Mitochondrial genomes and phylogenomic analysis of Ulva lactuca Linnaeus (Ulvophyceae, Chlorophyta)
文献类型： 外文期刊
作者： Liu, Manman 1 ; Liu, Feng 2 ; Chen, Nansheng 2 ; Melton, James T., III 5 ; Luo, Minbo 1 ;
作者机构： 1.Shanghai Ocean Univ, Coll Marine Sci, Shanghai, Peoples R China
2.Chinese Acad Sci, CAS Key Lab Marine Ecol & Environm Sci KLMEES, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Shandong, Peoples R China
3.Pilot Natl Lab Marine Sci & Technol, Marine Ecol & Environm Sci Lab, Qingdao, Shandong, Peoples R China
4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Shandong, Peoples R China
5.Spelman Coll, Atlanta, GA 30314 USA
6.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Shanghai, Peoples R China
关键词： Mitochondrial genome; Ulvophyceae; Ulva lactuca; intron; mutation
期刊名称：MITOCHONDRIAL DNA PART B-RESOURCES （ 影响因子：0.658； 五年影响因子：0.674 ）
ISSN：
年卷期： 2020 年 5 卷 2 期
页码：
收录情况： SCI
摘要： Two mitogenomes of Ulva lactuca Linnaeus, one from Florida, USA and another nearly complete mtDNA from Chile, had previously been sequenced. Here, the complete mitogenome of U. lactuca from Shantou, China was sequenced and compared with them. The circular-mapping mitogenome of U. lactuca was 62,021 bp in size and 407 bases longer than that from the USA. The average sequence identity in gene sequence regions was 99.8% among these three U. lactuca mtDNAs. Differences in genome sizewere mainly caused by duplication mutations and insertion/deletion mutations of short DNA sequences. Two intergenic regions (nad6-trnS and trnF-trnG) contained long tandem repeats which displayed a high level of variation in repeat sequences and copy numbers, indicating fast mutation rates in these regions. The phylogenomic analysis revealed that these three samples of U. lactuca formed a strongly supported clade. The mitogenome can be used to understand the phylogeography and population genetics in Ulva on a global scale.
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