Genome survey sequencing for the characterization of genetic background of Dracaena cambodiana and its defense response during dragon's blood formation

文献类型： 外文期刊

第一作者： Ding, Xupo

作者： Ding, Xupo;Mei, Wenli;Huang, Shengzhuo;Wang, Hui;Zhu, Jiahong;Hu, Wei;Ding, Zehong;Tie, Weiwei;Peng, Shiqing;Dai, Haofu;Ding, Xupo;Mei, Wenli;Huang, Shengzhuo;Wang, Hui;Dai, Haofu

作者机构：

期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）

ISSN： 1932-6203

年卷期： 2018 年 13 卷 12 期

页码：

收录情况： SCI

摘要： Dragon's blood collected from the genus Dracaena is used as a renowned traditional medicine in various cultures worldwide. However, the genetics of the genus Dracaena and the formation mechanism of dragon's blood remain poorly understood. Here, we generate the first draft genome reference assembly of an elite Chinese Dracaena species, Dracaena cambodiana, from next-generation sequencing data with 89.46x coverage. The reads were assembled into 2,640,704 contigs with an N50 length of 1.87 kb, and a 1.05 Gb assembly was finally assembled with 2,379,659 scaffolds. Furthermore, 97.75% of the 267,243 simple sequence repeats identified from these scaffolds were mononucleotide, dinucleotide, and trinucleotide repeats. Among all 53,700 predicted genes, 158 genes involved in cell wall and plant hormone synthesis and reactive oxygen species scavenging showed altered regulation during the formation of dragon's blood. This study provides a genomic characterization of D. cambodiana and improves understanding of the molecular mechanism of dragon's blood formation. This report represents the first genome-wide characterization of a Dracaena species in the Asparagaceae.

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