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生态相互作用在整个生命树中被进化保存
José M Gómez1, Miguel Verdú, Francisco Perfectti
1Departamento de Ecología, Universidad de Granada, E-18071 Granada, Spain. jmgreyes@ugr.es
Nature
|June 4, 2010
概括
生态相互作用,如宿主使用,在多种不同的生物体中往往是进化保守的. 这项研究表明,即使是通用的相互作用也表现出了家族遗传保守主义,影响了宿主使用差异化.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 人类遗传学 是一个学科.
背景情况:
- 生态相互作用是生物生态和进化的基础.
- 遗传学保守主义,即特征是从祖先继承的,是对生态相互作用的假设.
- 现有的证据受到生态和分类学偏见的限制,往往侧重于专门的相互作用.
研究的目的:
- 调查宿主使用在广泛的生物体,包括通用和专业的演变.
- 评估在特殊情况下以外的生态相互作用中的遗传学保守主义假设.
- 确定不同类型的相互作用 (共生,非共生,互惠,对抗) 中是否保留相互作用模式.
主要方法:
- 对不同类型的无细胞,单细胞和多细胞生物体宿主使用进化的分析.
- 检查共生关系和非共生关系,互利关系和对抗关系之间的相互作用模式.
- 评估宿主使用差异化与遗传学保守主义和概括程度的关系.
主要成果:
- 一般化的生态相互作用表明进化保护,类似于专门的相互作用.
- 交互模式中的基因学保守主义在共生和非共生,互惠和对抗性交互中同样普遍.
- 主体使用差异化在遗传学上保存的分类中更大,无论专业化或分类群.
结论:
- 生态相互作用,包括普遍的,表现出显著的遗传学保守主义.
- 这种保守主义表明,生物系统在进化过程中存在着一致的组织模式.
- 生态相互作用的显著保守主义是跨种群生物多样性形成的关键因素.
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