DICER-LIKE1: blind men and elephants in Arabidopsis development.
نویسندگان
چکیده
Genetic studies of embryo, ovule and flower development in Arabidopsis thaliana have led to the independent isolation of different mutant alleles of a single gene (SIN1/SUS1/CAF, now renamed DCL1) that encodes a complex RNA-processing enzyme. DCL1 shows similarity to the Dicer group of genes, which are required for RNA silencing in Drosophila and Caenorhabditis. These recent findings identify a novel but conserved mechanism of post-transcriptional gene regulation that is important for development in eukaryotes.
منابع مشابه
CDC5, a DNA binding protein, positively regulates posttranscriptional processing and/or transcription of primary microRNA transcripts.
CDC5 is a MYB-related protein that exists in plants, animals, and fungi. In Arabidopsis, CDC5 regulates both growth and immunity through unknown mechanisms. Here, we show that CDC5 from Arabidopsis positively regulates the accumulation of microRNAs (miRNAs), which control many biological processes including development and adaptations to environments in plants. CDC5 interacts with both the prom...
متن کاملThe helicase and RNaseIIIa domains of Arabidopsis Dicer-Like1 modulate catalytic parameters during microRNA biogenesis.
Dicer-Like1 (DCL1), an RNaseIII endonuclease, and Hyponastic Leaves1 (HYL1), a double-stranded RNA-binding protein, are core components of the plant microRNA (miRNA) biogenesis machinery. hyl1 null mutants accumulate low levels of miRNAs and display pleiotropic developmental phenotypes. We report the identification of five new hyl1 suppressor mutants, all of which are alleles of DCL1. These new...
متن کاملNegative Feedback Regulation of Dicer-Like1 in Arabidopsis by microRNA-Guided mRNA Degradation
Formation of microRNA (miRNA) requires an RNaseIII domain-containing protein, termed DICER-1 in animals and DICER-LIKE1 (DCL1) in plants, to catalyze processing of an RNA precursor with a fold-back structure. Loss-of-function dcl1 mutants of Arabidopsis have low levels of miRNA and exhibit a range of developmental phenotypes in vegetative, reproductive, and embryonic tissues. In this paper, we ...
متن کاملComplementation of Hyponastic Leaves1 by Double-Strand RNA-Binding Domains of Dicer-Like1 in Nuclear Dicing Bodies1[W][OPEN]
MicroRNAs (miRNAs) are a class of small regulatory RNAs that are found in almost all of the eukaryotes. Arabidopsis (Arabidopsis thaliana) miRNAs are processed from primary miRNAs (pri-miRNAs), mainly by the ribonuclease III-like enzyme DICER-LIKE1 (DCL1) and its specific partner, HYPONASTIC LEAVES1 (HYL1), a double-strand RNA-binding protein, both of which contain two doublestrand RNA-binding ...
متن کاملComplementation of HYPONASTIC LEAVES1 by double-strand RNA-binding domains of DICER-LIKE1 in nuclear dicing bodies.
MicroRNAs (miRNAs) are a class of small regulatory RNAs that are found in almost all of the eukaryotes. Arabidopsis (Arabidopsis thaliana) miRNAs are processed from primary miRNAs (pri-miRNAs), mainly by the ribonuclease III-like enzyme DICER-LIKE1 (DCL1) and its specific partner, HYPONASTIC LEAVES1 (HYL1), a double-strand RNA-binding protein, both of which contain two double-strand RNA-binding...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Trends in plant science
دوره 7 11 شماره
صفحات -
تاریخ انتشار 2002