DRB4-dependent TAS3 trans-acting siRNAs control leaf morphology through AGO7.
Xavier Adenot,Taline Elmayan,Dominique Lauressergues,Stéphanie Boutet,Nicolas Bouché,Virginie Gasciolli,Hervé Vaucheret +6 more
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TLDR
Results indicate that the dsRNA binding protein DRB4 is required for proper ta-siRNA production, presumably by interacting with DCL4, an interaction analogous to that of HYL1 with D CL1 during miRNA production , and that TAS3 ta-SIRNAs are required for Proper leaf development through the action of AGO7/ZIPPY.About:
This article is published in Current Biology.The article was published on 2006-05-09 and is currently open access. It has received 440 citations till now. The article focuses on the topics: Mutant & Null allele.read more
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A diverse and evolutionarily fluid set of microRNAs in Arabidopsis thaliana
TL;DR: The results revealed the existence of a layer of miRNA-based control beyond that found previously that is evolutionarily much more fluid, employing many newly emergent and diverse miRNAs, each expressed in specialized tissues or at low levels under standard growth conditions.
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Sorting of Small RNAs into Arabidopsis Argonaute Complexes Is Directed by the 5′ Terminal Nucleotide
Shijun Mi,Tao Cai,Yugang Hu,Yemiao Chen,Emily Hodges,Fangrui Ni,Liang Wu,Shan Li,Huanyu Zhou,Chengzu Long,She Chen,Gregory J. Hannon,Yijun Qi +12 more
TL;DR: In this paper, small RNAs resident in four AGO complexes were cataloged, and it was found that AGO2 and AGO4 preferentially recruit small RNIs with a 5' terminal adenosine, whereas AGO1 harbors microRNAs (miRNAs) that favor a 5" terminal uridine.
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Auxin response factors.
Tom J. Guilfoyle,Gretchen Hagen +1 more
TL;DR: Recent advances have provided information on regulation of ARF gene expression, ARF roles in growth and developmental processes, and target genes regulated by ARFs.
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Small RNAs and Their Roles in Plant Development
TL;DR: The biogenesis and function of three major classes of endogenous small RNAs in plants: microRNAs, trans-acting si RNAs, and heterochromatic siRNAs are reviewed, with an emphasis on the roles of these smallRNAs in developmental regulation.
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Control of jasmonate biosynthesis and senescence by miR319 targets.
Carla Schommer,Javier F. Palatnik,Pooja Aggarwal,Aurore Chételat,Pilar Cubas,Edward E. Farmer,Utpal Nath,Detlef Weigel +7 more
TL;DR: It is proposed that miR319-controlled TCP transcription factors coordinate two sequential processes in leaf development: leaf growth and leaf senescence, which they positively regulate.
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microRNA-Directed Phasing during Trans-Acting siRNA Biogenesis in Plants
TL;DR: Data support a model in which miRNA-guided formation of a 5' or 3' terminus within pre-ta-siRNA transcripts, followed by RDR6-dependent formation of dsRNA and Dicer-like processing, yields phased ta-siRNAs that negatively regulate other genes.
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An RNA-Dependent RNA Polymerase Gene in Arabidopsis Is Required for Posttranscriptional Gene Silencing Mediated by a Transgene but Not by a Virus
TL;DR: It is proposed that the role of SDE1 is to synthesize a double-stranded RNA initiator of posttranscriptional gene silencing, according to this idea, when a virus induces posttranscriptal genesilencing, the virus-encoded RNA polymerase would produce the double-Stranded RNA and Sde1 would be redundant.
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Arabidopsis SGS2 and SGS3 Genes Are Required for Posttranscriptional Gene Silencing and Natural Virus Resistance
Philippe Mourrain,Christophe Béclin,Taline Elmayan,Frank Feuerbach,Christian Godon,Jean-Benoit Morel,David Jouette,Anne-Marie Lacombe,Snezana Nikic,Nathalie Picault,Karine Rémoué,Mathieu Sanial,Truy-Anh Vo,Hervé Vaucheret +13 more
TL;DR: Both sgs2 and sgs3 mutants show enhanced susceptibility to virus, definitively proving that PTGS is an antiviral defense mechanism that can also target transgene RNA for degradation.
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Arabidopsis ARGONAUTE1 is an RNA Slicer that selectively recruits microRNAs and short interfering RNAs.
N. Baumberger,David C. Baulcombe +1 more
TL;DR: It is shown that AGO1 selectively recruits certain classes of short silencing-related RNA, and it is predicted that other Arabidopsis AGOs might have a similar catalytic activity but recruit different subsets of siRNAs or miRNAs.
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Perspective: machines for RNAi
TL;DR: The current understanding of how small RNAs are produced, how they are loaded into protein complexes, and how they repress gene expression is reviewed.