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    • Keywords


      plastid genome; phylogenetic relationship; repeat sequence; trnH gene; Elaeagnus mollis.

    • Abstract


      Plastomes, which are maternally inherited and show a moderate rate of evolution, play a critical role in phylogenetic reconstructionand assignment of plant species. However, little is known about the sequence divergence and molecular evolutionary patterns ofplastid genomes in Elaeagnus mollis, a plant of great economic, medicinal, edible and ecological values. The plastid genome of E. mollis is152,224-bp long and has 47 repeat sequences, including tandem (17), dispersed (12), and palindromic (18) types of repeat variations. Here,we reported six divergence hotspots (atpH-atpI, petN-psbM, trnT-psbD, trnP-psaJ, rpl32-trnL and ycf1) that could potentially be used asmolecular genetic markers for population genetics and phylogenetic studies of E. mollis. A comparison of plastid genomes in the orderRosales showed that the trnH gene was duplicated only in Elaeagnaceae; therefore, it is an important marker in Elaeagnaceae. Phylogeneticanalyses based on whole plastid genome sequences in 33 species revealed that Rosales is divided into two strongly supported clades andthat the families Elaeagnaceae and Barbeyaceae are closely related.

    • Author Affiliations



      1. College of Forestry, Northwest A&F University, Yangling 712100, People’s Republic of China
      2. School of Biological Science and Technology, Baotou Teachers’ College, Baotou 014030, People’s Republic of China
      3. College of Life Science, Northwest A&F University, Yangling 712100, People’s Republic of China
    • Dates

  • Journal of Genetics | News

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      Posted on July 25, 2019

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