The Chinese pine genome and methylome unveil key features of conifer evolution. Niu, S., Li, J., Bo, W., Yang, W., Zuccolo, A., Giacomello, S., Chen, X., Han, F., Yang, J., Song, Y., Nie, Y., Zhou, B., Wang, P., Zuo, Q., Zhang, H., Ma, J., Wang, J., Wang, L., Zhu, Q., Zhao, H., Liu, Z., Zhang, X., Liu, T., Pei, S., Li, Z., Hu, Y., Yang, Y., Li, W., Zan, Y., Zhou, L., Lin, J., Yuan, T., Li, W., Li, Y., Wei, H., & Wu, H. X. Cell, 185(1):204–217.e14, January, 2022. ![The Chinese pine genome and methylome unveil key features of conifer evolution [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Conifers dominate the world’s forest ecosystems and are the most widely planted tree species. Their giant and complex genomes present great challenges for assembling a complete reference genome for evolutionary and genomic studies. We present a 25.4-Gb chromosome-level assembly of Chinese pine (Pinus tabuliformis) and revealed that its genome size is mostly attributable to huge intergenic regions and long introns with high transposable element (TE) content. Large genes with long introns exhibited higher expressions levels. Despite a lack of recent whole-genome duplication, 91.2% of genes were duplicated through dispersed duplication, and expanded gene families are mainly related to stress responses, which may underpin conifers’ adaptation, particularly in cold and/or arid conditions. The reproductive regulation network is distinct compared with angiosperms. Slow removal of TEs with high-level methylation may have contributed to genomic expansion. This study provides insights into conifer evolution and resources for advancing research on conifer adaptation and development.
@article{niu_chinese_2022,
title = {The {Chinese} pine genome and methylome unveil key features of conifer evolution},
volume = {185},
issn = {0092-8674, 1097-4172},
url = {https://www.cell.com/cell/abstract/S0092-8674(21)01428-8},
doi = {10/gnw8q5},
abstract = {Conifers dominate the world’s forest ecosystems and are the most widely planted tree species. Their giant and complex genomes present great challenges for assembling a complete reference genome for evolutionary and genomic studies. We present a 25.4-Gb chromosome-level assembly of Chinese pine (Pinus tabuliformis) and revealed that its genome size is mostly attributable to huge intergenic regions and long introns with high transposable element (TE) content. Large genes with long introns exhibited higher expressions levels. Despite a lack of recent whole-genome duplication, 91.2\% of genes were duplicated through dispersed duplication, and expanded gene families are mainly related to stress responses, which may underpin conifers’ adaptation, particularly in cold and/or arid conditions. The reproductive regulation network is distinct compared with angiosperms. Slow removal of TEs with high-level methylation may have contributed to genomic expansion. This study provides insights into conifer evolution and resources for advancing research on conifer adaptation and development.},
language = {English},
number = {1},
urldate = {2022-02-04},
journal = {Cell},
author = {Niu, Shihui and Li, Jiang and Bo, Wenhao and Yang, Weifei and Zuccolo, Andrea and Giacomello, Stefania and Chen, Xi and Han, Fangxu and Yang, Junhe and Song, Yitong and Nie, Yumeng and Zhou, Biao and Wang, Peiyi and Zuo, Quan and Zhang, Hui and Ma, Jingjing and Wang, Jun and Wang, Lvji and Zhu, Qianya and Zhao, Huanhuan and Liu, Zhanmin and Zhang, Xuemei and Liu, Tao and Pei, Surui and Li, Zhimin and Hu, Yao and Yang, Yehui and Li, Wenzhao and Zan, Yanjun and Zhou, Linghua and Lin, Jinxing and Yuan, Tongqi and Li, Wei and Li, Yue and Wei, Hairong and Wu, Harry X.},
month = jan,
year = {2022},
keywords = {Chinese pine, chromosome-level genome, climate adaptation, conifer evolution, conifer reproduction, gene expression, genome expansion, long intron, methylome},
pages = {204--217.e14},
}
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Their giant and complex genomes present great challenges for assembling a complete reference genome for evolutionary and genomic studies. We present a 25.4-Gb chromosome-level assembly of Chinese pine (Pinus tabuliformis) and revealed that its genome size is mostly attributable to huge intergenic regions and long introns with high transposable element (TE) content. Large genes with long introns exhibited higher expressions levels. Despite a lack of recent whole-genome duplication, 91.2% of genes were duplicated through dispersed duplication, and expanded gene families are mainly related to stress responses, which may underpin conifers’ adaptation, particularly in cold and/or arid conditions. The reproductive regulation network is distinct compared with angiosperms. Slow removal of TEs with high-level methylation may have contributed to genomic expansion. 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