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Method for improving efficiency of infecting host larvae with cordyceps sinensis

A technology for the host of Cordyceps sinensis and Cordyceps sinensis fungus is applied in the field of improving the efficiency of insect-borne fungi infecting insects, and can solve the problems of difficulty in repairing host larvae, difficulty in repairing host larvae, and environmental pollution in cultivation, so as to improve efficiency, reduce bacterial infection, Improve sloppy effect

Active Publication Date: 2017-08-08
赛信(海南)生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the existing technology, the infection efficiency is generally low, and there are physical traumas that cause host larvae to be difficult to repair in the improved technology, and the host larvae are easy to infect the rearing substrate or other infectious and contaminating bacteria contained in the feed, such as Beauveria bassiana and Paecilomyces , bacteria and other pathogenic bacteria, causing problems such as low rate of weed growth and environmental pollution of cultivation, in order to solve the above problems, the present invention provides a physical wound that does not cause host larvae to be difficult to repair, and can effectively improve the efficiency of Cordyceps sinensis infection of host larvae Methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Take commercially available 5000U / mg lysozyme 0.2g and add it into 1000mL pure water, use disodium hydrogen phosphate and citric acid to adjust the pH value to 3.4, and prepare 1×10 3 U / mL of lysozyme solution. Spray the prepared lysozyme solution at a temperature of 10°C on the soil matrix where the Cordyceps sinensis host larvae grow, spray 0.1 mL of the lysozyme solution per cubic centimeter, and then put the Cordyceps sinensis host larvae into the pretreated soil matrix, Put 1 Cordyceps sinensis host larva per 9 square centimeters, raise it for 2 days under the environmental conditions of temperature of 10°C and humidity of 40%, and then let the liquid Cordyceps sinensis strain obtained from fermentation be applied to the body surface of the host larvae to make it contact with the Cordyceps sinensis strain At the same time, the host larvae without lysozyme pretreatment were contacted with Cordyceps sinensis strains in the same way as a control, and blood lymph fluid...

Embodiment 2

[0015] Take commercially available 10000U / mg lysozyme 5g and add it into 1000mL pure water, use disodium hydrogen phosphate and citric acid to adjust the pH value to 5.6, and prepare 5×10 4 U / mL of lysozyme solution. Spray the prepared lysozyme solution at 18°C ​​on the soil matrix where the Cordyceps host larvae grow, spray 0.5 mL of the lysozyme solution per cubic centimeter, and then put the Cordyceps host larvae into the pretreated soil matrix, Put 1 Cordyceps sinensis host larva per 25 square centimeters, raise it for 7 days under the environmental conditions of 18°C ​​and 90% humidity, then let the liquid Cordyceps sinensis strain obtained by fermentation be sprayed on the substrate where the host larvae grow, so that it can be mixed with Cordyceps sinensis fungus contact with the host larvae without lysozyme pretreatment at the same time with the Cordyceps fungus in the same way as a control, and 2 weeks after the contact, blood lymph fluid was taken for microscopic exa...

Embodiment 3

[0017] Take commercially available 10000U / mg lysozyme 0.5g and add it into 1000mL pure water, use disodium hydrogen phosphate and citric acid to adjust the pH value to 5.0, and prepare 5×10 3 U / mL of lysozyme solution. Spray the prepared lysozyme solution with a temperature of 12°C on the soil matrix where the Cordyceps sinensis host larvae grow, put 1 Cordyceps sinensis host larva per 18 square centimeters, spray 0.25 mL of the lysozyme solution per cubic centimeter, and then put Cordyceps sinensis The host larvae are put into the pretreated soil matrix and fed for 3 days at a temperature of 12°C and a humidity of 70%. Then the liquid Cordyceps strains obtained from fermentation are applied to the surface of the host larvae to make them contact with the Cordyceps strains At the same time, the host larvae without lysozyme pretreatment were contacted with Cordyceps sinensis strains in the same way as a control, and blood lymph fluid was taken 2 weeks after the contact to check ...

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PUM

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Abstract

The invention relates to a method for improving efficiency of infecting host larvae with cordyceps sinensis. Before infection of cordyceps sinensis host larvae with cordyceps sinensis, the cordyceps sinensis host larvae are pretreated with a lysozyme liquid prepared from a buffer liquid with pH being 3.4-5.6, wherein concentration of the lysozyme liquid is 1*10<3>-5*10<4> U / mL, and then the pretreated cordyceps sinensis host larvae are infected with the cordyceps sinensis. The method is conducive to improvement of production efficiency when the host larvae are infected with the cordyceps sinensis.

Description

technical field [0001] The invention relates to a method for improving the efficiency of entomogenous fungi infecting insects, in particular to a method for improving the efficiency of Cordyceps sinensis infecting host larvae. Background technique [0002] Cordyceps sinensis is a precious medicinal material in my country. Together with ginseng and pilose antler, it is called "three treasures of traditional Chinese medicine". Cordyceps sinensis is produced in the eastern region of the Qinghai-Tibet Plateau, and the wild yield is small. In recent decades, the resources have declined and are facing the risk of resource depletion. [0003] Cordyceps sinensis is a kind of entomogenous fungus, which can only be formed in the larvae of insects of the genus Manta. Due to the poor ability of the Cordyceps fungus to infect host insects, coupled with the protective effect of the body wall barrier of the larvae of the genus Batmoth, under normal circumstances, under the general technic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/04A01K67/033
CPCA01K67/033A01G18/00
Inventor 张立岩
Owner 赛信(海南)生物科技有限公司