UNIFR
Dept Biology
Ecology & Evolution
  


The Lexer Lab

Molecular ecology
&
evolutionary genetics group



Publications


Scopece G, Croce A, Lexer C, Cozzolino S (2013) Components of reproductive isolation between Orchis mascula and O. pauciflora. Evolution, doi: 10.1111/evo.12091

Fan Y, Rupert K, Wiedenhoeft AC, Woeste K, Lexer C, and Meilan R (2013) Figured grain in aspen is heritable and not affected by graft-transmissible signals. Trees DOI 10.1007/s00468-013-0849-1

Lexer C, Mangili S, Bossolini E, Forest F, Stolting KN, Pearman PB, Zimmermann NE and Salamin N (2013) ‘Next generation’ biogeography: towards understanding the drivers of species diversification and persistence. Journal of Biogeography, 40:1013–1022.

Stölting KN, Nipper R, Lindtke D, Caseys C, Waeber S, Castiglione S, Lexer C (2013) Genomic scan for single nucleotide polymorphisms reveals patterns of divergence and gene flow between ecologically divergent species.  Molecular Ecology, 22:842-855.

Hamilton JA, Lexer C and Aitken SN (2013) Differential introgression reveals candidate genes for selection across a spruce (Picea sitchensis x P. glauca) hybrid zone. New Phytologist, 197:927-938.

Caseys C, Glauser G, Stölting KN, Christe C, Albrectsen BR and Lexer C (2012) Effects of interspecific recombination on functional traits in trees revealed by metabolomics and genotyping-by-resequencing. Plant Ecology & Diversity, 5:457-471.

Lexer C and Stölting KN (2012) Whole genome sequencing (WGS) meets biogeography and shows that genomic selection in forest trees is feasible. New Phytologist, 196:652-654,

Lindtke D, Buerkle CA, Barbará T, Heinze B, Castiglione S, Bartha D & Lexer C (2012): Recombinant hybrids retain heterozygosity at many loci: new insights into the genomics of reproductive isolation in Populus. Molecular Ecology, 21:5042-5058.

Hamilton JA, Lexer C, Aitken SN (2012) Genomic and phenotypic architecture of a spruce hybrid zone (Picea sitchensis × P. glauca). Molecular Ecology, 22:827-841.

Litsios G, Pellissier L, Forest F, Lexer C, Pearman PB, Zimermann NE, Salamin N (2012) Trophic specialization influences the rate of environmental niche evolution in damselfishes (Pomacentridae). Proceedings of the Royal Society B, Biological Sciences, 279:3662-3669.

Versieux LM, Barbará T, Wanderley Md, Calvente A, Fay MF, Lexer C (2012) Molecular phylogenetics of the Brazilian giant bromeliads (Alcantarea, Bromeliaceae): implications for morphological evolution and biogeography. Molecular Phylogenetics and Evolution, 64: 177-189

Lexer C and Stölting KN (2011) Tracing the recombination and colonization history of hybrid species in space and time. Molecular Ecology, 20:3701-3704

Macaya-Sanz D, Suter L, Joseph J, Barbará T, Alba N, Gonzalez-Martínez SC, Widmer A, Lexer C (2011) Genetic analysis of post-mating reproductive barriers in hybridizing European Populus species. Heredity, 107:478-486.

Pinheiro F, de Barros F, Palma-Silva C, Fay MF, Lexer C, Cozzolino S (2011) Phylogeography and genetic differentiation along the distributional range of the orchid Epidendrum fulgens: a Neotropical coastal species not restricted to glacial refugia. Journal of Biogeography, 38:1923-1935.

Palma-Silva C, Wendt T, Pinheiro F, Barbará T, Fay MF, Cozzolino S, Lexer C (2011) Sympatric bromeliad species (Pitcairnia spp.) facilitate tests of mechanisms involved in species cohesion and reproductive isolation in Neotropical inselbergs. Molecular Ecology, 20:3185-3201.

Scopece G, Lexer C, Widmer A, and Cozzolino S (2010) Polymorphism of postmating reproductive isolation within plant species. Taxon,  59:1367-1374.

