Plant root-knot nematode biocontrol bacterium as well as preparation and application thereof

Abstract

The invention discloses a plant root-knot nematode biocontrol bacterium as well as a preparation and an application thereof. The purpureocillium lilacinum CCTCC NO.M2016682 screened through research has strong pathogenicity on plant root-knot nematodes, and can be used as a plant root-knot nematode biocontrol bacterium; a plant root-knot nematode biocontrol agent containing the purpureocillium lilacinum, conidia of the purpureocillium lilacinum, metabolites of the purpureocillium lilacinum or solid fermentation products of the purpureocillium lilacinum can be prepared; the plant root-knot nematode biocontrol agent is applied to soil in a soil mixing form, so that plant root-knot nematode can be effectively prevented and treated; the high-yield and high-quality leucinostatin can be extracted or prepared by using the purpureocillium lilacinum. The biocontrol bacterium and the biological agent are low in production cost, easy to prepare, efficient, low in toxicity, environmentally friendly, free of pollution and not prone to generating drug resistance; the effects of environmental protection, safety, low cost and high-efficiency prevention and treatment of plant root-knot nematodes can be achieved.

Description

Technical field [0001] The invention relates to the technical field of microorganisms, in particular to a plant root-knot nematode biocontrol bacteria, its preparation and its application. Background technique [0002] Root-knot nematodes belong to the genus of Root-knot nematodes in the Class Pleurocytic, Dimensalidae, Heterodermatoideae, and Root-knot nematodes. They are a class of important plant pathogenic nematodes that seriously harm economic crops and are widely distributed throughout the world; It can infect economic food crops, vegetables, ornamental flowers and trees, and even weeds. [0003] In our country, with the rapid development of the agricultural economy, the continuous reform and adjustment of the industrial structure, the continuous and reasonable optimization of the planting system, and the rapid development of the greenhouse and greenhouse cultivation area, coupled with the weak management consciousness of farmers, the incidence of root-knot nematode diseases ...

AI Technical Summary

Problems solved by technology

However, limited by the limited planting area and the high cost investment of greenhouse construction, farmers are affected by the environment and interests, and it is difficult for farmers to accept idle land, or crop rotation with crops with low economic value and low income, so they rely on agriculture to prevent root-knot nematode disease not yet well implemented

[0007] Theoretically, the planting of resistant varieties was once considered to be an effective and widely used control measure to control root-knot nematode diseases. However, the resources of effective resistant varieties in actual agricultural production are limited.

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