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首页> 外文期刊>European journal of nutrition >Genome size estimations in Chrysanthemum and correlations with molecular phylogenies
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Genome size estimations in Chrysanthemum and correlations with molecular phylogenies

机译：菊花的基因组大小估计和与分子系统发育的相关性

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摘要

A wide range of ploidy variation exists among native Chinese Chrysanthemum germplasm. This study examined the evolution of genome size, Cx value, and chromosome number in Chinese Chrysanthemum within a phylogenetic context. The genome size of 15 species belonging to Chrysanthemum and three related genera was determined using flow cytometry. Nuclear ribosomal ITS and chloroplast trnL-F intergenic spacer sequence were used to construct molecular phylogenetic trees. Genome size values among the 15 species divide into three discrete groups, which positively correlate with three ploidy levels. We found significantly and negatively correlated 1Cx values to ploidy levels in all 15 species and a genome downsizing after polyploidization effect in Chrysanthemum. Two major phylogenetic clade, the C. indicum group and the C. zawadskii + Ajania group, possess significant differences in genome size and 1Cx values. The genome size and 1Cx values in the C. indicum group were significantly lower than in the C. zawadskii group, even though both have same ploidy level, and significant latitude and morphology correlations can be inferred. Diploid Chrysanthemum species similar in 1Cx values to C. indicum (Mt.Tianzhu) and C. indicum (Fujian) indicate that some populations of tetraploid C. indicum originated by autoploidy. We deduced that C. chanetii is a relatively young species, C. vestitum relative ancient and that the divergence between Chrysanthemum and Ajania may have been relatively recent, presumably the same divergence as created C. zawadskii.
机译：天然中国菊花种质中存在广泛的倍率变异。该研究检测了在系统发育背景下的中文菊花中基因组大小，CX值和染色体数的演变。使用流式细胞术测定属于菊花和三种相关的15种物种的基因组大小。核核糖体其和叶绿体TRNL-F代际间隔序列用于构建分子系统发育树。 15种不同的基因组大小将分为三个离散群体，与三个倍增倍率水平正相关。在菊花在菊花中，我们发现在所有15种物种中的倍率水平和基因组化缩小后，我们发现了显着且带来了负面相关的1CX值。两个主要的系统发育人物，C. indigum组和C.Zawadskii + Ajania组具有显着差异，具有显着差异和1CX值。 C. indigum组的基因组大小和1cx值显着低于C. Zawadskii组，即使两个都具有相同的倍率水平，并且可以推断出显着的纬度和形态相关性。二倍体菊花物种在1cx值中类似的物种C. Indicum（Mt.tianzhu）和C.Ingem（福建）表明一些四倍体C.的群体源于自动血量量。我们推导出C. Chanetii是一种相对年轻的物种，C。Vestitum相对古老，菊花和Ajania之间的分歧可能相对较近，可能与所创建的Zawadskii相同。

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  • 来源
    《European journal of nutrition》 |2017年第5期|共13页
  • 作者

    Luo Chang; Chen Dongliang; Cheng Xi; Zhao Huien; Huang Conglin;

  • 作者单位

    Beijing Acad Agr &

    Forestry Sci Beijing Agrobiotechnol Res Ctr Beijing Municipal Key Lab Agrogene Resource &

    Bio Beijing 100097 Peoples R China;

    Beijing Acad Agr &

    Forestry Sci Beijing Agrobiotechnol Res Ctr Beijing Municipal Key Lab Agrogene Resource &

    Bio Beijing 100097 Peoples R China;

    Beijing Acad Agr &

    Forestry Sci Beijing Agrobiotechnol Res Ctr Beijing Municipal Key Lab Agrogene Resource &

    Bio Beijing 100097 Peoples R China;

    Beijing Forestry Univ Dept Ornamental Hort Coll Landscape Architecture Beijing 100083 Peoples R China;

    Beijing Acad Agr &

    Forestry Sci Beijing Agrobiotechnol Res Ctr Beijing Municipal Key Lab Agrogene Resource &

    Bio Beijing 100097 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 营养卫生、食品卫生;
  • 关键词

    Ajania; China Chrysanthemum; Flow cytometry; Genome size; Phylogeny;

    机译：Ajania;中国菊花;流式细胞术;基因组大小;系统发生;

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