Gartner Ulrike, Hein Ingo, Brown Lynn H, Chen Xinwei, Mantelin Sophie, Sharma Sanjeev K, Dandurand Louise-Marie, Kuhl Joseph C, Jones John T, Bryan Glenn J, Blok Vivian C
Cell and Molecular Sciences, The James Hutton Institute, Dundee, United Kingdom.
School of Biology, University of St Andrews, St Andrews, United Kingdom.
Front Plant Sci. 2021 Mar 25;12:661194. doi: 10.3389/fpls.2021.661194. eCollection 2021.
Potato cyst nematodes (PCN) are economically important pests with a worldwide distribution in all temperate regions where potatoes are grown. Because above ground symptoms are non-specific, and detection of cysts in the soil is determined by the intensity of sampling, infestations are frequently spread before they are recognised. PCN cysts are resilient and persistent; their cargo of eggs can remain viable for over two decades, and thus once introduced PCN are very difficult to eradicate. Various control methods have been proposed, with resistant varieties being a key environmentally friendly and effective component of an integrated management programme. Wild and landrace relatives of cultivated potato have provided a source of PCN resistance genes that have been used in breeding programmes with varying levels of success. Producing a PCN resistant variety requires concerted effort over many years before it reaches what can be the biggest hurdle-commercial acceptance. Recent advances in potato genomics have provided tools to rapidly map resistance genes and to develop molecular markers to aid selection during breeding. This review will focus on the translation of these opportunities into durably PCN resistant varieties.
马铃薯胞囊线虫（PCN）是具有重要经济意义的害虫，在全球所有种植马铃薯的温带地区均有分布。由于地上症状不具特异性，且土壤中胞囊的检测取决于采样强度，侵染往往在被识别之前就已传播开来。PCN胞囊具有弹性且持久；其携带的卵可存活二十多年，因此一旦引入，PCN就很难根除。人们提出了各种防治方法，其中抗性品种是综合管理计划中关键的环境友好且有效的组成部分。栽培马铃薯的野生和地方品种亲缘种提供了PCN抗性基因的来源，这些基因已被用于育种计划，取得了不同程度的成功。培育一个抗PCN的品种需要多年的共同努力，才能跨越可能是最大障碍的商业认可这一关。马铃薯基因组学的最新进展提供了工具，可快速定位抗性基因并开发分子标记，以辅助育种过程中的选择。本综述将重点关注如何将这些机遇转化为持久抗PCN的品种。
