Genetic and allelopathic differences between populations of daisy fleabane Erigeron annuus (L.) Pers. (Asteraceae) from disturbed and stable habitats |
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| Affiliation: | 1. Institute of Biosciences, Life Sciences Center, Vilnius University, LT-10257 Vilnius, Lithuania;2. Botanical Garden of Vilnius University, Vilnius University, LT-10239 Vilnius, Lithuania;1. School of Pharmacy, University of Camerino, Italy;2. School of Bioscience and Veterinary Medicine, University of Camerino, Centro Ricerche Floristiche dell''Appennino, San Colombo, Barisciano, Italy;1. Departamento de Biologia Geral, Universidade Federal de Minas Gerais, CP 486, Belo Horizonte, MG 31270-901, Brazil;2. Departamento de Botância, Universidade Federal de Minas Gerais, CP 486, Belo Horizonte, MG 31270-901, Brazil;1. Archaeobiology Group, Institute of History, Spanish National Research Council (CCHS-CSIC), Albasanz 26-28, 28037 Madrid, Spain;2. University of the Basque Country (UPV/EHU), Francisco Tomás y Valiente, s/n. Apdo. 2111, 01006 Vitoria-Gasteiz, Spain;1. Institute for Sustainable Plant Production, Austrian Agency for Health and Food Safety, Spargelfeldstraße 191, 1220 Vienna, Austria;2. Institute of Agricultural Sciences in the Tropics, Agroecology Unit, University of Hohenheim, Garbenstraße 13, 70593 Stuttgart, Germany;3. Agroscope, Route de Duillier 50, Case Postale 1012, 1260 Nyon, Switzerland;4. Dipartimento di Biologia, Universita degli Studi di Napoli Federico II, Via Foria 223—Orto Botanico, 80139 Napoli, Italy;5. Departamento de Producción Vegetal, Universitat Politècnica de València, Camino de Vera, S/N, 46022 Valencia, Spain;6. Data, Statistics & Integrative Risk Assessment, Austrian Agency for Health and Food Safety, Spargelfeldstraße 191, 1220 Vienna, Austria;7. Botanic Garden of Meise, Nieuwelaan 38, 1860 Meise, Belgium;8. Division of Conservation Biology, Vegetation and Landscape Ecology, University of Vienna, Rennweg 14, 1030 Vienna, Austria;1. State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. Botanic Institute of Barcelona (IBB, CSIC-ICUB), Pg. del Migdia, s.n., 08038 Barcelona, Spain;4. Systematics and Evolution of Vascular Plants (UAB) – Associated Unit to CSIC, Departament de Biologia Animal, Biologia Vegetal i Ecologia, Facultat de Biociències, Universitat Autònoma de Barcelona, ES-08193 Bellaterra, Spain;5. Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China |
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| Abstract: | The interactions between invasive plants and their habitats may vary at different phases of the invasion process and depend on the phenotypic plasticity or local adaptations of each species. In this study, we investigated whether habitat changes during the invasion process are related to variations in the physiological traits (allelopathic properties) and genetic differentiation of daisy fleabane (Erigeron annuus (L.) Pers.). E. annuus is a winter annual invasive species that originated in North America and is now distributed throughout Europe. Genetic and genotypic diversity analyses were performed for 37 populations of E. annuus based on inter simple sequence repeat (ISSR) polymorphisms. In total, 684 plants were analyzed; 342 were from stable habitats and 342 were from disturbed habitats. The genetic differences among the populations from the different habitats were studied using a Bayesian cluster analysis and an analysis of molecular variance (AMOVA) and by calculating the genetic and genotypic diversity parameters. A germination test using the juglone index was employed to examine the potential allelopathic properties of the plants from the different habitats. Bayesian cluster analysis, AMOVA and allelopathic effects evaluation revealed differences in the allelopathic potential and genetic structure of the E. annuus populations from the disturbed and stable habitats. This differentiation of populations could be associated with founder effects or with different selection pressures among habitats. |
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| Keywords: | Invasive species ISSR markers Population genetic structure Invasion phases Allelopathy |
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