158 results about "Colletotrichum sp." patented technology

The invention discloses bacillus velezensis GX0003742 and biocontrol application thereof, and belongs to the technical field of microorganism application. The invention discloses bacillus velezensis GX0003742 with a broad-spectrum bacteriostatic effect, which is preserved in the China General Microbiological Culture Collection Center, the preservation address is No.3, No.1 yard, Beichen West Road, Chaoyang District, Beijing, the preservation date is September 14, 2024, and the preservation number is CGMCC No.31981. The bacillus velezensis GX0003742 has the advantages that the bacillus velezensis GX0003742 can be used for preparing the bacillus velezensis GX0003742; the strain can obviously inhibit growth of colletotrichum basjoo mycelia and obviously reduce occurrence of postharvest diseases of bananas, has an inhibiting effect on various pathogenic bacteria, has a good insecticidal effect on auricular bean root-knot nematode, and provides a new strain resource for biological prevention and control of plant diseases.

The invention provides bacillus velezensis NR10, and the preservation number of the bacillus velezensis NR10 is CGMCC (China General Microbiological Culture Collection Center) NO.31771. The bacillus velezensis NR10 is a strawberry endophyte, has good bacteriostatic activity, has good antagonistic action on botrytis cinerea, fusarium oxysporum, colletotrichum gloeosporioides, colletotrichum oxysporum, trichoderma harzianum, trichoderma longibrachiatum and the like, is a potential biological preparation for preventing and treating strawberry diseases and the like, and has broad application prospects. And the bacteriostatic action of the bacillus velezensis NR10 has thermal stability. In addition, the bacillus velezensis also has good capacities of producing siderophores, fixing nitrogen and dissolving potassium, producing protease and cellulase and the like. The bacillus velezensis NR10 provided by the invention has wider-spectrum disease resistance, wide development space and good development and application prospects.

The invention belongs to the field of microbial secondary metabolites, and particularly relates to bacillus velezensis as well as metabolites and application thereof. The bacillus velezensis is classified and named as Bacillus velezensis Z-1, and is preserved in the Guangdong Microbial Culture Collection Center, the preservation number is GDMCC 64975, and the preservation date is August 12, 2024. The bacillus velezensis Z-1 provided by the invention has a relatively strong inhibition effect on mango colletotrichum gloeosporioides in vitro, and the bacteriostasis rate of fermentation liquor can reach 73.33%. The prepared Z-1 bacterial liquid is used for soaking mango fruits, the bacterial liquid can effectively prolong the shelf life of the picked mangoes, the storage period can reach 24 days, in addition, the softening rate of the mangoes is obviously reduced, the fruit skin is full, the mangoes are fresh and turquoise, and the sense organ and the storage quality are maintained at a relatively high level. The method provides a certain new theoretical basis for disease control, storage and fresh-keeping of the harvested mangoes.

The invention discloses a Burkholderia gladioli (Burkholderia gladioli) CT-5 strain and an application of the Burkholderia gladioli CT-5 strain, and relates to the technical field of microorganisms. The strain is preserved in the China Center for Type Culture Collection, the preservation number is CCTCC NO: M20242732, and the preservation date is December 05, 2024. The Burkholderia gladioli (Burkholderia gladioli) CT-5 provided by the invention has a remarkable prevention and treatment effect (Plt, Plt) on idesia root rot caused by Fusarium solani (Fusarium solani), and the Burkholderia gladioli (Burkholderia gladioli) CT-5 has a remarkable prevention and treatment effect on idesia root rot caused by Fusarium solani (Busarium solani). The compound has the advantages that the compound can be used for inhibiting pathogenic bacteria of various plants, and the compound can be used for inhibiting pathogenic bacteria of various plants, such as Schizophyllum commune, Diaporthe erens, Colletotrichum acutatum and the like, and has a remarkable inhibiting effect on other various plant pathogenic bacteria such as the Schizophyllum commune, the Diaporthe erens, the Colletotrichum acutatum and the like. In a pot experiment, the biomass, soil nutrients, SOD, POD and CAT enzyme activities of idesia polycarpa seedlings in a CT-5 treatment group are remarkably improved compared with those of a pathogenic bacteria control group (FP) (Plt; 0.05), which indicates that the strain can promote plant growth and activate the activity of defensive enzyme in the body, so that effective control of idesia root rot is realized, and powerful theoretical basis and technical support are provided for sustainable development of idesia.

