Heil Martin, Baldwin Ian T
Centre d'Ecologie Fonctionelle et Evolutive (CEFE-CNRS, UPR 9056), 1919 Route de Mende, F-34293 Montpellier Cedex 5, France.
Trends Plant Sci. 2002 Feb;7(2):61-7. doi: 10.1016/s1360-1385(01)02186-0.
Fitness costs can explain the evolution and maintenance of induced resistance in plants. However, the methods currently used to gather evidence for such costs do not allow decreases in fitness to be cleanly attributed to individual traits responsible for induced resistance, because the studies are plagued by multiple confounding responses. Reproductive performance provides an overview of physiological performance and is thus a useful currency to understand the function of induced responses. Integrated molecular, physiological and ecological studies are needed to identify the mechanisms responsible for the decrease in fitness and to evaluate fully the usefulness of the cost paradigm.
适合度代价可以解释植物诱导抗性的进化与维持。然而，目前用于收集此类代价证据的方法，无法将适合度的降低明确归因于诱导抗性所涉及的个体性状，因为这些研究受到多种混杂反应的困扰。繁殖表现提供了生理表现的概况，因此是理解诱导反应功能的有用衡量标准。需要综合分子、生理和生态学研究来确定导致适合度降低的机制，并全面评估代价范式的实用性。
