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Lavaut E, Valero M, Mauger S, Guillemin ML, Destombe C, Dufay M. Sexual selection in seaweed? Testing Bateman's principles in the red alga Gracilaria gracilis. Proc Biol Sci 2023; 290:20231668. [PMID: 37700657 PMCID: PMC10498045 DOI: 10.1098/rspb.2023.1668] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 08/21/2023] [Indexed: 09/14/2023] Open
Abstract
In anisogamous species, sexual selection is expected to be stronger in males. Bateman's principles state that the variance in (i) reproductive and (ii) mating success is greater for males, and (iii) the relationship between reproductive success and mating success (the Bateman gradient) is also stronger for males than for females. Sexual selection, based on Bateman's principles, has been demonstrated in animals and some angiosperms, but never in a seaweed. Here we focus on the oogamous haploid-diploid rhodophyte Gracilaria gracilis in which previous studies have shown evidence for non-random mating, suggesting the existence of male-male competition and female choice. We estimated mating and reproductive success using paternity analyses in a natural population where up to 92% of fertilizations occurred between partners of that population. The results show that the variance in mating success is significantly greater in males than in females and that the Bateman gradient is positive only in males. Distance to female partners also explains a minor part of the variance in male mating success. Although there is no evidence for sexual dimorphism, our study supports the hypothesis that sexual selection occurs in G. gracilis, probably on male traits, even if we cannot observe, characterize or quantify them yet.
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Affiliation(s)
- E. Lavaut
- IRL EBEA 3614, Evolutionary Biology and Ecology of Algae, CNRS, Sorbonne Université, Pontificia Universidad Católica de Chile, Universidad Austral de Chile, Station Biologique de Roscoff, CS 90074, Place Georges Teissier, 29688 Roscoff cedex, France
| | - M. Valero
- IRL EBEA 3614, Evolutionary Biology and Ecology of Algae, CNRS, Sorbonne Université, Pontificia Universidad Católica de Chile, Universidad Austral de Chile, Station Biologique de Roscoff, CS 90074, Place Georges Teissier, 29688 Roscoff cedex, France
| | - S. Mauger
- IRL EBEA 3614, Evolutionary Biology and Ecology of Algae, CNRS, Sorbonne Université, Pontificia Universidad Católica de Chile, Universidad Austral de Chile, Station Biologique de Roscoff, CS 90074, Place Georges Teissier, 29688 Roscoff cedex, France
| | - M. L. Guillemin
- IRL EBEA 3614, Evolutionary Biology and Ecology of Algae, CNRS, Sorbonne Université, Pontificia Universidad Católica de Chile, Universidad Austral de Chile, Station Biologique de Roscoff, CS 90074, Place Georges Teissier, 29688 Roscoff cedex, France
- Núcleo Milenio MASH, Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | - C. Destombe
- IRL EBEA 3614, Evolutionary Biology and Ecology of Algae, CNRS, Sorbonne Université, Pontificia Universidad Católica de Chile, Universidad Austral de Chile, Station Biologique de Roscoff, CS 90074, Place Georges Teissier, 29688 Roscoff cedex, France
| | - M. Dufay
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France
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Poljak I, Vahčić N, Liber Z, Tumpa K, Pintar V, Zegnal I, Vidaković A, Valković B, Kajba D, Idžojtić M. Morphological and Chemical Diversity and Antioxidant Capacity of the Service Tree ( Sorbus domestica L.) Fruits from Two Eco-Geographical Regions. PLANTS 2021; 10:plants10081691. [PMID: 34451736 PMCID: PMC8399663 DOI: 10.3390/plants10081691] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/12/2021] [Accepted: 08/14/2021] [Indexed: 11/24/2022]
Abstract
Service tree, Sorbus domestica L., is a rare and neglected wild fruit tree species of southern and central Europe. Being distributed in different eco-geographical regions, with fragmented and low-density populations, S. domestica represents an interesting model case for investigating patterns of within- and between-population diversity at geographical and environmental scales. This study aimed to analyze the proximate composition, antioxidant activity, and morphometric fruit characteristics. We examined the diversity and population divergences of 49 S. domestica individuals originating from seven populations across continental and Mediterranean eco-geographical regions. In addition, tests of isolation by distance and environment were performed to detect the magnitude of divergence explained by geographic and environmental variables. Significant differences between the studied populations were found in almost all of the studied morphometric and chemical fruit characteristics. The studied service tree populations were characterized by high phenotypic variation despite the low number of trees per population. Model-based population structure analysis using morphometric and chemical fruit characteristics revealed three groups of service tree populations. We concluded that non-effective pollen and seed dispersal along with genetic drift and specific environmental factors resulted in a distinct phenotype with a specific chemical composition in the isolated island population. In addition, a pattern of isolation by the environment was revealed. We infer that morphological and chemical differences between the studied populations in the true service tree from different eco-geographical regions were mediated by adaptation to the specific environmental conditions.
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Affiliation(s)
- Igor Poljak
- Faculty of Forestry and Wood Technology, University of Zagreb, Svetošimunska Cesta 23, 10000 Zagreb, Croatia; (K.T.); (A.V.); (D.K.); (M.I.)
