Senecio as a model system for integrating studies of genotype, phenotype and fitness.
Senecio as a model system for integrating studies of genotype, phenotype and fitness.
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DOI：
10.1111/nph.16434
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发表时间：
2020-01
期刊：
影响因子：
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通讯作者：
Greg M. Walter;R. Abbott;A. Brennan;J. Bridle;M. Chapman;James W. Clark;D. Filatov;B. Nevado
中科院分区：
文献类型：
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作者：
Greg M. Walter;R. Abbott;A. Brennan;J. Bridle;M. Chapman;James W. Clark;D. Filatov;B. Nevado
有两个主要的发展使我们有可能使用生态辐射的例子作为模型系统来理解进化和生态学。首先，数量遗传学与生态学实验的结合使得基因型、表型和田间适应性之间能够建立起详细的联系。其次，分子遗传学的巨大进步为将实地和实验室实验与详细的基因测序相结合创造了新的可能性。结合这些方法，进化生物学家可以更好地研究基因型，表型和适应性之间的相互作用，以探索广泛的进化过程。在这里，我们提出属千里光（菊科）作为一个优秀的系统，以整合这些发展，并解决生态学和进化的基本问题。千里光属是开花植物中最大和表型最多样的属之一，包括从多年生木本植物到一年生草本植物的种类。这些千里光属物种表现出许多生长习性，生活史和形态，并占据了众多的环境。在该属中常见的是自然杂交的物种，经历了多倍体繁殖，并殖民于不同的环境，通常通过快速的表型分化和适应性辐射。这些不同的实验属性，使千里光一个有吸引力的模型系统，以解决广泛的问题，在进化和生态学。
Two major developments have made it possible to use examples of ecological radiations as model systems to understand evolution and ecology. First, the integration of quantitative genetics with ecological experiments allows detailed connections to be made between genotype, phenotype and fitness in the field. Second, dramatic advances in molecular genetics have created new possibilities for integrating field and laboratory experiments with detailed genetic sequencing. Combining these approaches allows evolutionary biologists to better study the interplay between genotype, phenotype and fitness to explore a wide range of evolutionary processes. Here, we present the genus Senecio (Asteraceae) as an excellent system to integrate these developments, and to address fundamental questions in ecology and evolution. Senecio is one of the largest and most phenotypically diverse genera of flowering plants, containing species ranging from woody perennials to herbaceous annuals. These Senecio species exhibit many growth habits, life histories and morphologies, and occupy a multitude of environments. Common within the genus are species that have hybridised naturally, undergone polyploidisation, and colonised diverse environments, often through rapid phenotypic divergence and adaptive radiation. These diverse experimental attributes make Senecio an attractive model system in which to address a broad range of questions in evolution and ecology.