Migration through a Major Andean Ecogeographic Disruption as a Driver of Genetic and Phenotypic Diversity in a Wild Tomato Species.
Migration through a Major Andean Ecogeographic Disruption as a Driver of Genetic and Phenotypic Diversity in a Wild Tomato Species.
复制标题
DOI：
10.1093/molbev/msab092
复制
发表时间：
2021-07-29
影响因子：
10.7
通讯作者：
Moghe GD
中科院分区：
文献类型：
--
作者：
Landis JB;Miller CM;Broz AK;Bennett AA;Carrasquilla-Garcia N;Cook DR;Last RL;Bedinger PA;Moghe GD
种群水平的进化动力在创造我们星球上的生命多样性方面发挥着核心作用。在这项研究中，我们试图了解这样的人口水平的变化在交配系统和防御性酰基糖化学茄habrochaites-野生番茄物种在不同的安第斯栖息地在厄瓜多尔和秘鲁的起源。利用限制性位点关联DNA测序（RAD-seq）技术对50份S. habrochaites种质进行了分析，通过4-6个祖先群体的分离和杂交动态，鉴定出8个群体聚类。这些集群的交配系统的详细表征揭示了出现多个自交不亲和（SC）组的祖先自交不亲和的种群在北方的一部分的物种范围。这些SC组的出现也与固定的有害等位基因灭活酰基糖乙酰化。Amotape-Huancabamba地带是安第斯山脉的一个地理标志，具有高度的特有性和孤立的微生境，被确定为北方物种范围内分化的主要驱动力，而大的地理距离有助于人口结构和一个新的SC组的进化在中部和南部的范围内，在那里物种也被推断为起源。这里提出的研究结果突出了秘鲁和厄瓜多尔的不同生态地理在产生人口分化的作用，并提高我们的理解创造生物多样性的微进化过程。
Evolutionary dynamics at the population level play a central role in creating the diversity of life on our planet. In this study, we sought to understand the origins of such population-level variation in mating systems and defensive acylsugar chemistry in Solanum habrochaites—a wild tomato species found in diverse Andean habitats in Ecuador and Peru. Using Restriction-site-Associated-DNA-Sequencing (RAD-seq) of 50 S. habrochaites accessions, we identified eight population clusters generated via isolation and hybridization dynamics of 4–6 ancestral populations. Detailed characterization of mating systems of these clusters revealed emergence of multiple self-compatible (SC) groups from progenitor self-incompatible populations in the northern part of the species range. Emergence of these SC groups was also associated with fixation of deleterious alleles inactivating acylsugar acetylation. The Amotape-Huancabamba Zone—a geographical landmark in the Andes with high endemism and isolated microhabitats—was identified as a major driver of differentiation in the northern species range, whereas large geographical distances contributed to population structure and evolution of a novel SC group in the central and southern parts of the range, where the species was also inferred to have originated. Findings presented here highlight the role of the diverse ecogeography of Peru and Ecuador in generating population differentiation, and enhance our understanding of the microevolutionary processes that create biological diversity.
登录
查看更多内容
影响因子：
5.3
作者：
Broz AK;Guerrero RF;Randle AM;Baek YS;Hahn MW;Bedinger PA
通讯作者：
Bedinger PA
影响因子：
3.7
作者：
Baird NA;Etter PD;Atwood TS;Currey MC;Shiver AL;Lewis ZA;Selker EU;Cresko WA;Johnson EA
通讯作者：
Johnson EA
影响因子：
7.2
作者：
Aflitos, Saulo;Schijlen, Elio;Peters, Sander
通讯作者：
Peters, Sander
从野生番茄茄构象QTL的高分辨率映射，影响根部冷藏下的水关系。
DOI：
10.1007/s00122-015-2540-y
发表时间：
2015-09
期刊：
TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
影响因子：
--
作者：
Arms EM;Bloom AJ;St Clair DA
通讯作者：
St Clair DA
影响因子：
16.6
作者：
Fan P;Miller AM;Liu X;Jones AD;Last RL
通讯作者：
Last RL