- Correspondence: ; Tel.: +385-1-235-2547
| | - Nada Vahčić
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia; (N.V.); (B.V.)
| | - Zlatko Liber
- Department of Biology, Faculty of Science, University of Zagreb, Marulićev Trg 9a, 10000 Zagreb, Croatia;
- Centre of Excellence for Biodiversity and Molecular Plant Breeding, Svetošimunska Cesta 25, 10000 Zagreb, Croatia
| | - Katarina Tumpa
- Faculty of Forestry and Wood Technology, University of Zagreb, Svetošimunska Cesta 23, 10000 Zagreb, Croatia; (K.T.); (A.V.); (D.K.); (M.I.)
| | - Valentino Pintar
- Ministry of Economy and Sustainable Development, Institute for Environment and Nature, Nature Sector, Radnička Cesta 80, 10000 Zagreb, Croatia;
| | - Ivana Zegnal
- Croatian Forest Research Institute, Cvjetno Naselje 41, 10450 Jastrebarsko, Croatia;
| | - Antonio Vidaković
- Faculty of Forestry and Wood Technology, University of Zagreb, Svetošimunska Cesta 23, 10000 Zagreb, Croatia; (K.T.); (A.V.); (D.K.); (M.I.)
| | - Bernarda Valković
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia; (N.V.); (B.V.)
| | - Davorin Kajba
- Faculty of Forestry and Wood Technology, University of Zagreb, Svetošimunska Cesta 23, 10000 Zagreb, Croatia; (K.T.); (A.V.); (D.K.); (M.I.)
| | - Marilena Idžojtić
- Faculty of Forestry and Wood Technology, University of Zagreb, Svetošimunska Cesta 23, 10000 Zagreb, Croatia; (K.T.); (A.V.); (D.K.); (M.I.)
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Huang R, Zhang ZD, Wang Y, Wang YQ. Genetic variation and genetic structure within metapopulations of two closely related selfing and outcrossing Zingiber species (Zingiberaceae). AOB PLANTS 2021; 13:plaa065. [PMID: 33442464 PMCID: PMC7788390 DOI: 10.1093/aobpla/plaa065] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 11/30/2020] [Indexed: 05/31/2023]
Abstract
Habitat fragmentation strongly affects the genetic diversity of plant populations, and this has always attracted much research interest. Although numerous studies have investigated the effects of habitat fragmentation on the genetic diversity of plant populations, fewer studies have compared species with contrasting breeding systems while accounting for phylogenetic distance. Here, we compare the levels of genetic diversity and differentiation within and among subpopulations in metapopulations (at fine-scale level) of two closely related Zingiber species, selfing Zingiber corallinum and outcrossing Zingiber nudicarpum. Comparisons of the genetic structure of species from unrelated taxa may be confounded by the effects of correlated ecological traits or/and phylogeny. Thus, we possibly reveal the differences in genetic diversity and spatial distribution of genetic variation within metapopulations that relate to mating systems. Compared to outcrossing Z. nudicarpum, the subpopulation genetic diversity in selfing Z. corallinum was significantly lower, but the metapopulation genetic diversity was not different. Most genetic variation resided among subpopulations in selfing Z. corallinum metapopulations, while a significant portion of variation resided either within or among subpopulations in outcrossing Z. nudicarpum, depending on whether the degree of subpopulation isolation surpasses the dispersal ability of pollen and seed. A stronger spatial genetic structure appeared within subpopulations of selfing Z. corallinum potentially due to restricted pollen flow and seed dispersal. In contrast, a weaker genetic structure was apparent in subpopulations of outcrossing Z. nudicarpum most likely caused by extensive pollen movement. Our study shows that high genetic variation can be maintained within metapopulations of selfing Zingiber species, due to increased genetic differentiation intensified primarily by the stochastic force of genetic drift among subpopulations. Therefore, maintenance of natural variability among subpopulations in fragmented areas is key to conserve the full range of genetic diversity of selfing Zingiber species. For outcrossing Zingiber species, maintenance of large populations is an important factor to enhance genetic diversity. Compared to outcrossing Z. nudicarpum, the subpopulation genetic diversity in selfing Z. corallinum was significantly lower, but the metapopulation genetic diversity did not differ. Most genetic variation resided among subpopulations in selfing Z. corallinum metapopulations, while a significant portion of variation resided either within or among subpopulations in outcrossing Z. nudicarpum, depending on whether the degree of subpopulation isolation surpasses the dispersal ability of pollen and seed. Our study shows that selfing Z. corallinum could maintain high genetic diversity through differentiation intensified primarily by the stochastic force of genetic drift among subpopulations at fine-scale level, but not local adaptation.
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Affiliation(s)
- Rong Huang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Zong-Dian Zhang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Yu Wang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Ying-Qiang Wang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Sciences, South China Normal University, Guangzhou, China
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The effects of pollen dispersal and mating pattern on inbreeding depression and hybrid vigor in Balfourodendron riedelianum (Engl.) Engl. (Rutaceae). CONSERV GENET 2020. [DOI: 10.1007/s10592-020-01250-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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5
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Nakanishi A, Takeuchi T, Ueno S, Nishimura N, Tomaru N. Spatial variation in bird pollination and its mitigating effects on the genetic diversity of pollen pools accepted by Camellia japonica trees within a population at a landscape level. Heredity (Edinb) 2019; 124:170-181. [PMID: 31485029 DOI: 10.1038/s41437-019-0262-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 08/10/2019] [Accepted: 08/12/2019] [Indexed: 01/03/2023] Open
Abstract
Bird pollination can vary spatially in response to spatial fluctuations in flowering even within plant populations. In this study, we examined the hypothesis that the spatial variation in bird pollination may induce mitigating effects, which maintains or increases genetic diversity of pollen pools at local sites with low flowering densities. To test this hypothesis, we analyzed the landscape-level genetic effects within a population of Camellia japonica on the pollen pools accepted by individuals in two reproductive years by using genotypes at eight microsatellite loci of 1323 seeds from 19 seed parents. Regression analyses using the quadratic models of correlated paternity between pollen pools against spatial distances between the seed-parent pairs revealed not only local pollination but also some amount of long-distance pollen dispersal. The genetic diversity of pollen pools accepted by seed parents tended to be negatively related to the densities of flowering individuals near the seed parents during winter (when the effective pollination of C. japonica is mediated mostly by Zosterops japonica). We show that the low density of flowering individuals may induce the expansion of the foraging areas of Z. japonica and consequently increase the genetic diversity of pollen pools. This spatial variation in bird pollination may induce the mitigating effects on the C. japonica population. The comparisons between the two study years indicate that the overall pattern of bird pollination and the genetic effects described here, including the mitigating effects, may be stable over time.
