Insect pathogenic nematode symbiotic bacterium capable of inhibiting potato black scurf and applications of insect pathogenic nematode symbiotic bacterium

Abstract

The invention provides an insect pathogenic nematode symbiotic bacterium capable of inhibiting potato black scurf and applications of the insect pathogenic nematode symbiotic bacterium, relating to the insect pathogenic nematode symbiotic bacterium and the applications of the insect pathogenic nematode symbiotic bacterium. The bacterium is Xenorhabdus bovineii HEB01, is preserved in the China General Microbiological Culture Collection Center (CGMCC, located in 3, Courtyard 1, West Beichen Road, Chaoyang District, Beijing,) on Mar 9, 2016, is assigned with the accession number of CGMCC NO.12193, and is used for preventing and treating potato black scurf. The xenorhabdus bovineii HEB01 has the very strong capacity of inhibiting the mycelial growth of the potato black scurf bacterium, the capacity is enhanced along with the increase of the volume concentration, and the antibacterial effect is obvious. Meanwhile, the bacterium has the features that the requirements on the culture conditions are low, the lasting period is long, the source is environmentally friendly and non-toxic, and thus the insect pathogenic nematode symbiotic bacterium has very good development and application prospects.

Description

technical field [0001] The invention relates to an entomopathogenic nematode symbiotic bacterium and its application. Background technique [0002] China is a big potato planting country. Under the impetus of strategies such as potato staple food, my country's potato industry has developed rapidly. However, with the continuous expansion of the planting area, soil-borne diseases caused by many reasons, such as the imperfect crop rotation system and the imperfect supervision of virus-free seed potatoes, are common and aggravated year by year, seriously affecting the healthy development of the potato industry. [0003] Potato black mole is one of the most threatening soil-borne diseases in potato production. Symptoms such as mole and cracks can be formed on the surface of tubers, seriously affecting the quality and commerciality of potatoes (especially seed potatoes), causing huge economic losses. The pathogen Rhizoctonia solani can also cause canker in the seedling stage and ...

AI Technical Summary

Problems solved by technology

Studies have shown that the pathogen has strong environmental adaptability and can survive the winter on tubers, soil or mycelium through sclerotia on plant residues. as well as the surface of the potato tubers, thereby endangering yield and quality

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