Genetically based susceptibility to herbivory influences the ectomycorrhizal fungal communities of a foundation tree species.
Genetically based susceptibility to herbivory influences the ectomycorrhizal fungal communities of a foundation tree species.
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DOI：
10.1111/j.1469-8137.2009.03016.x
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发表时间：
2009-11
期刊：
影响因子：
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通讯作者：
Christopher M. Sthultz;T. Whitham;K. Kennedy;Ron J. Deckert;C. Gehring
中科院分区：
文献类型：
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作者：
Christopher M. Sthultz;T. Whitham;K. Kennedy;Ron J. Deckert;C. Gehring
尽管最近的研究表明食草动物与植物相关的微生物以复杂的方式相互作用，但很少有研究使用群落方法来检验这些相互作用。例如，草食对外生菌根真菌群落结构的影响还不是很清楚。寄主植物遗传学对电动势群落组成的影响也鲜为人知。我们利用对食草性的敏感性有遗传基础的研究系统和一个长达20年的昆虫清除实验来考察慢性食草性和植物遗传学对橘子松电动势群落结构的影响。我们比较了草食动物抗性树、草食动物敏感树和草食动物敏感树的电动势群落，其中草食动物在两个日期相隔10年被实验移除。在两年的采样中，抗病和感病树木的电动势群落组成存在显著差异。经过10年和20年的除草后，除草树的电动势群落与感病树相似，但与抗虫树不同。与草食性相关的植物性状的先天遗传差异对EMF群落组成的影响大于草食性对寄主植物与外生菌根真菌关系的间接影响。
Although recent research indicates that herbivores interact with plant-associated microbes in complex ways, few studies have examined these interactions using a community approach. For example, the impact of herbivory on the community structure of ectomycorrhizal fungi (EMF) is not well known. The influence of host plant genetics on EMF community composition is also poorly understood. We used a study system in which susceptibility to herbivory has a genetic basis and a 20-yr insect removal experiment to examine the influence of chronic herbivory and plant genetics on the EMF community structure of Pinus edulis. We compared EMF communities of herbivore resistant trees, herbivore susceptible trees and herbivore susceptible trees from which herbivores were experimentally removed at two dates 10 yr apart. In both years sampled, resistant and susceptible trees differed significantly in EMF community composition. After 10 yr and 20 yr of herbivore removal, the EMF communities of removal trees were similar to those of susceptible trees, but different from resistant trees. The EMF community composition was more strongly influenced by innate genetic differences in plant traits associated with resistance and susceptibility to herbivory than by indirect effects of herbivory on host plant relationships with ectomycorrhizal fungi.