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The Larix kaempferi genome reveals new insights into wood properties

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Abstract
Here, through single-molecule real-time (SMRT) sequencing, we present a high-quality genome sequence of the Japanese larch (Larix kaempferi), a conifer species with great value for wood production and ecological afforestation. The assembled genome is 10.97 Gb in size, harboring 45,828 protein-coding genes. 66.8% of the genome consists of repeat sequences, of which LTR-RTs are dominant and make up 69.86%. We find that tandem duplications have been responsible for the expansion of genes involved in transcriptional regulation and stress responses, unveiling their crucial roles in adaptive evolution. Population transcriptome analysis reveals that lignin content in L. kaempferi is mainly determined by the process of monolignols polymerization. The expression values of six genes (LkCOMT7, LkCOMT8, LkLAC23, LkLAC102, LkPRX148 and LkPRX166) have significantly positive correlations with lignin content. These results indicated that the increased expression of these six genes might be responsible for the high lignin content of the larches' wood. Overall, this study provides new genome resources for investigating the evolution and biological function of conifer trees, and also offers new insights into wood properties of larches.
Keywords
Larix kaempferi, evolution, gene expression, genome, wood properties, General Biochemistry, Genetics and Molecular Biology, Biochemistry, DOWN-REGULATION, JAPANESE LARCH, NORWAY SPRUCE, WHOLE-GENOME, LIGNIN, BIOSYNTHESIS, SEQUENCE, PINE, DIVERSIFICATION, LIGNIFICATION

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MLA
Sun, Chao, et al. “The Larix Kaempferi Genome Reveals New Insights into Wood Properties.” JOURNAL OF INTEGRATIVE PLANT BIOLOGY, vol. 64, no. 7, 2022, pp. 1364–73, doi:10.1111/jipb.13265.
APA
Sun, C., Xie, Y., Li, Z., Liu, Y., Sun, X., Li, J., … Zhang, S. (2022). The Larix kaempferi genome reveals new insights into wood properties. JOURNAL OF INTEGRATIVE PLANT BIOLOGY, 64(7), 1364–1373. https://doi.org/10.1111/jipb.13265
Chicago author-date
Sun, Chao, Yun‐hui Xie, Zhen Li, Yan‐jing Liu, Xiao‐mei Sun, Jing‐jing Li, Wei‐peng Quan, Qing‐yin Zeng, Yves Van de Peer, and Shou‐gong Zhang. 2022. “The Larix Kaempferi Genome Reveals New Insights into Wood Properties.” JOURNAL OF INTEGRATIVE PLANT BIOLOGY 64 (7): 1364–73. https://doi.org/10.1111/jipb.13265.
Chicago author-date (all authors)
Sun, Chao, Yun‐hui Xie, Zhen Li, Yan‐jing Liu, Xiao‐mei Sun, Jing‐jing Li, Wei‐peng Quan, Qing‐yin Zeng, Yves Van de Peer, and Shou‐gong Zhang. 2022. “The Larix Kaempferi Genome Reveals New Insights into Wood Properties.” JOURNAL OF INTEGRATIVE PLANT BIOLOGY 64 (7): 1364–1373. doi:10.1111/jipb.13265.
Vancouver
1.
Sun C, Xie Y, Li Z, Liu Y, Sun X, Li J, et al. The Larix kaempferi genome reveals new insights into wood properties. JOURNAL OF INTEGRATIVE PLANT BIOLOGY. 2022;64(7):1364–73.
IEEE
[1]
C. Sun et al., “The Larix kaempferi genome reveals new insights into wood properties,” JOURNAL OF INTEGRATIVE PLANT BIOLOGY, vol. 64, no. 7, pp. 1364–1373, 2022.
@article{8753222,
  abstract     = {{Here, through single-molecule real-time (SMRT) sequencing, we present a high-quality genome sequence of the Japanese larch (Larix kaempferi), a conifer species with great value for wood production and ecological afforestation. The assembled genome is 10.97 Gb in size, harboring 45,828 protein-coding genes. 66.8% of the genome consists of repeat sequences, of which LTR-RTs are dominant and make up 69.86%. We find that tandem duplications have been responsible for the expansion of genes involved in transcriptional regulation and stress responses, unveiling their crucial roles in adaptive evolution. Population transcriptome analysis reveals that lignin content in L. kaempferi is mainly determined by the process of monolignols polymerization. The expression values of six genes (LkCOMT7, LkCOMT8, LkLAC23, LkLAC102, LkPRX148 and LkPRX166) have significantly positive correlations with lignin content. These results indicated that the increased expression of these six genes might be responsible for the high lignin content of the larches' wood. Overall, this study provides new genome resources for investigating the evolution and biological function of conifer trees, and also offers new insights into wood properties of larches.}},
  author       = {{Sun, Chao and Xie, Yun‐hui and Li, Zhen and Liu, Yan‐jing and Sun, Xiao‐mei and Li, Jing‐jing and Quan, Wei‐peng and Zeng, Qing‐yin and Van de Peer, Yves and Zhang, Shou‐gong}},
  issn         = {{1672-9072}},
  journal      = {{JOURNAL OF INTEGRATIVE PLANT BIOLOGY}},
  keywords     = {{Larix kaempferi,evolution,gene expression,genome,wood properties,General Biochemistry,Genetics and Molecular Biology,Biochemistry,DOWN-REGULATION,JAPANESE LARCH,NORWAY SPRUCE,WHOLE-GENOME,LIGNIN,BIOSYNTHESIS,SEQUENCE,PINE,DIVERSIFICATION,LIGNIFICATION}},
  language     = {{eng}},
  number       = {{7}},
  pages        = {{1364--1373}},
  title        = {{The Larix kaempferi genome reveals new insights into wood properties}},
  url          = {{http://doi.org/10.1111/jipb.13265}},
  volume       = {{64}},
  year         = {{2022}},
}

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