The role of phytopathogenicity in bark beetle-fungus symbioses: a challenge to the classic paradigm.
The role of phytopathogenicity in bark beetle-fungus symbioses: a challenge to the classic paradigm.
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DOI：
10.1146/annurev-ento-120709-144839
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发表时间：
2011
影响因子：
23.8
通讯作者：
D. Six;M. Wingfield
中科院分区：
文献类型：
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作者：
D. Six;M. Wingfield
与杀死树木的树皮甲虫相关的植物病原真菌对于压倒树木防御和导致宿主树死亡至关重要，本文称为经典范式（CP），这一观点几十年来一直推动着树皮甲虫-真菌共生的研究。它也强烈影响了我们对树皮甲虫生态学的看法。我们讨论了CP的基本缺陷，包括有毒真菌与杀死树木的树皮甲虫的关联缺乏一致性，宿主树中真菌的生长与成功攻击相关症状的发展之间缺乏对应性，以及真菌与不杀死树木的树皮甲虫的类似关联无处不在。我们认为，植物致病性对真菌发挥着重要作用，而不是对宿主甲虫发挥支持作用（杀死树木）。特别是，植物致病性可能介导真菌之间的竞争性相互作用，并支持活的防御性树木的生存和有效的资源捕获。
The idea that phytopathogenic fungi associated with tree-killing bark beetles are critical for overwhelming tree defenses and incurring host tree mortality, herein called the classic paradigm (CP), has driven research on bark beetle-fungus symbiosis for decades. It has also strongly influenced our views of bark beetle ecology. We discuss fundamental flaws in the CP, including the lack of consistency of virulent fungal associates with tree-killing bark beetles, the lack of correspondence between fungal growth in the host tree and the development of symptoms associated with a successful attack, and the ubiquity of similar associations of fungi with bark beetles that do not kill trees. We suggest that, rather than playing a supporting role for the host beetle (tree killing), phytopathogenicity performs an important role for the fungi. In particular, phytopathogenicity may mediate competitive interactions among fungi and support survival and efficient resource capture in living, defensive trees.