PubMed · 2026-02-14
Scientists are uncovering how plants block genetic reshuffling in key regions of their DNA, allowing beneficial traits to stay bundled together across generations — a process that drives how new plant species form and how plants adapt to new environments.
Suppressing genetic reshuffling allows plants to keep clusters of advantageous genes inherited together, acting like a 'supergene' that resists being broken apart across generations.
New DNA sequencing technologies (long-read and haplotype-resolved methods) are now enabling scientists to map exactly where and how recombination is blocked across diverse plant genomes at unprecedented resolution.
Multiple mechanisms drive recombination suppression in plants — including structural rearrangements, jumping DNA elements (transposons), epigenetic chemical tags, and centromere biology — reflecting the added complexity from plants' history of whole-genome duplications.