Rhodo streptomycete and its spirillicide

Abstract

The present invention relates to a Streptomyces violaceoruber and its molluscicides, wherein said Streptomyces violaceoruber is Streptomyces violaceoruber I which is preserved at China typical culture preservation center (CCTCC) with a preservation identification serial number of M203102 and a preservation date at 20030803. The bacterial strain is separated and activated by adopting Gao synthesized number 1 vegetable gelatine flat plate or inclined surface culture medium, and the Streptomyces violaceoruber bacterium solution with molluscidal functions is then cultured through fermentation by using a swing bottle; the Streptomyces violaceoruber bacterium solution and the plant pelleting additive are mixed to constitute a molluscicide. The Streptomyces violaceoruber in accordance with the present invention possesses stronger molluscidal effect, and the molluscicide formulated by the Streptomyces violaceoruber bacterium solution and plant pelleting additive possesses the following advantages: 1, without toxic and side effects and pollutions for the environment, it can be naturally degraded rapidly; 2, without toxic and side effects for persons and animals, it can maintain a long molluscidal time (longer than 15 days); 3, it is convenient to store, convey and use; 4, it has more improved molluscidal effect than pure bacterium solution and pure bacterium powder, with reduced drug amount; 5, relative pure plant powder, it has improved medical effects and prolonged time for maintaining the medical effects.

Description

technical field [0001] The invention relates to a microorganism and a molluscicidal preparation thereof, in particular to Streptomyces violaceum with molluscicidal effect and the molluscicidal agent thereof. Background technique [0002] Oncomelania is the intermediate host of schistosomiasis and an important medium for infecting schistosomiasis. Therefore, killing snails is one of the effective ways to control schistosomiasis; most of the molluscicides used in countries around the world are chemical molluscicides, such as the early use Sodium pentachlorophenate, bromoacetamide, nicotinamide and niclosamide, etc., which have been popularized and applied in recent years, these molluscicides have problems such as weak selectivity, poor persistence, and easy environmental pollution to varying degrees. Chemically synthesized molluscicides pollute the environment, and people have always wanted to obtain pure natural plant molluscicides. Since Archibsld (1933) used the fruits of ...

AI Technical Summary

Problems solved by technology

[0006] The molluscicidal effect of an effective molluscicide is closely related to its application method. Generally speaking, the molluscicide must be in contact with the microorganisms to fully exert its effectiveness, which greatly limits the application methods of microbial molluscicides. And because the strains of microorganisms are different, their biological characteristics are also different. At the same time, due to the influence of various physical and chemical factors, such as temperature, light, soil water content, dosage form of molluscicide, pH value, etc., microbial molluscicide has not yet been developed. For real practical applications, most of the tests are conducted in laboratories, and a small number of strains or preparations for on-site tests use mostly coarse powder, and the amount used in on-site spraying experiments is relatively large, but there are many components in the culture medium; Most of the wild strains used are directly isolated from the field without selection