The moss genes PpSKI1 and PpSKI2 encode nuclear SnRK1 interacting proteins with homologues in vascular plants.

Détails

ID Serval
serval:BIB_4D3E98189453
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
The moss genes PpSKI1 and PpSKI2 encode nuclear SnRK1 interacting proteins with homologues in vascular plants.
Périodique
Plant Molecular Biology
Auteur(s)
Thelander M., Nilsson A., Olsson T., Johansson M., Girod P.A., Schaefer D.G., Zrÿd J.P., Ronne H.
ISSN
0167-4412
Statut éditorial
Publié
Date de publication
07/2007
Peer-reviewed
Oui
Volume
64
Numéro
5
Pages
559-573
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't - Publication Status: ppublish
Résumé
The yeast Snf1, animal AMPK, and plant SnRK1 protein kinases constitute a family of related proteins that have been proposed to serve as metabolic sensors of the eukaryotic cell. We have previously reported the characterization of two redundant SnRK1 encoding genes (PpSNF1a and PpSNF1b) in the moss Physcomitrella patens. Phenotypic analysis of the snf1a snf1b double knockout mutant suggested that SnRK1 is important for the plant's ability to recognize and adapt to conditions of limited energy supply, and also suggested a possible role of SnRK1 in the control of plant development. We have now used a yeast two-hybrid system to screen for PpSnf1a interacting proteins. Two new moss genes were found, PpSKI1 and PpSKI2, which encode highly similar proteins with homologues in vascular plants. Fusions of the two encoded proteins to the green fluorescent protein localize to the nucleus. Knockout mutants for either gene have an excess of gametophores under low light conditions, and exhibit reduced gametophore stem lengths. Possible functions of the new proteins and their connection to the SnRK1 kinase are discussed.
Mots-clé
Amino Acid Sequence, Bryophyta/enzymology, Bryophyta/genetics, Conserved Sequence, Gene Deletion, Gene Expression Regulation, Enzymologic/drug effects, Gene Expression Regulation, Plant/drug effects, Genotype, Molecular Sequence Data, Multigene Family, Protein-Serine-Threonine Kinases/chemistry, Protein-Serine-Threonine Kinases/genetics, Reverse Transcriptase Polymerase Chain Reaction, Saccharomyces cerevisiae/enzymology, Saccharomyces cerevisiae/genetics, Sequence Alignment, Sequence Homology, Amino Acid
Pubmed
Web of science
Création de la notice
13/03/2008 19:29
Dernière modification de la notice
03/03/2018 17:02
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