植物的细胞 RNA 依赖性 RNA 聚合酶

IF 9.4 1区生物学 Q1 Agricultural and Biological Sciences New Phytologist Pub Date : 2024-12-01 Epub Date: 2024-08-13 DOI:10.1111/nph.20046

Xuan Du

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引用次数: 0

摘要

RNA 依赖性 RNA 聚合酶（RdRPs）从单链 RNA（ssRNA）模板合成双链 RNA（dsRNA）。在植物体内，RdRPs 产生的 dsRNA 可进一步加工成不同长度的小干扰 RNA（siRNA），长度从 21 到 24 个核苷酸（nt）不等。这些 siRNA 在各种生物过程中发挥着关键作用，包括抗病毒反应、转座元件沉默、DNA 甲基化以及植物繁殖和发育调控。最近的研究报告显示，在揭示植物 RNA-DEPENDENT RNA POLYMERASE 2（RDR2）的分子机制方面取得了重大进展，RDR2 是参与 RNA 引导 DNA 甲基化（RdDM）途径的代表性 RdRP。这些发现为 RdRP 的功能原理提供了分子基础，并为作物育种和抗病毒防御策略的潜在进步提供了启示。

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The cellular RNA-dependent RNA polymerases in plants.

RNA-dependent RNA Polymerases (RdRPs) synthesize double-stranded RNA (dsRNA) from a single-stranded RNA (ssRNA) template. In plants, dsRNAs produced by RdRPs can be further processed into small interfering RNA (siRNAs) with different lengths, ranging from 21 to 24 nucleotides (nt). These siRNAs play a pivotal role in various biological processes, including antiviral responses, transposable elements silencing, DNA methylation, and the regulation of plant reproduction and development. Recent research has reported significant progress in uncovering the molecular mechanisms of plant RNA-DEPENDENT RNA POLYMERASE 2 (RDR2), a representative RdRP involved in the RNA-directed DNA methylation (RdDM) pathway. These discoveries provide a molecular basis underlying the principles of RdRP function and offer insights into potential advancements in crop breeding and antiviral defense strategies.

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来源期刊

New Phytologist PLANT SCIENCES-

CiteScore

17.60

自引率

5.30%

发文量

728

审稿时长

1 months

期刊介绍： New Phytologist is a leading publication that showcases exceptional and groundbreaking research in plant science and its practical applications. With a focus on five distinct sections - Physiology & Development, Environment, Interaction, Evolution, and Transformative Plant Biotechnology - the journal covers a wide array of topics ranging from cellular processes to the impact of global environmental changes. We encourage the use of interdisciplinary approaches, and our content is structured to reflect this. Our journal acknowledges the diverse techniques employed in plant science, including molecular and cell biology, functional genomics, modeling, and system-based approaches, across various subfields.