宏观藻类微生物群的生物地理是由环境驱动因素而不是地理距离决定的
William S Pearman1,2,3, Grant A Duffy1, Xiaoyue P Liu1
1Department of Marine Science, University of Otago, New Zealand.
Annals of botany
|October 7, 2023
概括
主体大藻及其微生物群表现出不同的生物地理模式. 主体相似性随着距离的增长而减少,而微生物组相似性取决于环境因素,这表明环境选择塑造了微生物群落.
科学领域:
- 生态生态学 生态生态学
- 微生物生态学 微生物生态学
- 生物地理学 生物地理学
背景情况:
- 主体和微生物群生物地理学为微生物社区组装驱动器提供了洞察力.
- 距离衰变关系是由选择性和非选择性过程塑造的.
- 共同宿主-微生物组生物地理对于理解微生物组促进的适应至关重要.
研究的目的:
- 调查模型大藻Durvillaea及其相关微生物组的合生物地理.
- 确定驱动宿主和微生物群体社区结构的过程.
- 将微生物组组成与环境因素和宿主分布联系起来.
主要方法:
- 通过测序 (GBS) 进行基因型化,用于宿主基因型化.
- 用于微生物组概况的16S rRNA amplicon测序.
- 分析环境数据以与宿主和微生物组模式相关联.
主要成果:
- 主体和微生物组表现出共同的生物地理结构,但是由不同的过程驱动的.
- 主体生物地理显示地理距离衰变,而微生物组生物地理显示环境距离衰变.
- 微生物的丰富性与环境选择有关;不太常见的微生物受到中性过程的影响,而不是生态漂移.
结论:
- 宏观藻类宿主遵循典型的生物地理模式,而它们的微生物组主要是由环境条件塑造的.
- 巴斯·贝金假设 ("一切都在各地,环境选择") 对于宏观藻类微生物组是相关的.
- 人类变化可能会使宿主和微生物组的生物地理分离,这是由于对环境变化的反应不同.
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