Characterization of the chloroplast genome of Chlorolobion braunii ITBB-AG6 isolated from a treatment pond of sanitary sewage
文献类型： 外文期刊
作者： Mu, Yaojia 1 ; Ma, Shuai 2 ; Tan, Deguan 2 ; Sun, Xuepiao 1 ; Zhang, Jiaming 2 ;
作者机构： 1.Hainan Univ, Coll Agr, Haikou, Peoples R China
2.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Hainan Bioenergy Ctr, Hainan Key Lab Microbiol Resources, Haikou, Peoples R China
3.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Xueyuan Rd 4, Haikou 571101, Peoples R China
关键词： Chlorolobion braunii; chloroplast genome; phylogenetic analysis; terminal inverted repeat; >
期刊名称：MITOCHONDRIAL DNA PART B-RESOURCES （ 影响因子：0.5； 五年影响因子：0.6 ）
ISSN：
年卷期： 2023 年 8 卷 7 期
页码：
收录情况： SCI
摘要： Sphaeropleales is an order of fast-growing microalgae with high oil content and high efficiency in sewage treatment, in which photosynthesis plays a critical role. We isolated a strain of Sphaeropleales, Chlorolobion braunii ITBB-AG6 from an azolla community in a sewage pond, and sequenced its chloroplast genome. The complete genome has a length of 154 kb with a GC content of 31.7%. A total of 89 genes were annotated, including 56 protein-coding genes, 30 tRNA genes, and three rRNA genes. Out of the protein coding genes, 64.3% are involved in photosynthesis, 28.6% are involved in protein synthesis, and 7.1% are involved in ATP synthesis. Transfer RNA genes for 20 amino acids were identified, in which tRNA genes for methionine, leucine, and arginine are tripled, whereas tRNA genes for glutamic acid, glycine, serine, and threonine are doubled. Terminal inverted repeats of 27.9 kb containing 10 genes related to photosynthesis and chloroplast division are present in the genome, suggesting that photosynthesis was strengthened in the evolutionary history. Phylogenetic analysis indicates that C. braunii ITBB-AG6 falls in the family Selenastraceae and is most closely related to Monoraphidium neglectum.
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