The invention discloses bacillus amyloliquefaciens GX0003936 and application thereof, and belongs to the technical field of microorganism application. The invention discloses bacillus amyloliquefaciens GX0003936 with a broad-spectrum bacteriostatic effect, which is preserved in the China General Microbiological Culture Collection Center on March 26, 2025, and the preservation number of the bacillus amyloliquefaciens GX0003936 is CGMCC (China General Microbiological Culture Collection Center) No.33987. The bacterial strain has broad-spectrum antibacterial activity, can be used for remarkably inhibiting the growth of mycelia of colletotrichum musae and colletotrichum frutescens, and can be used for remarkably reducing the disease incidence rate of tropical fruits such as bananas, mangoes and the like in the postharvest storage period. Meanwhile, the strain shows a good inhibition effect on various plant pathogenic fungi, and has a potential broad-spectrum biocontrol effect.

The invention discloses burkholderia gladioli and an application of the burkholderia gladioli. The invention provides a Burkholderia gladioli HZX-8 strain, and the preservation number of the Burkholderia gladioli HZX-8 strain is CGMCC (China General Microbiological Culture Collection Center) No.33009. The Burkholderia gladioli HZX-8 strain has the advantages that the The invention also provides an application of the strain or a culture solution or a bacterial solution or a fermentation culture solution of the strain in preventing or treating plant walnut anthracnose and / or walnut branch blight. The Burkholderia gladioli HZX-8 strain disclosed by the invention has the advantages that the Burkholderia gladioli HZX-8 strain obtained by the invention shows a remarkable biological control potential in the aspects of preventing and treating the walnut anthracnose caused by the Colletotrichum guangyuanense and the walnut branch blight caused by the Diapotheca chaotianensis, and the Burkholderia gladioli HZX-8 strain can be used for preventing and treating the walnut branch blight caused by the Colletotrichum guangyuanense and the Burkholderia gladioli HZX-8 strain can be used for preventing and treating the walnut branch blight caused by the Diapotheca chaotianense.

The invention belongs to the field of microorganisms, and relates to bacillus velezensis A118 and application thereof. The bacillus velezensis A118 disclosed by the invention can resist saline and alkaline, and has a relatively good inhibition effect on colletotrichum capsici. The bacillus velezensis A118 disclosed by the invention also has relatively strong capability of producing cellulase, amylase, protease and indole-3-acetic acid (IAA) and has a relatively good growth promoting effect on chilies, 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 pepper diseases is reduced, the pepper growth is promoted, and the biocontrol bacterium has a good popularization value.

The invention discloses bacillus siamensis capable of antagonizing various phytopathogens and application of the bacillus siamensis. The preservation number of the bacillus siamensis A-2 is GDMCC (China General Microbiological Culture Collection Center) NO.64228. The bacillus siamensis A-2 has the advantages that the preservation number of the bacillus siamensis The strain has an obvious inhibition effect on Releasella syzygium jambos Indian niesia subspecies, pseudomonas solanacearum, fusarium solani, phomopsis, fusarium oxysporum, colletotrichum musae, colletotrichum laurosporum, fusarium fujikubin and fusarium sp. The gene clusters contain gene clusters for synthesizing plipastatin, abinogen, surfactin, siderophore, bacitracin, difixitin, butyrosidin A / B and some terpene compounds, and the gene clusters contain gene clusters for synthesizing plipastatin, abinogen, surfactin, siderophore, bacitracin, difixitin and butyrosidin A / B; the composition has a relatively good prevention and treatment effect (the relative prevention effect is 58.14%) on tomato bacterial wilt; and the strain has the capability of degrading tetracycline hydrochloride (the degradation rate in 3 days is 49.28%). Therefore, the bacillus siamensis A-2 has extremely high development and utilization value in agricultural production.

