发酵植物肥可以控制由Ralstonia pseudosolanacearum引起的西红细菌枯
Akiko Hida1, Nanako Okano2, Chika Tadokoro1
1Program of Biotechnology, Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan.
Bioscience, biotechnology, and biochemistry
|February 21, 2024
概括
发酵植物产品 (FBP) 通过诱导植物耐药性来抑制番茄植物中的细菌病,而不是通过直接抑制病原体Ralstonia pseudosolanacearum.
科学领域:
- 植物病理学 植物病理学
- 微生物学 微生物学
- 农业科学 农业科学
背景情况:
- 由Ralstonia pseudosolanacearum引起的细菌,是一种破坏性疾病,影响着世界各地的番茄生产.
- 目前的管理策略通常依赖于化学处理,推动了对可持续替代品的需求.
研究的目的:
- 研究发酵植物产品 (FBP) 对控制番茄植物细菌枯病的疗效.
- 阐明FBP影响植物病原体相互作用的作用机制.
主要方法:
- 番茄植物被浸泡在稀释的FBP溶液 (0.1%-0.5%) 中,随后被挑战R. pseudosolanacearum.
- 进行了生长试验,以评估FBP对R. pseudosolanacearum的直接影响.
- 感染试验使用化学反应缺陷突变物和根浸接接种来研究病原体迁移.
- 在空中植物部位的细菌种群被量化.
主要成果:
- FBP的应用显著抑制了细菌病,并改善了感染下的番茄植物生长.
- FBP没有对R. pseudosolanacearum表现出直接的抗菌活性;它甚至在体外促进了病原体的生长.
- FBP没有阻碍病原体向植物根部迁移.
- 在FBP处理植物的上空部分观察到减少的R. pseudosolanacearum种群.
- 用FBP预处理的植物显示,即使在挑战阶段没有FBP,疾病严重程度也会降低.
结论:
- 发酵植物产品 (FBP) 赋予番茄植物对细菌枯的抗性,可能是通过诱导的抗性机制.
- 保护作用是由植物对Ralstonia pseudosolanacearum反应的变化介导的,而不是直接的抗菌作用.
- FBP代表了一种有希望的环保方法,用于农业中控制细菌病.
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