Allen AM,  Lexer C, Hiscock SJ (2010) Comparative analysis of pistil transcriptomes reveals conserved and novel genes
expressed in dry, wet and semi-dry stigmas. Plant Physiology,  September 2010 pp.110.162172.

Lexer C, Joseph JA, van Loo M, Barbará T, Heinze B, Bartha D, Castiglione S, Fay MF, Buerkle CA (2010) Genomic admixture analysis in European Populus spp. reveals unexpected patterns of reproductive isolation and mating. Genetics, 186:699-712

Pinheiro F, de Barros F, Palma-Silva C, Meyer D, Fay MF, Suzuki RM, Lexer C, Cozzolino S (2010) Hybridization and introgression across different ploidy levels in the Neotropical orchids Epidendrum fulgens and E. puniceoluteum (Orchidaceae). Molecular Ecology, 19:3981-3994.

Allen AM, Lexer C, Hiscock SJ (2010) Characterisation of sunflower-21 (SF21) genes expressed in pollen and pistil of Senecio squalidus (Asteraceae) and their relationship with other members of the SF21 gene family.  Sexual Plant Reproduction, 23:173-186.

de Carvalho D, Ingvarsson PK, Joseph J, Suter L, Sedivy C, Macaya-Sanz D, Cottrell J, Heinze B, Schanzer S, Lexer C (2010) Admixture facilitates adaptation from standing variation in the European aspen (P. tremula L.), a widespread forest tree. Molecular Ecology, 19:1638-1650

Hidalgo E, González-Martínez SC, Lexer C, Heinze B (2010) Conservation genomics. In: Jansson S, Bhalerao R, Groover A (eds.) Genetics and Genomics of Populus, Springer, Heidelberg & New York.

Fussi B, Lexer C, Heinze B (2010) Phylogeography of Populus alba (L.) and Populus tremula (L.) in Central Europe: secondary contact and hybridisation during recolonisation from disconnected refugia: Tree Genetics & Genomes, 6:439-450.

Pinheiro F, Palma-Silva C, de Barros F, Felix LP, Lexer C, Cozzolino S, Fay MF (2009) Chloroplast microsatellite markers for the Neotropical orchid genus Epidendrum, and cross-amplification in other Laeliinae species (Orchidaceae). Conservation Genetics Resources, 1:505-511.

Palma-Silva C, Lexer C, Paggi GM, Barbará T, Bered F, Bodanese-Zanettini MH (2009) Range-wide patterns of nuclear and chloroplast DNA diversity in Vriesea gigantea (Bromeliaceae), a neotropical forest species. Heredity, 103:503-512.

Babik W, Butlin RK, Baker WJ, Papadopulos AST, Boulesteix M, Anstett MC, Lexer C, Hutton I, Savolainen V (2009) How sympatric is speciation in the Howea palms of Lord Howe Island? Molecular Ecology, 18:3629-3638.

Fay MF, Bone R, Cook P, Kahandawala I, Greensmith J, Harris S, Pedersen HAE, Ingrouille MJ, Lexer C (2009) Genetic diversity in Cypripedium calceolus (Orchidaceae) with a focus on north-western Europe, as revealed by plastid DNA length polymorphisms. Annals of Botany, 104:517-525.

Gonzalez-Perez MA, Lledo MD, Lexer C, Fay M, Marrero M, Banares-Baudet A, Carque E, Sosa PA (2009) Genetic diversity and differentiation in natural and reintroduced populations of Bencomia exstipulata and comparisons with B. caudata (Rosaceae) in the Canary Islands: an analysis using microsatellites. Botanical Journal of the Linnean Society, 160:429-441.

Lexer C, Joseph J, van Loo M, Prenner G, Heinze B, Chase MW, Kirkup D (2009). The use of digital image-based morphometrics to explore the ‘phenotypic mosaic’ in taxa with porous genomes. Taxon, 58:349-364.

Andrade IM, Mayo SJ, Van Den Berg C, Fay MF, Chester M, Lexer C, Kirkup D (2009) Genetic variation in natural populations of Anthurium sinuatum and A. pentaphyllum var. pentaphyllum (Araceae) from north-east Brazil using AFLP molecular markers. Botanical Journal of the Linnean Society, 159:88-105.

