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Updated: Jun 4, 2025

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mRNA Interactome Capture from Plant Protoplasts
Published on: July 28, 2017
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多种植物RNA覆盖了Arabidopsis的叶子,与无细胞RNA不同
M Lucía Borniego1, Meenu Singla-Rastogi1, Patricia Baldrich2,3
1Department of Biology, Indiana University, Bloomington, IN 47405.
概括
植物可以将RNA分泌到叶子表面,这是一项新发现,可以解释RNA如何移动来对抗真菌病原体. 这种叶子表面RNA与植物内部RNA不同,可能会影响微生物群落.
科学领域:
- 植物病理学 植物病理学
- 分子生物学分子生物学
- RNA生物学的RNA生物学
背景情况:
- 宿主诱导的基因沉默涉及从植物转移RNA到真菌病原体.
- 通过植物和真菌细胞膜转移RNA的机制尚不清楚.
- 感染早期可能会发生RNA转移,这表明可能会在叶子表面分泌.
研究的目的:
- 为了调查阿拉比多普西斯植物是否在叶面上分泌RNA.
- 为了描述这种叶面RNA的性质和起源.
- 探索叶面RNA在植物微生物相互作用中的潜在作用.
主要方法:
- 开发了一种协议,以分离不同于细胞间 (无细胞) RNA 的叶子表面RNA.
- 通过超离心和EGTA处理分析了RNA特征.
- 通过基因组来源分析确定RNA起源.
主要成果:
- 丰富的叶面RNA被分离出来,不同于apoplasticRNA.
- 叶面RNA与细胞外囊泡或蛋白质复合体没有关联.
- 通过EGTA抑制了超过100个核酸的RNA颗粒化,这表明凝结物形成.
- 叶子表面RNA源自不同的Arabidopsis基因组来源,具有丰富的tRNA.
- RNA转移机制可能涉及直接分泌到叶子表面.
结论:
- 阿拉比多普西斯植物具有将RNA分泌到叶子表面的机制.
- 这种分泌的RNA可能形成凝聚物,并来自各种内源来源.
- 内生叶面RNA可能在塑造叶面微生物群落方面发挥作用.
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