芽胞杆菌在防治水稻稻瘟病中的应用及生防机制

Mechanism and application of Bacillus strains in bio-control of rice blast

摘要:

芽胞杆菌具有人畜安全、不污染环境、病原菌不易产生抗药性、抗逆性强和促进植物生长等优点，是稻瘟病防治上的重要生防菌。芽胞杆菌的生防机制主要包括竞争作用、拮抗作用和诱导抗病性。芽胞杆菌定殖在水稻植株上，产生抗菌活性物质抑制稻瘟病菌的生长，诱导水稻产生抗病性，对水稻植株具有促生作用，可以挽回水稻产量损失。芽胞杆菌可以制备生防制剂用来防治我国南方稻区和北方稻区的稻瘟病危害，在水稻产业的可持续发展中对稻瘟病的生物防治具有指导意义。本文主要综述芽胞杆菌在防治水稻稻瘟病中的应用研究、芽胞杆菌在防治水稻稻瘟病中的生防机制、影响稻瘟病生防芽胞杆菌防效的因素。

Abstract:

Bacillus strains are safe for human and animal, of no environmental pollution, not easy to be resisted by plant pathogen, of strong stress resistance and helpful of promoting plant growth. Due to these advantages, Bacillus strains are important bacteria in bio-control of rice blast. The main bio-control mechanisms of Bacillus include competitive effect, antagonism and the induced disease-resistance. Bacillus strains can colonize in rice plant, produce antifungal active substance to inhibit growth of Magnaporthe oryzae, induce rice disease-resistance, promote rice plant growth and save the rice yield loss. Bacillus strains could be used as bio-control agents against rice blast in Southern and Northern regions of China. It has a guiding significance for the protection of rice blast in rice sustainable development. This article summarized the application progresses of Bacillus strains in bio-control of rice blast, the mechanism of Bacillus strains in bio-control of rice blast, influence factors of bio-control efficiency about Bacillus strains in bio-control of rice blast.