Inducible nicotine production in native Nicotiana as an example of adaptive phenotypic plasticity
Inducible nicotine production in native Nicotiana as an example of adaptive phenotypic plasticity
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DOI：
10.1023/a:1020880931488
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发表时间：
1999-01-01
影响因子：
2.3
通讯作者：
Baldwin, IT
中科院分区：
文献类型：
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作者：
Baldwin, IT
尼古丁是烟草属许多物种中的一种诱导型防御，它增强了适应性表型可塑性。综述了其产生的机制，并对诱导性状状态进行了异速生长表征，以了解个体发育过程中诱导性的变化如何响应影响植物生长的环境变量，并将诱导性产生与植物适合度相关。健身成本和利益的诱导尼古丁生产的经验证据被认为是，并考虑可能负责的成本的生理和生态机制。深入了解植物的自然历史是理解这些成本和收益的必要前提。诱导尼古丁的产生只是草食动物攻击后改变的许多性状之一，成本效益模型提供了一个有价值的启发式框架，以了解负责维持诱导表达性状的选择性因素。
Nicotine, an inducible defense in a number of Nicotiana species, exemplifies adaptive phenotypic plasticity. The mechanisms responsible for its production are reviewed, and the induced character states are characterized allometrically in order to understand how inducibility changes over ontogeny responds to environmental variables that influence plant growth, and to relate inducible production to plant fitness correlates. The empirical evidence for fitness costs and benefits of inducible nicotine production are considered, and the physiological and ecological mechanisms potentially responsible for the costs are considered. An intimate understanding of the plant's natural history is an essential prerequisite to understanding these costs and benefits. Inducible nicotine production is just one of many traits that are altered after herbivore attack, and the cost-benefit model provides a valuable heuristic framework in which to understand the selective factors responsible for the maintenance of inducibly expressed traits.