Organellar Genomes of var. Provide Insight into the Characteristics of Phaeophyceae.

var. , a prevalent seaweed along the Chinese coast, has economic and ecological significance. However, systematic positions within and among the three orders of Phaeophyceae, Fucales, Ectocarpales, and Laminariales are in debate.

Gametophyte phase of commercial kelps, the potential food supplements for essential fatty acids and n-3 polyunsaturated fatty acids.

For heteromorphic algae with alternating generations, the thallus and gametophyte phases are different morphologies in free-living life history. The thalli are popular used as traditional vegetables and herbal drugs, whereas the gametophyte phases are little involved. To better understand the functional lipids in the gametophyte phase of three commercial kelps, Saccharina japonica, Undaria pinnatifida, and Costaria costata, the contents of total lipids (TLs), fatty acid (FA) profiles, and transcriptomic analysis were performed.

Floridean Starch and Floridoside Metabolic Pathways of and Their Regulatory Mechanism under Continuous Darkness.

Floridean starch and floridoside are the main storage carbohydrates of red algae. However, their complete metabolic pathways and the origin, function, and regulatory mechanism of their pathway genes have not been fully elucidated. In this study, we identified their metabolic pathway genes and analyzed the changes in related gene expression and metabolite content in under continuous dark conditions.

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

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 , and 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.

The complete mitochondrial genome and phylogenetic analysis of .

(Perestenko) Masuda 1982 is distributed in the coastal areas of Shandong and Liaoning in China, and also in Japan. In this study, the complete nucleotide sequence of the circular mitochondrial DNA of the red alga has been determined. The complete mitochondrial DNA sequence of was 25,318 bp in length with an overall GC content of 25.

The complete mitochondrial genome of brown algae: (Harvey) Setchell.

We describe the complete mitochondrial genome sequence of . This mitogenome is a circular molecule of 34,695 bp in length and had an overall GC content of 37.54%%.

The complete chloroplast genome of .

The complete chloroplast genome sequence of is presented here. Circular mapping revealed that the complete chloroplast DNA sequence of was 124,298 bp in length and had an overall AT content of 69.57%, including 137 protein-coding genes, 2 open reading frames, 28 transfer RNA genes, and 6 ribosomal RNA genes.

The complete plastid genome and phylogenetic analysis of .

, a nutrient-rich green algae that is both edible and medicinal, it is called a 'rat tail' because of its unique shape, it can reach up to a metre in length and has the functions of clearing heat and detoxifying, detumescence and water, and repelling insects. The plastid genome sequence of is 83,422 bp. A total of 105 genes were determined, including 77 protein-encoding genes, 3 rRNA genes, and 25 tRNA genes.

OGDA: a comprehensive organelle genome database for algae.

Algae are the oldest taxa on Earth, with an evolutionary relationship that spans prokaryotes (Cyanobacteria) and eukaryotes. A long evolutionary history has led to high algal diversity. Their organelle DNAs are characterized by uniparental inheritance and a compact genome structure compared with nuclear genomes; thus, they are efficient molecular tools for the analysis of gene structure, genome structure, organelle function and evolution.

The complete chloroplast genome of and its phylogenetic analysis.

Complete chloroplast genome of was obtained in this work. Circular mapping revealed that the complete chloroplast sequences of was 176,748 bp in length and had an overall GC content of 38.3%, encoded 132 genes which contained 86 protein-coding genes (PCGs), 38 transfer RNA genes (tRNA) and 8 ribosomal RNA genes (rRNA).

The complete chloroplast genome of and its phylogenetic analysis.

Complete chloroplast genome of was obtained in this work. Circular mapping revealed that the complete chloroplast DNA sequences of was 124,075 bp in length and had an overall AT content of 69.41%, including 139 protein-coding genes, 28 transfer RNA genes, and 6 ribosomal RNA genes.

The complete mitogenome of and its phylogenetic analysis.

is a marine nutrient-rich edible green algae, with its external shape similar to 'sea grape', it has functions of purifying blood, anti-oxidation, anti-cancer, and anti-tumor. The mitogenome sequence of is 209,894 bp long. A total of 67 genes were determined, including 17 protein-encoding genes, 3 rRNA genes, 27 tRNA genes, and 20 unidentified open reading frame (ORF).

The complete mitogenome of and its phylogenetic analysis.

, a marine red macroalgae, is a rich source of active substances and is listed as biological and health food material with high economic value. The mitogenome sequence of is 25,829 bp. A total of 50 genes were determined, including 24 protein-encoding genes, two rRNA genes, 23 tRNA genes, and one unidentified open reading frame (ORF).

The complete plastid genome and phylogenetic analysis of .

, a marine red macroalgae, is a rich source of sulfated polysaccharides, carbohydrate, vitamins, and minerals, and showed multiple bioactivities such as antibacterial, antitumour, and cholinesterase inhibitory activity. The plastid genome sequence of is 179,410 bp. A total of 235 genes were determined, including 201 protein-encoding genes, 30 tRNA genes, 3 rRNA genes, 1 ribonuclease gene, and 1 intron inserted into the gene.

The complete plastid genome and phylogenetic analysis of .

The complete plastid genome of , a marine red macroalga, was determined and analyzed. The plastid genome sequence of is 179,609 bp. It contains 237 genes, including 203 protein-encoding genes, 30 tRNA genes, 3 rRNA genes, 1 ribonuclease gene, and 1 intron inserted into the gene.

The complete plastid genome and phylogenetic analysis of .

is an economical species of marine red algae. The length of its plastid genome sequence is 179,082 bp; a total of 236 genes were determined, including 203 protein-encoding genes, 3 rRNA genes, 29 tRNA genes, 1 ribonuclease gene, and 1 intron inserted into the gene. The gene content and structure of Gracilariaceae species were relatively well conserved.