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Affiliation(s)
- Atsushi Nakanishi
- Hokkaido Research Center, Forestry and Forest Products Research Institute, Forest Research and Management Organization, 7 Hitsujigaoka, Toyohira-ku, Sapporo, 062-8516, Japan
| | - Tomoe Takeuchi
- Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan.,Forestry Department, Saku Regional Development Bureau, Nagano Prefectural Government, 65-1 Atobe, Saku, Nagano, 385-0054, Japan
| | - Saneyoshi Ueno
- Department of Forest Molecular Genetics and Biotechnology, Forestry and Forest Products Research Institute, Forest Research and Management Organization, 1 Matsunosato, Tsukuba, Ibaraki, 305-8687, Japan
| | - Naoyuki Nishimura
- Faculty of Social and Information Studies, Gunma University, 4-2 Aramaki-machi, Maebashi, Gunma, 371-8510, Japan
| | - Nobuhiro Tomaru
- Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan.
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6
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Stepping stones or stone dead? Fecundity, pollen dispersal and mating patterns of roadside Qualea grandiflora Mart. trees. CONSERV GENET 2019. [DOI: 10.1007/s10592-019-01217-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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7
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Gleiser G, Chybicki IJ, González-Martínez SC, Aizen MA. Phenological match drives pollen-mediated gene flow in a temporally dimorphic tree. PLANT BIOLOGY (STUTTGART, GERMANY) 2018; 20:93-100. [PMID: 29063726 DOI: 10.1111/plb.12651] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 10/18/2017] [Indexed: 06/07/2023]
Abstract
Variation in flowering phenology is common in natural populations, and is expected to be, together with inter-mate distance, an important driver of effective pollen dispersal. In populations composed of plants with temporally separated sexual phases (i.e. dichogamous or heterodichogamous populations), pollen-mediated gene flow is assumed to reflect phenological overlap between complementary sexual phases. In this study, we conducted paternity analyses to test this hypothesis in the temporally dimorphic tree Acer opalus. We performed spatially explicit analyses based on categorical and fractional paternity assignment, and included tree size, pair-wise genetic relatedness and morph type as additional predictors. Because differences between morphs in flowering phenology may also influence pollination distances, we modelled separate pollen dispersal kernels for the two morphs. Extended phenological overlap between male and female phases (mainly associated with inter-morph crosses) resulted in higher siring success after accounting for the effects of genetic relatedness, morph type and tree size, while reduced phenological overlap (mainly associated with intra-morph crosses) resulted in longer pollination distances achieved. Siring success also increased in larger trees. Mating patterns could not be predicted by phenology alone. However, as heterogeneity in flowering phenology was the single morph-specific predictor of siring success, it is expected to be key in maintaining the temporal dimorphism in A. opalus, by promoting not only a prevalent pattern of inter-morph mating, but also long-distance pollination resulting from intra-morph mating events.
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Affiliation(s)
- G Gleiser
- Laboratorio Ecotono, INIBIOMA, CONICET-Universidad Nacional del Comahue, Bariloche, Argentina
| | - I J Chybicki
- Department of Genetics, Kazimierz Wielki University, Bydgoszcz, Poland
| | | | - M A Aizen
- Laboratorio Ecotono, INIBIOMA, CONICET-Universidad Nacional del Comahue, Bariloche, Argentina
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8
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Genetic Diversity and Its Spatial Distribution in Self-Regenerating Norway Spruce and Scots Pine Stands. FORESTS 2017. [DOI: 10.3390/f8120470] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Krauss SL, Phillips RD, Karron JD, Johnson SD, Roberts DG, Hopper SD. Novel Consequences of Bird Pollination for Plant Mating. TRENDS IN PLANT SCIENCE 2017; 22:395-410. [PMID: 28412035 DOI: 10.1016/j.tplants.2017.03.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 02/12/2017] [Accepted: 03/07/2017] [Indexed: 06/07/2023]
Abstract
Pollinator behaviour has profound effects on plant mating. Pollinators are predicted to minimise energetic costs during foraging bouts by moving between nearby flowers. However, a review of plant mating system studies reveals a mismatch between behavioural predictions and pollen-mediated gene dispersal in bird-pollinated plants. Paternal diversity of these plants is twice that of plants pollinated solely by insects. Comparison with the behaviour of other pollinator groups suggests that birds promote pollen dispersal through a combination of high mobility, limited grooming, and intra- and interspecies aggression. Future opportunities to test these predictions include seed paternity assignment following pollinator exclusion experiments, single pollen grain genotyping, new tracking technologies for small pollinators, and motion-triggered cameras and ethological experimentation for quantifying pollinator behaviour.