The invention belongs to the technical field of RNA biological prevention and treatment, and particularly relates to application of dsRNA of a targeting sphingolipid C-4 hydroxylase coding gene. The invention provides application of targeted sphingolipid C-4 hydroxylase coding gene dsRNA in prevention and treatment of crop anthracnose and / or preparation of products for prevention and treatment of crop anthracnose, and the targeted sphingolipid C-4 hydroxylase coding gene dsRNA is obtained by transcription of partial sequence of a sphingolipid synthetase coding gene CsSUR2. The targeting sphingolipid C-4 hydroxylase coding gene dsRNA is loaded on the nano layered double hydroxide, so that the pathogenicity of colletotrichum gloeosporioides and mango colletotrichum gloeosporioides can be obviously reduced, and the application prospect of preventing crop anthracnose is achieved.

The invention belongs to the technical field of plant disease prevention and treatment, and particularly relates to a biocontrol bacterium for preventing and treating idesia anthracnose, fermentation liquor, a biocontrol bacterium agent and application. According to the invention, a biocontrol bacterium is separated and screened from microbial resources on healthy idesia leaves, is classified and named as Bacillus velezensis, is preserved in China General Microbiological Culture Collection Center on March 28, 2025, and has a preservation number of CGMCC No.34038; the biocontrol bacterium provided by the invention has a good antagonistic effect on colletotrichum causing idesia anthracnose, melanospora causing idesia leaf spot, botrytis cinerea, fusarium oxysporum, alternaria alternata and pestalotiopsis which can cause plant diseases, and also has a good antagonistic effect on colletotrichum causing idesia anthracnose, melanospora causing idesia leaf spot, fusarium oxysporum, alternaria alternata and pestalotiopsis. The biocontrol bacterium, the fermentation broth and the biocontrol inoculant provided by the invention have potential application prospects in prevention and treatment of idesia anthracnose.

The invention discloses bacillus velezensis LYG42 and application thereof, and belongs to the technical field of biology. On one hand, the invention provides the bacillus velezensis LYG42, and on the other hand, the invention provides application of the bacillus velezensis LYG42 in inhibition of colletotrichum gloeosporioides. The bacillus velezensis LYG42 obtained by separation can be fermented by utilizing squid processing leftovers, and the fermentation liquor obtained by fermentation can obviously inhibit colletotrichum gloeosporioides, so that a strain resource is provided for biological control of anthracnose, and a theoretical basis is provided for development of green biopesticide.

The invention belongs to the field of comprehensive utilization of palm leaves, and particularly relates to a natural preservative containing palm leaf extract as well as a preparation method and application of the natural preservative. According to the natural preservative disclosed by the invention, sunflower discs, betel nut leaves, mint leaves, oil-tea cakes and barley are added into lactobacillus plantarum to prepare fermentation liquor, the fermentation liquor is sterilized, and then palm leaf extract and purslane extract are added, so that the antibacterial rate on mango colletotrichum gloeosporioides, litchi fruit colletotrichum gloeosporioides and strawberry colletotrichum gloeosporioides can be remarkably increased; the preservative can effectively prevent fruits from decaying and deterioration, can effectively prolong the storage life of fruits when being used for preservation and fresh keeping of fruits, has small toxic and side effects, and greatly improves the safety.

