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Extreme Polyploidy Reveals Functional Trade-Offs in Plant Drought Responses.
Plant, Cell & Environment · · Journal Article · Open access
López-Jurado, Mateos-Naranjo + more
Abstract ↗AI summary
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In glasshouse-grown Dianthus broteri, drought-linked water-use traits scale with cytotype ploidy, but the 12× cytotype deviates, showing higher gmin and thinner epicuticular wax.
- Why it matters: Polyploidy’s role in drought responses is unclear, especially how different ploidy levels coordinate cell-level anatomy with water transport and retention traits.
- What they did: Plants from diploid (2×), low-polyploid (4×), and high-polyploid (6× and 12×) cytotypes were grown in a glasshouse and assessed for leaf and stem anatomy, hydraulic vulnerability, and drought performance.
- The result: Under drought, lower ploidies maintained functional canopies via reduced water loss, while 12× showed a less conservative water-use strategy and seasonal canopy loss.
The findingWhy it mattersWhat they didThe result
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