11 results about "Panonychus citri" patented technology

The present invention relates to the preparation and use of novel trifluoroalkylthiophenylpyridine derivatives. Specifically, the present invention relates to compounds of formula (I-1) or formula (I-2) as trifluoroalkylthiophenylpyridine derivatives, or isotope labeled compounds thereof, or optical isomers, geometric isomers, tautomers or mixtures of isomers thereof, or agriculturally acceptable salts thereof, as well as the use of said compounds in the preparation of insecticides for pest control. These compounds are capable of achieving better pest control effects at lower dosages, especially against pests and mites such as Tetranychus cinnabarinus, Tetranychus urticae, and Panonychus citri.

The invention belongs to the technical field of citrus pest control, and particularly relates to an insecticidal composition for improving the citrus pest control effect. The insecticidal composition for improving the citrus pest control effect is composed of bis (demethoxycurcumin) and a compound I according to the mass ratio of (1-300): (300-1), and the compound I is pyridaben. According to the pesticide composition, the action mechanism of the bisdemethoxycurcumin to target pests is different from that of other components, the bisdemethoxycurcumin and the other components have a synergistic effect on the panonychus citri when being compounded, and compared with a single effective component, the prevention and control effect on the panonychus citri can be improved, the dosage of pesticide can be reduced, and the pesticide cost is reduced. The pesticide residue of the pesticide on the citrus fruits is reduced, the environmental pollution is reduced, and a support can be provided for seeking a novel efficient medicament for preventing and treating the citrus panonychus citri.

The invention discloses a molecular marker for interaction resistance of panonychus citri to insecticides as well as application and a detection method of the molecular marker. According to the molecular marker for the cross resistance of the panonychus citri to the multiple medicaments, the molecular marker is carboxylesterase genes PcCCE11 and / or PcCCE7, the nucleotide sequence of the PcCCE11 gene is as shown in SEQ ID NO.1, and the nucleotide sequence of the PcCCE7 gene is as shown in SEQ ID NO.2. The invention further discloses a preparation method of the molecular marker for the cross resistance of the panonychus citri to the multiple medicaments.

The application discloses a molecular marker of citrus full mite resistance to ethyl acetazolamide and application thereof, and the molecular marker is SNP mutation A269G and / or T270A of succinate dehydrogenase SDHD subunit of the citrus full mite. A detection method of the molecular marker of the citrus full mite resistance to ethyl acetazolamide is also disclosed, total DNA of the citrus full mite to be detected is extracted, PCR amplification is carried out with the total DNA as a template, a succinate dehydrogenase SDHD subunit gene fragment containing a mutation region is obtained, and the obtained gene fragment is subjected to sequence comparison with the molecular marker, so that the resistance of the citrus full mite to be detected to ethyl acetazolamide can be judged. The molecular marker and the detection method can simultaneously detect a large number of samples, can quickly and effectively detect whether the resistance SNP molecular marker and the mutation proportion exist in a field population of the citrus full mite, and can evaluate the mutation frequency of the corresponding site in a certain geographical population.

The invention provides a Chinese beetle pyemotes skin necrosis toxin gene as well as an encoding protein and application thereof, and belongs to the technical field of biology. The toxin gene provided by the invention comprises the following nucleotide sequences: (a) a nucleotide sequence as shown in SEQ ID NO: 1; (b) a nucleotide sequence as shown in SEQ ID NO: 2; (c) a nucleotide sequence as shown in SEQ ID NO: 3; (d) a nucleotide sequence as shown in SEQ ID NO: 4; and (e) a nucleotide sequence having at least 95% sequence consistency with at least one of the nucleotide sequences as shown in SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3 and SEQ ID NO: 4. The pyemotes sinensis toxin protein provided by the invention is derived from natural toxin protein and has good insecticidal activity on spodoptera frugiperda.

The invention discloses a dsRNA nanoparticle compound for preventing and treating panonychus citri, a preparation method and application. The compound is prepared from an acaricide (preferably etoxazole), a nano carrier (preferably graphene oxide nanosheets GONs) and dsCPAP3-2 of a targeted epidermal protein gene CPAP3-2. The dsCPAP3-2 is synthesized through an in-vitro transcription or in-vivo vector expression method, and has a good drug resistance treatment effect and industrialization potential. The GONs are prepared by oxidation, activation, modification and purification. The dsRNA nano-particle compound is assembled according to a specific proportion and condition, and through dual mechanisms of silence of a target gene by dsCPAP3-2 to cause ecdysis failure of nymphs and inhibition of chitin synthetase by etoxazole, synergistic mite killing is realized, so that the sensitivity of the acaricide can be improved, a high effect can be achieved with low dosage, the problems of drug resistance and poor stability of biopesticide are solved, and the application prospect is broad. And efficient protection and accurate delivery of bioactive molecules are realized, and the prevention and treatment effect and the lasting period are remarkably improved.

