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选细菌分离物用于生物控制大米植物中的囊病

Akintunde Abiodun Ajulo^1,2, Princewill Chukwuma Asobia², Rodrigo Silva de Oliveira²

¹Plant Pathology and Agricultural Microbiology Laboratory at Embrapa Rice and Beans, Santo Antônio de Goiás, Goiás state, Brazil.

Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes

|June 14, 2023

概括

这项研究选了细菌来控制大米病,这是由Rhizoctonia solani引起的一种主要疾病. 几种细菌分离物在温室试验中有效抑制了这种疾病,显示出作为生物真菌杀菌剂的潜力.

科学领域:

农业科学农业科学
植物病理学植物病理学
微生物学微生物学

背景情况:

由*Rhizoctonia solani*引起的罩病,显著降低了大米 (*Oryza sativa* L.) 的产量.
需要有效的生物控制药物,才能可持续地对病进行管理.

研究的目的:

选细菌分离物对抗R. solani的对抗性.
在温室条件下识别有效的细菌分离物来抑制病.

主要方法:

在实验室中对21种细菌隔离物进行查,以对抗R. solani.
温室测定使用米品种BRS Pampeira接种R. solani和细菌悬浮剂 (10^8>CFU/mL).
根据相对损伤大小评估疾病的严重程度.

主要成果:

隔离物BRM32112 (*Pseudomonas nitroreducens*),BRM65929 (*Priestia megaterium*) 和BRM65919 (*Bacillus cereus*) 抑制了R. solani*的辐射生长,分别为92.8%,77.56%和75.56%.
在温室试验中,BRM63523 (*Serratia marcescens*),BRM65923 (*P. megaterium*),BRM65916 (*P. megaterium*) 和BRM65919 (*B. cereus*) 隔离物有效抑制了外病变,病变大小在20.17至23.62厘米之间.

结论:

特定的细菌分离物,包括*Pseudomonas nitroreducens*,*Priestia megaterium*和*Bacillus cereus*,显示出控制大米病的巨大潜力.
这些已识别的分离物可以被开发成生物杀菌剂,用于在米种植中可持续管理R. solani.

关键词:

生物制剂生物制剂这是一种Oryza sativa.这种植物是Rhizoctonia solani.生物控制生物控制接种疫苗是为了接种疫苗.

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