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The Complete Plastid Genomes of Seven Sargassaceae Species and Their Phylogenetic Analysis.

ABSTRACT: Sargassum is one of the most important genera of the family Sargassaceae in brown algae and is used to produce carrageenan, mannitol, iodine, and other economic substances. Here, seven complete plastid genomes of Sargassum ilicifolium var. conduplicatum, S. graminifolium, S. phyllocystum, S. muticum, S. feldmannii, S. mcclurei, and S. henslowianum were assembled using next-generation sequencing. The sizes of the seven circular genomes ranged from 124,258 to 124,563 bp, with two inverted regions and the same set of plastid genes, including 139 protein-coding genes (PCGs), 28 transfer (t)RNAs, and 6 ribosomal (r)RNAs. Compared with the other five available plastid genomes of Fucales, 136 PCGs were conserved, with two common ones shared with Coccophora langsdorfii, and one with S. fusiforme and S. horneri. The co-linear analysis identified two inversions of trnC(gca) and trnN(gtt) in ten Sargassum species, against S. horneri and C. langsdorfii. The phylogenetic analysis based on the plastid genomes of 55 brown algae (Phaeophyceae) showed four clades, whose ancient ancestor lived around 201.42 million years ago (Mya), and the internal evolutionary branches in Fucales started to be formed 92.52 Mya, while Sargassum species were divided into two subclades 14.33 Mya. Our novel plastid genomes provided evidence for the speciation of brown algae and plastid genomic evolution events.

SUBMITTER: Li R

PROVIDER: S-EPMC8602799 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature

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The Complete Plastid Genomes of Seven Sargassaceae Species and Their Phylogenetic Analysis.

Li Ruoran R Jia Xuli X Zhang Jing J Jia Shangang S Liu Tao T Qu Jiangyong J Wang Xumin X

Frontiers in plant science 20211105

Sargassum is one of the most important genera of the family Sargassaceae in brown algae and is used to produce carrageenan, mannitol, iodine, and other economic substances. Here, seven complete plastid genomes of <i>Sargassum ilicifolium var. conduplicatum, S. graminifolium, S. phyllocystum, S. muticum, S. feldmannii, S. mcclurei</i>, and <i>S. henslowianum</i> were assembled using next-generation sequencing. The sizes of the seven circular genomes ranged from 124,258 to 124,563 bp, with two inv ...[more]

PMID: 34804089

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Dataset Information

The Complete Plastid Genomes of Seven Sargassaceae Species and Their Phylogenetic Analysis.

Publications

The Complete Plastid Genomes of Seven Sargassaceae Species and Their Phylogenetic Analysis.

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