Contrasting Genetic Footprints among Saharan Olive Populations: Potential Causes and Conservation Implications
| Autor: | Océane Gorrilliot, Benoit Génot, Fabien Anthelme, Djamel Baali-Cherif, Guillaume Besnard, Ahmed El Bakkali, Pauline Raimondeau |
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| Přispěvatelé: | Evolution et Diversité Biologique (EDB), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, UMR APCRPG, Institut National de la Recherche Agronomique du Maroc (INRA), Botanique et Modélisation de l'Architecture des Plantes et des Végétations (UMR AMAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Laboratoire de Recherches sur les Zones Arides (LRZA), Faculty of Biology, Université des Sciences et de la Technologie Houari Boumediene [Alger] (USTHB), ANR-10-LABX-0025,CEBA,CEnter of the study of Biodiversity in Amazonia(2010), ANR-10-LABX-0041,TULIP,Towards a Unified theory of biotic Interactions: the roLe of environmental(2010), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Institut national de la recherche agronomique [Maroc] (INRA Maroc), Université des Sciences et de la Technologie Houari Boumediene = University of Sciences and Technology Houari Boumediene [Alger] (USTHB) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Mediterranean climate Laperrine's olive Laperrine’s olive Range (biology) Population isolation by distance Plant Science Biology [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy 010603 evolutionary biology 01 natural sciences Article microsatellites Nucleotide diversity Gene flow [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems education Ecology Evolution Behavior and Systematics Isolation by distance education.field_of_study Genetic diversity Habitat fragmentation Ecology Botany plastid DNA 15. Life on land [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics wild olive genetic resources dry area Sahara desert QK1-989 [SDE.BE]Environmental Sciences/Biodiversity and Ecology gene flow seed and pollen dispersal 010606 plant biology & botany |
| Zdroj: | Plants Volume 10 Issue 6 Plants, Vol 10, Iss 1207, p 1207 (2021) Plants, MDPI, 2021, 10 (6), ⟨10.3390/plants10061207⟩ PubMed Central Hal-Diderot DOAJ-Articles ZENODO Mémoires en Sciences de l'Information et de la Communication HAL-IRD Hyper Article en Ligne Multidisciplinary Digital Publishing Institute ORCID Microsoft Academic Graph Plants, 2021, 10 (6), ⟨10.3390/plants10061207⟩ |
| ISSN: | 2223-7747 |
| DOI: | 10.3390/plants10061207 |
| Popis: | The Laperrine’s olive is endemic to the Saharan Mountains. Adapted to arid environments, it may constitute a valuable genetic resource to improve water-stress tolerance in the cultivated olive. However, limited natural regeneration coupled with human pressures make it locally endangered in Central Sahara. Understanding past population dynamics is thus crucial to define management strategies. Nucleotide sequence diversity was first investigated on five nuclear genes and compared to the Mediterranean and African olives. These data confirm that the Laperrine’s olive has a strong affinity with the Mediterranean olive, but it shows lower nucleotide diversity than other continental taxa. To investigate gene flows mediated by seeds and pollen, polymorphisms from nuclear and plastid microsatellites from 383 individuals from four Saharan massifs were analyzed. A higher genetic diversity in Ahaggar (Hoggar, Algeria) suggests that this population has maintained over the long term a larger number of individuals than other massifs. High-to-moderate genetic differentiation between massifs confirms the role of desert barriers in limiting gene flow. Yet contrasting patterns of isolation by distance were observed within massifs, and also between plastid and nuclear markers, stressing the role of local factors (e.g., habitat fragmentation, historical range shift) in seed and pollen dispersal. Implications of these results in the management of the Laperrine’s olive genetic resources are discussed. |
| Databáze: | OpenAIRE |
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