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Affiliation(s)
- Siegfried L Krauss
- Kings Park and Botanic Garden, Botanic Gardens and Parks Authority, Fraser Avenue, Kings Park, WA 6005, Australia; School of Plant Biology, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia.
| | - Ryan D Phillips
- Kings Park and Botanic Garden, Botanic Gardens and Parks Authority, Fraser Avenue, Kings Park, WA 6005, Australia; School of Plant Biology, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia; Ecology and Evolution, Research School of Biology, The Australian National University, Canberra, ACT 2601, Australia
| | - Jeffrey D Karron
- Department of Biological Sciences, PO Box 413, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA
| | - Steven D Johnson
- School of Life Sciences, University of KwaZulu-Natal, Private Bag X01, Scottsville, Pietermaritzburg 3209, South Africa
| | - David G Roberts
- Kings Park and Botanic Garden, Botanic Gardens and Parks Authority, Fraser Avenue, Kings Park, WA 6005, Australia; Centre of Excellence in Natural Resource Management and School of Plant Biology, University of Western Australia, 35 Stirling Terrace, Albany, WA 6330, Australia
| | - Stephen D Hopper
- Centre of Excellence in Natural Resource Management and School of Plant Biology, University of Western Australia, 35 Stirling Terrace, Albany, WA 6330, Australia
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Hoeltgebaum MP, Londoño DMM, Lando AP, dos Reis MS. Reproductive Strategy of the Polyploid Species Varronia curassavica Jacq. in Restinga Environment. J Hered 2017; 108:424-430. [DOI: 10.1093/jhered/esx024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 03/14/2017] [Indexed: 11/13/2022] Open
Affiliation(s)
- Marcia Patricia Hoeltgebaum
- From the Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Departamento de Fitotecnia, Rodovia Admar Gonzaga, 1346, Itacorubi, Florianópolis/SC CEP 88.034-001, Brazil (Hoeltgebaum, Londoño, Lando, and Reis) and Núcleo de Pesquisa em Florestas Tropicais, Universidade Federal de Santa Catarina, Rodovia Admar Gonzaga, 1346, Itacorubi, Florianópolis/SC CEP 88.034-001, Brazil (Hoelt
| | - Diana Marcela Morales Londoño
- From the Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Departamento de Fitotecnia, Rodovia Admar Gonzaga, 1346, Itacorubi, Florianópolis/SC CEP 88.034-001, Brazil (Hoeltgebaum, Londoño, Lando, and Reis) and Núcleo de Pesquisa em Florestas Tropicais, Universidade Federal de Santa Catarina, Rodovia Admar Gonzaga, 1346, Itacorubi, Florianópolis/SC CEP 88.034-001, Brazil (Hoelt
| | - Ana Paula Lando
- From the Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Departamento de Fitotecnia, Rodovia Admar Gonzaga, 1346, Itacorubi, Florianópolis/SC CEP 88.034-001, Brazil (Hoeltgebaum, Londoño, Lando, and Reis) and Núcleo de Pesquisa em Florestas Tropicais, Universidade Federal de Santa Catarina, Rodovia Admar Gonzaga, 1346, Itacorubi, Florianópolis/SC CEP 88.034-001, Brazil (Hoelt
| | - Maurício Sedrez dos Reis
- From the Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Departamento de Fitotecnia, Rodovia Admar Gonzaga, 1346, Itacorubi, Florianópolis/SC CEP 88.034-001, Brazil (Hoeltgebaum, Londoño, Lando, and Reis) and Núcleo de Pesquisa em Florestas Tropicais, Universidade Federal de Santa Catarina, Rodovia Admar Gonzaga, 1346, Itacorubi, Florianópolis/SC CEP 88.034-001, Brazil (Hoelt
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Exploring and conserving a “microcosm”: whole-population genetic characterization within a refugial area of the endemic, relict conifer Picea omorika. CONSERV GENET 2017. [DOI: 10.1007/s10592-017-0926-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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12
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Nora S, Aparicio A, Albaladejo RG. High Correlated Paternity Leads to Negative Effects on Progeny Performance in Two Mediterranean Shrub Species. PLoS One 2016; 11:e0166023. [PMID: 27835658 PMCID: PMC5106039 DOI: 10.1371/journal.pone.0166023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 10/23/2016] [Indexed: 11/24/2022] Open
Abstract
Anthropogenic habitat deterioration can promote changes in plant mating systems that subsequently may affect progeny performance, thereby conditioning plant recruitment for the next generation. However, very few studies yet tested mating system parameters other than outcrossing rates; and the direct effects of the genetic diversity of the pollen received by maternal plants (i.e. correlated paternity) has often been overlooked. In this study, we investigated the relation between correlated paternity and progeny performance in two common Mediterranean shrubs, Myrtus communis and Pistacia lentiscus. To do so, we collected open-pollinated progeny from selected maternal plants, calculated mating system parameters using microsatellite genotyping and conducted sowing experiments under greenhouse and field conditions. Our results showed that some progeny fitness components were negatively affected by the high correlated paternity of maternal plants. In Myrtus communis, high correlated paternity had a negative effect on the proportion and timing of seedling emergence in the natural field conditions and in the greenhouse sowing experiment, respectively. In Pistacia lentiscus, seedling emergence time under field conditions was also negatively influenced by high correlated paternity and a progeny survival analysis in the field experiment showed greater mortality of seedlings from maternal plants with high correlated paternity. Overall, we found effects of correlated paternity on the progeny performance of Myrtus communis, a self-compatible species. Further, we also detected effects of correlated paternity on the progeny emergence time and survival in Pistacia lentiscus, an obligate outcrossed species. This study represents one of the few existing empirical examples which highlight the influence that correlated paternity may exert on progeny performance in multiple stages during early seedling growth.
