...Vinh Ngoc Pham; Xiaosa Xu; Enamul Huq ABSTRACT The transition from skotomorphogenesis to photomorphogenesis is regulated in part by the COP1/SPA complex and phytochrome-interacting factors (PIFs) in Arabidopsis . The constitutive photomorphogenic (cop) phenotypes of cop1 and spaQ mutants have been...

...Xiaosa Xu; Praveen Kumar Kathare; Vinh Ngoc Pham; Qingyun Bu; Andrew Nguyen; Enamul Huq The phytochrome-mediated regulation of photomorphogenesis under red and far-red light conditions involves both positively and negatively acting factors. The positively acting factors (e.g. HY5/HFR1/LAF1...

... of BAS1 and SOB7 abolishes the short-hypocotyl phenotype of ATAF2 loss-of-function seedlings in low fluence rate white light, demonstrating an ATAF2-mediated connection between BR catabolism and photomorphogenesis. ATAF2 expression is suppressed by both BRs and light, which demonstrates the existence...

... of photomorphogenesis COP1 and the receptor-like protein TMM. The effect of exogenous auxin required the ER family of leucine-rich repeat receptor-like kinases, suggesting that auxin acts at least in part through the ER family. Expression of axr3-1 in the stomatal lineage was insufficient to alter the stomatal index...

... The authors declare no competing financial interests. © 2013. Published by The Company of Biologists Ltd 2013 Brassinosteroid Gibberellin Photomorphogenesis Receptor kinase Steroid hormones regulate gene expression and development in both plants and animals. Brassinosteroid (BR...

... the function of the key repressor of photomorphogenesis SPA1 in different tissues of the plant by expressing GUS-SPA1 under the control of tissue-specific promoters in a spa mutant background. We show that SPA1 expression in the phloem vasculature is sufficient to rescue the spa1 mutant phenotype in dark-grown...

... is involved in the hook exaggeration phenotype induced by ethylene. * Author for correspondence ( [email protected] ) Competing interests statement 6 12 2009 © 2010. Apical hook Auxin biosynthesis Auxin transport Ethylene Photomorphogenesis...

...Sascha Laubinger; Virginie Marchal; José Gentilhomme; Stephan Wenkel; Jessika Adrian; Seonghoe Jang; Carmen Kulajta; Helen Braun; George Coupland; Ute Hoecker The four-member SPA protein family of Arabidopsis acts in concert with the E3 ubiquitin ligase COP1 to suppress photomorphogenesis in dark...

... seedlings, whereby light not only inhibits hypocotyl growth, but also activates a PRC1 -independent cell elongation program. * Author for correspondence 07 11 1995 © 1996 by Company of Biologists 1996 phytochrome cryptochrome cell wall expansion photomorphogenesis...