Department of Plant and Environmental Sciences, University of Gothenburg, Box 461, 405 30 Göteborg, Sweden.
Mol Phylogenet Evol. 2010 May;55(2):431-42. doi: 10.1016/j.ympev.2010.02.011. Epub 2010 Feb 17.
Inocybaceae is one of the larger families among the gilled mushrooms (Agaricales) but their morphology-based taxonomy is still not fully settled considering molecular-based phylogenetic insights. Here we investigate the evolution of five morphological and four ecological characters using ancestral state reconstruction methods. All the morphological characters are correlated with the phylogeny, but we find spore shape and presence of cortina, to have the greatest taxonomic potential, as they are the most evolutionarily conserved. None of the five characters have, however, evolved in a way that easily delimits inclusive monophyletic groups and the section level taxonomy needs revision. Host preference, preference for calcareous soil, and soil nutritional status preference are shown to be reflective of the evolutionary history of the species at the scale investigated here while soil moisture preference is not. The states of three of the four ecological characters can therefore be predicted in a phylogenetic framework for species where they are unknown.
鸡油菌科是蘑菇目（伞菌目）中较大的科之一，但考虑到基于分子的系统发育见解，其基于形态的分类仍然没有完全确定。在这里，我们使用祖先状态重建方法研究了五个形态学和四个生态学特征的进化。所有形态特征都与系统发育相关，但我们发现孢子形状和存在的菌环具有最大的分类潜力，因为它们是最进化保守的。然而，这五个特征中没有一个以易于划定包容性单系群的方式进化，因此需要对分类群进行修订。在这里研究的范围内，宿主偏好、对石灰性土壤的偏好以及对土壤营养状况的偏好被证明反映了物种的进化历史，而土壤水分偏好则没有。因此，在不知道某些物种的情况下，可以在系统发育框架中预测这四个生态学特征中的三个的状态。