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Affiliation(s)
- Sofia Nora
- Departmento de Biología Vegetal y Ecología, Universidad de Sevilla, Seville, Spain
- * E-mail:
| | - Abelardo Aparicio
- Departmento de Biología Vegetal y Ecología, Universidad de Sevilla, Seville, Spain
| | - Rafael G. Albaladejo
- Departmento de Biología Vegetal y Ecología, Universidad de Sevilla, Seville, Spain
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13
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Warner PA, Willis BL, Oppen MJH. Sperm dispersal distances estimated by parentage analysis in a brooding scleractinian coral. Mol Ecol 2016; 25:1398-415. [DOI: 10.1111/mec.13553] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 12/27/2015] [Accepted: 01/04/2016] [Indexed: 12/25/2022]
Affiliation(s)
- Patricia A. Warner
- AIMS@JCU and Australian Research Council (ARC) Centre of Excellence for Coral Reef Studies James Cook University Townsville Qld 4811 Australia
- College of Marine and Environmental Sciences James Cook University Townsville Qld 4811 Australia
| | - Bette L. Willis
- AIMS@JCU and Australian Research Council (ARC) Centre of Excellence for Coral Reef Studies James Cook University Townsville Qld 4811 Australia
- College of Marine and Environmental Sciences James Cook University Townsville Qld 4811 Australia
| | - Madeleine J. H. Oppen
- AIMS@JCU and Australian Research Council (ARC) Centre of Excellence for Coral Reef Studies James Cook University Townsville Qld 4811 Australia
- Australian Institute of Marine Science PMB3, Townsville MC Townsville Qld 4810 Australia
- School of BioSciences The University of Melbourne Parkville Vic. 23010 Australia
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14
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Sork VL. Gene flow and natural selection shape spatial patterns of genes in tree populations: implications for evolutionary processes and applications. Evol Appl 2016; 9:291-310. [PMID: 27087853 PMCID: PMC4780383 DOI: 10.1111/eva.12316] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Accepted: 08/02/2015] [Indexed: 02/03/2023] Open
Abstract
A central question in evolutionary biology is how gene flow and natural selection shape geographic patterns of genotypic and phenotypic variation. My overall research program has pursued this question in tree populations through complementary lines of inquiry. First, through studies of contemporary pollen and seed movement, I have studied how limited gene movement creates fine-scale genetic structure, while long-distance gene flow promotes connectivity. My collaborators and I have provided new tools to study these processes at a landscape scale as well as statistical tests to determine whether changes in landscape conditions or dispersal vectors affect gene movement. Second, my research on spatial patterns of genetic variation has investigated the interacting impacts of geography and climate on gene flow and selection. Third, using next-generation genomic tools, I am now studying genetic variation on the landscape to find initial evidence of climate-associated local adaptation and epigenetic variation to explore its role in plant response to the climate. By integrating these separate lines of inquiry, this research provides specific insight into real-world mechanisms shaping evolution in tree populations and potential impacts of landscape transformation and climate change on these populations, with the prospective goal of contributing to their management and conservation.
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Affiliation(s)
- Victoria L. Sork
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaLos AngelesCAUSA
- Institute of Environment and SustainabilityUniversity of CaliforniaLos AngelesCAUSA
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15
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Stabilizing selection on nectar concentration in wild Petunia axillaris, as revealed by genetic analysis of pollen dispersal. Evol Ecol 2014. [DOI: 10.1007/s10682-014-9714-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Tsuchimatsu T, Shimizu KK. Effects of pollen availability and the mutation bias on the fixation of mutations disabling the male specificity of self-incompatibility. J Evol Biol 2013; 26:2221-32. [PMID: 23980527 DOI: 10.1111/jeb.12219] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Revised: 06/21/2013] [Accepted: 06/24/2013] [Indexed: 01/19/2023]
Abstract
The evolution of self-compatibility (SC) by the loss of self-incompatibility (SI) is regarded as one of the most frequent transitions in flowering plants. SI systems are generally characterized by specific interactions between the male and female specificity genes encoded at the S-locus. Recent empirical studies have revealed that the evolution of SC is often driven by male SC-conferring mutations at the S-locus rather than by female mutations. In this study, using a forward simulation model, we compared the fixation probabilities of male vs. female SC-conferring mutations at the S-locus. We explicitly considered the effects of pollen availability in the population and bias in the occurrence of SC-conferring mutations on the male and female specificity genes. We found that male SC-conferring mutations were indeed more likely to be fixed than were female SC-conferring mutations in a wide range of parameters. This pattern was particularly strong when pollen availability was relatively high. Under such a condition, even if the occurrence of mutations was biased strongly towards the female specificity gene, male SC-conferring mutations were much more often fixed. Our study demonstrates that fixation probabilities of those two types of mutation vary strongly depending on ecological and genetic conditions, although both types result in the same evolutionary consequence-the loss of SI.
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Affiliation(s)
- T Tsuchimatsu
- Institute of Evolutionary Biology and Environmental Studies, Institute of Plant Biology & Zurich-Basel Plant Science Center, University of Zurich, Zurich, Switzerland; Gregor Mendel Institute, Austrian Academy of Sciences, Vienna, Austria
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17
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Gauzere J, Klein EK, Oddou-Muratorio S. Ecological determinants of mating system within and between three Fagus sylvatica populations along an elevational gradient. Mol Ecol 2013; 22:5001-15. [PMID: 23952125 DOI: 10.1111/mec.12435] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 06/21/2013] [Accepted: 06/24/2013] [Indexed: 11/26/2022]
Abstract
Studies addressing the variation of mating system between plant populations rarely account for the variability of these parameters between individuals within populations, although this variability is often non-negligible. Here, we propose a new direct method based on paternity analyses (Mixed Effect Mating Model) to estimate individual migration (mi ) and selfing rates (si ) together with the pollen dispersal kernel. Using this method and the KINDIST approach, we investigated the variation of mating system parameters within and between three populations of Fagus sylvatica along an elevational gradient. Among the mother trees, si varied from 0% to 48%, mi varied from 12% to 86% and the effective number of pollen donors (Nepi ) varied from 2 to 364. The mating patterns differed along the gradient, the top population showing higher m and lower s, and a trend to higher Nep than the bottom populations. The phenological lag shaped long-distance pollen flow both within population (by increasing mi at mother-tree level) and between populations (by increasing m at high elevation). Rather than the mate density, the canopy density was detected as a major mating system determinant within population; it acted as a barrier to pollen flow, decreasing the proportion of long-distance pollen flow and increasing si . Overall, the effects of ecological factors on mating system were not the same within vs. between populations across the gradient, and these factors also differed from those traditionally found to shape variation at range-wide scale, highlighting the interest of multiscale approaches.
