水素水が植物の胚軸・根の伸長に与える影響：内生ジベレリンおよびオーキシン濃度の変動を介したメカニズムの検討
This study examined the effects of hydrogen-rich water (HRW) on vegetable seedling growth. Treatment with 480 μM H2 (60% of saturated concentration) significantly increased fresh weight, hypocotyl length, and root length in mung bean seedlings compared with controls. In dark-grown seedlings, HRW elevated endogenous IAA and GA3 levels. Exogenous GA3 enhanced hypocotyl elongation specifically, whereas uniconazole, a GA3 biosynthesis inhibitor, suppressed HRW-induced hypocotyl elongation without affecting roots. IAA application amplified HRW-induced elongation in both organs, while the IAA biosynthesis inhibitor TIBA abolished these effects. Growth-promoting outcomes were also observed in cucumber and radish seedlings, indicating a general mechanism applicable across species.
HRW elevates GA3 content in hypocotyls and IAA content in roots, stimulating cell elongation in each organ through distinct phytohormone pathways and thereby promoting overall seedling growth.
Hydrogen-rich water is a low-risk delivery route, but the achievable systemic hydrogen dose is bounded. For clinical applications, inhalation is the most efficient route; inhalation, however, carries explosion risk, and concentration matters (empirical LFL of 10% applies to inhalation environments; high-concentration devices are documented in the Consumer Affairs Agency accident database and are not recommended).
See also:
https://h2-papers.org/en/papers/32522330