The complete mitochondrial genomes of two brown algae (Laminariales, Phaeophyceae) and phylogenetic analysis within Laminaria

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• 作者：Jing Zhang (1) (2)
  Xumin Wang (3)
  Cui Liu (1)
  Yuemei Jin (1)
  Tao Liu (1)
  
• 关键词：Laminaria ; Saccharina ; Phaeophyta ; Mitochondrial DNA ; Genome analysis ; Phylogenetic relationship
• 刊名：Journal of Applied Phycology
• 出版年：2013
• 出版时间：August 2013
• 年：2013
• 卷：25
• 期：4
• 页码：1247-1253
• 全文大小：335KB
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• 作者单位：Jing Zhang (1) (2)
  Xumin Wang (3)
  Cui Liu (1)
  Yuemei Jin (1)
  Tao Liu (1)
  
  1. Ocean University of China, 5 Yushan Road, Qingdao, Shandong Province, People’s Republic of China
  2. Shandong Provincial Key Laboratory of Microbial Engineering, Shandong Polytechnic University, Jinan, People’s Republic of China
  3. Beijing Institute of Genomics, Chinese Academy of Science, 7 Beitucheng Road, Beijing, People’s Republic of China
  

文摘

Two complete mitochondrial genome sequences for Laminaria longissima (=Saccharina longissima) and Laminaria hyperborea are reported in this study. They had circular mapping organization with slight difference in size (37,628 and 37,976?bp, respectively) and contained almost the same set of mitochondrial genes, including the genes for three rRNAs (23S, 16S, and 5S), 25 tRNAs, 35 known mitochondrial proteins, and three to four Open Reading Frame genes (ORFs). Both mitochondrial genomes exhibited typical gene content and organization of Laminaria mtDNAs except for the existence of ORF157 genes being located between rRNA large subunit gene 5 (rpl5) and ORF129-139 in L. hyperborea as found in that of Laminaria digitata. The phylogenetic analysis based on mitochondrial genomes supported the hypothesis of the split of the genus Laminaria, and the result of this study provided important information on the molecular evolution of Laminaria.