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草业学报 ›› 2009, Vol. 18 ›› Issue (1): 118-124.

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甘肃中部地区禾谷镰孢的变异研究

李金花1,2, 纪莉景3, 柴兆祥2*, Knight T E4, Burgess L W4   

  1. 1.甘肃省作物遗传改良与种质创新重点实验室,甘肃兰州730070;
    2.甘肃农业大学草业学院植物病理学系,甘肃兰州730070;
    3.河北农林科学院植保所,河北保定071001;
    4.澳大利亚悉尼大学农业、食品和自然资源学院镰刀菌研究实验室,悉尼2006
  • 收稿日期:2007-12-06 出版日期:2009-01-25 发布日期:2009-02-20
  • 作者简介:李金花(1972-),女,甘肃秦安人,副教授。 E-mail: ljh@gsau.edu.cn
  • 基金资助:
    澳大利亚ATSE/Crawford 基金,甘肃省科技厅(甘科计[2001]21号)和甘肃省教育厅项目(032208)资助。

A study on the variance of Fusarium graminearum sampled from central Gansu

LI Jin-hua1,2, JI Li-jing3, CHAI Zhao-xiang2, Knight T E4, Burgess L W4   

  1. 1.Gansu Key Laboratory of Crop Improvement and Germplasm Enhancement, Lanzhou 730070, China;
    2.Department of Plant Pathology, College of Grassland Science, Gansu Agricultural University, Lanzhou 730070, China;
    3.Institute of Plant Protection, Hebei Academy of Agricultural and
    Forestry Science, Baoding 071001, China;
    4.Fusarium Research Laboratory, Faculty of
    Agriculture, Food and Natural Resources, University of Sydney,
    NSW, Sydney 2006, Australia
  • Received:2007-12-06 Online:2009-01-25 Published:2009-02-20

摘要: 为掌握禾谷镰孢在甘肃中部地区的分布及变异情况,从根部表现有坏死和叶鞘发褐的小麦幼苗的不同部位、小麦地土壤及玉米籽粒、玉米茎秆上分离禾谷镰孢,并以形态学为基础,参照Nelson分类系统进行鉴定。结果表明,在分离到的43个镰刀菌菌株中,有14个菌株经鉴定为禾谷镰孢,均从玉米茎秆上分离到,小麦根部、小麦叶鞘、小麦地土壤、玉米籽粒中分离到的镰刀菌中未见禾谷镰孢。将禾谷镰孢在特定条件下培养后,发现14个禾谷镰孢菌株产生子囊壳的数量不同,为2~90个。在以Fg16为引物的PCR反应中,随机选取的11个禾谷镰孢菌株都产生0.41kb的PCR产物,而6个对照菌株都产生0.50kb的片段,证明引物Fg16可以区分禾谷镰孢菌株群体的遗传多态性。以Tri13为引物的PCR反应显示,11个禾谷镰孢菌株以及3个中国对照菌株都产生脱氧雪腐镰刀菌烯醇(DON)毒素,而3个澳大利亚对照菌株产生雪腐镰刀菌烯醇(NIV)毒素。

Abstract: The occurrence of Fusarium graminearum on Triticum aestivum and Zea mays, in the middle areas of Gansu Province, China was assessed by isolation of Fusarium species from T. aestivum roots with brown rot symptoms, from T. aestivum sheaths, T. aestivum soil, Z. mays kernels, and Z. mays stalks. Fusarium isolates were identified by morphology according to Nelson’s system. Fourteen of 43 Fusarium isolates were F. graminearum. It was isolated only from corn stalks. These 14 isolates produced between 2 and 90 perithecia each. PCR using the Fg16 primer set resulted in a product of 0.41 kb from all 14 isolates and of 0.50 kb from the 6 reference isolates. It successfully differentiated between the F. graminearum isolates. PCR reactions using the Tri13 primer showed that all 14 isolates and the three Chinese reference cultures produced DON while the three Australian reference isolates produced fragments of 415 bp showing that they produced NIV.

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