Purrington Colin B, Bergelson Joy
Am Nat. 1999 Jul;154(S1):S82-S91. doi: 10.1086/303285.
For some resistance traits identified in crop and weed species, plant physiologists have detailed knowledge of the mechanism of gene action that distinguishes the physiology of resistant and susceptible genotypes. Such information could be useful to those evolutionary biologists interested in coupling the genetics and physiology of resistance mutations with data on the relative fitness of resistant and susceptible genotypes. In previous work, we have shown that the lifetime seed production of chlorsulfuron-resistant Arabidopsis thaliana was substantially lower than that of susceptible plants, and here we explore potential physiological reasons for the fitness reduction. In addition, we highlight several methodological issues that are essential when using transgenic technology to explore fitness trade-offs.
对于在作物和杂草物种中鉴定出的一些抗性性状，植物生理学家对区分抗性和敏感基因型生理学的基因作用机制有详细了解。这些信息对于那些有兴趣将抗性突变的遗传学和生理学与抗性和敏感基因型的相对适合度数据相结合的进化生物学家可能有用。在之前的工作中，我们已经表明，抗氯磺隆的拟南芥的终生种子产量显著低于敏感植株，在此我们探讨适合度降低的潜在生理原因。此外，我们强调了在使用转基因技术探索适合度权衡时几个至关重要的方法学问题。
