Identification of an F-box protein that negatively regulates P(i) starvation responses |
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Authors: | Chen Zhi-Hui Jenkins Gareth I Nimmo Hugh G |
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Affiliation: | Plant Science Group, Division of Biochemistry & Molecular Biology, Faculty of Biomedical & Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK. |
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Abstract: | The Arabidopsis gene At5g21040 encodes a protein containing both WD40 and F-box motifs, termed FBX2. A T-DNA insertional mutant in this gene was obtained. Analysis of this mutant line showed that FBX2 is a negative regulator of several P(i) starvation responses. FBX2 interacts with BHLH32, another negative regulator of P(i) starvation responses. We suggest that FBX2 may be part of an SCF-like complex that recruits BHLH32 and its partners, potentially targeting the latter for proteolysis. |
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