比较性RNA分析识别了Bambusoideae和Pooideae物种中特定阶段的phasiRNA和共同表达的阿尔戈诺特基因
Sébastien Bélanger1,2, Junpeng Zhan1,3,4, Yunqing Yu1,2
1Donald Danforth Plant Science Center, St. Louis, MO 63132, USA.
The Plant cell
|November 18, 2024
概括
在草家族中保留了24-nT阶段的,小的干扰RNAs (phasiRNAs),支持男性生育能力. 它们的积累模式和目标在竹子和Pooideae物种之间有所不同,这表明它们的演化速度很快.
科学领域:
- 植物分子生物学 植物分子生物学
- 通过RNA干扰路径.
- 草中的生殖生物学
背景情况:
- 分阶,小干扰RNAs (phasiRNAs) 对于草的雄性生育至关重要.
- 之前的研究已经在玉米和大米中发现了前微生物21-nt和中微生物24-nt相RNA.
- 最近在大麦和小麦中发现了前微生物24-nnt相RNAs,这表明在Pooideae.ae中存在更广泛的保护.
研究的目的:
- 为了研究在Pooideae物种中对前微生物24-nt相RNA和其他繁殖相RNA类的保护.
- 为了比较Pooideae和Bambusoideae草之间的phasiRNA积累模式和目标基因进化.
主要方法:
- 在6种Pooideae和1种Bambusoideae物种中,在3个其他发育阶段进行比较RNA分析.
- 对阿尔戈纳特基因与特定阶段的phasiRNAs共同表达的分析.
- 降级组测序用于识别miRNA和phasiRNA目标.
主要成果:
- 在所有七种被检查的草种中,都发现了前介质24-nnt阶段RNA,从介质24-nnt阶段RNA中表现出不同的生物发生.
- 观察到21nt和24nt阶段RNA的复杂时间积累模式,在 Bambusoideae 和 Pooideae 之间存在差异.
- 在 Bambusoideae 和 Pooideae 中发现了保存的阿尔戈诺特基因; miRNA 目标被保存,但 21-nt phasiRNA 目标是特定于物种的.
结论:
- 在Bambusoideae和Pooideae中保存了前菌24-nt相RNAs,突出了它们在草雄性生育中的基本作用.
- 阶段RNA类的时间表达在竹草和Pooideae草之间有显著的差异.
- 基RNA标似乎迅速演变或难以检测,这表明生殖过程的动态调节.
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