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Genome assembly provided new insights into the Cinnamomum burmannii evolution and D-borneol biosynthesis differences between chemotypes

文献类型： 外文期刊

作者： Li, Fangping 1 ; Huang, Shilin 3 ; Mei, Yu 1 ; Wu, Bingqi 3 ; Hou, Zhuangwei 3 ; Zhan, Penglin 3 ; Hou, Zhihao 3 ; Huang, Wenjie 4 ; Zhao, Junliang 2 ; Wang, Jihua 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Crops Res Inst, Guangdong Prov Key Lab Crops Genet & Improvement, Guangzhou 510640, Peoples R China

2.Guangdong Acad Agr Sci, Rice Res Inst, Guangzhou 510640, Peoples R China

3.South China Agr Univ, Guangdong Prov Key Lab Plant Mol Breeding, State Key Lab Conservat & Utilizat Subtrop Agrobio, Guangzhou 510642, Peoples R China

4.Guangdong Acad Agr Sci, Agrobiol Gene Res Ctr, Guangzhou 510640, Peoples R China

5.Guangdong Acad Agr Sci, Guangdong Key Lab New Technol Rice Breeding, Guangzhou 510640, Peoples R China

6.Guangdong Acad Agr Sci, Guangdong Rice Engn Lab, Guangzhou 510640, Peoples R China

关键词： Cinnamomum species; Cinnamomum burmannii; Genome; D-borneol; Chemotypes

期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：6.449； 五年影响因子：6.508 ）

ISSN： 0926-6690

年卷期： 2022 年 186 卷

页码：

收录情况： SCI

摘要： D-Borneol is a precious monoterpenoid widely used in the pharmaceutical and cosmetic industries. Cinnamomum burmannii (Nees et T.Nees) Blume (C. burmannii) is one of the key resources for D-Borneol. However, only one chemotype of C. burmannii contain high content of D-Borneol in its leaves and stems. Limited by little information from C. burmannii, the D-Borneol biosynthesis mechanisms, as well as the mechanisms underlying the D-Borneol production differences among chemotypes remains elusive. To fill these gaps, we generated a completed genome of a high D-Borneol content chemotype of C. burmannii. Phylogenetic analysis suggests that C. burmannii is sister to a clade containing C. camphora and C. kanehirae while the variations of chromosome structure and LTR-RTs are important factors for differentiation in Cinnamomum. Further comparison of genome sequence demon-strated few genomic sequence differences between two chemotypes of C. burmannii. However, the pathway and transcriptomic profiling analysis revealed the expression differences of the genes in MEP pathway, a main pathway responsible for D-Borneol synthesis, which may be the critical determinant for the D-Borneol production differences between the two chemotypes. Our results also implied epigenetic modulation may participate in this process. Finally, a genome database (CAMD) of Cinnamomum species was constructed for better resources exploration. The present study provided the first high-quality genome and comprehensive genomic resources of C. burmannii. which not only provided new insights into the evolution of Cinnamomum species, but also shed light on the mechanisms of D-Borneol biosynthesis and the molecular signatures characterized high and low D-Borneol chemotypes of C. burmannii.

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