Stress-specific metabolic and physiological responses to drought and waterlogging in Allium cepa L. and Allium × cornutum Clementi ex Vis. (PubMed, Plant Biol (Stuttg)) - Sep 4, 2026 - "Allium × cornutum showed a more pronounced response to drought, characterized by higher RWC, stable chlorophyll and carotenoid levels, increased accumulation of free amino acids and phenolic compounds, especially chlorogenic acid and quercetin glycosides, with significant upregulation of the antioxidant genes SOD and CAT. Allium cepa responded more strongly to waterlogging, showing increased amino acid levels, accumulation of quercetin and its glycosides, a marked increase in α-aminobutyric acid (AABA) concentration and higher expression of CAT and SOD. These results show distinct metabolic responses and physiological changes to drought and waterlogging, reflecting stress-specific adjustments under extreme water conditions and contributing to a better understanding of water stress adaptation in Allium species."
Journal • Metabolic Disorders
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B Soldo; B Urli?; E Vuko; J Puizina; K Radovani; Ž Fredotovi?
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