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首页> 外文期刊>Acta Horticulturae >Dogwood anthracnose: the story continues
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Dogwood anthracnose: the story continues

机译：山茱萸炭疽病：故事继续

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摘要

Dogwood anthracnose caused by Dlscula destructiva Redlin was first detected infecting two species of dogwood on the west and east coasts of the United States (USA) in the mid-1970s. Since then, it has spread to most regions where Cornus nuttallii Audubon ex Torn & A. Gray (pacific dogwood) grows on the west coast, and infected many C. florida L. (eastern flowering dogwood) trees in the northeast and along the Appalachian Mountains and adjacent highlands on the east coast. The disease has decimated populations of both species. A study in 1995 that used arbitrary DNA primers indicated that D. destructiva was most likely an introduced pathogen of unknown origin and had very little variability among isolates obtained from any location in the USA. Subsequent studies indicated that genetic differences existed among isolates from various regions and different years. Our current study of genetic diversity and population analyses were completed using simple sequence repeats (SSRs) to evaluate almost 100 isolates of the pathogen. Our preliminary evaluations imply that the fungus has little genetic diversity and can be categorized into several population groups. Our data supports the hypothesis that D. destructiva is an introduced pathogen.
机译：Dlscula Destructiva Redlin的Docwood炭疽病首次在20世纪70年代中期检测到美国（美国）的西部和东海岸的两种山茱萸中检测到。从那以后，它已经蔓延到大多数地区，玉米山果实奥巴蒙·雷德·灰色（太平洋山茱萸）在西海岸生长，并在东北和沿着阿巴拉契亚州感染了许多C.佛罗里达州L.（东部开花山茱萸）树木山脉和海岸的邻近的高地。该疾病具有两种物种的群集。 1995年使用任意DNA引物的研究表明，D. Dirtructiva最有可能引入未知起源的病原体，并且在美国的任何位置获得的分离物之间具有很小的变化。随后的研究表明，来自各个地区和不同年份的分离物中存在遗传差异。我们目前使用简单的序列重复（SSR）完成遗传多样性和人口分析的研究，以评估病原体的几个分离物。我们的初步评估意味着真菌具有很少的遗传多样性，可以分为几个人口群体。我们的数据支持D. Dirtureda是一个引入的病原体的假设。

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  • 来源
    《Acta Horticulturae》 |2018年第1191期|共5页
  • 作者

    R.N. Trigiano; D. Hadziabdic; K. Mantooth; M.T. Windham; B.H. Ownley; M.E. Staton; S. Miller; N. Zhang;

  • 作者单位

    Department of Entomology and Plant Pathology University of Tennessee Knoxville Tennessee USA;

    Department of Entomology and Plant Pathology University of Tennessee Knoxville Tennessee USA;

    Department of Entomology and Plant Pathology University of Tennessee Knoxville Tennessee USA;

    Department of Entomology and Plant Pathology University of Tennessee Knoxville Tennessee USA;

    Department of Entomology and Plant Pathology University of Tennessee Knoxville Tennessee USA;

    Department of Entomology and Plant Pathology University of Tennessee Knoxville Tennessee USA;

    Department of Plant Biology Rutgers University New Brunswick New Jersey USA;

    Department of Plant Biology Rutgers University New Brunswick New Jersey USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 园艺;
  • 关键词

    Cornus florida; Cornus kousa; Cornus nuttallii; Discuta destructiva; genetic diversity; population genetics;

    机译：Cornus佛罗里达山脉;Cornus Kouseda;Cornus Nuttallii;讨论性讨论;遗传遗传;Genetics Genetics;

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