4results about How to "Reduce virus content" patented technology

The application discloses an improved disinfection and deodorization air conditioning unit. Air enters from a fresh air inlet, is humidified after passing through a first humidifying section, and becomes wet and has certain adhesion under the action of the first humidifying section, the first fin-shaped cooling coil and the second fin-shaped cooling coil and the sterilization net. The sterilization net forms a high-efficiency wet water film under the action of water vapor in the air conditioner. When the air flows, the bacteria and viruses in the air are intercepted by the wet first fin-shaped cooling coil, the wet second fin-shaped cooling coil and the wet sterilization net, so that better sterilization and disinfection effect on the bacteria and viruses in the air is achieved. In combination with the surface sterilization and disinfection of the inner wall made of the sterilization aluminum material in the lower box body, the three-dimensional disinfection effect is achieved. The sterilization and disinfection effect is generated by the manufacturing material of the equipment itself, no harmful substances are generated, no additional deodorization device and ultraviolet disinfection device are needed, and the manufacturing cost and daily maintenance cost are greatly reduced.

This invention provides a method for creating rice materials that can block the transmission of rice stripe virus by planthoppers, belonging to the field of agricultural science and technology. Based on the characteristic that the rice stripe virus (RSV) glycoprotein NSvc2-N mediates viral infection of the planthopper midgut, NSvc2-N is selected from this glycoprotein. S (720 bp, encoding the soluble region of NSvc2-N, i.e., amino acids 30-268), was integrated into the rice genome using transgenic technology. The resulting transgenic rice plants significantly reduced the virus acquisition rate, virus content in the insects, and virus transmission rate of planthoppers, demonstrating that the NSvc2-N expressed in the transgenic plants... S The protein can competitively bind to the viral infection site located in the midgut of the planthopper, thereby blocking the planthopper from transmitting the virus. This method fills the gap in technology that uses the plant itself to block the planthopper from transmitting the virus. Compared with traditional "insect control and disease prevention" methods, this method is simple, economical, green, and efficient, and can be applied to antiviral breeding, disease control research, and research on the mechanism of insect virus transmission.

The application discloses a broad-spectrum disease-resistant gene Rpl-avh23 of Nicotiana plumbaginifolia, and an encoding protein and application thereof. The application separates a disease-resistant gene Rpl-avh23 from the Nicotiana plumbaginifolia, the full-length cDNA of the gene is 2154 bp, the nucleotide sequence is shown as SEQ ID NO:1; the protein encoded by the gene is an intracellular immune receptor protein with a full length of 717 amino acids, and the amino acid sequence is shown as SEQ ID NO:2. The application finds that the Rpl-avh23 gene can improve the resistance of plants to oomycetes, fungi and / or viruses through transcription mode analysis and plant expression analysis, and therefore, the disease-resistant gene Rpl-avh23 can be applied to improving the disease resistance of plants or plant breeding.

The invention relates to the technical field of damascene rose detoxification and rapid propagation, and discloses a damascene rose detoxification and rapid propagation method which comprises the following steps: an earlier-stage preparation stage: collecting damascene rose stock plants for pruning pretreatment, and preparing heat treatment equipment, a chemical agent solution and materials required by rapid propagation at the same time, in the detoxification treatment stage, a Damascus rose stock plant is placed in an artificial climate box for heat treatment detoxification, after heat treatment detoxification, the Damascus rose stock plant is sheared into cutting slips, and the cutting slips are placed in a chemical agent solution for chemical agent soaking detoxification, and in the rapid propagation operation stage, the cutting slips are soaked in a rooting agent for 2-4 hours, and air-drying the soaked cutting slips. According to the method, heat treatment detoxification and chemical agent detoxification are combined, so that the virus content in Damascus rose plants or cuttings can be effectively reduced, and the problem that the yield is not high due to the fact that single heat treatment detoxification is usually adopted in a traditional detoxification step is solved.