Dataset Information

Characterization of the complete chloroplast genome sequence of Cecropia pachystachya.

ABSTRACT: The complete chloroplast genome of Cecropia pachystachya Trécul was determined in this study. The total genome size was 153,925?bp in length, containing a pair of inverted repeats (IRs) of 25,443?bp, which were separated by large single copy (LSC) and small single copy (SSC) of 84,947?bp and 18,092?bp, respectively. The GC contents is 36.5%. A total of 112 unique genes were annotated, including 30 tRNA, four rRNA, and 78 protein-coding genes. This is the first report of a cp genome for the formerly recognised family Cecropiaceae, and it confirmed that Cecropia pachystachya belongs within Urticaceae.

SUBMITTER: Wu ZY

PROVIDER: S-EPMC7800727 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature

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Characterization of the complete chloroplast genome sequence of <i>Cecropia pachystachya</i>.

Wu Zeng-Yuan ZY Du Xin-Yu XY Milne Richard I RI Liu Jie J Li De-Zhu DZ

Mitochondrial DNA. Part B, Resources 20171017 2

The complete chloroplast genome of <i>Cecropia pachystachya</i> Trécul was determined in this study. The total genome size was 153,925 bp in length, containing a pair of inverted repeats (IRs) of 25,443 bp, which were separated by large single copy (LSC) and small single copy (SSC) of 84,947 bp and 18,092 bp, respectively. The GC contents is 36.5%. A total of 112 unique genes were annotated, including 30 tRNA, four rRNA, and 78 protein-coding genes. This is the first report of a cp genome for th ...[more]

PMID: 33473963

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Project description:Erigeron breviscapus is a famous medicinal plant. However, the limited chloroplast genome information of E. breviscapus, especially for the chloroplast DNA sequence resources, has hindered the study of E. breviscapus chloroplast genome transformation. Here, the complete chloroplast (cp) genome of E. breviscapus was reported. This genome was 152,164bp in length, included 37.2% GC content and was structurally arranged into two 24,699bp inverted repeats (IRs) and two single-copy areas. The sizes of the large single-copy region and the small single-copy region were 84,657 and 18,109bp, respectively. The E. breviscapus cp genome consisted of 127 coding genes, including 83 protein coding genes, 36 transfer RNA (tRNA) genes, and eight ribosomal RNA (rRNA) genes. For those genes, 95 genes were single copy genes and 16 genes were duplicated in two inverted regions with seven tRNAs, four rRNAs, and five protein coding genes. Then, genomic DNA of E. breviscapus was used as a template, and the endogenous 5' and 3' flanking sequences of the trnI gene and trnA gene were selected as homologous recombinant fragments in vector construction and cloned through PCR. The endogenous 5' flanking sequences of the psbA gene and rrn16S gene, the endogenous 3' flanking sequences of the psbA gene, rbcL gene, and rps16 gene and one sequence element from the psbN-psbH chloroplast operon were cloned, and certain chloroplast regulatory elements were identified. Two homologous recombination fragments and all of these elements were constructed into the cloning vector pBluescript SK (+) to yield a series of chloroplast expression vectors, which harbored the reporter gene EGFP and the selectable marker aadA gene. After identification, the chloroplast expression vectors were transformed into Escherichia coli and the function of predicted regulatory elements was confirmed by a spectinomycin resistance test and fluorescence intensity measurement. The results indicated that aadA gene and EGFP gene were efficiently expressed under the regulation of predicted regulatory elements and the chloroplast expression vector had been successfully constructed, thereby providing a solid foundation for establishing subsequent E. breviscapus chloroplast transformation system and genetic improvement of E. breviscapus.

Dataset Information

Characterization of the complete chloroplast genome sequence of Cecropia pachystachya.

Publications

Characterization of the complete chloroplast genome sequence of <i>Cecropia pachystachya</i>.

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