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The complete chloroplast genome sequence of Phalaenopsis wilsoniii (Orchidaceae).

ABSTRACT: In the present study, we reported and characterized the complete chloroplast genome of a moth orchid, Phalaenopsis wilsonii, which is endemic to South China. Its plastid genome size is 145,373 bp, consisting of a large single copy (LSC) region (84,996 bp), a small single-copy region (10,668 bp), and two inverted repeats (IRs) regions (24,855 bp). A total of 122 plastid genes were annotated, comprising 76 protein-coding genes, 38 tRNA genes, and 8 rRNA genes. The phylogenetic tree further revealed that P. wilsonii showed a sister relationship with P. lowii within subgenus Parishianae.

SUBMITTER: Xia K

PROVIDER: S-EPMC8555540 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature

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The complete chloroplast genome sequence of <i>Phalaenopsis wilsoniii</i> (Orchidaceae).

Xia Keke K Liu Ding-Kun DK Wang Jie-Yu JY

Mitochondrial DNA. Part B, Resources 20211027 11

In the present study, we reported and characterized the complete chloroplast genome of a moth orchid, <i>Phalaenopsis wilsonii</i>, which is endemic to South China. Its plastid genome size is 145,373 bp, consisting of a large single copy (LSC) region (84,996 bp), a small single-copy region (10,668 bp), and two inverted repeats (IRs) regions (24,855 bp). A total of 122 plastid genes were annotated, comprising 76 protein-coding genes, 38 tRNA genes, and 8 rRNA genes. The phylogenetic tree further ...[more]

PMID: 34722880

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Project description:BackgroundThe taxonomy and infrageneric delimitation of Phalaenopsis Blume has been significantly disputed due to some overlapping morphological features between species related, which needed further evidence for clarification. The structural characterization of complete chloroplast genomes of P. storbatiana and P. wilsonii were analyzed and compared with those of related taxa to provide a better understanding of their genomic information on taxonomy and phylogeny.ResultsIt was shown that chloroplast genomes of Phalaenopsis storbatiana and P. wilsonii had a typical quadripartite structure with conserved genome arrangements and moderate divergence. The chloroplast genomes of P. storbatiana and P. wilsonii were 145,885 bp and 145,445 bp in length, respectively, and shared a similar GC content of 36.8%. Gene annotations of two species revealed 109 single-copy genes consistently. In addition, 20 genes duplicated in the inverted regions, 16 genes each possessed one or more introns, and five ndh (NA (D)H dehydrogenase) genes were observed in both. Comparative analysis of the total cp genomes of P. storbatiana and P. wilsonii with those of other six related Phalaenopsis species confirmed the stable sequence identity for coding and non-coding regions and higher sequence variation in SC regions than IR regions. Most of their protein-coding genes had a high degree of codon preference. Moreover, 45 genes were discovered with significantly positive selection. However, different amplifications in IR regions were observed in these eight species. Phylogenetic analysis based on CDS from 60 species representing main clades in Orchidaceae indicated that Phalaenopsis species including P. stobartiana and P. wilsonii formed a monophyletic clade with high bootstrap nested in tribe Vandeae of Epidendroideae, which was consistent with those from previous studies.ConclusionsThe results could provide insight into understanding the plastome evolution and phylogenetic relationships of Phalaenopsis.

Dataset Information

The complete chloroplast genome sequence of Phalaenopsis wilsoniii (Orchidaceae).

Publications

The complete chloroplast genome sequence of <i>Phalaenopsis wilsoniii</i> (Orchidaceae).

Similar Datasets

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