纳米粒子介导的dsRNA传递系统的发展,以控制植物中的ToCV和TYLCV感染
Gentu Wu1, Xiaolong Yang1, Haolan Zhang1
1Chongqing Key Laboratory of Plant Disease Biology, College of Plant Protection, Southwest University, Chongqing, China.
Pest management science
|February 5, 2026
概括
纳米粒子有效地传递双链RNA (dsRNA) 来对抗植物中的番茄化病毒 (ToCV) 和番茄黄色叶子卷曲病毒 (TYLCV). 这种纳米粒子介导的RNA干扰 (RNAi) 策略显示了可持续农业和病毒疾病管理的重大前景.
科学领域:
- 农业科学 农业科学
- 纳米技术 纳米技术
- 植物病理学 植物病理学
背景情况:
- 番茄化病毒 (ToCV) 和番茄黄色叶子卷曲病毒 (TYLCV) 导致大量的作物损失.
- 与ToCV和TYLCV的同时感染会加剧疾病症状,造成控制挑战.
- 基于纳米材料的双链RNA (dsRNA) 通过RNA干扰 (RNAi) 提供了一种新的抗病毒策略.
研究的目的:
- 评估包装和输送的dsrna对tocv和tylcv的有效性. 评估基托桑四级盐 (cqas) 和氨基化半孔二氧化纳米粒子 (msn@nh2) 在包装和输送中对tocv和tylcv的有效性.
- 在单一和共感染场景下,评估纳米粒子-dsRNA配方在各种植物模型中的抗病毒活性.
- 展示纳米粒子介导RNAi的潜力,以可持续管理植物病毒性疾病.
主要方法:
- 两种纳米材料CQAS和MSN@NH2被用来包装针对ToCV和TYLCV的特定基因的dSRNA.
- 制定和表征了CQAS/dsRNA和MSN@NH2/dsRNA纳米粒子.
- 这些纳米颗粒的有效性在感染ToCV和/或TYLCV的烟草和番茄植物中进行了测试.
主要成果:
- 无论是CQAS/dsRNA还是MSN@NH2/dsRNA纳米颗粒都提高了dsRNA的稳定性.
- 纳米粒子配方显著降低了病毒基因转录水平,抑制率从33.5%到99.5%.
- 在同时感染的N. benthamiana.中,MSN@NH2/dsRNA显示出高疗效,抑制TYLCV的99.5%,ToCV的79.8%.
结论:
- CQAS和MSN@NH2纳米粒子在包装和保护dRNA免受降解方面是有效的.
- 纳米粒子介导的RNAi是管理植物中ToCV和TYLCV感染的非常有前途的策略.
- 这种方法通过为病毒疾病管理提供有效的工具,为可持续农业做出了贡献.
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