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Affiliation(s)
- Julie Gauzere
- INRA, UR629 Ecologie des Forêts Méditerranéennes (URFM), F-84914, Avignon, France; INRA, UR546 Biostatistique et Processus Spatiaux (BioSP), F-84914, Avignon, France
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18
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Ludwig S, Robertson A, Rich TCG, Djordjević M, Cerović R, Houston L, Harris SA, Hiscock SJ. Breeding systems, hybridization and continuing evolution in Avon Gorge Sorbus. ANNALS OF BOTANY 2013; 111:563-75. [PMID: 23408832 PMCID: PMC3605949 DOI: 10.1093/aob/mct013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Accepted: 12/17/2012] [Indexed: 05/10/2023]
Abstract
BACKGROUND AND AIMS Interspecific hybridization and polyploidy are key processes in plant evolution and are responsible for ongoing genetic diversification in the genus Sorbus (Rosaceae). The Avon Gorge, Bristol, UK, is a world 'hotspot' for Sorbus diversity and home to diploid sexual species and polyploid apomictic species. This research investigated how mating system variation, hybridization and polyploidy interact to generate this biological diversity. METHODS Mating systems of diploid, triploid and tetraploid Sorbus taxa were analysed using pollen tube growth and seed set assays from controlled pollinations, and parent-offspring genotyping of progeny from open and manual pollinations. KEY RESULTS Diploid Sorbus are outcrossing and self-incompatible (SI). Triploid taxa are pseudogamous apomicts and genetically invariable, but because they also display self-incompatibility, apomictic seed set requires pollen from other Sorbus taxa - a phenomenon which offers direct opportunities for hybridization. In contrast tetraploid taxa are pseudogamous but self-compatible, so do not have the same obligate requirement for intertaxon pollination. CONCLUSIONS The mating inter-relationships among Avon Gorge Sorbus taxa are complex and are the driving force for hybridization and ongoing genetic diversification. In particular, the presence of self-incompatibility in triploid pseudogamous apomicts imposes a requirement for interspecific cross-pollination, thereby facilitating continuing diversification and evolution through rare sexual hybridization events. This is the first report of naturally occurring pseudogamous apomictic SI plant populations, and we suggest that interspecific pollination, in combination with a relaxed endosperm balance requirement, is the most likely route to the persistence of these populations. We propose that Avon Gorge Sorbus represents a model system for studying the establishment and persistence of SI apomicts in natural populations.
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Affiliation(s)
- Shanna Ludwig
- School of Biological Sciences, University of Bristol, Bristol, UK
| | - Ashley Robertson
- School of Biological Sciences, University of Bristol, Bristol, UK
| | - Timothy C. G. Rich
- Department of Biodiversity & Systematic Biology, National Museum of Wales, Cardiff, UK
| | | | | | - Libby Houston
- School of Biological Sciences, University of Bristol, Bristol, UK
| | | | - Simon J. Hiscock
- School of Biological Sciences, University of Bristol, Bristol, UK
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19
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Pannell JR, Labouche AM. The incidence and selection of multiple mating in plants. Philos Trans R Soc Lond B Biol Sci 2013; 368:20120051. [PMID: 23339242 DOI: 10.1098/rstb.2012.0051] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Mating with more than one pollen donor, or polyandry, is common in land plants. In flowering plants, polyandry occurs when the pollen from different potential sires is distributed among the fruits of a single individual, or when pollen from more than one donor is deposited on the same stigma. Because polyandry typically leads to multiple paternity among or within fruits, it can be indirectly inferred on the basis of paternity analysis using molecular markers. A review of the literature indicates that polyandry is probably ubiquitous in plants except those that habitually self-fertilize, or that disperse their pollen in pollen packages, such as polyads or pollinia. Multiple mating may increase plants' female component by alleviating pollen limitation or by promoting competition among pollen grains from different potential sires. Accordingly, a number of traits have evolved that should promote polyandry at the flower level from the female's point of view, e.g. the prolongation of stigma receptivity or increases in stigma size. However, many floral traits, such as attractiveness, the physical manipulation of pollinators and pollen-dispensing mechanisms that lead to polyandrous pollination, have probably evolved in response to selection to promote male siring success in general, so that polyandry might often best be seen as a by-product of selection to enhance outcross siring success. In this sense, polyandry in plants is similar to geitonogamy (selfing caused by pollen transfer among flowers of the same plant), because both polyandry and geitonogamy probably result from selection to promote outcross siring success, although geitonogamy is almost always deleterious while polyandry in plants will seldom be so.
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Affiliation(s)
- John R Pannell
- Department of Ecology and Evolution, University of Lausanne, Biophore Building, Lausanne 1015, Switzerland.