The invention discloses an efficient broad-spectrum biocontrol bacterium pseudomonas FM36 and application thereof. The wheat pseudomonas is a strain FM36, is classified and named as Pseudomonas siliginis, is preserved in the China General Microbiological Culture Collection Center (CGMCC), and has a preservation number of CGMCC NO.32868. The invention further discloses a preparation method of the high-efficiency broad-spectrum biocontrol bacterium pseudomonas FM36. The invention further discloses an application of the high-efficiency broad-spectrum biocontrol bacterium pseudomonas FM36, and the application of the high-efficiency broad-spectrum biocontrol bacterium pseudomonas FM36. The invention further provides application of the wheat pseudomonas FM36 strain in promoting tomato growth and preventing and treating plant viruses and pathogenic fungi. The wheat pseudomonas provided by the invention has a promoting effect on the growth and yield increase of tomatoes, and has obvious antagonism and obvious antagonism on pathogenic fungi such as tobacco mosaic virus (TMV), chilli vein mottle virus (ChiVMV), rhizoctonia solani, Magnaporthe oryzae, alternaria tenuissima, colletotrichum sp.sp.cubense, fusarium oxysporum f.sp.cubense and the like, and the wheat pseudomonas has an obvious antagonism effect on pathogenic fungi such as the tobacco mosaic virus (TMV), the chilli vein mottle virus (ChiVMV), the rhizoctonia solani, the Magnaporthe oryzae, the alternaria tenuissima, the colletotrichum sp.sp.cubense and the like.

The invention discloses bacillus and application thereof, and belongs to the technical field of microorganisms, the bacillus is preserved in China Center for Type Culture Collection, the preservation address is Wuhan University, Wuhan, China, the preservation number is CCTCC NO: M 20242290, and the preservation date is October 22, 2024. The composition can effectively inhibit vegetative growth and vegetative propagation of pathogenic bacteria such as colletotrichum gloeosporioides and paecilomyces japonicus, and has a good and broad-spectrum control effect on various pathogenic fungi. Bacteriostatic components contained in fermentation filtrate of the bacillus can remarkably inhibit germination of colletotrichum spruce spores and formation of appressorium. And the bacillus has a good prevention and treatment effect on the citrus huanglongbing.

The invention provides a stenotrophomonas sp. CLX-022 strain which has a good antagonistic effect on colletotrichum gloeosporioides and fusarium fusiforme, and the strain is preserved in China Center for Type Culture Collection (address: Wuhan University, Wuhan, China) and has a good antagonistic effect on colletotrichum gloeosporioides and fusarium fusiforme. The strain is preserved in China Center for Type Culture Collection (CCTCC) NO: M20252110 on September 24, 2025, the postal code is 430072, and the preservation number is CCTCC NO: M20252110. The 16S rDNA (ribosomal deoxyribonucleic acid) sequence of the strain is as shown in SEQ ID NO. 1. The stenotrophomonas CLX-022 strain is high in antibacterial property and can be used for preparing a microbial preparation for treating / preventing strawberry anthracnose and rice bakanae disease.

The invention discloses application of a CsNOMT gene and sakuranetin in prevention and treatment of tea tree anthracnose. It is found for the first time that methyltransferase encoded by the tea tree-derived CsNOMT gene can efficiently catalyze naringenin to be converted into sakuranetin, the endogenous phytoalexin level of a tea tree is remarkably improved, and then the disease resistance of the tea tree-derived CsNOMT gene to Colletotrichum carolinae is enhanced. The silence of the CsNOMT gene can reduce the sakuranetin content by 30-40%, resulting in the increase of the scab area; and by overexpressing the gene, the sakuranetin content is increased by 30%, and the scab area is remarkably reduced. In addition, the growth of colletotrichum can be effectively inhibited by exogenously spraying 0.05-0.3 mM of sakuranetin, and the optimal concentration is 0.1-0.3 mM. The invention provides a new strategy for green prevention and control of tea tree anthracnose, and has the characteristics of high efficiency, safety and environmental friendliness.

