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Cobalt(II) nitrate hexahydrate

硝酸钴(II)六水合物

Company: Sigma-Aldrich
Catalog#: 60832
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Axenic Cultivation of Mycelium of the Lichenized Fungus, Lobaria pulmonaria (Peltigerales, Ascomycota)
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2015-07-05
[Abstract]  Lichens are symbiotic organisms consisting of a fungal partner (the mycobiont) and one or more algal or cyanobacterial partners (the photobiont); moreover lichen thalli comprise a plethora of epi- and endobiotic bacteria and non-lichenized fungi. Genetic markers are the most promising tools for the study of fungal diversity. However, applying genetic methods to intimately admixed symbiotic organisms typically requires the development of species-specific genetic markers, since DNA extraction from environmental specimens implicates the acquirement of total DNA of all symbionts and their cohabitants. While the cultivation of the alga is straight forward, the axenic cultivation of lichen-forming fungi is more difficult due to their very slow growth, as compared with the majority of ... [摘要]  地衣是由真菌伴侣(分枝杆菌)和一个或多个藻类或蓝藻合作伙伴(photobiont)组成的共生生物;此外,地衣thalli包括过多的表皮和内生菌和非地衣真菌。遗传标记是真菌多样性研究最有希望的工具。然而,将遗传方法应用于紧密混合的共生生物通常需要开发物种特异性遗传标记,因为从环境样品中提取DNA涉及获得所有共生体及其同居者的总e DNA。虽然藻类的培养是直接的,但是与大多数非地衣类群相比,由于其生长非常缓慢,形成地衣的真菌的无性繁殖更加困难,并且在内部存在腐生,内生和寄生真菌地衣thallus。此外,形成地衣的真菌(主要是子囊菌,少数担子菌)是营养不良的生物,因此适应营养不良的条件;在营养丰富的培养基中,如通常用于大规模生产快速生长的腐生真菌的无菌培养中,它们经常自动毒害。大多数形成地衣的真菌不是专性生物营养的,因此可以在非共生状态下培养。
在这里,我们提出了一种用于分离形成地衣的子囊菌无菌培养和作为纯真菌DNA来源的菌丝体培养。我们描述从发芽子囊孢子在琼脂平板上的无菌培养的开始,并解释在液体培养基中的体外生长的优化。通过研磨几个密集的,只有离心生长的真菌菌落,用匀浆器,我们获得许多较小的,生长良好的菌落,因此更高量的菌丝体用于DNA或RNA分离(Honegger和Bartnicki-Garcia,1991)。

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