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首页> 外文期刊>Plant Disease >Verticillium Wilt Caused by Verticillium dahliae and V. nonalfalfae in Potato in Northern China
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Verticillium Wilt Caused by Verticillium dahliae and V. nonalfalfae in Potato in Northern China

机译：北方马铃薯的Verticillium dahliae和V. nonalfalfae引起的verticillium枯萎病

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摘要

Potato (Solanum tuberosum L.) is one of the most important staple foods in many parts of the world including China. In recent years, Verticillium wilt has become a severe threat to potato production in China. During 2015 to 2016, 287 samples of symptomatic potato plants were collected from 15 counties in five provinces from northern China. One hundred and eighty-seven Verticillium-like colonies were isolated from these samples and identified to species based on cultural and morphological characteristics, and multigene phylogeny based on the partial sequences of actin (ACT), elongation factor 1-alpha (EF1 alpha), glyceraldehyde-3-phosphate dehydrogenase (GPD), and tryptophan synthase (TS) genes. A consensus-rooted most parsimonious phylogenetic tree was generated from the data. One hundred and fifteen isolates comprising 61.5% of the total were identified as Verticillium dahliae, and the remaining 38.5% of the isolates were identified as V. nonalfalfae. V. dahliae was widely distributed in Shaanxi (84.1%), Inner Mongolia (76.7%), Gansu (12.8%), and Qinghai (100%, representing a single isolate). V. dahliae was not recovered from the samples in Ningxia. V. nonalfalfae dominated the collections from Gansu (87.2%) and Ningxia (100%) but was also recovered from Shaanxi (15.9%) and Inner Mongolia (23.3%) at lower frequencies. Neither V. albo-atrum nor V. alfalfae was recovered from the sampled areas. The V. nonalfalfae isolates were predominantly isolated from the samples collected from altitudes above 1,800 m, and in contrast, V. dahliae isolates were mainly recovered from fields sampled below 1,800 m. The optimum temperature for the colony growth of V. nonalfalfae was lower (20 degrees C) than that for V. dahliae (25 degrees C). Pathogenicity tests demonstrated that V. dahliae and V. nonalfalfae were both pathogens of potato Verticillium wilt, with V. dahliae isolates exhibiting higher virulence than V. nonalfalfae isolates regardless of the collection area of the species. This is the first documentation of V. nonalfalfae infecting S. tuberosum in China and the higher altitudes associated with infections of V. nonalfalfae anywhere in the world.
机译：土豆（Solanum Tuberosum L.）是世界上许多地区最重要的主食之一，包括中国。近年来，弗里霉威尔特对中国土豆生产造成严重威胁。 2015年至2016年，从北方五个省份的15个县收集了287个症状马铃薯植物样本。从这些样品中分离了一百八十七颗状菌落，并基于文化和形态学特征鉴定到物种，以及基于肌动蛋白（ACT）的部分序列，伸长因子1-α（EF1α）的多烯系统，甘油醛-3-磷酸脱氢酶（GPD）和色氨酸合成酶（TS）基因。从数据中产生了一种生根的大多数令人瘫痪的系统发育树。将总量的61.5％的十五分离物鉴定为verticillium dahliae，其余38.5％的分离株被鉴定为V. nonalfalfae。 V. Dahliae广泛分布于陕西（84.1％），内蒙古（76.7％），甘肃（12.8％）和青海（100％，代表单孤立）。 V. Dahliae未从宁夏的样品中恢复过来。 V. Nonalfalfae主导来自甘肃（87.2％）和宁夏（100％）的收藏，但也从陕西（15.9％）和内蒙古（23.3％）以较低频率恢复。从采样区域中回收V. Albo-acrum和V.Alfalfae都没有。 V. nonalfalfae分离物主要与从1,800米的高度收集的样品中分离出来，相反，V.Ahiae分离株主要从低于1,800米的田地中回收。 V. nonalfalfae的菌落生长的最佳温度低（20℃），比V.Ahliae（25℃）。致病性测试证明V.Dahliae和V.Nonalfalfae是马铃薯黄藻枯萎病的病原体，V. Dahliae分离物与V. nonalfalfae分离的毒力较高，无论物种的收集区域如何。这是中国的第一个关于中国劳斯科病的第一个文献，以及与世界任何地方的V. nonalfalfae感染的高度高度。

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  • 来源
    《Plant Disease》 |2018年第10期|共7页
  • 作者

    Jing Rui; Li Haiyuan; Hu Xiaoping; Shang Wenjing; Shen Ruiqing; Guo Chengjin; Guo Qingyun; Subbarao Krishna V;

  • 作者单位

    Northwest A&

    F Univ Coll Plant Protect State Key Lab Crop Stress Biol Arid Areas Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Coll Plant Protect State Key Lab Crop Stress Biol Arid Areas Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Coll Plant Protect State Key Lab Crop Stress Biol Arid Areas Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Coll Plant Protect State Key Lab Crop Stress Biol Arid Areas Yangling 712100 Shaanxi Peoples R China;

    Ningxia Agr &

    Forestry Acad Plant Protect Inst Yinchuan 750002 Ningxia Peoples R China;

    Ningxia Agr &

    Forestry Acad Plant Protect Inst Yinchuan 750002 Ningxia Peoples R China;

    Qinghai Univ Acad Agr &

    Forestry Sci Key Lab Agr Integrated Pest Management Qinghai Pr Xining 810016 Qinghai Peoples R China;

    Univ Calif Davis Dept Plant Pathol Salinas CA 93905 USA;

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  • 正文语种 eng
  • 中图分类 植物保护;
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