Plants employ immunological and ecological strategies to resist biotic stress. Recent evidence suggests that plants adapt to biotic stress by changing their root exudation chemistry to assemble health-promoting microbiomes. This so-called 'cry-for-help' hypothesis provides a mechanistic explanation for previously characterized soil feedback responses to plant disease, such as the development of disease-suppressing soils upon successive cultivations of take all-infected wheat. Here, we divide the hypothesis into individual stages and evaluate the evidence for each component. We review how plant immune responses modify root exudation chemistry, as well as what impact this has on microbial activities, and the subsequent plant responses to these activities. Finally, we review the ecological relevance of the interaction, along with its translational potential for future crop protection strategies.

中文翻译：

---

寻求根系分泌物的帮助：受压植物组装促进健康的土壤微生物组的适应性机制。

植物采用免疫学和生态学策略来抵抗生物胁迫。最近的证据表明，植物通过改变根系分泌物化学来组装促进健康的微生物组来适应生物胁迫。这种所谓的“求救”假说为先前表征的土壤对植物病害的反馈反应提供了一种机械解释，例如在连续种植全感染小麦后形成抑制病害的土壤。在这里，我们将假设分为各个阶段并评估每个组成部分的证据。我们回顾了植物免疫反应如何改变根系分泌物化学，以及这对微生物活动的影响，以及随后植物对这些活动的反应。最后，我们回顾了相互作用的生态相关性，