Comparative Analysis of Six Lagerstroemia Complete Chloroplast Genomes

Crape myrtles are economically important ornamental trees of the genus . (Lythraceae), with a distribution from tropical to northern temperate zones. They are positioned phylogenetically to a large subclade of rosids (in the eudicots) which contain more than 25% of all the angiosperms. They commonly...

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Published inFrontiers in plant science Vol. 8; p. 15
Main Authors Xu, Chao, Dong, Wenpan, Li, Wenqing, Lu, Yizeng, Xie, Xiaoman, Jin, Xiaobai, Shi, Jipu, He, Kaihong, Suo, Zhili
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 19.01.2017
Subjects
Plant Science
simple repeat sequence
plastid marker
Lagerstroemia
phylogeny
sequence divergence
chloroplast genome
comparative genomics
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Summary:Crape myrtles are economically important ornamental trees of the genus . (Lythraceae), with a distribution from tropical to northern temperate zones. They are positioned phylogenetically to a large subclade of rosids (in the eudicots) which contain more than 25% of all the angiosperms. They commonly bloom from summer till fall and are of significant value in city landscape and environmental protection. Morphological traits are shared inter-specifically among plants of to certain extent and are also influenced by environmental conditions and different developmental stages. Thus, classification of plants in at species and cultivar levels is still a challenging task. Chloroplast (cp) genome sequences have been proven to be an informative and valuable source of cp DNA markers for genetic diversity evaluation. In this study, the complete cp genomes of three species were newly sequenced, and three other published cp genome sequences of were retrieved for comparative analyses in order to obtain an upgraded understanding of the application value of genetic information from the cp genomes. The six cp genomes ranged from 152,049 bp ( ) to 152,526 bp ( ) in length. We analyzed nucleotide substitutions, insertions/deletions, and simple sequence repeats in the cp genomes, and discovered 12 relatively highly variable regions that will potentially provide plastid markers for further taxonomic, phylogenetic, and population genetics studies in . The phylogenetic relationships of the taxa inferred from the datasets from the cp genomes obtained high support, indicating that cp genome data may be useful in resolving relationships in this genus.
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This article was submitted to Evolutionary and Population Genetics, a section of the journal Frontiers in Plant Science
Reviewed by: Gaurav Sharma, University of California, Davis, USA; Jing Wang, Beijing Forestry University, China
These authors have contributed equally to this work.
Edited by: Rongling Wu, Pennsylvania State University, USA
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2017.00015