细菌 velezensis 通过整合抗真菌和增长促进功能来增强大米对棕色斑点的抵抗力
Elizabeth B E Pires1, Maira S Tique Obando1, Luis Janssen1,2
1Programa de Pós-Graduação em Biotecnologia, Universidade Federal do Tocantins (UFT), Gurupi 77402-970, TO, Brazil.
International journal of molecular sciences
|February 13, 2026
概括
三种Bacillus菌株显示出控制由Bipolaris oryzae引起的棕斑病的潜力. 细菌 velezensis 有效地减少了疾病和改善了苗木活力,提供了一个可持续的生物控制策略.
科学领域:
- 农业科学 农业科学
- 微生物学 微生物学
- 植物病理学 植物病理学
背景情况:
- 棕斑病是由Bipolaris oryzae引起的,在全球范围内显著限制了大米产量.
- 种子传播的Bipolaris oryzae对大米种植构成了持续的挑战.
研究的目的:
- 评估三种Bacillus菌株对大米中的Bipolaris oryzae的生物控制疗效.
- 评估Bacillus菌株对苗活力和疾病严重性的影响.
主要方法:
- 在体外和体内测试中使用Bacillus cereus,Bacillus velezensis和Bacillus subtilis进行了针对Bipolaris oryzae的测试.
- 两种水品种"Rubelita"和"Predileta"被用于测试生物控制剂.
- 进行了功能测试和基因组分析,以了解作用机制.
主要成果:
- 在实验室中,Bacillus cereus实现了大约95%的菌株抑制.
- 在温室条件下,Bacillus velezensis显著减少了多达60%的疾病严重程度,并在温室条件下增加了51%的苗木活力.
- 在使用Bacillus菌株治疗时",Predileta"大米品种表现出对疾病的增强耐受性.
结论:
- 百菌 velezensis 显示出作为大米棕斑病的生物控制剂的显著潜力.
- 已识别的Bacillus菌株具有多功能特征,包括抗真菌和促进植物生长的活动.
- 在种子和土壤管理中利用本地Bacillus菌株为新热带大米生产提供了一种可持续的方法.
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