Abstract
We isolated several mutants of Arabidopsis thaliana (L.) Heynh. that accumulated less anthocyanin in the plant tissues, but had seeds with a brown color similar to the wild-type. These mutants were allelic with the anthocyaninless1 (anl1) mutant that has been mapped at 15.0 cM of chromosome 5. We performed fine mapping of the anl1 locus and determined that ANL1 is located between the nga106 marker and a marker corresponding to the MKP11 clone. About 70 genes are located between these two markers, including three UDP-glucose:flavonoid-3-O-glucosyltransferase-like genes and a glutathione transferase gene (TT19). A mutant of one of the glucosyltransferase genes (At5g17050) was unable to complement the anl1 phenotype, showing that the ANL1 gene encodes UDP-glucose:flavonoid-3-O-glucosyltransferase. ANL1 was expressed in all tissues examined, including rosette leaves, stems, flower buds and roots. ANL1 was not regulated by TTG1.
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Acknowledgments
We thank Dr. Maarten Koornneef for the gift of anl1-1 seeds. We also thank ABRC and The Salk Institute Genomic Analysis Laboratory for providing the T-DNA insertion mutants.
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Kubo, H., Nawa, N. & Lupsea, S.A. Anthocyaninless1 gene of Arabidopsis thaliana encodes a UDP-glucose:flavonoid-3-O-glucosyltransferase. J Plant Res 120, 445–449 (2007). https://doi.org/10.1007/s10265-006-0067-7
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DOI: https://doi.org/10.1007/s10265-006-0067-7