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Rhodotorula mucilaginosa:一种新的潜在的人类病原体,在状植物Paramecium bursaria中发现

Elena Sabaneyeva¹, Ekaterina Kursacheva², Galina Vizichkanich^2,3

¹Department of Cytology and Histology, Faculty of Biology, Saint-Petersburg State University, Saint-Petersburg, Russian Federation. e.sabaneeva@spbu.ru.

|January 2, 2025

概括

这项研究描述了状植物Paramecium tritobursaria和酵母Rhodotorula mucilaginosa之间的新的共生关系. 酵母可以作为状体的食物来源,可能作为人类病原体载体.

科学领域:

微生物学微生物学
交生研究交生研究
亲生组织学亲生组织学亲生组织学

背景情况:

类生物与原生生物和真核生物微生物有着多样化的共生关系.
最近的研究重点是使用现代分子技术重新描述以前记录的共生系统.
状植物Paramecium bursaria以其与动物菌的共生而闻名.

研究的目的:

在形态和分子上描述Paramecium tritobursaria和Rhodotorula mucilaginosa之间的共生关系.
研究Rhodotorula mucilaginosa的传染性和潜在作用,作为状动物中的内共生生物.
在潜在的人类病原体的背景下探索这种共生关系的含义.

主要方法:

从Paramecium tritobursaria的自然种群中分离和描述Rhodotorula mucilaginosa.
对状菌与酵母菌相互作用的形态分析.
酵母物种的分子识别.酵母物种的分子识别.
使用无内共生体的状细胞系 (Paramecium tritobursaria和Paramecium deuterobursaria) 的实验性感染.
根据度和宿主消化,评估酵母的传染性.

主要成果:

鉴定和描述了帕拉梅三虫和Rhodotorula mucilaginosa之间的共生关系.
发现酵母菌的传染性取决于度,状细胞表现出酵母细胞的部分消化.
内共生酵母可以充当营养储备,增强宿主对饥饿的耐受性.
在这个系统和P. bursaria-zoochlorellae共生之间观察到相似之处.

结论:

Rhodotorula mucilaginosa可以与Paramecium tritobursaria建立一个内共生关系,可能作为一种食物来源.
这一发现支持了状动物可以承载机会性人类病原体的概念.
含有这种微生物的藻类可以作为传播潜在的人类病原体的载体.

关键词:

罗多托鲁拉粘液 (R. rubra) 是一种植物.基里亚的基里亚人.隐秘的物种综合体隐秘的物种综合体这是内生共生 (endosymbiosis).机会主义的病原体.

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