Strategies to manage plant disease-from use of resistant varieties to crop rotation, elimination of reservoirs, landscape planning, surveillance, quarantine, risk modeling, and anticipation of disease emergences-all rely on knowledge of pathogen host range. However, awareness of the multitude of factors that influence the outcome of plant-microorganism interactions, the spatial and temporal dynamics of these factors, and the diversity of any given pathogen makes it increasingly challenging to define simple, all-purpose rules to circumscribe the host range of a pathogen. For bacteria, fungi, oomycetes, and viruses, we illustrate that host range is often an overlapping continuum-more so than the separation of discrete pathotypes-and that host jumps are common. By setting the mechanisms of plant-pathogen interactions into the scales of contemporary land use and Earth history, we propose a framework to assess the frontiers of host range for practical applications and research on pathogen evolution.

中文翻译：

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重新审视植物病原体寄主范围的概念。

从植物抗病品种的使用到作物轮作，消除水库，进行景观规划，监视，隔离，风险建模以及预测疾病的发生等所有植物病害的控制策略都依赖于病原体寄主范围的知识。然而，对影响植物-微生物相互作用的结果的众多因素，这些因素的时空动态以及任何给定病原体的多样性的认识使定义简单，通用的规则来限制宿主变得越来越具有挑战性。病原体的范围。对于细菌，真菌，卵菌和病毒，我们说明宿主范围通常是重叠的连续体，比离散病原体的分离更重要，并且宿主跳跃是常见的。