The invention provides an endophyte Gliocladium roseum NG-12, which is named as Gliocladium roseum NG-12, and the preservation number of the endophyte Gliocladium roseum NG-12 is CGMCC (China General Microbiological Culture Collection Center) No. 41801. The endophyte Gliocladium roseum NG-12 provided by the invention has good root-knot nematode killing activity and antibacterial activity, has a good antagonistic effect on various plant pathogens such as fusarium oxysporum, colletotrichum gloeosporioides and colletotrichum gloeosporioides, is a potential biological preparation for preventing and treating root-knot nematode diseases, fusarium wilt, anthracnose and the like, and also has the effects of dissolving potassium, fixing nitrogen, dissolving phosphorus, preventing and treating the root-knot nematode diseases and the like. The capability of producing siderophore, protease and cellulase is realized. The gliocladium roseum provided by the invention has a wide development space and a good development and application prospect.

The invention discloses bacillus subtilis Bs1 as well as an antagonistic substance and application thereof. According to the invention, Bs1 with antagonism on colletotrichum gloeosporioides is separated and screened for the first time, an antagonistic substance is clear as Bs1 serine-producing protease Vpr, a Bs1 bacteriostasis mechanism and biological control potential excavation are analyzed in a multi-omics manner, a peripheral colonization rule of Bs1-Rif is clear, and an indoor control strategy of the strain Bs1 on cunninghamia lanceolata anthracnose is optimized. When the strain Bs1 is applied on the day when pathogenic bacteria are inoculated, a certain prevention and treatment effect is achieved, and it is indicated that the strain Bs1 can rapidly occupy the ecological niche; the average antibacterial rate of the strain Bs1 can reach 66.69%. The biocontrol strain and theoretical basis are provided for prevention and control of Chinese fir diseases, the application of biological prevention and control in forestry is promoted, the interaction mechanism of biocontrol bacteria and pathogenic bacteria can be deeply understood, and the sustainable development requirement of modern forestry is met.

The invention belongs to the technical field of fermentation engineering and microbial disease control, and particularly relates to bacillus velezensis XZT106 and application thereof. The invention provides bacillus velezensis XZT106, the preservation number of the bacillus velezensis XZT106 is CCTCC (China Center For Type Culture Collection) M 2025518, and tests show that the bacillus velezensis XZT106 can be used for treating phellinus noxius, botrytis cinerea, colletotrichum gloeosporioides, alternaria tenuissima, fusarium oxysporum, phytophthora capsici and fusarium solanum s.

The invention belongs to the technical field of biopesticides, and relates to a biocontrol fungus and a biocontrol inoculant for preventing and treating anthracnose of camellia oleifera and application of the biocontrol fungus and the biocontrol inoculant. According to the invention, a CV strain of coniochaeta velutina is separated and screened from microbial resources on healthy tea-oil tree leaves, and the CV strain is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CGMCC No.41439. The invention further discloses a preparation method of the CV strain of the coniochaeta velutina and the application of the CV strain of the coniochaeta velutina. The CV strain provided by the invention has a good antagonistic effect on colletotrichum gloeosporioides, alternaria alternata and botryosphaeria dothidea, and particularly, the bacteriostasis rate of the CV strain on the colletotrichum gloeosporioides, which is a main pathogenic bacterium of camellia oleifera anthracnose, reaches 67.44%. The biocontrol fungus CV strain and the biocontrol inoculant provided by the invention not only can be used for preventing and treating camellia oleifera anthracnose, but also have potential application prospects in the aspect of preventing and treating plant diseases caused by colletotrichum gloeosporioides, alternaria alternata or botryosphaeria dothidea.

The invention belongs to the technical field of biological control, and particularly relates to bacillus velezensis JH-25 and application thereof. The invention provides a bacillus velezensis JH-25, and the preservation number of the bacillus velezensis JH-25 is GDMCC No: 65188. The bacillus velezensis JH-25 can be used for preparing bacillus velezensis. The bacillus velezensis JH-25 provided by the invention is obtained by screening konjac tubers as samples, is an endophyte of konjac, and has biocontrol and growth promoting effects. Results of the embodiment show that the bacillus velezensis JH-25 provided by the invention can inhibit colletotrichum gloeosporioides, colletotrichum siamensis, colletotrichum gloeosporioides, corynespora cassiicola, soybean purpura and colletotrichum aceae, prevent and treat various diseases such as anthracnose, brown spot, leaf spot, purpura, stem rot and canker, and promote plant growth.

