期刊
NATURE PLANTS
卷 2, 期 4, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NPLANTS.2016.30
关键词
-
资金
- Marie Curie IOF Postdoctoral Fellowship [PIOF-GA-2012-330069]
- NSF [MCB-1020499, MCB-1252370]
- Div Of Molecular and Cellular Bioscience
- Direct For Biological Sciences [1252370] Funding Source: National Science Foundation
Plant small interfering RNAs (siRNAs) communicate from cell to cell and travel long distances through the vasculature. However, siRNA movement into germ cells has remained controversial, and has gained interest because the terminally differentiated pollen vegetative nurse cell surrounding the sperm cells undergoes a programmed heterochromatin decondensation and transcriptional reactivation of transposable elements (TEs). Transcription of TEs leads to their post-transcriptional degradation into siRNAs, and it has been proposed that the purpose of this TE reactivation is to generate and load TE siRNAs into the sperm cells. Here, we identify the molecular pathway of TE siRNA production in the pollen grain and demonstrate that siRNAs produced from pollen vegetative cell transcripts can silence TE reporters in the sperm cells. Our data demonstrates that TE siRNAs act non-cell-autonomously, inhibiting TE activity in the germ cells and potentially the next generation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据