Dataset Information

The complete chloroplast genome of Myriophyllum spicatum reveals a 4-kb inversion and new insights regarding plastome evolution in Haloragaceae.

ABSTRACT: Myriophyllum, among the most species-rich genera of aquatic angiosperms with ca. 68 species, is an extensively distributed hydrophyte lineage in the cosmopolitan family Haloragaceae. The chloroplast (cp) genome is useful in the study of genetic evolution, phylogenetic analysis, and molecular dating of controversial taxa. Here, we sequenced and assembled the whole chloroplast genome of Myriophyllum spicatum L. and compared it to other species in the order Saxifragales. The complete chloroplast genome sequence of M. spicatum is 158,858 bp long and displays a quadripartite structure with two inverted repeats (IR) separating the large single copy (LSC) region from the small single copy (SSC) region. Based on sequence identification and the phylogenetic analysis, a 4-kb phylogenetically informative inversion between trnE-trnC in Myriophyllum was determined, and we have placed this inversion on a lineage specific to Myriophyllum and its close relatives. The divergence time estimation suggested that the trnE-trnC inversion possibly occurred between the upper Cretaceous (72.54 MYA) and middle Eocene (47.28 MYA) before the divergence of Myriophyllum from its most recent common ancestor. The unique 4-kb inversion might be caused by an occurrence of nonrandom recombination associated with climate changes around the K-Pg boundary, making it interesting for future evolutionary investigations.

SUBMITTER: Liao YY

PROVIDER: S-EPMC7083656 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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The complete chloroplast genome of Myriophyllum spicatum reveals a 4-kb inversion and new insights regarding plastome evolution in Haloragaceae.

Liao Yi-Ying YY Liu Yu Y Liu Xing X Lü Tian-Feng TF Mbichi Ruth Wambui RW Wan Tao T Liu Fan F

Ecology and evolution 20200304 6

Myriophyllum, among the most species-rich genera of aquatic angiosperms with ca. 68 species, is an extensively distributed hydrophyte lineage in the cosmopolitan family Haloragaceae. The chloroplast (cp) genome is useful in the study of genetic evolution, phylogenetic analysis, and molecular dating of controversial taxa. Here, we sequenced and assembled the whole chloroplast genome of Myriophyllum spicatum L. and compared it to other species in the order Saxifragales. The complete ...[more]

PMID: 32211179

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Dataset Information

The complete chloroplast genome of Myriophyllum spicatum reveals a 4-kb inversion and new insights regarding plastome evolution in Haloragaceae.

Publications

The complete chloroplast genome of <i>Myriophyllum spicatum</i> reveals a 4-kb inversion and new insights regarding plastome evolution in Haloragaceae.

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