Dataset Information

The complete chloroplast genome of Bletilla ochracea Schltr., a medicinal plant with yellow flowers.

ABSTRACT: Bletilla ochracea Schltr. (Orchidaceae) is a traditional medicinal plant widely distributed in the south-central part of China. The complete chloroplast genome of B. ochracea was sequenced using the Illumina HiSeq X Ten platform. The chloroplast genome was 160,018 bp in length, which contained two short inverted repeat (IRa and IRb) regions of 26,295 bp and was separated by a large single copy (LSC) region of 88,270 bp and a small single copy (SSC) region of 19,158 bp. The GC content of the whole chloroplast genome was 37.2%. The chloroplast DNA of B. ochracea consisted of 114 distinct genes, including 80 protein-coding genes, 4 ribosomal RNA genes, and 30 transfer RNA genes. The phylogenetic tree showed that B. ochracea was sister to B. formosana. Meanwhile, the monophyletic clade formed by all species of genus Bletilla was closely related to genus Thunia.

SUBMITTER: Zhao D

PROVIDER: S-EPMC9225769 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature

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The complete chloroplast genome of Bletilla ochracea Schltr., a medicinal plant with yellow flowers.

Zhao Dan D Liu Zhishang Z Zhou Tao T Wu Zhikun Z Zhang Yongping Y Xiao Chenghong C

Mitochondrial DNA. Part B, Resources 20220610 6

Bletilla ochracea Schltr. (Orchidaceae) is a traditional medicinal plant widely distributed in the south-central part of China. The complete chloroplast genome of B. ochracea was sequenced using the Illumina HiSeq X Ten platform. The chloroplast genome was 160,018 bp in length, which contained two short inverted repeat (IRa and IRb) regions of 26,295 bp and was separated by a large single copy (LSC) region of 88,270 bp and a small single copy (SSC) region of 19,158 bp. The GC conte ...[more]

PMID: 35756447

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Project description:Sophora tonkinensis belongs to genus Sophora of the Fabaceae family. It is mainly distributed in the ridge and peak regions of limestone areas in western China and has high medicinal value and important ecological functions. Wild populations of S. tonkinensis are in danger and need urgent conservation. Furthermore, wild S. tonkinensis resources are very limited relative to the needs of the market, and many adulterants are present on the market. Therefore, a method for authenticating S. tonkinensis and its adulterants at the molecular level is needed. Chloroplast genomes are valuable sources of genetic markers for phylogenetic analyses, genetic diversity evaluation, and plant molecular identification. In this study, we report the complete chloroplast genome of S. tonkinensis. The circular complete chloroplast genome was 154,644 bp in length, containing an 85,810 bp long single-copy (LSC) region, an 18,321 bp short single-copy (SSC) region and two inverted repeat (IR) regions of 50,513 bp. The S. tonkinensis chloroplast genome comprised 129 genes, including 83 protein-coding genes, 38 transfer RNA (tRNA) genes, and 8 ribosomal RNA (rRNA) genes. The structure, gene order and guanine and cytosine (GC) content of the S. tonkinensis chloroplast genome were similar to those of the Sophora alopecuroides and Sophora flavescens chloroplast genomes. A total of 1,760 simple sequence repeats (SSRs) were identified in the chloroplast genome of S. tonkinensis, and most of them (93.1%) were mononucleotides. Moreover, the identified SSRs were mainly distributed in the LSC region, accounting for 60% of the total number of SSRs, while 316 (18%) and 383 (22%) were located in the SSC and IR regions, respectively. Only one complete copy of the rpl2 gene was present at the LSC/IRB boundary, while another copy was absent from the IRA region because of the incomplete structure caused by IR region expansion and contraction. The phylogenetic analysis placed S. tonkinensis in Papilionoideae, sister to S. flavescens, and the genera Sophora and Ammopiptanthus were closely related. The complete genome sequencing and chloroplast genome comparative analysis of S. tonkinensis and its closely related species presented in this paper will help formulate effective conservation and management strategies as well as molecular identification approaches for this important medicinal plant.

Dataset Information

The complete chloroplast genome of Bletilla ochracea Schltr., a medicinal plant with yellow flowers.

Publications

The complete chloroplast genome of <i>Bletilla ochracea</i> Schltr., a medicinal plant with yellow flowers.

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