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3 papers 0 to 25 followers current events in next-generation sequencing in angiosperms
Marta Robertson, Christina Richards
Evolutionary theory posits that adaptation can result when populations harbour heritable phenotypic variation for traits that increase tolerance to local conditions. However, the actual mechanisms that underlie heritable phenotypic variation are not completely understood (Keller ). Recently, the potential role of epigenetic mechanisms in the process of adaptive evolution has been the subject of much debate (Pigliucci & Finkelman ). Studies of variation in DNA methylation in particular have shown that natural populations harbour high amounts of epigenetic variation, which can be inherited across generations and can cause heritable trait variation independently of genetic variation (Kilvitis et al...
August 2015: Molecular Ecology
Dorset W Trapnell, Rochelle R Beasley, Stacey L Lance, Ashley R Field, Kenneth L Jones
PREMISE OF THE STUDY: Microsatellite loci were developed for the epiphytic pencil orchid Dendrobium calamiforme for population genetic and phylogeographic investigation of this Australian taxon. METHODS AND RESULTS: Nineteen microsatellite loci were identified from an Illumina paired-end shotgun library of D. calamiforme. Polymorphism and genetic diversity were assessed in 24 individuals from five populations separated by a maximum distance of ∼80 km. All loci were polymorphic with two to 14 alleles per locus, expected heterozygosity ranging from 0...
June 2015: Applications in Plant Sciences
Rafael B Louzada, Katharina Schulte, Maria das Graças L Wanderley, Daniele Silvestro, Georg Zizka, Michael H J Barfuss, Clarisse Palma-Silva
The saxicolous genus Orthophytum (∼60 species, Bromeliaceae) is endemic to eastern Brazil and diversified in xeric habitats of the Atlantic Rainforest, Caatinga and campos rupestres. Within the genus, two main groups are discerned based on the presence or absence of a pedunculate inflorescence, which are further subdivided into several morphological subgroups. However, these systematic hypotheses have not yet been tested in a molecular phylogenetic framework. Here we present the first phylogenetic analysis of Orthophytum using nuclear and plastid markers (phytochrome C, and trnH-psbA and trnL-trnF spacers)...
August 2014: Molecular Phylogenetics and Evolution
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