Plants have developed a variety of molecular ways to express self-incompatibility (SI) that promote outcrossing by preventing self-fertilization. A new study reveals that Citrus uses the S-RNase as the key molecule for expressing SI, giving us further evidence that the S-RNase system is widespread and evolved in an early branch of angiosperms.
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Fujii, S., Takayama, S. Expanding the RNase world. Nat. Plants 6, 53–54 (2020). https://doi.org/10.1038/s41477-020-0596-4
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DOI: https://doi.org/10.1038/s41477-020-0596-4
