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Diversity and bioprospecting of cultivable fungal assemblages in sediments of lakes in the Antarctic Peninsula
Fungal Biology ( IF 2.9 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.funbio.2020.02.015
Mayara B Ogaki 1 , Daniela R Teixeira 1 , Rosemary Vieira 2 , Juan M Lírio 3 , João P S Felizardo 2 , Rodrigo C Abuchacra 4 , Renan P Cardoso 5 , Carlos L Zani 6 , Tânia M A Alves 6 , Policarpo A S Junior 6 , Silvane M F Murta 6 , Emerson C Barbosa 6 , Jaquelline G Oliveira 6 , Isabela P Ceravolo 6 , Patrícia O Pereira 6 , Carlos A Rosa 1 , Luiz H Rosa 1
Affiliation  

We recovered 195 fungal isolates from the sediments of different lakes in the Antarctic Peninsula, which were screened to detect bioactive compounds. Forty-two taxa belonging to the phyla Ascomycota, Basidiomycota, and Mortierellomycota were identified. Thelebolus globosus, Antarctomyces psychrotrophicus, Pseudogymnoascus verrucosus, Vishniacozyma victoriae, and Phenoliferia sp. were found to be the most prevalent. The fungal assemblages showed high diversity and richness, but low dominance values. However, the diversity indices and fungal distribution ranged according to the different lake sediments. Sixty fungal extracts displayed at least one biological activity against the evaluated targets. Among them, Pseudogymnoascus destructans showed selective trypanocidal activity, Cladosporium sp. 1 and Trichoderma polysporum showed antifungal activity, and Pseudogymnoascus appendiculatus and Helotiales sp. showed high herbicidal activity. We detected a rich and diverse fungal community composed of cold cosmopolitan and psychrophilic endemic taxa recognized as decomposers, symbiotics, pathogens, and potential new species, in the sediments of Antarctic lakes. The dynamics and balance of this fungal community represents an interesting aquatic web model for further ecological and evolutionary studies under extreme conditions and potential climate changes in the regions. In addition, we detected fungal taxa and isolates able to produce bioactive compounds that may represent the source of prototype molecules for applications in medicine and agriculture.

中文翻译:

南极半岛湖泊沉积物中可培养真菌群落的多样性和生物勘探

我们从南极半岛不同湖泊的沉积物中回收了 195 种真菌分离物,并对其进行了筛选以检测生物活性化合物。鉴定了属于子囊菌门、担子菌门和被孢霉门的 42 个分类群。Thelebolus globosus、Antarctomyces psychrotrophicus、Pseudogymnoascus verrucosus、Vishniacozyma victoriae 和 Phenoliferia sp。被发现是最普遍的。真菌组合表现出高度的多样性和丰富度,但优势值较低。然而,多样性指数和真菌分布根据不同的湖泊沉积物而变化。60 种真菌提取物显示出至少一种针对评估目标的生物活性。其中, Pseudogymnoascus destructans 表现出选择性的锥虫杀灭活性, Cladosporium sp。1和多孢木霉表现出抗真菌活性,和 Pseudogymnoascus appendiculatus 和 Helotiales sp。表现出较高的除草活性。我们在南极湖泊的沉积物中检测到一个丰富多样的真菌群落,由寒冷的世界性和嗜冷的地方性分类群组成,被认为是分解者、共生体、病原体和潜在的新物种。该真菌群落的动态和平衡代表了一个有趣的水生网络模型,可用于在极端条件和该地区潜在的气候变化下进行进一步的生态和进化研究。此外,我们检测到能够产生生物活性化合物的真菌类群和分离物,这些化合物可能代表用于医学和农业的原型分子的来源。我们在南极湖泊的沉积物中检测到一个丰富多样的真菌群落,由寒冷的世界性和嗜冷的地方性分类群组成,被认为是分解者、共生体、病原体和潜在的新物种。该真菌群落的动态和平衡代表了一个有趣的水生网络模型,可用于在极端条件和该地区潜在的气候变化下进行进一步的生态和进化研究。此外,我们检测到能够产生生物活性化合物的真菌类群和分离物,这些化合物可能代表用于医学和农业的原型分子的来源。我们在南极湖泊的沉积物中检测到一个丰富多样的真菌群落,由寒冷的世界性和嗜冷的地方性分类群组成,被认为是分解者、共生体、病原体和潜在的新物种。该真菌群落的动态和平衡代表了一个有趣的水生网络模型,可用于在极端条件和该地区潜在的气候变化下进行进一步的生态和进化研究。此外,我们检测到能够产生生物活性化合物的真菌类群和分离物,这些化合物可能代表用于医学和农业的原型分子的来源。该真菌群落的动态和平衡代表了一个有趣的水生网络模型,可用于在极端条件和该地区潜在的气候变化下进行进一步的生态和进化研究。此外,我们检测到能够产生生物活性化合物的真菌类群和分离物,这些化合物可能代表用于医学和农业应用的原型分子的来源。该真菌群落的动态和平衡代表了一个有趣的水生网络模型,可用于在极端条件和该地区潜在的气候变化下进行进一步的生态和进化研究。此外,我们检测到能够产生生物活性化合物的真菌类群和分离物,这些化合物可能代表用于医学和农业应用的原型分子的来源。
更新日期:2020-06-01
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