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Article
Open AccessLearning to tango with four (or more): the molecular basis of adaptation to polyploid meiosis
Polyploidy, which arises from genome duplication, has occurred throughout the history of eukaryotes, though it is especially common in plants. The resulting increased size, heterozygosity, and complexity of th...
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Article
Open AccessDiffusion-mediated HEI10 coarsening can explain meiotic crossover positioning in Arabidopsis
In most organisms, the number and distribution of crossovers that occur during meiosis are tightly controlled. All chromosomes must receive at least one ‘obligatory crossover’ and crossovers are prevented from...
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Article
Open AccessRelaxed purifying selection in autopolyploids drives transposable element over-accumulation which provides variants for local adaptation
Polyploidization is frequently associated with increased transposable element (TE) content. However, what drives TE dynamics following whole genome duplication (WGD) and the evolutionary implications remain un...
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Article
Pervasive population genomic consequences of genome duplication in Arabidopsis arenosa
Ploidy-variable species allow direct inference of the effects of chromosome copy number on fundamental evolutionary processes. While an abundance of theoretical work suggests polyploidy should leave distinct p...
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Article
Open AccessThe challenge of evolving stable polyploidy: could an increase in “crossover interference distance” play a central role?
Whole genome duplication is a prominent feature of many highly evolved organisms, especially plants. When duplications occur within species, they yield genomes comprising multiple identical or very similar cop...
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Article
Polyploidy in the Arabidopsis genus
Whole genome duplication (WGD), which gives rise to polyploids, is a unique type of mutation that duplicates all the genetic material in a genome. WGD provides an evolutionary opportunity by generating abundan...
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Article
Open AccessHorizontal transfer of expressed genes in a parasitic flowering plant
Recent studies have shown that plant genomes have potentially undergone rampant horizontal gene transfer (HGT). In plant parasitic systems HGT appears to be facilitated by the intimate physical association bet...
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Article
Hybrid necrosis: autoimmunity as a potential gene-flow barrier in plant species
Post-zygotic genetic incompatibility can ensue when hybridization brings together gene products that no longer function properly together in the same genome, t...
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Article
The origin of the naked grains of maize
A simple genetic change liberated the naked kernel from the protective casing that envelops it in the maize progenitor, teosinte. With the kernel exposed on the surface of the ear it was readily utilized as a ...
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Article
The 35S promoter used in a selectable marker gene of a plant transformation vector affects the expression of the transgene
Positive selection of transgenic plants is essential during plant transformation. Thus, strong promoters are often used in selectable marker genes to ensure successful selection. Many plant transformation vect...
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Article
KANADI regulates organ polarity in Arabidopsis
Leaves and floral organs are polarized along their adaxial–abaxial (dorsal–ventral) axis. In Arabidopsis, this difference is particularly obvious in the first two rosette leaves, which possess trichomes (leaf hai...
