新疆农业科学 ›› 2024, Vol. 61 ›› Issue (3): 690-698.DOI: 10.6048/j.issn.1001-4330.2024.03.019

• 植物保护·微生物 • 上一篇    下一篇

紫花苜蓿炭疽病病原新记录种(Colletotrichum liriopes)的鉴定及生物学特性分析

柳丰1(), 祖丽皮耶·安外尔1, 李克梅1(), 托伦巴特·毕亚洪2   

  1. 1.新疆农业大学农学院/农业农村部西北荒漠绿洲农林外来入侵生物防控重点实验室(部省共建)/农林有害生物监测与安全防控重点实验室,乌鲁木齐 830052
    2.塔城地区塔城市二工镇农业(畜牧业)发展中心,新疆塔城 834300
  • 收稿日期:2023-08-03 出版日期:2024-03-20 发布日期:2024-04-19
  • 通信作者: 李克梅(1972-),女,江苏人,教授,博士,硕士生导师,研究方向为植物病理学,(E-mail)likemei@xjau.edu.cn
  • 作者简介:柳丰(1998-),女,新疆人,硕士研究生,研究方向为植物病理学,(E-mail)1968484375@qq.com
  • 基金资助:
    国家重点研发计划项目(2022YFD1401101)

Identification of new pathogens of alfalfa anthracnose (Colletotrichum liriopes) and preliminary study on biological characteristics

LIU Feng1(), Zulipiye Anwaier1, LI Kemei1(), Tuolunbate Biyahong2   

  1. 1. College of Agronomy,Xinjiang Agricultural University/Key Laboratory of Prevention and Control of Invasive Organisms in Agriculture and Forestry in Northwest Desert Oases,Ministry of Agriculture and Rural Affairs(co-constructed by Ministry and Province)/Key Laboratory of Monitoring and Safety Prevention and Control of Agricultural and Forestry Pests,Urumqi 830052,China
    2. Agriculture (animal husbandry) development center,Ergong town,Tacheng,Tacheng Xinjiang 834300,China
  • Received:2023-08-03 Online:2024-03-20 Published:2024-04-19
  • Correspondence author: LI Kemei(1972-), female,from Jiangsu,professor,research direction is plant pathology,(E-mail)likemei@xjau.edu.cn
  • Supported by:
    Nationaal Key R&D Program of China(2022YFD1401101)

摘要:

【目的】 从炭疽病症状的紫花苜蓿病株分离得到一种炭疽菌,与此前报道的三叶草炭疽菌(Colletotrichum trifolii)、北美炭疽菌(C.americae-borealis)形态上略有差异,研究该菌致病性、分类地位及其生物学特性并鉴定。【方法】 采用组织分离法获得炭疽菌菌株,经柯赫氏法则证明其致病性,并运用形态学观察结合多基因片段PCR扩增法鉴定病原菌种类,测定不同培养基、碳源、氮源、温度、pH值、光照对该菌菌落生长的影响。【结果】 从紫花苜蓿炭疽病病部分离获得一种新的致病炭疽菌,为麦冬炭疽菌(Colletotrichum liriopes)。该菌在5~35℃,pH值4~11的多数供试培养基、氮源、碳源条件下均能生长。【结论】 麦冬炭疽菌(C.liriopes)可侵染紫花苜蓿引起炭疽病,其菌落最适生长温度为28℃,最佳氮源、碳源分别是酵母和可溶性淀粉,最适pH为7,菌丝致死温度61℃,12 h光暗交替对菌落生长有利。

关键词: 苜蓿炭疽病; 麦冬炭疽菌; 鉴定; 生物学特性

Abstract:

【Objective】 This project aims to isolate an anthrax strain from alfalfa with the symptoms of anthracnose,which would be slightly different from the previously reported Colletotrichum trifolii and C.americae borealis in morphology in order to clarify the pathogenicity,taxonomic status and biological characteristics of this strain through a series of studies.【Methods】 Anthrax strain was obtained by tissue isolation,and its pathogenicity was proved by Koch's rule and morphological observation combined with PCR amplification of polygene fragments was used to identify the pathogenic bacteria.Meanwhile,the effects of different culture media,carbon source,nitrogen source,temperature,pH value and light on the colony growth of anthrax strain were determined.【Results】 A new pathogenic anthrax strain was isolated from alfalfa,and identified as Colletotrichum liriopes.The strain could grow under the conditions of 5-35℃ and pH 4-11,and most of the test medium,nitrogen source and carbon source conditions.【Conclusion】 C.liriopes can infect alfalfa and cause anthracnose.The optimum growth temperature of C.liriopes is 28℃,the optimum nitrogen source and carbon source are yeast and soluble starch respectively,the optimum pH is 7,the lethal temperature of mycelium is 61℃,and the alternation of light and dark for 12 h is favorable to the growth of the colony.

Key words: alfalfa anthracnose; C.liriopes; identification; biological characteristics

中图分类号: 


ISSN 1001-4330 CN 65-1097/S
邮发代号:58-18
国外代号:BM3342
主管:新疆农业科学院
主办:新疆农业科学院 新疆农业大学 新疆农学会

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