期刊
FRONTIERS IN PLANT SCIENCE
卷 11, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fpls.2020.619404
关键词
barley; anther; meiocyte; transcriptome; meiosis; argonaute; lncRNAs; ubiquitin
资金
- European Research Council [669182]
- Scottish Government's Rural and Environment Science and Analytical Services Division work program Theme 2 WP2.1 RD1
- BBSRC [BB/R014582/1] Funding Source: UKRI
In this study, the temporal dynamics of transcript abundance in barley anthers and meiocytes were investigated using RNA-seq, revealing significant transcriptional changes in anthers at the transition from pre-meiosis to leptotene-zygotene and remarkable stability in meiocytes throughout prophase I after the initial reprogramming at meiosis entry. Additionally, only 24% of putative meiotic gene orthologs showed differential transcript abundance, indicating the complexity of regulatory networks involved in early meiotic processes.
In flowering plants, successful germinal cell development and meiotic recombination depend upon a combination of environmental and genetic factors. To gain insights into this specialized reproductive development program we used short- and long-read RNA-sequencing (RNA-seq) to study the temporal dynamics of transcript abundance in immuno-cytologically staged barley (Hordeum vulgare) anthers and meiocytes. We show that the most significant transcriptional changes in anthers occur at the transition from pre-meiosis to leptotene-zygotene, which is followed by increasingly stable transcript abundance throughout prophase I into metaphase I-tetrad. Our analysis reveals that the pre-meiotic anthers are enriched in long non-coding RNAs (lncRNAs) and that entry to meiosis is characterized by their robust and significant down regulation. Intriguingly, only 24% of a collection of putative meiotic gene orthologs showed differential transcript abundance in at least one stage or tissue comparison. Argonautes, E3 ubiquitin ligases, and lys48 specific de-ubiquitinating enzymes were enriched in prophase I meiocyte samples. These developmental, time-resolved transcriptomes demonstrate remarkable stability in transcript abundance in meiocytes throughout prophase I after the initial and substantial reprogramming at meiosis entry and the complexity of the regulatory networks involved in early meiotic processes.
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