种子介导的Pantoea核心内植物的垂直传播
Irene Sanz-Puente1, Santiago Redondo-Salvo1,2, Gloria Torres-Cortés3,4
1Instituto de Biomedicina y Biotecnología de Cantabria (IBBTEC), Universidad de Cantabria - Consejo Superior de Investigaciones Científicas (CSIC), Santander, Spain.
The ISME journal
|August 28, 2025
概括
在小麦种子中经常发现Pantoea细菌,这表明它们在几代人之间垂直传播. 这项研究通过实验证实了Poaceae植物的代际转移.
科学领域:
- 微生物学
- 植物科学
- 遗传学
背景情况:
- 植物相关的微生物,特别是内植物,对于植物的健康和发育至关重要.
- 种子内植物因其潜在的垂直传播而引人注目的,它会影响跨代的稳定细菌与宿主相互作用.
- 虽然种子与细菌的关联已知,但实验证实细菌通过接种方式传递给连续几代植物是缺乏的.
研究的目的:
- 在小麦种子中识别核心内菌并调查它们的传播模式.
- 通过实验证实内菌细菌通过连续几代植物的垂直遗传.
- 为了探索 Poaceae 植物中的细菌转移的特异性.
主要方法:
- 在来自全球不同地区的 24 个小麦种子样本中对内菌的分析.
- 在 gnotobiotic 和田间条件下,对小麦种子,幼苗 (根和芽) 和田间植物组织 (根,芽,,种子) 的细菌丰度进行量化.
- 用标记的Pantoea分离物注射父母小麦植物,以追踪后代的细菌殖民.
主要成果:
- 在小麦内中,Pantoea被确定为唯一的核心内细菌,在种子 (61%) 和幼苗 (45-38%) 中的相对丰度最高.
- 在田间条件下,Pantoea是唯一一个在四种小麦品种的所有组织 (根,芽,,种子) 中发现的属性,表现出渐进的丰富.
- 实验性接种证明了被标记为Pantoea的后代的特定殖民,证实了垂直遗传.
结论:
- 潘托亚在小麦中表现出真正的垂直丰富模式,这表明它在通过种子的代际转移中发挥了特殊作用.
- 这项研究首次实验证实了通过Poaceae的连续植物代的细菌垂直遗传.
- 这些发现突出了跨植物世代传播的特定,稳定的细菌与宿主相互作用的潜力.
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