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20
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Nazareno AG, Reis MSD. Linking phenology to mating system: exploring the reproductive biology of the threatened palm species Butia eriospatha. ACTA ACUST UNITED AC 2012; 103:842-52. [PMID: 23077230 DOI: 10.1093/jhered/ess070] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
The reproductive biology of the vulnerable palm species Butia eriospatha was studied to provide important information that contributes to our understanding and conservation of the species. In order to determine when and how B. erisopatha reproduces, we combined data from 7 nuclear microsatellite loci with ecological data on flowering and fruiting phenology collected between 2009 and 2011 from a population (N = 515) in the Atlantic Rainforest, Southern Brazil. Periods of flowering and fruit production were seasonal and variable across reproductive events. Mating system analyses indicate that B. eriospatha is a predominantly outcrossing species, ((m) = 0.961), since a certain degree of biparental inbreeding does occur. The species is self-compatible and reproduction may also occur by geitonogamy, indicating the ability of isolated populations to survive and persist. Open-pollinated seeds varied in relatedness, including mainly half-sibs and full-sibs. The effective population size was lower than that expected for panmictic populations. Hence, seeds for conservation programs must be collected from a large number of seed-trees to ensure an adequate effective population in the sample. The collection of germplasm is a high-priority strategy that should be employed to maintain the genetic variability that remains.
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Affiliation(s)
- Alison Gonçalves Nazareno
- Núcleo de Pesquisas em Florestas Tropicais, Federal University of Santa Catarina, CP 476, 88040-900, Florianópolis, Santa Catarina, Brazil.
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21
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Mating system parameters at hierarchical levels of fruits, individuals and populations in the Brazilian insect-pollinated tropical tree, Tabebuia roseo-alba (Bignoniaceae). CONSERV GENET 2011. [DOI: 10.1007/s10592-011-0292-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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22
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Rader R, Edwards W, Westcott DA, Cunningham SA, Howlett BG. Pollen transport differs among bees and flies in a human-modified landscape. DIVERS DISTRIB 2011. [DOI: 10.1111/j.1472-4642.2011.00757.x] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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23
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Klein EK, Carpentier FH, Oddou-Muratorio S. Estimating the variance of male fecundity from genotypes of progeny arrays: evaluation of the Bayesian forward approach. Methods Ecol Evol 2011. [DOI: 10.1111/j.2041-210x.2010.00085.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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24
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Genetic differentiation of Sorbus torminalis in Eastern Europe as determined by microsatellite markers. Biologia (Bratisl) 2010. [DOI: 10.2478/s11756-010-0082-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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DE Cauwer I, Dufay M, Cuguen J, Arnaud JF. Effects of fine-scale genetic structure on male mating success in gynodioecious Beta vulgaris ssp. maritima. Mol Ecol 2010; 19:1540-58. [PMID: 20345690 DOI: 10.1111/j.1365-294x.2010.04586.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Plant mating systems are known to influence population genetic structure because pollen and seed dispersal are often spatially restricted. However, the reciprocal outcomes of population structure on the dynamics of polymorphic mating systems have received little attention. In gynodioecious sea beet (Beta vulgaris ssp. maritima), three sexual types co-occur: females carrying a cytoplasmic male sterility (CMS) gene, hermaphrodites carrying a non-CMS cytoplasm and restored hermaphrodites that carry CMS genes and nuclear restorer alleles. This study investigated the effects of fine-scale genetic structure on male reproductive success of the two hermaphroditic forms. Our study population was strongly structured and characterized by contrasting local sex-ratios. Pollen flow was constrained over short distances and depended on local plant density. Interestingly, restored hermaphrodites sired significantly more seedlings than non-CMS hermaphrodites, despite the previous observation that the former produce pollen of lower quality than the latter. This result was explained by the higher frequency of females in the local vicinity of restored (CMS) hermaphrodites as compared to non-CMS hermaphrodites. Population structure thus strongly influences individual fitness and may locally counteract the expected effects of selection, suggesting that understanding fine scale population processes is central to predicting the evolution of gender polymorphism in angiosperms.
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Affiliation(s)
- Isabelle DE Cauwer
- Laboratoire de Génétique et Evolution des Populations Végétales, UMR CNRS 8016, Bâtiment SN2, Université des Sciences et Technologies de Lille - Lille 1, F-59655 Villeneuve d'Ascq Cedex, France.
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26
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Kamm U, Rotach P, Gugerli F, Siroky M, Edwards P, Holderegger R. Frequent long-distance gene flow in a rare temperate forest tree (Sorbus domestica) at the landscape scale. Heredity (Edinb) 2009; 103:476-82. [PMID: 19654608 DOI: 10.1038/hdy.2009.70] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Precise empirical data on current gene flow by pollen, both with respect to distance and abundance, is crucial to understand whether habitat fragments are functionally connected. Based on a large-scale inventory ( approximately 100 km(2)) in which all individuals of a naturally scattered forest tree (Sorbus domestica) were mapped, we inferred current gene flow by pollen using genetic paternity analysis. We detected an extensive network of effective pollen transfer. Although short pollen flow distances were most abundant, 10% of the assigned pollen donors were more than 2 km away from their female mating partners, and 1.8% were even at a distance of 12-16 km. This latter pollen flow shows that current long-distance gene flow over a fragmented landscape clearly occurs. Pollen dispersal was well described by a fat-tailed inverse curve. Using parentage analysis of established trees, maternally inherited chloroplast markers and diameter at breast height measurements as an indicator of individual tree age, we were able to infer regular seed dispersal distances over several hundred metres up to more than 10 km. We conclude that in temperate, insect-pollinated and animal-dispersed tree species such as S. domestica, fragmented subpopulations are functionally connected by gene flow through both pollen and seed.
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Affiliation(s)
- U Kamm
- WSL, Swiss Federal Research Institute, Birmensdorf, Switzerland.
