# Magnesium Hydride-Mediated Sustainable Hydrogen Supply Prolongs the Vase Life of Cut Carnation Flowers via Hydrogen Sulfide.
> 水素化マグネシウムによる持続的水素供給が硫化水素を介してカーネーション切り花の観賞寿命を延長する


## Abstract

Magnesium hydride (MgH₂) combined with citrate buffer solution demonstrated superior hydrogen production efficiency and longer H₂ residence time in solution compared with hydrogen-rich water alone. In cut carnation flowers, MgH₂-citrate buffer treatment stimulated endogenous hydrogen sulfide (H₂S) biosynthesis, partially suppressed the upregulation of senescence-associated gene transcripts, and restored redox homeostasis, collectively resulting in a significant extension of vase life. These beneficial effects were abolished when endogenous H₂S was scavenged by hypotaurine, confirming that H₂S signaling acts as the primary mediating pathway. The findings suggest that solid-state hydrogen-releasing materials such as MgH₂ have practical potential in postharvest agricultural applications.

### Mechanism

H₂ released from MgH₂ stimulates endogenous H₂S biosynthesis in carnation flowers, which in turn restores redox homeostasis and suppresses senescence-associated gene expression, thereby delaying postharvest aging.

## Bibliographic

- **Authors**: Li L, Liu Y, Wang SP, Zou J, Ding W, Shen W
- **Journal**: Front Plant Sci
- **Year**: 2020
- **PMID**: [33362825](https://pubmed.ncbi.nlm.nih.gov/33362825/)
- **DOI**: [10.3389/fpls.2020.595376](https://doi.org/10.3389/fpls.2020.595376)
- **PMC**: [PMC7755932](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7755932/)
- **Study type**: other
- **Delivery route**: in vitro
- **Effect reported**: positive

## Delivery context

This is basic research at the cellular or molecular level. For human application, inhalation is the most promising delivery route, but inhalation carries explosion risk and concentration matters (empirical LFL of 10%; high-concentration devices are not recommended).

## Safety notes

This is basic research at the cellular or molecular level. For human application, inhalation is the most promising delivery route, but inhalation carries explosion risk and concentration matters (empirical LFL of 10%; high-concentration devices are not recommended).

See also:
- [Inhalation concentration and LFL / UFL](https://h2-papers.org/en/safety-notes/inhalation-concentration)
- [Consumer Affairs Agency accident cases](https://h2-papers.org/en/safety-notes/accident-cases)
- [Inhalation safety threshold lineage](https://h2-papers.org/en/safety-notes/lineage)

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> **Cite as**: H2 Papers — PMID 33362825. https://h2-papers.org/en/papers/33362825
> **Source**: PubMed PMID [33362825](https://pubmed.ncbi.nlm.nih.gov/33362825/)