Yi Dong-Keun, Kim Ki-Joong
School of Life Sciences, Korea University, Seoul, Korea.
Mitochondrial DNA B Resour. 2016 Aug 21;1(1):571-573. doi: 10.1080/23802359.2016.1192509.
The nucleotide sequences of the two chloroplast (cp) genomes from and are the first to be completed in genus of family Lamiaceae. The structure of two cp genomes shows similar characteristic to the typical cp genome of angiosperms. The lengths of two cp genomes are 151,825bp and 152,707 bp, respectively. Two cp genomes are divided into LSC region (83,012 bp and 83,791 bp) and SSC region (17,524 bp and 17,568 bp) by two IR regions (25,644 bp and 25,674 bp). Both of two cp genomes contain 114 genes (80 protein-coding genes, 30 tRNA genes and 4 rRNA genes), 10 protein-coding genes and 7 tRNA genes duplicated in the IR regions. Similar to the typical cp genome of angiosperms, 18 of the genes in the cp genome have one or two introns. The overall A-T contents of two genomes are 61.8% which is also similar to general angiosperms. The A-T content in the non-coding (64.4%) is higher than in the coding (59.9%) regions. Sixty-seven and seventy-three simple sequence repeat (SSR) loci were identified in the and cp genomes, respectively. In phylogenetic analysis, genus shows closed relationship with of Scutellarioideae.
唇形科某属的两个叶绿体（cp）基因组的核苷酸序列是该科中首次完成测序的。这两个cp基因组的结构显示出与被子植物典型cp基因组相似的特征。两个cp基因组的长度分别为151,825bp和152,707bp。两个cp基因组被两个反向重复（IR）区域（25,644bp和25,674bp）分为大单拷贝（LSC）区域（83,012bp和83,791bp）和小单拷贝（SSC）区域（17,524bp和17,568bp）。两个cp基因组均包含114个基因（80个蛋白质编码基因、30个tRNA基因和4个rRNA基因），其中10个蛋白质编码基因和7个tRNA基因在IR区域中重复。与被子植物的典型cp基因组相似，该cp基因组中有18个基因含有一个或两个内含子。两个基因组的总体A-T含量为61.8%，这也与一般被子植物相似。非编码区（64.4%）的A-T含量高于编码区（59.9%）。在该cp基因组和另一cp基因组中分别鉴定出67个和73个简单序列重复（SSR）位点。在系统发育分析中，该属与黄芩亚科的某属显示出密切的关系。