The invention relates to preparation and application of a novel trifluoroalkyl-containing thiophenyl pyridine derivative. Specifically, the invention relates to a compound as shown in a formula (I-1) or (I-2) or an isotope labeled compound of the compound, or an optical isomer, a geometric isomer, a tautomer or an isomer mixture of the compound, or a pharmaceutically acceptable salt of the compound, the invention also relates to application of the compound in preparation of insecticide for pest control. The compound can achieve a better pest control effect at a lower dosage, especially for pests and pest mites such as tetranychus cinnabarinus, tetranychus urticae and panonychus citri.

Disclosed are aryl sulfides, a method for synthesizing the same, and applications thereof. The aryl sulfides are compounds having a structure as shown in Formula I or agriculturally acceptable salts thereof. The aryl sulfides and the agriculturally acceptable salts thereof exhibit excellent effects on a variety of harmful organisms, particularly on spider mites represented by Tetranychus cinnabarinus, Tetranychus urticae, Tetranychus kanzawai, Panonychus citri, and the like, and can be used for controlling various harmful mites.

The invention discloses an acaricidal composition and application thereof, the composition takes ivermectin and amitraz as main effective components, the weight part ratio of the ivermectin to the amitraz is 5: 1-1: 60, and the weight percentage of the active components in the acaricidal composition is 3%-70%. The composition disclosed by the invention has relatively high activity on tetranychid, and particularly has a remarkable synergistic interaction performance on tetranychus urticae (Koch), panonychus citri (McGreen), panonychus ulmi (Koch) and tetranychus vienis (Zacher), so that the composition disclosed by the invention can be used for preventing and controlling the tetranychus urticae (Koch), the panonychus ulmi (Koch) and the tetranychus vienis (Zacher), and can be used for preventing and controlling the tetranychus urticae (Koch) and the tetranychus vienis (Zacher).

The invention relates to a chlorfenapyr-containing acaricidal composition as well as a preparation method and application thereof, and relates to the technical field of pesticides, the acaricidal composition comprises a first active component and a second active component, the first active component comprises chlorfenapyr, the second active component comprises acequinocyl, and the acaricidal composition is prepared from the first active component and the second active component. The mass ratio of the first active component to the second active component is (15: 1)-(1: 5). The acaricidal composition provided by the invention is reasonable in component, remarkable in synergistic effect, good in insecticidal effect, low in medication cost and safe to crops, can prevent and control mites such as tetranychus urticae, tetranychus cinnabarinus, panonychus citri and cotton spider mites, has a good prevention effect, and can delay the generation of drug resistance of pest mites.

The invention discloses an RNAi pesticide compound based on epidermal protein fusion dsRNA and a preparation method thereof, and belongs to the technical field of pest control. The RNAi pesticide compound based on the epidermal protein fusion dsRNA is prepared from the following components in parts by weight: 80 to 120 parts of etoxazole, 5.3 to 8 parts of a nano carrier graphene oxide nanosheet and 2.7 to 4 parts of fusion dsCPAP3-1-ftz-f1, gONs and dsCPAP3-1-ftz-f1 form a compound according to the volume ratio of 2: 1, then the compound and etoxazole mother liquor are mixed according to the volume ratio of 1: 10, and a finished product is prepared through ultrasonic-assisted dispersion. Experiments prove that the GONs can efficiently load dsRNA through electrostatic interaction, the compound can significantly improve the environmental stability and delivery efficiency of the dsRNA, the fused dsRNA can specifically silence a target gene, and when the GONs and etoxazole act synergistically, the sensitivity of the panonychus citri to an acaricide can be significantly improved, the survival rate of the panonychus citri can be reduced, and the application prospect is broad. The problems that a traditional chemical acaricide is high in drug resistance, poor in RNA pesticide stability and low in delivery efficiency are effectively solved, and a novel technical scheme is provided for green prevention and control of panonychus citri.