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The complete chloroplast genome of Lycoris aurea (L'Her.) Herb.

ABSTRACT: Lycoris aurea (L'Hér.) Herb is a herb widely growing in Chinese southen region, such as Guangxi, Guangdong, Fujian , Yunnan and Sichuan provinces. It not only has medicinal value, but also can be used as ornamental garden plant. The circular chloroplast genome of L. aurea was 158,690 bp in size, consisting of a pair of inverted repeat (IR) regions (26,782 bp) separated by a large single-copy (LSC) region (85,467 bp) and a small single-copy (SSC) region (18,541 bp) regions. And, it contained 127 genes, including 38 tRNA genes, 8 rRNA genes and 81 mRNA genes. The overall GC content of L. aurea is 37.73%. Phylogenetic analysis strongly supported that L. aurea and its congeneric species, L. radiata and L. squamigera, as sister group with 100% bootstrap value.

SUBMITTER: Peng Y

PROVIDER: S-EPMC7748574 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature

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The complete chloroplast genome of Lycoris aurea (L'Hér.) Herb.

Peng Ye Y Wei Jing J Yang Limei L

Mitochondrial DNA. Part B, Resources 20200124 1

Lycoris aurea (L'Hér.) Herb is a herb widely growing in Chinese southen region, such as Guangxi, Guangdong, Fujian , Yunnan and Sichuan provinces. It not only has medicinal value, but also can be used as ornamental garden plant. The circular chloroplast genome of L. aurea was 158,690 bp in size, consisting of a pair of inverted repeat (IR) regions (26,782 bp) separated by a large single-copy (LSC) region (85,467 bp) and a small single-copy (SSC) region (18,541 bp) regions. And, it ...[more]

PMID: 33366751

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Project description:Polyploidy has received considerable interest in the past, but aneuploidy and partial rearrangements may also influence genomic divergence. In this study, we reported a comprehensive cytogeographic, morphological and genetic analysis of Lycoris aurea complex throughout its range and attempted to explore the association between aneuploidy and species diversification. The karyotypes of this complex presented aneuploidy variations mainly divided into four cytotypes: I (2n = 10m + 2T), II (2n = 8m + 6T), III (2n = 7m + 8T), and IV (2n = 6m + 10T). Cytotype distributions were highly structured geographically. Two main cytotypes, II and IV, are geographically allopatric. The populations with cytotype II are mainly distributed in central China and the southern islands of Japan. Cytotypes IV is disjunctly distributed in southwestern and southeastern China. The cytotypes with fewer chromosome numbers tend to occur at high latitudes. For analyzing the phylogeographic pattern and genetic structure of this complex, we sequenced four chloroplast DNA fragments (4,748 bp in total) of 241 individuals from 42 populations. Extremely high diversity of cpDNA haplotypes was found, with genetic diversity index (H d) being 0.932 and 98.61% of the genetic variation occurring among populations, indicating that this complex has undergone strong intraspecific differentiation. The cytotype II had the highest haplotype diversity (H d = 0.885), while cytotype IV harbored the highest nucleotide diversity (π = 4.09 × 10-3). We detected significant leaf morphological differences not only between cytotype II and IV but also between west lineage and east lineage within cytotype IV. These results illustrated that aneuploidy contributed to extensive morphological and genetic differentiation in L. aurea complex. It was suggested that L. aurea complex should comprise multiple independent evolutionary lineages, and accurate species delimitation needs to be established further in an integrative taxonomic approach.

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The complete chloroplast genome of Lycoris aurea (L'Her.) Herb.

Publications

The complete chloroplast genome of <i>Lycoris aurea</i> (L'Hér.) Herb.

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