Fertility depression among cheese‐makingPenicillium roquefortistrains suggests degeneration during domestication

Autor: Dominik Begerow, Tatiana Giraud, Tanja Rollnik, Jeanne Ropars, Alodie Snirc, Emilie Dumas, Sandrine Lacoste, Ying-Chu Lo, Manuela López-Villavicencio, Joëlle Dupont
Přispěvatelé: Université Paris-Sud - Paris 11 (UP11), Ruhr-Universität Bochum [Bochum], Centre national de la recherche scientifique et technologique (CENAREST), AgroParisTech, Ecologie Systématique et Evolution (ESE), Université Paris-Sud - Paris 11 (UP11)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS), Département Systématique et Évolution, Muséum national d'Histoire naturelle (MNHN), Centre National de la Recherche Scientifique (CNRS), Univ. Paris-Sud
Rok vydání: 2016
Předmět:
Gene Flow
0106 biological sciences
0301 basic medicine
reproductive isolation
media_common.quotation_subject
Adaptation
Biological
species criteria
Fertility
postzygotic
010603 evolutionary biology
01 natural sciences
Asexuality
Gene flow
Domestication
03 medical and health sciences
Cheese
Purifying selection
Genetics
[SDV.MP.MYC]Life Sciences [q-bio]/Microbiology and Parasitology/Mycology
Ecology
Evolution
Behavior and Systematics
media_common
2. Zero hunger
biology
sterility
[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE]
Penicillium
Penicillium roqueforti
Original Articles
Reproductive isolation
biology.organism_classification
Speciation
prezygotic
030104 developmental biology
speciation
Microscopy
Electron
Scanning
Original Article
sex evolution
Adaptation
General Agricultural and Biological Sciences
Zdroj: Evolution-International Journal of Organic Evolution
Evolution-International Journal of Organic Evolution, Wiley, 2016, 70 (9), pp.2099-2109. ⟨10.1111/evo.13015⟩
Evolution; International Journal of Organic Evolution
ISSN: 1558-5646
0014-3820
DOI: 10.1111/evo.13015
Popis: International audience; Genetic differentiation occurs when gene flow is prevented, due to reproductive barriers or asexuality. Investigating the early barriers to gene flow is important for understanding the process of speciation. Here, we therefore investigated reproductive isolation between different genetic clusters of the fungus Penicillium roqueforti, used for maturing blue cheeses, and also occurring as food spoiler or in silage. We investigated premating and postmating fertility between and within three genetic clusters (two from cheese and one from other substrates), and we observed sexual structures under scanning electron microscopy. All intercluster types of crosses showed some fertility, suggesting that no intersterility has evolved between domesticated and wild populations despite adaptation to different environments and lack of gene flow. However, much lower fertility was found in crosses within the cheese clusters than within the noncheese cluster, suggesting reduced fertility of cheese strains, which may constitute a barrier to gene flow. Such degeneration may be due to bottlenecks during domestication and/or to the exclusive clonal replication of the strains in industry. This study shows that degeneration has occurred rapidly and independently in two lineages of a domesticated species. Altogether, these results inform on the processes and tempo of degeneration and speciation.
Databáze: OpenAIRE
Externí odkaz: