9 results about "Cercospora" patented technology

The application discloses a ZmSKI3 gene related to corn disease resistance and application thereof, and belongs to the technical field of biotechnology.The ZmSKI3 gene is identified in corn for the first time, and it is proved that the ZmSKI3 gene controls the resistance of corn to cercospora leaf spot disease, specifically, the expression of the ZmSKI3 gene is inhibited, and the resistance of corn to the cercospora leaf spot disease can be enhanced; the overexpression of the ZmSKI3 gene can weaken the resistance of corn to the cercospora leaf spot disease.The mutation of the ZmSKI3 gene obtained by the application can significantly activate the disease resistance immune response of corn, is a new corn disease resistance breeding gene resource, and provides an important molecular target for the selection of resistant corn.

More effective breeding against Cercospora leaf spot or the development of new resistant lines is possible via the provision of Cercospora resistance mediated genes according to the present application; in particular, the dominant resistance effect in the target plant is caused by the properties of the single identified genes. The Cercospora resistance mediated genes as well as the aforementioned embodiments of the present application provide additional applications, for example the use of alleles of the resistance genes in cis- or transgenetic approaches with the aim to develop new resistant cultivars.

The invention discloses a method for improving black spot resistance of crops by raffinose, which comprises the following steps: selecting healthy and consistent seedling-stage plants of the crops, and culturing; raffinose solution preparation: preparing raffinose solutions with different concentrations, respectively spraying the raffinose solutions on the plants in the step 1, spraying the raffinose solutions once every 24 hours in a laboratory scene, spraying the raffinose solutions twice in total, spraying the raffinose solutions once every 5 days in a field scene, spraying the raffinose solutions three times in total, and spraying clear water in a contrast manner; after spraying in the step 2 is finished for 24 hours, inoculating alternaria alternata to the control plants and the treated plants, comparing disease phenotypes under different raffinose concentrations, and screening the concentration with the optimal effect; 3, according to the result of the step 3, determining that the spraying effect of the raffinose solution with the concentration of 2.4% is optimal, selecting the raffinose solution with the concentration to be sprayed on the plants, the spraying method is the same as that of the step 2, performing artificial inoculation 24 hours after the last time of spraying is finished, observing the disease phenotype, and counting the disease state. After being treated by the 2.4% raffinose solution, the disease spot areas of the tea chrysanthemum, the apples and the tomatoes are obviously reduced.

The invention discloses a 2-cyano-3-amino-3-substituted phenyl acrylate compound and application of the 2-cyano-3-amino-3-substituted phenyl acrylate compound in prevention and treatment of fungal diseases of crops, and belongs to the field of pesticides. The structural formula of the 2-cyano-3-amino-3-substituted phenyl acrylate compound is shown as a formula (I), and the compound has good broad-spectrum bactericidal activity; the compound can be used for preventing and treating plant fungal diseases, especially plant fungal diseases caused by fungi such as pyrethrospora, chlorosclerotium, fusarium, acrocyst, colletotrichum, cercospora, verticillium, black beetle, alternaria, bipolaris, rhizoctonia, bipolaris, botrytis, puccinia, coracosporium and corynespora, and can be used for preventing and treating plant fungal diseases caused by fungi such as pyrethrospora, chlorosclerotium, fusarium, acrocyst, colletotrichum, colletotrichum, colletotrichum, verticillium, black beetle, alternaria. Therefore, the compound can be used for preparing bactericides in the fields of agriculture, horticulture, industry and the like, and has the advantages of broad spectrum, high efficiency, low toxicity, environment friendliness and the like.

The invention discloses an InDel molecular marker linked with cucumber corynespora leaf spot, a PCR (Polymerase Chain Reaction) detection primer, a kit and application. According to the invention, a resistant cucumber material and a high-susceptibility material are utilized to construct an F2 group, and BSA-Seq, a molecular marker and other methods are utilized to preliminarily locate a cucumber corynespora leaf spot resistant gene in an interval of about 5.0 Mb in 19 Mb-24 Mb on Chr5; the InDel molecular marker closely linked with the resistance to the corynespora leaf spot disease is developed, and the InDel molecular marker is applied to molecular marker detection and seedling-stage disease resistance identification on 143 cucumber test varieties, so that the high correlation between the molecular marker and the resistance to the cucumber corynespora leaf spot disease is verified; whether cucumbers contain the anti-corynespora leaf spot gene or not can be simply and rapidly detected, then the cucumber anti-corynespora leaf spot disease resistance is detected or detected in an auxiliary mode, and the molecular marker has an application prospect in cucumber anti-corynespora leaf spot molecular marker auxiliary breeding.

This disclosure relates to a method for controlling or preventing plant pathogenic fungi on plants or their plant propagation material, the plant pathogenic fungi belonging to the genus *Cyclocarya paliurus*, *Bacillus oryzae*, *Cyclocarya argentea*, *Cyclocarya gleditsiae*, *Cyclocarya rotundifolia*, *Bacillus aubergine*, *Botrytis cinerea*, *Botrytis tulipta*, *Cercospora multiflora*, *Cercospora kikuchi*, and / or *Cercospora davidii*, the method comprising applying a composition containing jassamycin to the plant, its plant propagation material, or the site thereof.

The invention provides a Pseudomonas tolaasi strain and an application thereof, and belongs to the technical field of biology, and the preservation number of the Pseudomonas tolaasi strain is CCTCC (China Center for Type Culture Collection) NO: M 20251910. The bacterial strain and the fungicide taking the bacterial strain as effective active ingredients can be used for preventing and treating rice sheath blight disease, rice blast, banana grey rot, banana anthracnose, tomato early blight, banana fusarium wilt, mango anthracnose, corn white spot pathogen, corn leaf spot pathogen, corn bipolaris maydis and rice bacterial leaf blight pathogen.

A new and distinct cultivar of Hydrangea macrophylla plant named ‘SC-04-20’, characterized by its glossy dark green foliage with red petioles, remontant (reblooming) trait, flowering on old wood and new growth of the season, rich deep rose mophead inflorescence in non-aluminum-based media and brilliant purplish-blue inflorescence in aluminum-based media, ruby red stems, foliar Cercospora resistance, and its compact, rounded habit with strong stems. The new cultivar is a Hydrangea, typically produced as an outdoor ornamental plant.