Suppression of Meloidogyne incognita by the endophytic fungus Acremonium implicatum from tomato root galls

文献类型： 外文期刊

第一作者： Tian, Xueliang

作者： Tian, Xueliang;Tian, Xueliang;Yao, Yurong;Chen, Guohua;Mao, Zhenchuan;Xie, Bingyan;Wang, Xiaotian

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关键词： biocontrol;Meloidogyne incognita;tomato;endophytic fungus;Acremonium implicatum

期刊名称：INTERNATIONAL JOURNAL OF PEST MANAGEMENT （ 影响因子：1.907； 五年影响因子：1.849 ）

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收录情况： SCI

摘要： Specific endophytes with biocontrol potential might occur in diseased plant tissues. We isolated an endophytic fungus from tomato root galls infected with Meloidogyne incognita and identified it as Acremonium implicatum based on morphology and internal transcribed spacer sequences. Its biocontrol potential was tested in vitro and in pot and field experiments. In the in vitro test, 96.0% of second-stage juveniles of M. incognita were killed by a culture filtrate of A. implicatum after 48h. The fungus also suppressed egg hatching, with only 36.3% of treated eggs hatching compared with 87.3% of control eggs. Pot experiments showed that A. implicatum inhibited the formation of root galls, with 40.6 galls per treated plant compared with 121.6 on control plants. A. implicatum reduced the nematode population in soil, with 151.1 nematodes per 100g treated soil and 375.1 in control soil. Field experiments demonstrated that the root gall index of treated plants (25) was markedly lower than that of control plants (96). In conclusion, A. implicatum has excellent potential for the biocontrol of M. incognita.

分类号： S4

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