This invention discloses the CAPE1 peptide at the C-terminus of the PtPR1 protein and its applications. There are three types of CAPE1 peptides in the PtPR1 protein: PtPR1f (amino acid sequence shown in SEQ ID NO.1), PtPR1j (amino acid sequence shown in SEQ ID NO.2), and PtPR1l (amino acid sequence shown in SEQ ID NO.3). Experimental results show that the three CAPE1 peptides at the C-terminus of the PtPR1 protein provided by this invention can induce an immune defense response in woody plants at low concentrations. The use of these three CAPE1 peptides can also significantly improve the disease resistance of woody plants to *Colletotrichum gloeosporioides*, *Pseudomonas aeruginosa*, *Botrytis cinerea*, or *Phytophthora spp.*, without inhibiting the growth of these pathogens. Therefore, it can be applied to the prevention and control of woody plant diseases, providing a new approach to improving the disease resistance of woody plants and showing broad application prospects in the green control of woody plant diseases.

The application relates to the field of agricultural disease control technology, and particularly relates to the use of indole compounds and pharmaceutically acceptable salts, solvates, crystal forms, prodrugs, stereoisomers and tautomers thereof for preparing a medicine for inhibiting pathogenic key protein kinase CgSlt2 of pathogenic fungi. The application first proposes a new type of CgSlt2-targeted inhibitor, specifically, indole compounds ((S)-N-(1-(1H-indol-3-yl)-4-(methylamino)-4-oxobutan-2-yl)-8-bromo-1,6-naphthyridine-2-carboxamide) and ((S)-N-(2-((1H-indol-3-yl)-1-(methylamino)-1-oxopropyl)-8-bromo-1,6-naphthyridine-2-carboxamide) are used as CgSlt2 inhibitors, have the characteristics of high target specificity and high activity, and exhibit excellent pathogenicity inhibition of a strain of the complex group of Colletotrichum gloeosporioides.

The present invention provides a Bacillus tequilensis ZW-35 and its application, which relates to the technical field of microbial control. The Bacillus tequilensis ZW-35 is preserved in the China General Microbiological Culture Collection Center, and its taxonomic name is Bacillus tequilensis Bacillus tequilensis , and the preservation number is CGMCC No. 32878. The volatile substances in the metabolic process of Bacillus tequilensis ZW-35 can effectively inhibit the growth of Colletotrichum; and the volatile substances have high diffusion ability in air and soil pores. In the prevention and control of fruit diseases, the volatile substances can avoid direct contact with the fruits and will not leave residues on the fruit surface, thus avoiding the potential risks brought by direct contact.

The invention discloses a hydrazide compound taking syringic acid as a lead as well as a preparation method and application of the hydrazide compound, and a biological activity test result shows that all the compounds have excellent and broad-spectrum antibacterial activity on tested plant pathogenic fungi. Wherein the inhibition effect of most target compounds on plant pathogenic fungi is superior to that of positive control boscalid, the compound 11 has the best antibacterial effect on rhizoctonia solani, fusarium graminearum, alternaria solani, colletotrichum frutescens and colletotrichum sorghum, and EC50 values of the compound 11 are respectively 0.258 [mu] g / mL, 0.679 [mu] g / mL, 0.424 [mu] g / mL, 0.384 [mu] g / mL and 0.975 [mu] g / mL; for colletotrichum gloeosporioides, the compound 12 has the best antibacterial effect, and the EC50 value of the compound 12 is 0.989 mu g / mL; and secondly, a compound 11 with an EC50 value of 1.248 [mu] g / mL. The hydrazide compound prepared by taking syringic acid as a lead has excellent, broad-spectrum and efficient plant pathogenic microorganism resisting activity, and can be used for preventing and treating plant diseases caused by plant pathogenic microorganisms.

