294 results about "Citrus canker" patented technology

The invention relates to citrus endophytic actinomycetes with antibacterial activity on various plant pathogens, belonging to the technical field of microbes. The endophytic actinomycetes are Streptomyces sp. R1020 which was registered and collected in China General Microbiological Culture Collection Center on March 17, 2014 with the collection number of CGMCC No. 8923. The strain R1020 has relatively good inhibitory effect on citrus anthrax bacteria, citrus bacterial canker disease bacteria, citrus penicillium italicum, citrus penicillium digitatum, bayberry deadwood disease bacteria, bayberry acicola, bayberry anthrax bacteria, loquat anthrax bacteria, loquat leaf spot fungi, loquat ringspot pathogenic bacteria, tomato alternaria solani, botrytis cinerea, colletotrichum orbiculare, tea tree anthrax bacteria and elsinoeleucospila and has the potential of being developed into biological pesticides.

The invention provides an application of amaranthus in plant disease prevention and treatment, wherein amaranthus leaves are taken as the raw material and extracted by an organic solvent to obtain an extract, acidovorax avenae subsp.citrulli, xanthomonas axonopodis pv. Citri and rhizoctonia solani are selected as sites of action, and research on indoor bacteriostasis effect and in-vitro and pot culture control effects is performed to find that the amaranthus leaf extract has an inhibition effect on acidovorax avenae subsp.citrulli, xanthomonas axonopodis pv. Citri and rhizoctonia solani; and the in-vitro and pot culture tests also indicate that the amaranthus leaf extract has certain prevention and treatment effects on acidovorax avenae subsp.citrulli, xanthomonas axonopodis pv. Citri and rhizoctonia solani; and all the facts show that the amaranthus has prevention and treatment effects on the plant diseases in addition to edible and medical values. The research discovers and expands the functions of the vegetable, and simultaneously provides a new train of thought and a new way for studying and developing biopesticide for preventing and treating the plant diseases.

The invention discloses application of CsLYK gene and an encoded protein thereof in improving resistance to citrus canker. The encoded protein of the CsLYK gene is a citrus LysM-like receptor proteinphosphokinase, and is named CsLYK protein. The nucleotide sequence of the CsLYK gene is a nucleotide sequence shown in SED ID No. 1; the protein sequence of the CsLYK gene is an amino acid sequence shown in SED ID No. 2. The invention also protects a breeding method of citrus resisting bacterial canker, and the method comprises following steps of integrating a citrus LysM-like receptor protein phosphokinase-encoding gene into a citrus through an overexpression vector to effectively improve citrus resistance to bacterial canker. The invention has great application value for breeding of citrus resisting bacterial canker; thereby laying the foundation of genetic breeding of citrus resisting canker, and vigorously promoting the development and application of citrus resisting canker genetic engineering.

The invention relates to the technical field of microorganism application, in particular to a bacillus subtilis strain and an application thereof. The bacillus subtilis strain is preserved in China General Microbiological Culture Collection Center (CGMCC) on Jan 22rd, 2018 with the preservation number of CGMCC NO.15250. The strain provided by the invention can prevent and treat multiple fungal andbacterial diseases and are applied to Chinese cabbage soft rot, citrus canker, tobacco wildfire, tobacco bacterial wilt and rice bacterial leaf blight at present.

Non-toxic, naturally derived and economical compositions for treating and preventing bacterial or fungal disease in plants, especially citrus canker, wherein such compositions include various combinations of d-limonene, wax and monohydric alcohol are provided. Methods for making and using such compositions are also provided.

Cysteine amino-acid compound (or its analogues) used in the disruption of microbial biofilms by treatment of prevention of diseases generated by phytopathogenic bacteria attacking plants of agricultural interest represented by an innovative solution within the agriculture sector, where said compound can be used in the pharmacological form, as a drug associated with fertilizer for the combat of bacterial diseases which form microbial biofilms, such as citrus variegated chlorosis (CVC), citric canker’, huanlongbing (HLB) disease or ‘greening’, amongst other, which inventive concept, as such, never before completed, resides in the benefit deriving from the cysteine amino-acid, and all of its analogues, in the inhibitory action and progressive disruption of the microbial biofilm thus liberating the nutritive flux and hydration of the root to the upper part of the plant and the subsequent regression of the disease symptoms, with the added advantage that the cysteine amino-acid compound is non-toxic, guaranteeing healthy production of foods by plants of agricultural interest that are totally healthy, without toxic residues in their composition, as well as when said compound is applied there is risk to the environment due to the rapid absorption, notably within the area in which it is applied, where such predicates of disease combat, with the exception of toxic collateral effects still guarantee that the final crop and harvest will have a higher productivity per hectare.

The invention discloses a bactericidal composition containing diacetone amine copper oxalate and triazole bactericides. The bactericidal composition comprises a first active ingredient, namely diacetone amine copper oxalate, and a second active ingredient, namely one of the triazole bactericides, wherein a weight ratio of the first active ingredient to the second active ingredient is (1:15)-(15:1), and the sum of the content of the first active ingredient and the second active ingredient is 5-90 percent of the total weight of the bactericidal composition. The composition can be prepared into agriculturally allowable forms such as water dispersible granules, wettable powder, dispersible oil suspended agents or micro emulsion. The bactericidal composition disclosed by the invention effectively solves the problem that the effect of eradicating crop diseases by singly using the diacetone amine copper oxalate or the triazole bactericides is not ideal, has an obvious synergistic effect and is high in crop safety. The bactericidal composition disclosed by the invention has good effects of controlling altermaria leaf spot and brown spot of apples, bacterial canker diseases and anthracnose of citruses, downy mildew, powdery mildew and angular leaf spot of cucurbites, false smut, sheath blight and blast of rice, and black point and leaf spot diseases of bananas.