Atrouz Kamel, Bousba Ratiba, Marra Francesco Paolo, Marchese Annalisa, Conforti Francesca Luisa, Perrone Benedetta, Harkat Hamza, Salimonti Amelia, Zelasco Samanta
Council for Agricultural Research and Economics-Research Centre for Olive, Fruit and Citrus Crops, 87036 Rende, Italy.
Department of Biology and Plant Ecology, Faculty of Natural Sciences and Life, Frères, Mentouri University, Constantine 25000, Algeria.
Plants (Basel). 2021 Apr 1;10(4):678. doi: 10.3390/plants10040678.
Olive tree with its main final product, olive oil, is an important element of Mediterranean history, considered the emblematic fruit of a civilization. Despite its wide diffusion and economic and cultural importance, its evolutionary and phylogenetic history is still difficult to clarify. As part of the Mediterranean basin, Algeria was indicated as a secondary diversification center. However, genetic characterization studies from Maghreb area, are currently underrepresented. In this context, we characterized 119 endemic Algerian accessions by using 12 microsatellite markers with the main goal to evaluate the genetic diversity and population structure. In order to provide new insights about the history of olive diversification events in the Central-Western Mediterranean basin, we included and analyzed a sample of 103 Italian accessions from Sicily and, a set of molecular profiles of cultivars from the Central-Western Mediterranean area. The phylogenetic investigation let us to evaluate genetic relationships among Central-Mediterranean basin olive germplasm, highlight new synonymy cases to support the importance of vegetative propagation in the cultivated olive diffusion and consolidate the hypothesis of more recent admixture events occurrence. This work provided new information about Algerian germplasm biodiversity and contributed to clarify olive diversification process.
橄榄树及其主要最终产品橄榄油是地中海历史的重要元素，被视为一种文明的标志性水果。尽管其分布广泛且具有经济和文化重要性，但其进化和系统发育历史仍难以阐明。作为地中海盆地的一部分，阿尔及利亚被认为是一个次生多样化中心。然而，目前来自马格里布地区的遗传特征研究较少。在此背景下，我们使用12个微卫星标记对119份阿尔及利亚地方品种进行了特征分析，主要目的是评估遗传多样性和群体结构。为了提供有关中西部地中海盆地橄榄多样化事件历史的新见解，我们纳入并分析了103份来自西西里岛的意大利品种样本以及一组中西部地中海地区品种的分子图谱。系统发育研究使我们能够评估地中海中部盆地橄榄种质之间的遗传关系，突出新的同义性案例以支持营养繁殖在栽培橄榄传播中的重要性，并巩固近期发生混合事件的假设。这项工作提供了有关阿尔及利亚种质生物多样性的新信息，并有助于阐明橄榄的多样化过程。
