Abstract
Arising from: Fawzi A. Razem, Ashraf El-Kereamy, Suzanne R. Abrams & Robert D. Hill Nature 439, 290–294 (2006)10.1038/nature04373
The RNA-binding protein FCA promotes flowering in Arabidopsis1. Razem et al.2 reported that FCA is also a receptor for the phytohormone abscisic acid (ABA). However, we find that FCA does not bind ABA, suggesting that the quality of the proteins assayed and the sensitivity of the ABA-binding assay have led Razem et al. to erroneous conclusions. Because similar assays have been used to characterize other ABA receptors3,4, our results indicate that the ABA-binding properties of these proteins should be carefully re-evaluated and that alternative ABA receptors are likely to be discovered.
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References
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Risk, J., Macknight, R. & Day, C. FCA does not bind abscisic acid. Nature 456, E5–E6 (2008). https://doi.org/10.1038/nature07646
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DOI: https://doi.org/10.1038/nature07646
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