polyploid-genetics
Polyploid genetics is the study of organisms that carry more than two complete sets of chromosomes, a condition that arises through whole-genome duplication events. This phenomenon is especially prevalent and consequential in plants, where polyploidy has driven the evolution of major crop lineages and contributed to increased genetic diversity, adaptability, and trait variation. Understanding how polyploid genomes are structured, inherited, and expressed is central to improving crop breeding, yield, and stress resilience.
PubMed · 2026-03-23
Scientists used a precision gene-editing tool (CRISPR/Cas9) to deliberately remove entire chromosomes from wheat by targeting repetitive DNA sequences found only on those chromosomes. This breakthrough could help breeders eliminate unwanted genetic material from wheat more efficiently than traditional methods.
CRISPR/Cas9 targeted at satellite DNA (highly repetitive chromosome-specific sequences) successfully induced chromosome truncation and complete elimination in wheat
The approach exploits repetitive satellite DNA as a unique genomic address to direct editing tools to specific chromosomes, enabling large-scale chromosomal engineering
Chromosome elimination was achieved in wheat, a complex polyploid crop, demonstrating feasibility in genomes with multiple similar chromosome sets
