Dataset Information

Complete chloroplast genome sequence of Bougainvillea Spectabilis (Nyctaginaceae).

ABSTRACT: Bougainvillea spectabilis is an important ornamental plant in tropical and subtropical regions, whose complex and diverse germplasm has brought great difficulties to variety selection and identification. Here, to provide data support for the identification of the relationship between cultivars of B. spectabilis, we sequenced the chloroplast genome of B. spectabilis. The chloroplast genome is 154,520?bp in length, including a large single-copy (LSC) region of 88,101?bp and small single-copy (SSC) region of 17,729?bp, and a pair of invert repeats (IR) regions of 24,171?bp. The chloroplast genome contains 129 genes, including 83 protein-coding genes, 37 tRNA genes, and 8 rRNA genes. The phylogenetic analysis based on 14 chloroplast genome demonstrated a close relationship between B. spectabilis and other plant species in Caryophyllales. The chloroplast genome will help for further of taxonomy research and provide data support for the identification of genetic relationship among different cultivars of B. spectabilis.

SUBMITTER: Wang N

PROVIDER: S-EPMC7707718 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature

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Complete chloroplast genome sequence of Bougainvillea Spectabilis (Nyctaginaceae).

Wang Ning N Qiu Meng-Yuan MY Yang Yi Y Li Jun-Wei JW Zou Xiao-Xing XX

Mitochondrial DNA. Part B, Resources 20191112 2

Bougainvillea spectabilis is an important ornamental plant in tropical and subtropical regions, whose complex and diverse germplasm has brought great difficulties to variety selection and identification. Here, to provide data support for the identification of the relationship between cultivars of B. spectabilis, we sequenced the chloroplast genome of B. spectabilis. The chloroplast genome is 154,520 bp in length, including a large single-copy (LSC) region of 88,101 bp and sm ...[more]

PMID: 33366293

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Project description:Bougainvillea (Nyctaginaceae) is a popular ornamental plant group primarily grown for its striking colorful bracts. However, despite its established horticultural value, limited genomic resources and molecular studies have been reported for this genus. Thus, to address this existing gap, complete chloroplast genomes of four species (Bougainvillea glabra, Bougainvillea peruviana, Bougainvilleapachyphylla, Bougainvillea praecox) and one Bougainvillea cultivar were sequenced and characterized. The Bougainvillea cp genomes range from 153,966 bp to 154,541 bp in length, comprising a large single-copy region (85,159 bp-85,708 bp) and a small single-copy region (18,014 bp-18,078 bp) separated by a pair of inverted repeats (25,377-25,427 bp). All sequenced plastomes have 131 annotated genes, including 86 protein-coding, eight rRNA, and 37 tRNA genes. These five newly sequenced Bougainvillea cp genomes were compared to the Bougainvillea spectabilis cp genome deposited in GeBank. The results showed that all cp genomes have highly similar structures, contents, and organization. They all exhibit quadripartite structures and all have the same numbers of genes and introns. Codon usage, RNA editing sites, and repeat analyses also revealed highly similar results for the six cp genomes. The amino acid leucine has the highest proportion and almost all favored synonymous codons have either an A or U ending. Likewise, out of the 42 predicted RNA sites, most conversions were from serine (S) to leucine (L). The majority of the simple sequence repeats detected were A/T mononucleotides, making the cp genomes A/T-rich. The contractions and expansions of the IR boundaries were very minimal as well, hence contributing very little to the differences in genome size. In addition, sequence variation analyses showed that Bougainvillea cp genomes share nearly identical genomic profiles though several potential barcodes, such as ycf1, ndhF, and rpoA were identified. Higher variation was observed in both B. peruviana and B.pachyphylla cp sequences based on SNPs and indels analysis. Phylogenetic reconstructions further showed that these two species appear to be the basal taxa of Bougainvillea. The rarely cultivated and wild species of Bougainvillea (B.pachyphylla, B. peruviana, B. praecox) diverged earlier than the commonly cultivated species and cultivar (B. spectabilis, B. glabra, B. cv.). Overall, the results of this study provide additional genetic resources that can aid in further phylogenetic and evolutionary studies in Bougainvillea. Moreover, genetic information from this study is potentially useful in identifying Bougainvillea species and cultivars, which is essential for both taxonomic and plant breeding studies.

Dataset Information

Complete chloroplast genome sequence of Bougainvillea Spectabilis (Nyctaginaceae).

Publications

Complete chloroplast genome sequence of <i>Bougainvillea Spectabilis</i> (Nyctaginaceae).

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