Dataset Information

Complete chloroplast genome sequences of two Alloteropsis species (Poaceae) from China.

ABSTRACT: Alloteropsis is a widely-distributed genus with C₃ and C₄ photosynthetic species belonging to the Poaceae family. This study characterized the complete chloroplast genomes of two Alloteropsis species from Chinese mainland, i.e. Alloteropsis semialata with C₄ photosynthetic type and Alloteropsis cimicina with C₃ photosynthetic type. The chloroplast genomes of A. semialata and A. cimicina are 138,188 bp and 139,335 bp in length, with 38.48% and 38.59% GC contents, respectively. These two chloroplast genomes contain the same number of genes, i.e. 107 unique genes including 27 tRNA, 4 rRNA, and 76 protein-coding genes. Phylogenomic analysis confirmed the species identity of A. semialata and A. cimicina and supported a close relationship of Alloteropsis with species of Setaria and Panicum in grass family.

SUBMITTER: Yang Y

PROVIDER: S-EPMC7872562 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature

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Complete chloroplast genome sequences of two Alloteropsis species (Poaceae) from China.

Yang Yang Y Zhang Xianzhi X Chen Siyun S Guo Zhenhua Z Wang Li L

Mitochondrial DNA. Part B, Resources 20210208 2

Alloteropsis is a widely-distributed genus with C3 and C4 photosynthetic species belonging to the Poaceae family. This study characterized the complete chloroplast genomes of two Alloteropsis species from Chinese mainland, i.e. Alloteropsis semialata with C4 photosynthetic type and Alloteropsis cimicina with C3 photosynthetic type. The chloroplast genomes of A. semialata and A. cimicina are 138,188 bp and 139,3 ...[more]

PMID: 33659679

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Project description:Genomic events including gene loss, duplication, pseudogenization and rearrangement in plant genomes are valuable sources for exploring and understanding the process of evolution in angiosperms. The family Melanthiaceae is distributed in temperate regions of the Northern Hemisphere and divided into five tribes (Heloniadeae, Chionographideae, Xerophylleae, Melanthieae and Parideae) based on the molecular phylogenetic analyses. At present, complete chloroplast genomes of the Melanthiaceae have been reported from three species. In the previous genomic study of Liliales, atrnI-CAU gene duplication event was reported fromParis verticillata, a member of Parideae. To clarify the significant genomic events of the tribe Parideae, we analysed the complete chloroplast genome sequences of twoTrilliumspecies representing two subgenera:TrilliumandPhyllantherum InTrillium tschonoskii(subgenusTrillium), the circular double-stranded cpDNA sequence of 156 852 bp consists of two inverted repeat (IR) regions of 26 501 bp each, a large single-copy (LSC) region of 83 981 bp and a small single-copy (SSC) region of 19 869 bp. The chloroplast genome sequence ofT. maculatum(subgenusPhyllantherum) is 157 359 bp in length, consisting of two IRs (25 535 bp), one SSC (19 949 bp) and one LSC (86 340 bp), and is longer than that ofT. tschonoskii The results showed that the cpDNAs of Parideae are highly conserved across genome structure, gene order and contents. However, the chloroplast genome ofT. maculatumcontained a 3.4-kb inverted sequence betweenndhCandrbcLin the LSC region, and it was a unique feature for subgeneraPhyllantherum In addition, we found three different types of gene duplication in the intergenic spacer betweenrpl23andycf2containingtrnI-CAU, which were in agreement with the circumscription of subgenera and sections in Parideae excludingT. govanianum These genomic features provide informative molecular markers for identifying the infrageneric taxa ofTrilliumand improve our understanding of the evolution patterns of Parideae in Melanthiaceae.

Dataset Information

Complete chloroplast genome sequences of two Alloteropsis species (Poaceae) from China.

Publications

Complete chloroplast genome sequences of two <i>Alloteropsis</i> species (Poaceae) from China.

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