The Complete Plastid Genome of Lagerstroemia fauriei and Loss of rpl2 Intron from Lagerstroemia (Lythraceae).
The Complete Plastid Genome of Lagerstroemia fauriei and Loss of rpl2 Intron from Lagerstroemia (Lythraceae).
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DOI：
10.1371/journal.pone.0150752
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发表时间：
2016
期刊：
影响因子：
3.7
通讯作者：
Wu Z
中科院分区：
文献类型：
--
作者：
Gu C;Tembrock LR;Johnson NG;Simmons MP;Wu Z
紫薇属（Lagerstroemia）是世界温带地区重要的观赏植物。因此，已经开发了许多混合动力车。然而，紫薇属的DNA序列资源和基因组信息是有限的，阻碍了种间关系的进化推论。报道了福氏紫薇质体基因组的全序列。据我们所知，这是千屈菜科中首次报道的完整质体基因组。该基因组长度为152，440 bp，GC含量为38%，由两个单拷贝区域组成，由一对25，793 bp的反向重复序列隔开。大单拷贝和小单拷贝区域分别跨越83，921 bp和16，933 bp。基因组包含129个基因，其中17个位于每个反向重复序列中。对天竺葵科、桃金娘科和柳叶菜科的系统发育分析证实千屈菜科和柳叶菜科是姐妹关系。L. Fauriei和几种其它千屈菜科物种缺乏rp12内含子，这表明在千屈菜科谱系内该内含子的早期丢失。L. fauriei为紫薇属和千屈菜科的系统发育研究提供了急需的遗传资源。高度可变的标记被鉴定用于系统发育、条形码和保护遗传学应用。
Lagerstroemia (crape myrtle) is an important plant genus used in ornamental horticulture in temperate regions worldwide. As such, numerous hybrids have been developed. However, DNA sequence resources and genome information for Lagerstroemia are limited, hindering evolutionary inferences regarding interspecific relationships. We report the complete plastid genome of Lagerstroemia fauriei. To our knowledge, this is the first reported whole plastid genome within Lythraceae. This genome is 152,440 bp in length with 38% GC content and consists of two single-copy regions separated by a pair of 25,793 bp inverted repeats. The large single copy and the small single copy regions span 83,921 bp and 16,933 bp, respectively. The genome contains 129 genes, including 17 located in each inverted repeat. Phylogenetic analysis of genera sampled from Geraniaceae, Myrtaceae, and Onagraceae corroborated the sister relationship between Lythraceae and Onagraceae. The plastid genomes of L. fauriei and several other Lythraceae species lack the rpl2 intron, which indicating an early loss of this intron within the Lythraceae lineage. The plastid genome of L. fauriei provides a much needed genetic resource for further phylogenetic research in Lagerstroemia and Lythraceae. Highly variable markers were identified for application in phylogenetic, barcoding and conservation genetic applications.