云南民族大学学报（自然科学版）2026，Vol.35Issue(2)：169-181,13.DOI:10.3969/j.issn.1672-8513.2026.02.003
药用植物雀舌木属叶绿体基因组的比较研究
Comparative analysis of the chloroplast genome of the medicinal plant Leptopus Decne.
摘要
Abstract
To clarify the characteristics of Leptopus Decne.sequences,codon usage patterns,influencing factors,and phylogeny,we perform a comparative analysis of the chloroplast genomes of Leptopus chinensis and L.cordifolius with medicinal value.The whole genome of L.chinensis chloroplasts is sequenced,assembled,and annotated by second-generation high-throughput sequencing technology,and further analyzes its genome structure,repeat sequences,codon usage preference,and phylogeny.The chloroplast genome of Leptopus exhibited a typical double-stranded circular tetrad.The IR region reflects high conservatism,and there are more mutation sites in the LSC and SSC regions,while the LSC region contains more SSRs.Codon usage analysis indicated a non-neutral,with a preference for using A/U at the third codon position.The phylogenetic tree constructed based on the whole genome of chloroplasts revealed a close phylogenetic relationship with 100％suppor.In conclusion,selection pressure has a great influence on the codon preference of the chloroplast genome of Leptopus,and thess results can provide genetic data support for futher studies on the metabolism and utilization of natural components of Leptopus.关键词
雀舌木属/叶绿体基因组/重复序列/密码子偏好性/系统发育Key words
Leptopus/chloroplast genome/sequence repeat/codon preference/phylogeny分类
生物科学引用本文复制引用
宋雨茹,余潇,赵振宁..药用植物雀舌木属叶绿体基因组的比较研究[J].云南民族大学学报（自然科学版）,2026,35(2):169-181,13.基金项目
云南省第二次国家重点保护野生植物资源调查项目(09930-216304) （09930-216304）
2021年云南省大学生创新创业国家级项目(202110677046) （202110677046）
湖南财政经济学院博士科研启动资金共同资助. （）
