficient potassium-dissolving activity, strong organophosphorus-dissolving activity and IAA (Indoleacetic Acid) production capacity, and can degrade chitin by secreting chitinase, so that the strain has certain inhibition capacity on fungal pathogenic bacteria, and can be applied to the field of agricultural production. The bacterial strain can increase the content of rapidly available phosphorus and rapidly available potassium in tea garden soil, increase the total potassium content of tea leaves, increase the density of tea buds and the yield of the tea leaves, increase the content of free amino acids in the tea leaves and reduce the content of tea polyphenols and the phenol-ammonia ratio of the tea leaves, so that the quality of the tea leaves is improved.