Nature Communications (Nov 2024)

Genome sequencing of ‘Fuji’ apple clonal varieties reveals genetic mechanism of the spur-type morphology

  • Yudong Cai,
  • Xiuhua Gao,
  • Jiangping Mao,
  • Yu Liu,
  • Lu Tong,
  • Xilong Chen,
  • Yandong Liu,
  • Wenyan Kou,
  • Chuanjun Chang,
  • Toshi Foster,
  • Jialong Yao,
  • Amandine Cornille,
  • Muhammad Mobeen Tahir,
  • Zhi Liu,
  • Zhongye Yan,
  • Siyi Lin,
  • Fengwang Ma,
  • Juanjuan Ma,
  • Libo Xing,
  • Na An,
  • Xiya Zuo,
  • Yanrong Lv,
  • Zhengyang Zhao,
  • Wenqiang Li,
  • Qianjin Li,
  • Caiping Zhao,
  • Yanan Hu,
  • Hangkong Liu,
  • Chao Wang,
  • Xueyan Shi,
  • Doudou Ma,
  • Zhangjun Fei,
  • Yu Jiang,
  • Dong Zhang

DOI
https://doi.org/10.1038/s41467-024-54428-2
Journal volume & issue
Vol. 15, no. 1
pp. 1 – 14

Abstract

Read online

Abstract Somatic variations can give rise to bud sports with advantageous traits, serving as the foundation for bud sport breeding in perennial plants. Here, we report a fully phased genome assembly of ‘Fuji’ apple, enabling comprehensive identification of somatic variants across 74 clonally propagated ‘Fuji’ varieties. Phylogenetic analysis indicates that spur-type and early-maturation traits in ‘Fuji’ sport varieties arise from multiple independent events. Several putative functional somatic variants have been identified, including a spur-type-specific deletion in the promoter of the TCP transcription factor gene MdTCP11. DNA methylation level of the deletion-associated miniature inverted-repeat transposable element is lower in spur-type varieties compared to standard-type varieties, while the expression of MdTCP11 is significantly higher. Overexpression of MdTCP11 in apple decreases plant height, highlighting its important role in the development of spur-type apple varieties. This study sheds light on the cloning history of ‘Fuji’ and provides valuable resources for apple breeding.