Widmer A, Lexer C, Cozzolino S (2009) Evolution of reproductive isolation in plants. Heredity, 102:31-38.

Barbará T, Martinelli G, Palma-Silva C, Fay MF, Mayo S, Lexer C (2009) Genetic relationships and variation in reproductive strategies in four closely related bromeliads adapted to neotropical 'inselbergs': Alcantarea glaziouana, A. regina, A. geniculata and A. imperialis (Bromeliaceae). Annals of Botany, 103:65-77

Buerkle CA & Lexer C (2008) Admixture as the basis for genetic mapping. Trends in Ecology and Evolution, 23:686-694.
 
Paggi GM, Palma-Silva C, Bered F, Cidade FW, Sousa AP, Wendt T, Lexer C (2008) Isolation and characterization of microsatellite loci in Pitcairnia albiflos (Bromeliaceae), an endemic bromeliad from the Atlantic Rainforest, and cross-amplification in other species. Molecular Ecology Notes, 8:980-982.
 
Lexer C & Widmer A (2008) The genic view of plant speciation: recent progress and emerging questions. Philosophical Transactions of the Royal Society of London, 363:3023-3036
 
Barbará T, Lexer C, Martinelli G, Mayo S, Fay MF, Heuertz M (2008) Within-population spatial genetic structure in four naturally fragmented plant species of a neotropical ‘inselberg’ radiation, Alcantarea imperialis, A. geniculata, A. glaziouana, and A. regina (Bromeliaceae). Heredity, 101:285-296
 
van Loo M, Joseph JA, Heinze B, Fay MF, Lexer C (2008) Clonality and spatial genetic structure in Populus x canescens and its sympatric backcross parent P. alba in a Central European hybrid zone. New Phytologist, 177:506-516.
 
Joseph JA & Lexer C (2008) A set of novel DNA polymorphisms within candidate genes potentially involved in ecological divergence between Populus alba and P. tremula, two hybridising European forest trees. Molecular Ecology Notes, 8:188-192.
 
Palma-Silva C, Cavallari MM, Barbará T, Lexer C, Gimenes MA, Bered F, and Zanettini MH (2007) A set of polymorphic microsatellite loci for Vriesea gigantea and Alcantarea imperialis (Bromeliaceae) and cross-amplification in other bromeliad species. Molecular Ecology Notes, 7:654-657. 
 
Lexer C, Buerkle A, Joseph J, Heinze B, and Fay MF (2007) Admixture in European Populus hybrid zones makes feasible the mapping of loci that contribute to reproductive isolation and trait differences. Heredity, 98:74-84.
 
Lexer C, Van Loo M, Barbará T (2007). Towards forest community and ecosystem genomics. New Phytologist, 173:673-676.
 
Barbará T, Martinelli G, Fay MF, Mayo SJ, Lexer C (2007). Population differentiation and species cohesion in two closely related plants adapted to neotropical high-altitude ‘inselbergs’, Alcantarea imperialis and A. geniculata. Molecular Ecology, 16:1981-1992.
 
Rieseberg LH, Kim S-C, Randell R; Whitney K, Gross B, Lexer C; Clay K (2007) Hybridization and the colonization of novel habitats by annual sunflowers. Genetica, 129:149-165.
 
Karrenberg S, Lexer C, and Rieseberg LH (2007). Reconstructing the history of selection during homoploid hybrid speciation. The American Naturalist, 169:726-737.
 
Barbará T, Palma-Silva C, Paggi GM, Bered F, Fay MF, and Lexer C (2007) Cross-species transfer of nuclear microsatellite markers: potential and limitations. Molecular Ecology, 16:3757-3767.
 
Andrade IM, Mayo SJ, Van den Berg, Fay MF, Chester M, Lexer C, and Kirkup D (2007) A preliminary study of genetic variation in populations of Monstera adansonii var. klotzschiana (Araceae) from north-east Brazil, estimated with AFLP molecular markers. Annals of Botany, 100:1143-1154.

