Bacillus endophyticus from anti-nematode variety and application of bacillus endophyticus

Abstract

The invention discloses bacillus endophyticus from an anti-nematode variety and application of the bacillus endophyticus. The bacterial strain number of the bacillus endophyticus is JZB126, and the register number of the bacillus endophyticus in General Microorganism Center, China Committee for Culture Collection of Microorganisms is CGM CC No. 11846. The corrected death rate of the bacillus endophyticus JZB126 for root-knot nematode in the South is 99. 1%, after four generations are cultured continuously, the corrected death rate for root-knot nematode in the South is 97. 1%, the mean ovum incubation inhibition rate for root-knot nematode in the South is 99. 0%, under the condition that no auxiliary agent is added, on the 45 day, the prevention effect for root-knot nematode disease of cucumbers reaches 80. 7%, and 80 days later, the prevention effect for root-knot nematode disease of cucumbers still reaches 65. 1%. The bacillus endophyticus JZB126 and / or mcetabolin thereof can be applied to prevention and treatment of root-knot nematode of plants.

Description

technical field [0001] The invention belongs to the technical field of microbial pesticides, and in particular relates to an intraplant bacillus derived from a nematode-resistant variety and its application. Background technique [0002] Root-knot nematode Meloidogynes pp. is a class of soil-borne pathogen that seriously endangers agricultural production. It can parasitize various crops, especially vegetables, and has caused serious yield reduction in tropical and subtropical regions (KiewnickS, SikoraRA.2006. 38(2):179-187.). In recent years, with the continuous expansion of vegetable planting area in my country, the incidence of vegetable root-knot nematode has increased year by year, and it has become one of the difficult diseases that seriously affect the safety of vegetable products (Zhao Zhixiang et al. Construction of genomic library and screening of a nematicide protease gene. Acta Microbiology, 50(8): 1072-1079). [0003] At present, nematode control is still domin...

AI Technical Summary

Problems solved by technology

[0004] The vast majority of plant root-knot nematode biocontrol bacteria are isolated and screened from soil or plant rhizosphere soil microorganisms, but these soil microorganisms are easily affected by external conditions and are difficult to inhabit with soil, plant rhizosphere or leaf peripheries. long-term advantage in the competition of microorganisms, thus greatly affecting its practical value

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