A Novel fry1 Allele Reveals the Existence of a Mutant Phenotype Unrelated to 5′->3′ Exoribonuclease (XRN) Activities in Arabidopsis thaliana Roots
Hirsch, Judith; Misson, Julie; Crisp, Peter A.; David, Pascale; Bayle, Vincent; Estavillo, Gonzalo M.; Javot, Hélène; Chiarenza, Serge; Mallory, Allison C.; Maizel, Alexis; Declerck, Marie; Pogson, Barry; Vaucheret, Hervé; Crespi, Martin; Desnos, Thierry; Thibaud, Marie-Christine; Nussaume, Laurent; Marin, Elena
BACKGROUND Mutations in the FRY1/SAL1 Arabidopsis locus are highly pleiotropic, affecting drought tolerance, leaf shape and root growth. FRY1 encodes a nucleotide phosphatase that in vitro has inositol polyphosphate 1-phosphatase and 3',(2'),5'-bisphosphate nucleotide phosphatase activities. It is not clear which activity mediates each of the diverse biological functions of FRY1 in planta. PRINCIPAL FINDINGS A fry1 mutant was identified in a genetic screen for Arabidopsis mutants deregulated in...[Show more]
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