Brouillette LC, Rosenthal DM, Rieseberg LH, Lexer C, et al.(2007) Genetic architecture of leaf ecophysiological traits in Helianthus. Journal of Heredity, 98:142-146 
 
Bratteler M, Lexer C, Widmer A (2006) Genetic architecture of traits associated with serpentine adaptation in Silene vulgaris. Journal of Evolutionary Biology, 19:1149-1156.
 
Savolainen V, Anstett M-C, Lexer C et al (2006) Sympatric speciation in palms on an oceanic island. Nature, 441:210-213.
 
Lexer C, Kremer A, Petit R (2006) Shared alleles in sympatric oaks: recurrent gene flow is a more parsimonious explanation than ancestral polymorphism. Comment. Molecular Ecology, 15:2007-2012.
 
Lexer C & van Loo M (2006) Contact zones: natural labs for studying evolutionary transitions. Current Biology, 16:R407-R409.
 
Karrenberg S, Edelist C, Lexer C, and Rieseberg L (2006) Response to salinity in the homoploid hybrid species Helianthus paradoxus and its progenitors H. annuus and H. petiolaris. New Phytologist, 170:615-629.
 
Lysak MA, Lexer C (2006) Towards the era of comparative evolutionary genomics in Brassicaceae. Plant Systematics and Evolution, 259:175-198.
 
Bratteler M, Lexer C, Widmer A (2006) A genetic linkage map of Silene vulgaris based on AFLP markers. Genome, 49:320-327.
 
Cozzolino S, Nardella AM, Impagliazzo S, Widmer A, Lexer C (2006) Hybridization and orchid conservation: should we protect the orchid hybrids or the orchid hybrid zones? Biological Conservation, 129:14-23.
 
Edelist C, Lexer C, Dillmann C, Sicard D, Rieseberg LH (2006) Microsatellite signature of ecological selection for salt tolerance in a wild sunflower hybrid species, Helianthus paradoxus. Molecular Ecology, 15:4623-4634. 
 
Savolainen V, Lexer C, Anstett MC, Hutton I, Clarkson JJ, Norup MV, Powell, Springate D, Salamin N, Baker WJ (2006) Evolutionary biology - Sympatric plant speciation in islands? Nature, 443:7114.
 
Lexer C, Fay MF, Joseph JA, M-S Nica, Heinze B (2005) Barrier to gene flow between two ecologically divergent Populus species, Populus alba (white poplar) and P. tremula (European aspen): the role of ecology and life history in gene introgression. Molecular Ecology, 14:1045-1057.
 
Lexer C, Rosenthal DM, Raymond O, Donovan LA, Rieseberg LH (2005) The genetics of species differences in the wild annual sunflowers, Helianthus annuus and H. petiolaris. Genetics, 169:2225-2239.
 
Lexer C, Fay M (2005) Adaptation to environmental stress: a rare or frequent driver of speciation? Journal of Evolutionary Biology, 18:893-900.
 
Lexer C, Lai Z, Rieseberg LH. 2004. Candidate gene polymorphisms associated with salt tolerance in wild sunflower hybrids: implications for the origin of Helianthus paradoxus, a diploid sunflower hybrid species. New Phytologist, 161:225-233.
 
Lexer C, Heinze B, Alia R, Rieseberg LH (2004) Hybrid zones as a tool for identifying adaptive genetic variation in outbreeding forest trees: lessons from wild annual sunflowers (Helianthus spp.). Proceedings of the DYGEN conference (Dynamics and Conservation of Genetic Diversity in Forest Ecosystems), Dec. 2-5, 2002, Strasbourg, France. Forest Ecology and Management, 197:49-64.
 
Ludwig F, Rosenthal DM, Johnston JA, Kane N, Gross BL, Lexer C, Dudley SA, Rieseberg LH, and Donovan LA (2004) Selection on leaf ecophysiological traits in a desert hybrid Helianthus species and early-generation hybrids. Evolution, 58:2682-2692.
 
Gross BL, Kane NC, Lexer C, Ludwig F, Rosenthal DM, Donovan LA, Rieseberg LH (2004) Reconstructing the origin of Helianthus deserticola: survival and selection on the desert floor. The American Naturalist, 164:145-156.
 
