Fermentation technology of insect pathogenic nematode symbiotic bacteria and application of its fermented liquid

Abstract

The invention discloses an application of fermenting technology and fermenting material of entomiasis initial line insect symbiosis fungus. It uses Xenorhabdus nematophilus YL001 as raw material and builds a fermenting technology that could improve the antibacterial activity and high biological yield. The fermenting product of Xenorhabdus nematophilus YL001 could be made into entomiasis initial line insect symbiosis fungus antiseptic for controlling cayenne pestilence mildew, and the effect is good.

Description

technical field

[0001] The invention relates to a bacterial fermentation process and the application of the fermented product in the prevention and control of crop diseases, in particular to the fermentation process of the pathogenic bacteria nematophila and the application of its fermented liquid in the preparation of fungicides for the prevention and control of crop diseases. Background technique

[0002] Entomopathogenic nematode symbionts are a type of bacteria parasitic in the intestinal tract of entomopathogenic nematodes, belonging to the family Enterobacteriaceae, facultatively anaerobic, chemoheterotrophic, and Gram stain negative. Including Xenorhabdus and Photorhabdus, they live in symbiosis with Steinernema and Heterorhabditis nematodes respectively. In nature, such bacteria exist in the intestines of nematodes at the third instar infection stage. As the nematodes infect insects, the symbiotic bacteria are carried into the insect and r...