The abstract is read at the publisher; the summary is JClub's.
Autotetraploid Fragaria nilgerrensis shows enhanced gray mold resistance alongside gigantism, linked to cell-type-specific dosage reprogramming in epidermal cells.
- Why it matters: Whole-genome duplication can remodel genomes and epigenomes, but how these changes operate across cell types to produce adaptive defense phenotypes is unclear.
- What they did: Autotetraploids were generated by colchicine treatment and analyzed with integrated multi-omics plus single-nucleus transcriptomics; genome-wide TE hypermethylation and promoter/gene-body methylation patterns were assessed, and LAC9 was functionally tested.
- The result: Epidermal cells upregulated cell wall and cuticle reinforcement genes, and LAC9 overexpression increased resistance in diploids while LAC9 silencing weakened resistance in tetraploids, supporting a barrier-based defense strategy.
The findingWhy it mattersWhat they didThe result
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