Hickman, Richard J., Hill, C., Penfold, Christopher A., Breeze, Emily, Bowden, Laura, Moore, Jonathan D., Zhang, Peijun, Jackson, Alison C., Cooke, Emma J., Bewicke-Copley, Findlay, Mead, A. (Andrew), Beynon, Jim, Wild, David L., Denby, Katherine J., Ott, Sascha and Buchanan-Wollaston, Vicky (2013) A local regulatory network around three NAC transcription factors in stress responses and senescence in Arabidopsis leaves. The Plant Journal, Volume 75 (Number 1). pp. 26-39. doi:10.1111/tpj.12194

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Abstract

A model is presented describing the gene regulatory network surrounding three similar NAC transcription factors that have roles in Arabidopsis leaf senescence and stress responses. ANAC019, ANAC055 and ANAC072 belong to the same clade of NAC domain genes and have overlapping expression patterns. A combination of promoter DNA/protein interactions identified using yeast 1-hybrid analysis and modelling using gene expression time course data has been applied to predict the regulatory network upstream of these genes. Similarities and divergence in regulation during a variety of stress responses are predicted by different combinations of upstream transcription factors binding and also by the modelling. Mutant analysis with potential upstream genes was used to test and confirm some of the predicted interactions. Gene expression analysis in mutants of ANAC019 and ANAC055 at different times during leaf senescence has revealed a distinctly different role for each of these genes. Yeast 1-hybrid analysis is shown to be a valuable tool that can distinguish clades of binding proteins and be used to test and quantify protein binding to predicted promoter motifs.

Item Type:	Journal Article
Subjects:	Q Science > QH Natural history > QH301 Biology Q Science > QH Natural history > QH426 Genetics
Divisions:	Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) Faculty of Science, Engineering and Medicine > Research Centres > Molecular Organisation and Assembly in Cells (MOAC) Faculty of Science, Engineering and Medicine > Research Centres > Warwick Systems Biology Centre
Library of Congress Subject Headings (LCSH):	Arabidopsis thaliana, Plant genetics
Journal or Publication Title:	The Plant Journal
Publisher:	Wiley-Blackwell Publishing Ltd.
ISSN:	0960-7412
Official Date:	July 2013
Dates:	Date Event July 2013 Published
Volume:	Volume 75
Number:	Number 1
Page Range:	pp. 26-39
DOI:	10.1111/tpj.12194
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Open Access
Funder:	Engineering and Physical Sciences Research Council (EPSRC), Biotechnology and Biological Sciences Research Council (Great Britain) (BBSRC)
Grant number:	EP/I036575/1 (EPSRC) ; BB/F005806/1 (BBSRC)

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