Synthetic allohexaploid Brassica hybrids (2n= AABBCC) do not exist naturally, but can be
synthesized by crosses between diploid and/or allotetraploid Brassica species. Using these …

The “genomic shock” hypothesis posits that unusual challenges to genome integrity such as
whole genome duplication may induce chaotic genome restructuring. Decades of research …

Whole-genome duplications (WGDs) are a prominent process of diversification in
eukaryotes. The genetic and evolutionary forces that WGD imposes on cytoplasmic …

Extant genomes are largely shaped by global transposition, copy-number fluctuation, and
rearrangement of DNA sequences rather than by substitutions of single nucleotides …

The members of the tribe Brassiceae share a whole-genome triplication (WGT), and one
proposed model for its formation is a two-step pair of hybridizations producing hexaploid …

Introduction Ribosomal DNA (rDNA) loci have been widely used for identification of
allopolyploids and hybrids, although few of these studies employed high-throughput …

The ancestor of most teleost fishes underwent a whole-genome duplication event three
hundred million years ago. Despite its antiquity, the effects of this event are evident both in …

Polyploidy is an important evolutionary mechanism and is prevalent among land plants.
Most polyploid species examined have multiple origins, which provide genetic diversity and …

Abstract The tribe Astereae (Asteraceae) includes 36 subtribes and 252 genera, and is
distributed worldwide in temperate and tropical regions. One of the subtribes, Celmisiinae …

Among the fungal diseases of apple trees, serious yield losses are due to an apple scab
caused by Venturia inaequalis. Protection against this disease is based mainly on chemical …