Authors
Brady, Siobhan M.Zhang, Lifang
Megraw, Molly
Martinez, Natalia Julia
Jiang, Eric
Yi, Charles S.
Liu, Weilin
Zeng, Anna
Taylor-Teeples, Mallorie
Kim, Dahae
Ahnert, Sebastian
Ohler, Uwe
Ware, Doreen
Walhout, Albertha J. M.
Benfey, Philip N.
Document Type
Journal ArticlePublication Date
2011-01-18Keywords
ArabidopsisArabidopsis Proteins
Gene Expression Profiling
Gene Regulatory Networks
MicroRNAs
Plant Roots
Reproducibility of Results
Systems Biology
Transcription Factors
Two-Hybrid System Techniques
Genetics and Genomics
Metadata
Show full item recordAbstract
Tightly controlled gene expression is a hallmark of multicellular development and is accomplished by transcription factors (TFs) and microRNAs (miRNAs). Although many studies have focused on identifying downstream targets of these molecules, less is known about the factors that regulate their differential expression. We used data from high spatial resolution gene expression experiments and yeast one-hybrid (Y1H) and two-hybrid (Y2H) assays to delineate a subset of interactions occurring within a gene regulatory network (GRN) that determines tissue-specific TF and miRNA expression in plants. We find that upstream TFs are expressed in more diverse cell types than their targets and that promoters that are bound by a relatively large number of TFs correspond to key developmental regulators. The regulatory consequence of many TFs for their target was experimentally determined using genetic analysis. Remarkably, molecular phenotypes were identified for 65% of the TFs, but morphological phenotypes were associated with only 16%. This indicates that the GRN is robust, and that gene expression changes may be canalized or buffered.Source
Mol Syst Biol. 2011 Jan 18;7:459. Link to article on publisher's siteDOI
10.1038/msb.2010.114Permanent Link to this Item
http://hdl.handle.net/20.500.14038/43959PubMed ID
21245844Related Resources
Link to Article in PubMedRights
This is an open-access article distributed under the terms of the Creative Commons Attribution Noncommercial Share Alike 3.0 Unported License, which allows readers to alter, transform, or build upon the article and then distribute the resulting work under the same or similar license to this one. The work must be attributed back to the original author and commercial use is not permitted without specific permission.ae974a485f413a2113503eed53cd6c53
10.1038/msb.2010.114