Br Brachypodium hybridum exemplifies how recurrent allopolyploidization, minimal subgenomic recombination, and environmental filtering generate and maintain genetic diversity, establishing it as a model for polyploid evolution and ecological adaptation in grasses worldwide.
Subgenome-resolved phylogenomic analyses revealed that the dominant Chloranthales subgenome exhibits phylogenetic affinity with eudicots, whereas the recessive subgenome is associated with monocots, indicating a deep reticulate origin involving ancestral lineages related to these major angiosperm clades.
Yu Cao, Hen-Huang Chen, Y. Van de Peer et al.· bioRxiv· 0 citations
SUMMARY Whole‐genome duplication (WGD, or polyploidization) is a major evolutionary force in plants, yet the genomic, transcriptional, and metabolic consequences of autopolyploidy remain less understood than those of allopolyploidy. Dioscorea nipponica, a medicinal species producing diosgenin‐type steroidal saponins, h...
Shan-Shan Li, Xiao-Qin Sun, Yu Feng et al.· The Plant Journal· 0 citations
Grasses (Poaceae) are the most economically important group of plants. Reconstructing the ancestral grass genome and studying the evolutionary factors shaping major grass lineages are crucial for understanding the evolution of cereals, including rice, wheat and maize. Here, we report a chromosome-level genome assembly...
While interspecific hybridization is a recognized key driver of plant diversification in recently diverged lineages, the resulting introgression can generate complex patterns of genetic and morphological variation that often challenge the recognition of species boundaries. In
Paepalanthus
(Eriocaulaceae), intersp...
Mylena Cabrini, C. Lira, Daiki Takahashi et al.· Organisms Diversity & Ev...· 0 citations
The decaploid grass Thinopyrum ponticum (Th. ponticum, 2n = 10x = 70) is valuable for improving wheat resilience to biotic and abiotic stressors. However, the high level of ploidy and repetitive nature of its large genome present challenges for genome assembly. We used long-read sequencing and an iterative reassembly s...
Ping-Chuan Deng, Jing-Zhong Xie, Xuan-Zhao Li et al.· Molecular Plant· 0 citations
BACKGROUND AND AIMS
Polyploidization is one of the major evolutionary forces in grasses (Poaceae), yet the genomic relationships between polyploid species across different continents remain poorly understood. Here, we aim to determine whether phylogenetically distinct South American allohexaploid fescues, Festuca uloch...
Y. D. Santos, Marco Túlio Mendes Ferreira, David Kopecký et al.· Annals of Botany· 0 citations
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