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Trans-acting small RNA determines dominance relationships in Brassica self-incompatibility

Author

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  • Yoshiaki Tarutani

    (Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
    Present addresses: Department of Integrated Genetics, National Institute of Genetics, 1111 Yata, Mishima, Shizuoka 411-8540, Japan (Y.T.); Vegetable Breeding Research Team, National Institute of Vegetable and Tea Science, Ano, Mie 514-2392, Japan (T.K.).)

  • Hiroshi Shiba

    (Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan)

  • Megumi Iwano

    (Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan)

  • Tomohiro Kakizaki

    (Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka 020-8550, Japan
    Present addresses: Department of Integrated Genetics, National Institute of Genetics, 1111 Yata, Mishima, Shizuoka 411-8540, Japan (Y.T.); Vegetable Breeding Research Team, National Institute of Vegetable and Tea Science, Ano, Mie 514-2392, Japan (T.K.).)

  • Go Suzuki

    (Osaka Kyoiku University, 4-698-1 Asahigaoka, Kashiwara, Osaka 582-8582, Japan)

  • Masao Watanabe

    (Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan)

  • Akira Isogai

    (Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan)

  • Seiji Takayama

    (Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan)

Abstract

Dominant role for sRNA In diploid organisms, the expression levels of the two inherited alleles can be biased by dominant or recessive relationships, which determine the final phenotype. In Brassica, self-incompatibility in pollen is determined by dominance relationships between the two alleles of the pollen determinant gene SP11. These relationships are now shown to be controlled by a small non-coding RNA (sRNA) encoded at the SP11 flanking region. The sRNA, derived from the dominant SP11 allele, acts in trans to induce DNA methylation, silencing the recessive allele. This finding could suggest a more general role for sRNA in controlling monoallelic gene expression, which was recently found to be widespread in heterozygous organisms.

Suggested Citation

  • Yoshiaki Tarutani & Hiroshi Shiba & Megumi Iwano & Tomohiro Kakizaki & Go Suzuki & Masao Watanabe & Akira Isogai & Seiji Takayama, 2010. "Trans-acting small RNA determines dominance relationships in Brassica self-incompatibility," Nature, Nature, vol. 466(7309), pages 983-986, August.
    • Handle: RePEc:nat:nature:v:466:y:2010:i:7309:d:10.1038_nature09308
    DOI: 10.1038/nature09308
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    Cited by:

    1. Chow-Lih Yew & Takashi Tsuchimatsu & Rie Shimizu-Inatsugi & Shinsuke Yasuda & Masaomi Hatakeyama & Hiroyuki Kakui & Takuma Ohta & Keita Suwabe & Masao Watanabe & Seiji Takayama & Kentaro K. Shimizu, 2023. "Dominance in self-compatibility between subgenomes of allopolyploid Arabidopsis kamchatica shown by transgenic restoration of self-incompatibility," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    2. Takeshi Matsui & Martin N. Mullis & Kevin R. Roy & Joseph J. Hale & Rachel Schell & Sasha F. Levy & Ian M. Ehrenreich, 2022. "The interplay of additivity, dominance, and epistasis on fitness in a diploid yeast cross," Nature Communications, Nature, vol. 13(1), pages 1-14, December.

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