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27
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Contemporary pollen flow, characterization of the maternal ecological neighbourhood and mating patterns in wild cherry (Prunus avium L.). Heredity (Edinb) 2009; 103:118-28. [DOI: 10.1038/hdy.2009.39] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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28
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KLEIN EK, DESASSIS N, ODDOU-MURATORIO S. Pollen flow in the wildservice tree,Sorbus torminalis(L.) Crantz. IV. Whole interindividual variance of male fecundity estimated jointly with the dispersal kernel. Mol Ecol 2008; 17:3323-36. [DOI: 10.1111/j.1365-294x.2008.03809.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Le Cadre S, Tully T, Mazer SJ, Ferdy JB, Moret J, Machon N. Allee effects within small populations of Aconitum napellus ssp. lusitanicum, a protected subspecies in northern France. THE NEW PHYTOLOGIST 2008; 179:1171-1182. [PMID: 18557816 DOI: 10.1111/j.1469-8137.2008.02529.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Plants growing at low density can suffer from Allee effects as a result of pollen limitation. Previous studies of Allee effects have focused on the effects of variation among populations in size or density on reproduction. Here, the effects of plant distribution within populations on fitness components are explored in a rare plant, Aconitum napellus ssp. lusitanicum, and ecological and genetic mechanisms underlying these effects are identified. To detect pollen limitation, seed production was compared under natural versus hand-supplemented pollinations on inflorescences of different sizes in natural patches differing both in flower density and in isolation from other patches. Germination rate and juvenile survival of seeds produced in low- and high-density patches were also compared. Pollen-supplemented flowers always produced more seeds than open-pollinated flowers, especially among small plants and plants growing at low density. Offspring produced in low-density patches exhibited lower fitness that those produced in high-density patches. This could have been caused by post-fertilization mechanisms, including inbreeding depression or differential maternal resource allocation. These results show that Allee effects on fitness components (ecological and genetic Allee effects) occur within A. napellus populations at different spatial scales. The spatial distribution of plants seems to be a crucial factor affecting reproductive output and fitness.
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Affiliation(s)
- Solenn Le Cadre
- Conservatoire Botanique National du Bassin Parisien (CBNBP), USM Inventaire et Suivi de la Biodiversité, Muséum National d'Histoire Naturelle (MNHN), 61, rue Buffon, F-75005 Paris, France
| | - Thomas Tully
- Laboratoire Fonctionnement et Évolution des Systèmes Écologiques, CNRS UMR 7625, École Normale Supérieure, 46 rue d'Ulm, 75230 Paris cedex 05, France
| | - Susan J Mazer
- Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, CA 93106, USA
| | - Jean-Baptiste Ferdy
- Laboratoire GPIA, Université Montpellier II, place Eugène Bataillon, Bt 24 CC063, F-34095 Montpellier cedex, France
| | - Jacques Moret
- Conservatoire Botanique National du Bassin Parisien (CBNBP), USM Inventaire et Suivi de la Biodiversité, Muséum National d'Histoire Naturelle (MNHN), 61, rue Buffon, F-75005 Paris, France
| | - Nathalie Machon
- Conservatoire Botanique National du Bassin Parisien (CBNBP), USM Inventaire et Suivi de la Biodiversité, Muséum National d'Histoire Naturelle (MNHN), 61, rue Buffon, F-75005 Paris, France
- Unité Conservation des Espèces, Restauration et Suivi des Populations, UMR 5173, Muséum National d'Histoire Naturelle, 61, rue Buffon, F-75005 Paris France
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30
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ODDOU-MURATORIO SYLVIE, KLEIN ETIENNEK. Comparing direct vs. indirect estimates of gene flow within a population of a scattered tree species. Mol Ecol 2008; 17:2743-54. [DOI: 10.1111/j.1365-294x.2008.03783.x] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ordano M, Fornoni J, Boege K, Domínguez CA. The adaptive value of phenotypic floral integration. THE NEW PHYTOLOGIST 2008; 179:1183-1192. [PMID: 18547375 DOI: 10.1111/j.1469-8137.2008.02523.x] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Floral integration has been deemed an adaptation to increase the benefits of animal pollination, yet no attempts have been made to estimate its adaptive value under natural conditions. Here, the variation in the magnitude and pattern of phenotypic floral integration and the variance-covariance structure of floral traits in four species of Rosaceae were examined. The intensity of natural selection acting on floral phenotypic integration was also estimated and the available evidence regarding the magnitude of floral integration reviewed. The species studied had similar degrees of floral integration, although significant differences were observed in their variance-covariance structure. Selection acted on subsets of floral traits (i.e. selection on intrafloral integration) rather than on the integration of the whole flower. Average integration was 20% and similar to the estimated mean value of flowering plants. The review indicated that flowering plants present lower integration than expected by chance. Numerical simulations suggest that this pattern may result from selection favouring intrafloral integration. Phenotypic integration at the flower level seems to have a low adaptive value among the species surveyed. Moreover, it is proposed that pollinator-mediated selection promotes the evolution of intrafloral integration.
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Affiliation(s)
- Mariano Ordano
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, Apartado Postal 70-275 Ciudad Universitaria, México, DF, CP 04510, México
| | - Juan Fornoni
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, Apartado Postal 70-275 Ciudad Universitaria, México, DF, CP 04510, México
| | - Karina Boege
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, Apartado Postal 70-275 Ciudad Universitaria, México, DF, CP 04510, México
| | - César A Domínguez
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, Apartado Postal 70-275 Ciudad Universitaria, México, DF, CP 04510, México
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ROBLEDO-ARNUNCIO JUANJ, AUSTERLITZ FRÉDÉRIC, SMOUSE PETERE. POLDISP: a software package for indirect estimation of contemporary pollen dispersal. ACTA ACUST UNITED AC 2007. [DOI: 10.1111/j.1471-8286.2007.01706.x] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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