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  11. The Complete Chloroplast Genome Sequences Of Three Pedicularis Species (orobanchaceae)

The complete chloroplast genome sequences of three Pedicularis species (Orobanchaceae)

Mingcheng Wang1,2, Shuqiao Zhang3, Lei Zhang4,5

  • 1Chengdu University, Institute for Advanced Study, Chengdu, China.

Genetics and Molecular Biology
|October 2, 2024

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View abstract on PubMed

Summary
This summary is machine-generated.

This study sequenced chloroplast genomes of three Pedicularis plants, revealing their genetic makeup and evolutionary relationships. These findings provide crucial genomic resources for future research on this hemiparasitic plant genus.

Area of Science:

  • Botany
  • Genomics
  • Evolutionary Biology

Background:

  • Pedicularis L. is a genus of hemiparasitic plants native to southwestern China.
  • The phylogenetic relationships and evolutionary history of the Pedicularis genus remain incompletely understood.

Purpose of the Study:

  • To sequence and assemble the complete chloroplast genomes of three Pedicularis species.
  • To analyze the genomic structure, repeat content, and codon usage of these plastomes.
  • To infer the phylogenetic positions of these species within the Pedicularis genus.

Main Methods:

  • High-throughput Illumina sequencing was employed to obtain chloroplast genome data.
  • Bioinformatic analyses were performed to assemble the plastomes, identify genes and pseudogenes, and analyze repeat structures.

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  • Maximum likelihood analysis was utilized for phylogenetic reconstruction.

    • Main Results:

    • Chloroplast genomes of Pedicularis chinensis, P. melampyriflora, and P. striata were successfully sequenced and assembled, ranging from 142,059 bp to 152,146 bp.
    • The plastomes contained 110-117 genes, with 13-15 pseudogenes identified, nine of which were conserved across the three species.
    • Similar codon usage patterns and abundant simple sequence repeats and long repeats were observed, with minor interspecific variations.

    Conclusions:

    • The sequenced chloroplast genomes provide valuable genomic resources for the Pedicularis genus.
    • This study contributes to resolving the phylogenetic relationships and evolutionary history of Pedicularis.
    • The findings facilitate future genetic and genomic investigations into this important plant group.