Chromosome-scale genome assembly and annotation of Paspalum notatum Flüggé var. saurae.

Paspalum notatum Flüggé is an economically important subtropical fodder grass that is widely used in the Americas. Here, we report a new chromosome-scale genome assembly and annotation of a diploid biotype collected in the center of origin of the species. Using Oxford Nanopore long reads, we generated a 557.

Genomic expression dominance in the natural allopolyploid Coffea arabica is massively affected by growth temperature.

• Polyploidy occurs throughout the evolutionary history of many plants and considerably impacts species diversity, giving rise to novel phenotypes and leading to ecological diversification and colonization of new niches. Recent studies have documented dynamic changes in plant polyploid gene expression, which reflect the genomic and functional plasticity of duplicate genes and genomes. • The aim of the present study was to describe genomic expression dominance between a relatively recently formed natural allopolyploid (Coffea arabica) and its ancestral parents (Coffea canephora and Coffea eugenioides) and to determine if the divergence was environment-dependent.

Factors influencing gene introgression into the allotetraploid Coffea arabica L. from its diploid relatives.

Factors controlling gene introgression into cultivated arabica coffee (Coffea arabica L.) were investigated. Interspecific triploid hybrid plants between the tetraploid species C.