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, Sheng Zhu Co-innovation Center for Sustainable Forestry in Southern China, College of Life Sciences, Nanjing Forestry University , Nanjing 210037, China Search for other works by this author on: Oxford Academic Xue-Fen Wei College of Horticulture, Bioinformatics Center, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University , Nanjing 210095, China Search for other works by this author on: Oxford Academic Yu-Xin Lu Co-innovation Center for Sustainable Forestry in Southern China, College of Life Sciences, Nanjing Forestry University , Nanjing 210037, China Search for other works by this author on: Oxford Academic Dao-Wu Zhang Co-innovation Center for Sustainable Forestry in Southern China, College of Life Sciences, Nanjing Forestry University , Nanjing 210037, China Search for other works by this author on: Oxford Academic Ze-Fu Wang College of Ecology and Environment, Nanjing Forestry University , Nanjing 210037, China Search for other works by this author on: Oxford Academic Jing Ge College of Horticulture, Bioinformatics Center, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University , Nanjing 210095, China Search for other works by this author on: Oxford Academic Sheng-Lian Li Co-innovation Center for Sustainable Forestry in Southern China, College of Life Sciences, Nanjing Forestry University , Nanjing 210037, China Search for other works by this author on: Oxford Academic Yan-Feng Song Co-innovation Center for Sustainable Forestry in Southern China, College of Life Sciences, Nanjing Forestry University , Nanjing 210037, China Search for other works by this author on: Oxford Academic Yong Yang Co-innovation Center for Sustainable Forestry in Southern China, College of Life Sciences, Nanjing Forestry University , Nanjing 210037, China Search for other works by this author on: Oxford Academic Xian-Gui Yi Co-innovation Center for Sustainable Forestry in Southern China, College of Life Sciences, Nanjing Forestry University , Nanjing 210037, China Search for other works by this author on: Oxford Academic
, Min Zhang Co-innovation Center for Sustainable Forestry in Southern China, College of Life Sciences, Nanjing Forestry University , Nanjing 210037, China Search for other works by this author on: Oxford Academic Jia-Yu Xue College of Horticulture, Bioinformatics Center, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University , Nanjing 210095, China Corresponding authors. E-mail xuejy@njau.edu.cn; yifanduan@njfu.edu.cn Search for other works by this author on: Oxford Academic Yi-Fan Duan Co-innovation Center for Sustainable Forestry in Southern China, College of Life Sciences, Nanjing Forestry University , Nanjing 210037, China Corresponding authors. E-mail xuejy@njau.edu.cn; yifanduan@njfu.edu.cn Search for other works by this author on: Oxford Academic
Sheng Zhu, Xue Fen Wei and Yu Xin Lu, These authors contributed equally to this work.
Author Notes
Horticulture Research, uhae166, https://doi.org/10.1093/hr/uhae166
Published:
18 June 2024
Article history
Received:
17 January 2024
Revision received:
28 May 2024
Accepted:
10 June 2024
Published:
18 June 2024
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Sheng Zhu, Xue-Fen Wei, Yu-Xin Lu, Dao-Wu Zhang, Ze-Fu Wang, Jing Ge, Sheng-Lian Li, Yan-Feng Song, Yong Yang, Xian-Gui Yi, Min Zhang, Jia-Yu Xue, Yi-Fan Duan, The jacktree genome and population genomics provides insights for the mechanisms of the germination obstacle and the conservation of endangered ornamental plants, Horticulture Research, 2024;, uhae166, https://doi.org/10.1093/hr/uhae166
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Abstract
Sinojackia Hu represents the first woody genus described by Chinese botanists, with all species classified as endangered ornamental plants endemic to China. Their characteristic spindle-shaped fruits confer high ornamental value to the plants, making them favored in gardens and parks. Nevertheless, the fruits likely pose a germination obstacle, contributing to the endangered status of this lineage. Here we report the chromosome-scale genome of S. xylocarpa, and explore the mechanisms underlying its endangered status, as well as its population dynamics throughout evolution. Population genomic analysis has indicated that S. xylocarpa experienced a bottleneck effect following the recent glacial period, leading to a continuous population reduction. Examination of the pericarp composition across six stages of fruit development revealed a consistent increase in the accumulation of lignin and fiber content, responsible for the sturdiness of mature fruits' pericarps. At molecular level, enhanced gene expression in the biosynthesis of lignin, cellulose and hemicellulose was detected in pericarps. Therefore, we conclude that the highly lignified and fibrotic pericarps of S. xylocarpa, which inhibit its seed germination, should be its threatening mechanism, thus proposing corresponding strategies for improved conservation and restoration. This study serves as a seminal contribution to conservation biology, offering valuable insights for the study of other endangered ornamental plants.
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Author notes
Sheng Zhu, Xue Fen Wei and Yu Xin Lu, These authors contributed equally to this work.
© The Author(s) 2024. Published by Oxford University Press.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
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