Testing and modelling the potential of three diploid plants in Poaceae as a new pathosystem to investigate the interactions between cereal hosts and cereal cyst nematode (Heterodera avenae)

文献类型： 外文期刊

第一作者： Wu, D. Q.

作者： Wu, D. Q.;Cui, J. K.;Huang, W. K.;Peng, H.;Peng, D. L.

作者机构：

关键词： Brachypodium distachyon;cereal crops;cereal cyst nematode;Heterodera avenae;model pathosystem;Triticum urartu

期刊名称：PLANT PATHOLOGY （ 影响因子：2.59； 五年影响因子：2.924 ）

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年卷期：

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收录情况： SCI

摘要： Cereal cyst nematode (CCN), Heterodera avenae, is one of the most important pathogens of wheat worldwide, and causes significant yield losses. Research on CCN-wheat interactions is hampered by the lack of an effective model pathosystem. This study investigated the potential of the model cereal Brachypodium distachyon (Bd21-3) and diploid wheat 2A (G1812) and 2D (AL8/78) as model hosts for CCN. Nematode infection analysis showed that although some CCN penetrated Bd21-3 roots, these nematodes failed to develop to the later developmental stages or form cysts, indicating B.distachyon is not a host for CCN. A strong burst of reactive oxygen species (ROS) within Bd21-3 roots infected with CCN was induced 3days after infection and the expression of seven ROS-producing genes was significantly increased. In contrast, CCN completed its life cycle in both diploid wheat 2A and 2D, and formed normal syncytia in these hosts. Although CCN developmental processes within both diploid wheat 2A and 2D were very similar to those in the susceptible control, the number of cysts formed on diploid wheat 2D was less than those formed on diploid wheat 2A and the susceptible control, indicating that diploid wheat 2A was a more suitable host for CCN than 2D. This is the first report of a potential new pathosystem for CCN-host interactions using diploid wheat.

分类号： S432.1

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