Gonzalez-Perez MA, Llledo MD, Fay MF, Lexer C, and Sosa PA (2004) Isolation and characterization of microsatellite loci in Bencomia exstipulata and B. caudata (Rosaceae). Molecular Ecology Notes, 4:130-132.
 
Juan A, Crespo MB, Cowan RS, Lexer C, Fay MF (2004) Patterns of variability and gene flow in Medicago citrina, an endangered endemic of islands in the western Mediterranean, as revealed by amplified fragment length polymorphism (AFLP). Molecular Ecology, 13:2679-2690.
 
Lexer C, Welch ME, Durphy JL, Rieseberg LH. 2003. Natural selection for salt tolerance quantitative trait loci (QTLs): Implications for the origin of Helianthus paradoxus, a diploid hybrid species. Molecular Ecology, 12:1225-1235.
 
Rieseberg LH, Raymond O, Rosenthal DM, Lai Z, Livingstone K, Nakazato T, Durphy JL, Schwarzbach AE, Donovan LA, Lexer C. 2003. Major ecological transitions in wild sunflowers facilitated by hybridization. Science, 301:1211-1216.
 
Lexer C, Welch ME, Raymond O, Rieseberg LH. 2003. The origin of ecological divergence in Helianthus paradoxus (Asteraceae): Selection on transgressive characters in a novel hybrid habitat. Evolution, 57:1989-2000.
 
Lexer C, Randell R, Rieseberg LH. (2003) Experimental hybridization as a tool for studying selection in the wild. Special Feature on ‘Selection studies in ecology: concepts, methods, and directions’. Ecology, 84:1688-1699.
 
Widmer A, and Lexer C (2001) Glacial refugia: sanctuaries for allelic richness, but not for gene diversity. Trends in Ecology and Evolution, 16:267-269.
 
Lexer C, Heinze B, Gerber S, Macalka-Kampfer S, Steinkellner H, Kremer A, Glössl J (2000) Microsatellite analysis of maternal half-sib families of Quercus robur, pedunculate oak (II): inferring the number of pollen donors from the offspring. Theoretical and Applied Genetics, 100:858-865.
 
Lexer C, Heinze B, Steinkellner H, Kampfer S, Ziegenhagen B, Glössl J (1999) Microsatellite analysis of maternal half-sib families of Quercus robur, pedunculate oak: detection of seed contaminations and inference of the seed parents from the offspring. Theoretical and Applied Genetics, 99:185-191.
 
Streiff R, Ducousso A, Lexer C, Steinkellner H, Glössl J, Kremer A (1999) Pollen dispersal inferred from paternity analysis in a mixed oak stand of Quercus robur and Quercus petraea (Matt.) Liebl. Molecular Ecology, 8:831-841.
 
Barreneche T, Bodenes C, Lexer C, Trontin JF, Fluch S, Streiff R, Plomion C, Roussel G, Steinkellner H, Burg K, Favre JM, Glössl J, Kremer A (1998) A genetic linkage map of Quercus robur L. (pedunculate oak) based on RAPD, SCAR, microsatellite, minisatellite, isozyme and 5s rDNA markers. Theoretical and Applied Genetics, 97:1090-1103.
 
Kampfer S, Lexer C, Glössl J, Steinkellner H (1998) Characterization of (GA)n microsatellite loci from Quercus robur. Hereditas, 129:183-186.
 
Sefc KM, Guggenberger S, Regner F, Lexer C, Glossl J, Steinkellner H  (1998) Genetic analysis of grape berries and raisins using microsatellite markers. Vitis, 37:123-125.
 
Steinkellner H, Lexer C, Turetschek E, Glössl J (1997) Conservation of (GA)n microsatellite loci between Quercus species. Molecular Ecology, 6:1189-1194.
 
Steinkellner H, Fluch S, Turetschek E, Lexer C, Streiff R, Kremer A, Burg K, Glössl J (1997) Identification and characterization of (GA/CT)n -microsatellite loci from Quercus petraea. Plant Molecular Biology, 33:1093-1096.
Last update: June 2013