Fraser Douglas
Department of the Natural and Built Environment Sheffield Hallam University Sheffield UK.
Ecol Evol. 2019 Sep 30;9(20):11619-11630. doi: 10.1002/ece3.5611. eCollection 2019 Oct.
, typically regarded as a rich grassland or open forest "mushroom" species, was found fruiting abundantly on nests of , occurring in a plantation. Fruiting was absent from the rest of the woodland.Research focussed on the activities in the nests that could explain this. Within nests, there was a spatial relationship between mycelium, insect cadavers, fruitbody initiation, and roots of adjacent trees.In vitro experiments found that was not mycorrhizal with , but that it had qualities which rendered it suitable for colonization of the rhizosphere in the conditions of the nest mound and for further niche development.Implications of the unusual presence of fruit-bodies and the distribution of associated hyphae are discussed in relation to the nutritional biology (and recent taxonomical reassignment) of the fungus. This includes reference to the relevant physiology of insects and to the accepted evolution of mutualistic symbioses between fungi and the Attini and Termitidae.An argument is presented that the situation observed in vivo provides evidence of a degree of facultative association and what could be tangible support for the theory for the developmental origin of mutualistic fungus cultivation by insects. It is presented as a context for continued experimental research.
通常被视为丰富草原或开阔森林的“蘑菇”物种，在种植园中的蚁巢上大量结果。林地的其他地方没有结果现象。研究集中在蚁巢中的活动，以解释这种现象。在蚁巢内，菌丝体、昆虫尸体、子实体形成和相邻树木的根系之间存在空间关系。体外实验发现，[具体物种名称]与[相关物种名称]没有菌根关系，但它具有一些特性，使其适合在蚁巢土堆的条件下在根际定殖并进一步发展生态位。讨论了子实体异常出现和相关菌丝分布与真菌营养生物学（以及最近的分类重新分配）的关系。这包括参考昆虫的相关生理学以及真菌与切叶蚁和白蚁科之间互利共生关系的公认进化。有人认为，体内观察到的情况提供了一定程度的兼性关联的证据，以及对昆虫互利真菌栽培发育起源理论的切实支持。它被作为持续实验研究的背景呈现。
