水素水がアルミニウム誘発性根伸長阻害をアルファルファで軽減する：一酸化窒素産生低下を介したメカニズム
Aluminum (Al) toxicity in plants manifests early as inhibition of root elongation. This study examined whether hydrogen-rich water (HRW) could counteract this effect in alfalfa seedlings. Exposure to Al alone or combined with the nitric oxide (NO) donor sodium nitroprusside (SNP) elevated NO levels and significantly suppressed root elongation. Pretreatment with HRW at 50% saturation reduced these responses, improved overall seedling growth, and lowered Al accumulation in root tissue. Application of an NO scavenger produced effects comparable to HRW, supporting the conclusion that HRW acts by reducing NO production rather than by directly neutralizing Al. These findings suggest a potential role for hydrogen in improving crop stress tolerance under Al-contaminated soil conditions.
HRW is proposed to reduce NO accumulation triggered by aluminum exposure in alfalfa roots. Because an NO scavenger replicated HRW's protective effects on root elongation, the mechanism appears to involve H2-mediated suppression of NO production rather than direct Al chelation.
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/24413050