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首页> 外文期刊>The Lichenologist >Challenging the lichen concept: Turgidosculum ulvae (Verrucariaceae) represents an independent photobiont shift to a multicellular blade-like alga
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Challenging the lichen concept: Turgidosculum ulvae (Verrucariaceae) represents an independent photobiont shift to a multicellular blade-like alga

机译:挑战地衣概念:TurgiCosculumulvae(verrucariaceae)代表独立的Photobiont转移到多细胞叶片样藻

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摘要

Some definitions of the term lichen' have often emphasized the role of the mycobiont as exhabitant in the symbiosis. Mastodia tessellata and Turgidosculum ulvae, both forming lichen-like associations with foliose algae, have traditionally defied that definition. In this study, we delve into the poorly known association of T. ulvae with Blidingia minima. Using four molecular markers (nrLSU, nrSSU, RPB1, mtSSU) we show that T. ulvae is a member of the family Verrucariaceae, closely related to the marine species Verrucaria ditmarsica. The presence of bitunicate asci and single-cell ascospores is confirmed. Our analysis of a fragment of the rbcL marker demonstrates that the photosynthetic partner belongs to B. minima, although relationships within this taxon remain unclear. Transmission electron microscopy allowed us to illustrate how T. ulvae interacts with Blidingia cells, and how haustoria in that species differ from those previously investigated in other marine lichen-forming fungi.
机译:地衣术语的一些定义经常强调肌比的作用是在共生中的偶恰当。 Mastodia Tessellata和TurgiCostulumulvae,两者与叶藻藻藻形成类似地藻类的关联,传统上都定义了该定义。 在这项研究中,我们深入了解乌鲁瓦的令人难以知的T.ulvae与Blipationia Minima。 使用四个分子标记(NRLSU,NRSSU,RPB1,MTSSU),我们表明T.Ulvae是verrucariaceae家族的成员,与海洋物种Verrucaria ditmarsica密切相关。 确认了点燃ASCI和单细胞基亚孢子的存在。 我们对RBCL标记的片段的分析表明,光合伴侣属于B. Minima,尽管该分类内的关系仍然不清楚。 透射电子显微镜使我们允许我们说明乌尔沃如何与Bloationia细胞相互作用,以及该物种的血牌学如何与此前在其他海洋地衣成立的真菌中进行的那些。

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