Paenibacillus polymyxa and its application for preventing and treating wheat leaf rust

Abstract

The invention relates to a Paenibacillus polymyxa used for preventing and treating wheat leaf rust and its application, belonging to the technical field of microbial pesticides. The bacterial strain Paenibacillus polymyxa involved in the invention Paenibacillus polymyxa , was deposited in the General Microorganism Center of China Committee for the Collection of Microorganisms on November 14, 2017, and the preservation number is: CGMCC No.14879. Paenibacillus polymyxa can be made into a biocontrol agent for the prevention and treatment of wheat leaf rust, which can effectively control the infection of wheat leaf rust, the effect is remarkable, and at the same time, it can promote plant growth, and has a good application prospect in the prevention and treatment of wheat leaf rust .

Description

Technical field [0001] The invention belongs to the technical field of microbial pesticides, and specifically relates to a Bacillus polymyxa for preventing and treating wheat leaf rust and its application. Background technique [0002] Wheat leaf rust is caused by the leaf rust fungus Puccinia triticina, which is one of the main diseases in the world's wheat production. In severe cases, wheat yield can be reduced by more than 40%. Four major outbreaks of wheat leaf rust have occurred in major wheat areas in my country, which caused severe yield losses to wheat production. In recent years, the disease has shown a trend of expansion and development in my country. In 2012, wheat leaf rust occurred on a large scale in Gansu, Henan, Shaanxi, Anhui and Sichuan. [0003] The prevention and control methods for wheat leaf rust are mainly based on the selection of disease-resistant varieties and chemical control. The use of chemical fungicides is easy to make pathogens resistant, pollute th...

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Problems solved by technology

[0003] The control methods for wheat leaf rust are mostly based on the selection of disease-resistant varieties and chemical control. The use of chemical fungicides can easily cause pathogenic bacteria to develop resistance, pollute the environment, and endanger the ecological balance. They have good control effects, non-toxicity, and no pollution. There are not many reports on the characteristics of biological control

The use of biocontrol bacteria to induce and control wheat leaf rust is of great significance, but currently there are few biocontrol bacteria and specific application methods for the control of wheat leaf rust, which largely restricts the biological control of the disease

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