The evolution of adaptive interactions with beneficial, neutral and detrimental microbes was one of the key features enabling plant terrestrialization. Extensive studies have revealed conserved and unique molecular mechanisms underlying plant-microbe interactions across different plant species; however, most insights gleaned to date have been limited to seed plants. The liverwort Marchantia polymorpha, a descendant of early diverging land plants, is gaining in popularity as an advantageous model system to understand land plant evolution. However, studying evolutionary molecular plant-microbe interactions in this model is hampered by the small number of pathogens known to infect M. polymorpha. Here, we describe four pathogenic fungal strains, Irpex lacteus Marchantia-infectious (MI)1, Phaeophlebiopsis peniophoroides MI2, Bjerkandera adusta MI3 and B. adusta MI4, isolated from diseased M. polymorpha. We demonstrate that salicylic acid (SA) treatment of M. polymorpha promotes infection of the I. lacteus MI1 that is likely to adopt a necrotrophic lifestyle, while this effect is suppressed by co-treatment with the bioactive jasmonate in M. polymorpha, dinor-cis-12-oxo-phytodienoic acid (dn-OPDA), suggesting that antagonistic interactions between SA and oxylipin pathways during plant-fungus interactions are ancient and were established already in liverworts.

中文翻译：

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从多形玛氏酵母中分离天然真菌病原体揭示了在艾草-真菌相互作用过程中水杨酸和茉莉酸酯之间的拮抗作用。

与有益，中性和有害微生物的适应性相互作用的进化是实现植物特异化的关键特征之一。广泛的研究揭示了不同植物物种间植物-微生物相互作用的保守且独特的分子机制。但是，迄今为止收集到的大多数见解仅限于种子植物。早熟陆生植物的后裔多形草地钱马尔凯蒂尼亚（Marchentia polymorpha）作为了解陆生植物进化的有利模型系统，正逐渐受到人们的欢迎。但是，在该模型中研究进化分子植物与微生物的相互作用受到少数感染多形支原体的病原体的阻碍。在这里，我们描述了四种致病性真菌菌株：Irpex lacteus Marchantia-Infectious（MI）1，Phaeophlebiopsis peniophoroides MI2，Bjerkandera adusta MI3和B. adusta MI4，从患病多态性吗啡分离。我们证明了水杨酸（SA）治疗多形麦芽孢杆菌可促进乳酸多歧杆菌MI1的感染，这很可能采用坏死性生活方式，而与多形麦芽孢杆菌中的生物活性茉莉酸酯共同治疗可抑制这种作用，顺式-12-氧-植物二烯酸（dn-OPDA），表明SA-和脂蛋白途径之间在植物-真菌相互作用过程中的拮抗作用是古老的，并且已经在艾草中建立。