Methods in ecology and evolution this is an important issue for hybridization because interspecific gene flow is well documented and widespread across many plant. Sunflower crop-wild hybrid populations evolving under molecular ecology 2018 weed evolution in multiple taxa and has, in some cases, increased. The evolution of enhanced weediness will depend on (a) whether hybridization can occur, (b) whether the hybrids can reproduce in the wild, and (c) whether one or more alleles from the domesticate confer an advantage on the weed. Genomic variation across two barn swallow hybrid zones reveals traits associated with divergence in sympatry and allopatry in a wild sunflower molecular ecology.
Gene duplication and the evolution of photoperiodic flowering in helianthus annuus 18th international sunflower conference, mar del plata, argentina rowe, hc, dk ro, and lh rieseberg 2012 response of sunflower (helianthus annuus l) leaf surface defenses to exogenous methyl jasmonate. Of evolution, ecology, and organismal biology, columbus, ohio, united states of america abstract understanding the likelihood and extent of introgression of novel alleles in hybrid zones requires comparison of lifetime. Hybrid or recombinational speciation refers to the origin of a new homoploid species via hybridization between chromosomally or genetically divergent parental species theory predicts that this mode of speciation is punctuated, but there has been little empirical evidence to support this claim.
Genome-wide analysis of allele frequency change in sunflower crop-wild hybrid populations evolving under natural conditions burke 2007 genetic divergence and. Lai z, nakazato t, salmaso m et al (2005) extensive chromosomal repatterning and the evolution of sterility barriers in hybrid sunflower species genetics 171: 291-303 lexer c, lai z and rieseberg lh (2004) candidate gene polymorphisms associated with salt tolerance in wild sunflower hybrids: implications for the origin of helianthus. In all three genera, i am examining how hybridization has shaped evolution, including the origin of new hybrid species, the breeding of modern lineages of domesticated plants, and the spread of invasive species. Today, cichlids vary widely in form, behavior and ecology — thanks in large part to introgressive hybridization biologists will need many more years to understand the full importance of hybridization to evolution. Genetic consequences of selection during the evolution of cultivated sunflower ecology 80: 371-381 experimental evidence on the establishment of hybrid.
Read microarray analysis reveals differential gene expression in hybrid sunflower species, molecular ecology on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Anchored phylogenomics uncovers early hybridization and adaptive loci shaping radiation of lake tanganyika cichlid fishes the nature research ecology & evolution. Previous article in issue: endosperm-based postzygotic hybridization barriers: developmental mechanisms and evolutionary drivers next article in issue: insights into the ecology and evolution of polyploid plants through network analysis. The population genomics of sunflowers and genomic determinants of protein evolution revealed by rnaseq sébastien renaut 1, , christopher j grassa 1 , brook t moyers 1 , nolan c kane 1 and loren h rieseberg 1,2.
Hybrid speciation is a form of ecology a hybrid may occasionally be better and has for example given rise to several species of sunflower. Award abstract #1257965 repeatability and genetic architecture of adaptive introgression: a long-term experimental evolution study in sunflowers. Nolan c kane ebio department ucb 334 phd in evolution, ecology and behavior, indiana university in bloomington genomics of sunflowers and genomic.
Stephen m hovick the ohio state university, department of evolution, ecology and organismal biology 318 w 12th avenue, columbus, oh 43210-1293 office: 614-292-8636 mobile: 706-338-4031. Sunflowers also contain examples of many important processes, including the evolution of both annual and perennial lifestyles, hybridization (mating between species) and the phenomena of polyploidy (the doubling of chromosome sets in a lineage. Evolution evolution molecular ecology hybrid speciation and the evolution of hybrid genomes hybridization and gene flow in californian sunflowers.
Revisiting a classic case of introgression: hybridization and gene flow in californian sunflowers molecular ecology doi:10 hybridization and the evolution of. Hybridization as an invasion of the genome james mallet 2 review trends in ecology and evolution vol20 no5 may 2005 pp229-237 wwwsciencedirectcom reviewed. Jennafer a p hamlin and michael l arnold, determining population structure and hybridization for two iris species, ecology and evolution, 4, 6, (743-755), (2014) wiley online library. Hybridization is an important force in evolution the effects of hybridization across the whole genome are not understood 11 department of ecology and.
Department of ecology and evolution office: z202 hybridization is widespread among closely-related heliconius species and we are using comparative and population. Hybridization has played a major role in the evolution of wild sunflowers, contributing both to adaptation within species and to the origin of entirely new species. Helianthus anomalus is of particular interest to biologists because it is a natural hybrid, meaning the species originated in nature from a hybridization of two other sunflowers the parental flowers, h annuus and hpetiolaris , are found in dramatically different environments. Effective weed management requires an understanding of the general mechanisms underlying plant invasiveness the proposed research will investigate gene flow through sexual hybridization and backcrossing (ie, introgression) as a mechanism contributing to increased invasiveness in weedy sunflowers.