ArticleAnnals of botany2011
Apomixis is not prevalent in subnival to nival plants of the European Alps.
Article in Annals of botany, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed.
- Active Components ofMolecules (Basel, Switzerland) · 2023Article
- Geographical Parthenogenesis in Alpine and Arctic Plants.Plants (Basel, Switzerland) · 2023Review
- The Application of Flow Cytometry for Estimating Genome Size, Ploidy Level Endopolyploidy, and Reproductive Modes in Plants.Methods in molecular biology (Clifton, N.J.) · 2021Article
- Breeding system of diploid sexuals within theEcology and evolution · 2020Article
- Plant apomixis is rare in Himalayan high-alpine flora.Scientific reports · 2019Article
- Exploring Actinobacteria Associated With Rhizosphere and Endosphere of the Native Alpine Medicinal PlantFrontiers in microbiology · 2019Article
- Effects of cold treatments on fitness and mode of reproduction in the diploid and polyploid alpine plant Ranunculus kuepferi (Ranunculaceae).Annals of botany · 2018Article
- What does the geography of parthenogenesis teach us about sex?Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2016Review
- Correlations of polyploidy and apomixis with elevation and associated environmental gradients in an alpine plant.AoB PLANTS · 2016Article
- Geographical parthenogenesis and population genetic structure in the alpine species Ranunculus kuepferi (Ranunculaceae).Heredity · 2013Article
- Prospects and limits of the flow cytometric seed screen--insights from Potentilla sensu lato (Potentilleae, Rosaceae).The New phytologist · 2013Article
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9 authors.
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Abstract
BACKGROUND AND
aimsHigh alpine environments are characterized by short growing seasons, stochastic climatic conditions and fluctuating pollinator visits. These conditions are rather unfavourable for sexual reproduction of flowering plants. Apomixis, asexual reproduction via seed, provides reproductive assurance without the need of pollinators and potentially accelerates seed development. Therefore, apomixis is expected to provide selective advantages in high-alpine biota. Indeed, apomictic species occur frequently in the subalpine to alpine grassland zone of the European Alps, but the mode of reproduction of the subnival to nival flora was largely unknown.
methodsThe mode of reproduction in 14 species belonging to seven families was investigated via flow cytometric seed screen. The sampling comprised 12 species typical for nival to subnival plant communities of the European Alps without any previous information on apomixis (Achillea atrata, Androsace alpina, Arabis caerulea, Erigeron uniflorus, Gnaphalium hoppeanum, Leucanthemopsis alpina, Oxyria digyna, Potentilla frigida, Ranunculus alpestris, R. glacialis, R. pygmaeus and Saxifraga bryoides), and two high-alpine species with apomixis reported from other geographical areas (Leontopodium alpinum and Potentilla crantzii). KEY
resultsFlow cytometric data were clearly interpretable for all 46 population samples, confirming the utility of the method for broad screenings on non-model organisms. Formation of endosperm in all species of Asteraceae was documented. Ratios of endosperm : embryo showed pseudogamous apomixis for Potentilla crantzii (ratio approx. 3), but sexual reproduction for all other species (ratios approx. 1·5).
conclusionsThe occurrence of apomixis is not correlated to high altitudes, and cannot be readily explained by selective forces due to environmental conditions. The investigated species have probably other adaptations to high altitudes to maintain reproductive assurance via sexuality. We hypothesize that shifts to apomixis are rather connected to frequencies of polyploidization than to ecological conditions.
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