ArticleBMC plant biology2026
Integrated transcriptomic and biochemical analyses reveal mechanisms of drought adaptation in strawberry (Fragaria × ananassa L.).
Article in BMC plant biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Drought is a major abiotic stress that limits strawberry productivity worldwide, yet the underlying physiological and molecular mechanisms of cultivar-specific tolerance remains poorly understood. This study integrated physiological, biochemical, and transcriptomic analyses to dissect drought responses of two contrasting cultivars of Fragaria × ananassa: drought-tolerant 'Kara' and drought-sensitive 'E22'. Plants were exposed to both progressive water-deficit (Def) and PEG-induced osmotic stress under controlled greenhouse conditions. Physiologically, the two cultivars diverged substantially: E22 exhibited progressive chlorophyll decline and severe reduction in PSII efficiency (Fv/Fm dropping to 0.64 under PEG), whereas Kara maintained and even increased its chlorophyll content throughout the experiment while sustaining higher Fv/Fm values (> 0.72). Proline accumulation - a key osmoprotective response - was significantly higher in Kara (1.50 vs 0.78 µmol g⁻
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