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Magnesium hydride acts as a convenient hydrogen supply to prolong the vase life of cut roses by modulating nitric oxide synthesis
Postharvest Biology and Technology ( IF 6.4 ) Pub Date : 2021-03-21 , DOI: 10.1016/j.postharvbio.2021.111526
Ying Li , Longna Li , Shu Wang , Yuhao Liu , Jianxin Zou , Wenjiang Ding , Hongmei Du , Wenbiao Shen

Hydrogen-rich water (HRW), normally produced by water electrolysis, is a major method for hydrogen gas (H2) delivery, and had beneficial outcomes in postharvest preservation of cut roses. Since the preparation of HRW is complicated and required a H2 generator, the development of a convenient hydrogen supply in horticulture is required. In this report, magnesium hydride (MgH2), a H2-releasing material used in hydrogen industry and medical research, was tested. Compared to HRW produced by electrolysis, release of H2 by MgH2 hydrolysis was more convenient and flexible. Similar to conventional HRW, MgH2 could contribute H2 and prolong the vase life of cut roses. This beneficial role of MgH2 was verified by the observed increase in water content, decreased lipid peroxidation, and increased antioxidant levels. Pharmacologic experiments showed that MgH2 mimicked the cut flower response of nitric oxide (NO)-releasing compound by triggering an increase in endogenous NO production. In contrast, the positive effects of MgH2 on cut flower vase life and lipid peroxidation were impaired by a NO scavenger and its synthetic inhibitor. This indicated a requirement for NO in the MgH2-mediated pathway for prolonged vase life of cut rose flowers. Therefore, this study identifies a new opportunity for the application of H2-releasing materials as an alternative approach for more convenient and flexible hydrogen supply in horticulture.



中文翻译:

氢化镁可通过调节一氧化氮的合成来方便地提供氢气,从而延长切花玫瑰的花瓶寿命。

通常通过水电解产生的富氢水(HRW)是输送氢气(H 2)的主要方法,并且在切玫瑰的收获后保存中具有有益的效果。由于HRW的制备很复杂并且需要H 2发生器,因此需要开发园艺中便利的氢供应。在此报告中,对氢化镁(MgH 2)(一种用于氢工业和医学研究的H 2释放材料)进行了测试。与通过电解产生的HRW相比,通过MgH 2水解释放H 2更为方便和灵活。与常规HRW相似,MgH 2可以贡献H 2并延长切玫瑰的花瓶寿命。MgH 2的这种有益作用已通过观察到的水含量增加,脂质过氧化作用降低和抗氧化剂含量增加得到证实。药理实验表明,MgH 2通过触发内源性NO生成的增加来模仿一氧化氮(NO)释放化合物的切花响应。相反,NO清除剂及其合成抑制剂削弱了MgH 2对切​​花花瓶寿命和脂质过氧化的积极作用。这表明在MgH 2介导的途径中需要NO才能延长玫瑰切花的花瓶寿命。因此,本研究确定了应用H 2的新机会。释放材料作为园艺中氢气更方便,更灵活供应的替代方法。

更新日期:2021-03-21
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