COSTS AND BENEFITS OF PLANT-RESPONSES TO DISEASE - RESISTANCE AND TOLERANCE
COSTS AND BENEFITS OF PLANT-RESPONSES TO DISEASE - RESISTANCE AND TOLERANCE
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DOI：
10.1111/j.1558-5646.1994.tb02227.x
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发表时间：
1994-12-01
期刊：
影响因子：
3.3
通讯作者：
TRIPLETT, J
中科院分区：
文献类型：
--
作者：
SIMMS, EL;TRIPLETT, J
植物抗病性进化模型的一个主要假设是植物抗病性涉及适合度成本。为了验证这一假设，进行了田间试验，以便可以使用定量遗传分析来检测健身成本Ipamoea purpurea的不同的真菌菌株的炭疽病，病原真菌引起的疾病炭疽病的炭疽病。这个实验没有证据表明对炭疽病的抗性涉及直接的健康成本。然而，在不同的疾病环境之间的植物健身无关的电阻检测权衡。耐受性，定义为补偿部分由疾病引起的健身减少的能力，被发现涉及健身成本。半同胞家庭，更宽容的疾病有较低的健身在没有疾病。的可能性，宽容的成本可能会掩盖健身成本的阻力进行了探讨。
A major assumption of models of the evolution of plant resistance to disease is that plant resistance involves fitness costs. To test this assumption, a field experiment was performed so that a quantitative-genetic analysis could be used to detect fitness costs to Ipamoea purpurea of resistance to different fungal isolates of Colletotrichum dematium, a pathogenic fungus causing the disease anthracnose. This experiment yielded no evidence that resistance to anthracnose involves direct fitness costs. Nevertheless, trade-offs in plant fitness that were unrelated to resistance were detected between different disease environments. Tolerance, defined as the ability to compensate in part for fitness decrements caused by disease, was found to involve fitness costs. Half sib families that were more tolerant of disease had lower fitness in the absence of disease. The possibility that the cost of tolerance could obscure fitness costs of resistance is explored.