生物多样性 ›› 2002, Vol. 10 ›› Issue (1): 29-37.doi: 10.17520/biods.2002005

• 论文 • 上一篇    下一篇

银叶老鹳草(Geranium sylvaticum)种群中诱导保护抗性和病原菌相互作用的研究

刘登义, Lars Ericson   

  1. 1 (安徽师范大学生物多样性研究中心,芜湖 241000)
    2 (Department of Ecology and Environmental Science , Ume¤University , S2901 87 Ume¤, Sweden)
  • 收稿日期:2001-03-20 修回日期:2001-12-12 出版日期:2002-02-20
  • 通讯作者: 刘登义

Studies on induced protective resistance in Geranium sylvaticum populations and interactions between pathogenic fungi

LIU DengYi, Lars Ericson   

  1. 1 Biodiversity Research Center , Anhui Normal University , Wuhu 241000
    2 Department of Ecology and Environmental Science , Ume¤University , S2901 87 Ume¤, Sweden
  • Received:2001-03-20 Revised:2001-12-12 Online:2002-02-20
  • Contact: LIU DengYi

本文通过自然植物种群接种实验、人工接种实验和野外调查研究了(Geranium sylvaticum)对老鹳草单孢锈菌(Uromyces geranii)(长生活史)的抗病性在受柄锈菌(Puccinia)(短生活史)感病前后和受2种柄锈菌(P. leveilleiP.morthieri)感病后有无区别,以及在同一季节里感染同一寄主植物的长生活史单孢锈菌和短生活史柄锈菌间的相互作用。病原菌间的相互作用使寄主植物产生诱导保护抗性。结果表明,P. leveillei 可诱导寄主植物产生短时间的保护抗性,而 P. morthieri 可能诱导寄主植物产生长时期的保护抗性。诱导保护抗性可能是影响自然植物种群中植病式样的重要因素之一。

We studied, through field survey, field inoculation experiments and hand inoculation experiments, whether Geranium sylvaticum plants differed in resistance against a macrocyclic pathogenic rust, Uromyces geranii, when they were healthy or diseased by one of two microcyclic pathogenic rusts, Puccinia leveillei and P. morthieri, and whether the macrocyclic rust interacted with the two microcyclic rusts when they infected the same host plants at the same season. The results indicated that P. morthieri diseased plants were much more resistant to U. geranii than P. leveillei-diseased plants and healthy plants. Furthermore, P. leveillei-diseased plants were more resistant than healthy plants. The results suggest that P. leveillei induces a short-term resistance, while P. morthieri induces a long-term resistance. Induced protective resistance may be one important factor in explaining disease patterns in natural plant populations.

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