Mitochondrial genomes of the green macroalga Ulva pertusa (Ulvophyceae, Chlorophyta): novel insights into the evolution of mitogenomes in the Ulvophyceae
文献类型： 外文期刊
作者： Liu, Feng 1 ; Melton, James T., III 3 ; Bi, Yuping 4 ;
作者机构： 1.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, Peoples R China
3.Univ Alabama, Dept Biol Sci, Tuscaloosa, AL 35487 USA
4.Shandong Acad Agr Sci, Biotechnol Res Ctr, Jinan, Shandong, Peoples R China
关键词： Chlorophyta;Green algae;Intron;Mitochondrial genome;Ulva pertusa;Ulvophyceae
期刊名称：JOURNAL OF PHYCOLOGY （ 影响因子：2.923； 五年影响因子：3.091 ）
ISSN： 0022-3646
年卷期： 2017 年 53 卷 5 期
页码：
收录情况： SCI
摘要： To further understand the trends in the evolution of mitochondrial genomes (mitogenomes or mtDNAs) in the Ulvophyceae, the mitogenomes of two separate thalli of Ulva pertusa were sequenced. Two U.pertusa mitogenomes (Up1 and Up2) were 69,333bp and 64,602bp in length. These mitogenomes shared two ribosomal RNAs (rRNAs), 28 transfer RNAs (tRNAs), 29 protein-coding genes, and 12 open reading frames. The 4.7kb difference in size was attributed to variation in intron content and tandem repeat regions. A total of six introns were present in the smaller U.pertusa mtDNA (Up2), while the larger mtDNA (Up1) had eight. The larger mtDNA had two additional group II introns in two genes (cox1 and cox2) and tandem duplication mutations in noncoding regions. Our results showed the first case of intraspecific variation in chlorophytan mitogenomes and provided further genomic data for the undersampled Ulvophyceae.
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