半,绿色生物膜和真之间的一个被不公正地忽视的共生系统
Jan Vondrák1,2, Stanislav Svoboda1,2, Pavel Říha2
1Institute of Botany of the Czech Academy of Sciences, Zámek 1, 25243, Průhonice, Czech Republic.
Scientific reports
|December 8, 2025
概括
我们发现了半,一种新的藻类-真菌共生,绿色生物膜和之间的中间体. 这些有弹性的生物在恶劣的环境中壮成长,展示了陆地生命必不可少的藻类和真菌共存.
科学领域:
- 生态生态学 生态生态学
- 菌类学 菌类学是指菌类学.
- 物理学的生理学
背景情况:
- 陆地生物群是光合作用微生物和真菌的广泛共生系统的宿主,水是最复杂的.
- 绿色生物片代表了这些共生的最简单形式,其中包括一个尚未探索的真菌成分 (mycobiome).
- 简单的绿色生物膜和复杂的水之间存在一个差距,表明中间的共生形式.
研究的目的:
- 描述一种新型的共生系统,称为"semilichens",位于绿色生物膜和之间.
- 调查半类动物中藻类和真菌伙伴的身份,形态和生理学.
- 为了比较半藻类与其他陆地藻类-真菌共生,并了解它们的生态利基.
主要方法:
- 利用光和光显微镜进行形态分析.
- 为了物种识别,采用了eDNA测序和分子族系学.
- 应用素a光和13C标记/代谢学来评估光合作用活动和碳流.
主要成果:
- 识别了半虫作为藻类 (Trebouxiophyceae,Ulvophyceae) 和一种主要的真菌 (各种Ascomycota类) 之间的共生.
- 在藻类中确认了活性光合作用,并通过聚合物合成 (阿拉比托,曼尼托) 向真菌证明了碳转移.
- 半叶草的特点是最小的要求,低生物质生产,以及居住在极端环境中的能力.
结论:
- 半类植物代表着陆地藻类和真菌共生的一种独特的中间形式.
- 它们的最小要求和生理能力允许它们殖民不适合鱼的息地.
- 藻类和真菌的共存对于这些生物体在容易干燥的陆地环境中生存至关重要.
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