RRC ID 48771
Author Denis E, Kbiri N, Mary V, Claisse G, Conde E Silva N, Kreis M, Deveaux Y.
Title WOX14 promotes bioactive gibberellin synthesis and vascular cell differentiation in Arabidopsis.
Journal Plant J
Abstract Procambial and cambial stem cells provide the initial cells that allow the formation of vascular tissues. WOX4 and WOX14 have been shown to act redundantly to promote procambial cell proliferation and differentiation. Gibberellins (GAs), which have an important role in wood formation, also stimulate cambial cell division. Here we show that the loss of WOX14 function phenocopies some traits of GA-deficient mutants that can be complemented by exogenous GA application, whereas WOX14 overexpression stimulates the expression of GA3ox anabolism genes and represses GA2ox catabolism genes, promoting the accumulation of bioactive GA. More importantly, our data clearly indicate that WOX14 but not WOX4 promotes vascular cell differentiation and lignification in inflorescence stems of Arabidopsis.
Volume 90(3)
Pages 560-572
Published 2017-5-1
DOI 10.1111/tpj.13513
PMID 28218997
MeSH Arabidopsis / cytology Arabidopsis / genetics Arabidopsis / metabolism* Arabidopsis Proteins / genetics Arabidopsis Proteins / metabolism* Cambium / metabolism Cell Differentiation / drug effects Gene Expression Regulation, Plant / genetics Gene Expression Regulation, Plant / physiology Gibberellins / metabolism* Homeodomain Proteins / genetics Homeodomain Proteins / metabolism*
IF 6.141
Times Cited 14
Arabidopsis / Cultured plant cells, genes pst13645