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

Details

Serval ID
serval:BIB_4D3E98189453
Type
Article: article from journal or magazin.
Collection
Publications
Title
The moss genes PpSKI1 and PpSKI2 encode nuclear SnRK1 interacting proteins with homologues in vascular plants.
Journal
Plant Molecular Biology
Author(s)
Thelander M., Nilsson A., Olsson T., Johansson M., Girod P.A., Schaefer D.G., Zrÿd J.P., Ronne H.
ISSN
0167-4412
Publication state
Published
Issued date
07/2007
Peer-reviewed
Oui
Volume
64
Number
5
Pages
559-573
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't - Publication Status: ppublish
Abstract
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.
Keywords
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
Create date
13/03/2008 18:29
Last modification date
20/08/2019 14:02
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