aquatic-vegetables
Aquatic vegetables are edible plants adapted to grow in waterlogged or submerged environments, often featuring specialized structures like arrow-shaped leaves, air channels (aerenchyma), and modified root systems to thrive in low-oxygen conditions. Studying these species helps plant scientists understand adaptations to hypoxic stress, nutrient uptake in aquatic ecosystems, and the evolutionary pathways that allow terrestrial plant lineages to colonize water-based habitats. This research also informs sustainable cultivation practices for wetland and paddy agriculture systems.
open_in_new WikipediaPubMed · 2026-07-10
Researchers found that the plant hormone gibberellin controls a direct trade-off in arrowhead (water arrowhead): more of it means taller plants but smaller edible corms underground, while blocking it does the opposite. Growers can use this knowledge to tune plant height and boost the yield of the starchy corms people eat.
GA3 (gibberellin) treatment significantly increased plant height and reduced underground corm size compared to controls.
Paclobutrazol (a gibberellin inhibitor) had the opposite effect: shorter plants and larger corms.
Cell-level analysis showed GA3 caused elongation of petiole epidermal and parenchyma cells, explaining the height increase; gene expression of four GA-related genes (StKS1, StKS2, StKS3, StGA3ox) changed significantly under both treatments.
