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A nonS-locus F-box gene breaks self-incompatibility in diploid potatoes

Author

Listed:
  • Ling Ma

    (Yunnan Normal University)

  • Chunzhi Zhang

    (Chinese Academy of Agricultural Sciences)

  • Bo Zhang

    (Yunnan Normal University)

  • Fei Tang

    (Yunnan Normal University)

  • Futing Li

    (Yunnan Normal University)

  • Qinggang Liao

    (Chinese Academy of Agricultural Sciences)

  • Die Tang

    (Chinese Academy of Agricultural Sciences)

  • Zhen Peng

    (Beijing University of Agriculture)

  • Yuxin Jia

    (Chinese Academy of Agricultural Sciences)

  • Meng Gao

    (Yunnan Normal University)

  • Han Guo

    (Chinese Academy of Sciences)

  • Jinzhe Zhang

    (Chinese Academy of Agricultural Sciences)

  • Xuming Luo

    (Chinese Academy of Agricultural Sciences)

  • Huiqin Yang

    (Yunnan Normal University)

  • Dongli Gao

    (Yunnan Normal University)

  • William J. Lucas

    (Chinese Academy of Agricultural Sciences
    University of California)

  • Canhui Li

    (Yunnan Normal University)

  • Sanwen Huang

    (Chinese Academy of Agricultural Sciences)

  • Yi Shang

    (Yunnan Normal University)

Abstract

Potato is the third most important staple food crop. To address challenges associated with global food security, a hybrid potato breeding system, aimed at converting potato from a tuber-propagated tetraploid crop into a seed-propagated diploid crop through crossing inbred lines, is under development. However, given that most diploid potatoes are self-incompatible, this represents a major obstacle which needs to be addressed in order to develop inbred lines. Here, we report on a self-compatible diploid potato, RH89-039-16 (RH), which can efficiently induce a mating transition from self-incompatibility to self-compatibility, when crossed to self-incompatible lines. We identify the S-locusinhibitor (Sli) gene in RH, capable of interacting with multiple allelic variants of the pistil-specific S-ribonucleases (S-RNases). Further, Sli gene functions like a general S-RNase inhibitor, to impart SC to RH and other self-incompatible potatoes. Discovery of Sli now offers a path forward for the diploid hybrid breeding program.

Suggested Citation

  • Ling Ma & Chunzhi Zhang & Bo Zhang & Fei Tang & Futing Li & Qinggang Liao & Die Tang & Zhen Peng & Yuxin Jia & Meng Gao & Han Guo & Jinzhe Zhang & Xuming Luo & Huiqin Yang & Dongli Gao & William J. Lu, 2021. "A nonS-locus F-box gene breaks self-incompatibility in diploid potatoes," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-24266-7
    DOI: 10.1038/s41467-021-24266-7
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