The invention provides an application of a CsSCPL36 gene, an encoded protein or a derivative thereof in regulating resistance of plants to anthracnose, and belongs to the technical field of biology. The invention provides a CsSCPL36 gene, an encoding protein of the CsSCPL36 gene or an application of a gene derivative containing the CsSCPL36 gene in regulation and control of resistance of plants to anthracnose and / or cultivation of anthracnose-resistant plant varieties. The CsSCPL36 gene or the CsSCPL36 gene coding protein can be used for improving the resistance of plants to anthracnose through forward regulation and control. According to the embodiment of the invention, by screening the influence of overexpression of different genes on anthracnose resistance, a result shows that overexpression of the CsSCPL36 gene can effectively improve the anthracnose resistance of the citrus, and a new way is provided for improving the resistance of the citrus to colletotrichum gloeosporioides.

The invention discloses paenibacillus FHY1 and application thereof, and belongs to the field of microorganisms. A strain of paenibacillus FHY1 is screened from Xinjiang populus euphratica juice, and experimental verification shows that a liquid culture of the paenibacillus FHY1 strain provided by the invention has a remarkable inhibition effect on magnaporthe oryzae, the bacteriostasis rate can reach 84%, and the inhibition rate on magnaporthe oryzae spore germination is 92%. And the rice growth can be promoted under the conditions of 150mM NaCl and 250mM NaCl. Meanwhile, the strain also has a good inhibition effect on pyricularia grisea, fusarium oxysporum, fusarium graminearum, sclerotinia sclerotiorum and colletotrichum gloeosporioides. Therefore, the invention provides a new strain with a good control effect on pathogenic fungi, and meanwhile, the growth and development of rice are remarkably promoted in a salt stress environment.

The present application provides a novel structure of thiophene compound, the compound has significant inhibitory effect on spore germination and appressorium formation of various plant pathogenic fungi and oomycetes (such as Pyricularia oryzae, Colletotrichum gloeosporioides, Gibberella, Phytophthora, Phytophthora capsici), which can be used for preventing and treating plant diseases caused by fungi and / or oomycetes.

The invention belongs to the technical field of pesticides, and relates to 11 bactericide compositions for mainly preventing and treating crop diseases caused by pyricularia oryzae and colletotrichum gloeosporioides. The compound YJY-22 provided by the invention is novel in structure and unique in action mode, and has no cross resistance with isoprothiolane, fenoxanil, pyraclostrobin, tricyclazole, azoxystrobin, mancozeb, captan, difenoconazole, prochloraz, chlorothalonil and tebuconazole. As the action mechanism of the compound YJY-22 is different from that of the medicament, and the compound YJY-22 and the medicament have no cross resistance, the compound YJY-22 and the medicament are compounded, so that the sterilization range can be expanded, the sterilization effect can be enhanced, the drug resistance of phytopathogen can be delayed, the safety to crops is good, the prevention and control spectrum is expanded, and the requirements of pesticide reduction and synergism are met.

The invention belongs to the technical field of RNA biological prevention and treatment, and particularly relates to application of dsRNA of a targeted actin coding gene. The invention provides application of dsRNA of a targeted actin coding gene in prevention and treatment of crop anthracnose, the nucleotide sequence of the dsRNA is shown as SEQ ID No.2, the dsRNA is obtained by transcription of a target gene segment of a colletotrichum CaACTIN gene, and the nucleotide sequence of the target gene segment of the colletotrichum CaACTIN gene is shown as SEQ ID No.1. The dsRNA is loaded by a nano-material layered double hydroxide, so that the dsRNA can be applied to prevention and treatment of crop anthracnose, and the target gene segment of the colletotrichum CaACTIN gene is obtained through transcription of the target gene segment of the colletotrichum CaACTIN gene and the target gene segment of the colletotrichum CaACTIN gene. The pathogenicity of mango colletotrichum gloeosporioides and banana colletotrichum gloeosporioides can be obviously reduced, and the application prospect of efficient and targeted control of crop anthracnose is achieved.