Micro-nano bubble hydrogen water irrigation improves the Cd tolerance of Ipomoea aquatica Forssk.: Rhizosphere micro-biotas modulation and oxidative stress alleviation.
Xin Guo, Rui Chen, Hong Li, Guanlin Li, Qihang Zhao, Duo Wang, Jian Wang · Environmental pollution (Barking, Essex : 1987) · 2025
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H2HUBB TAKEAWAY
The application of exogenous hydrogen has been found to be beneficial for plant resistance to cadmium (Cd) stress; however, it is difficult to apply hydrogen-rich water for long-term application in agriculture due to the low solubility and rapid fugacity of H₂ in water. This source-grounded publication contributes evidence relevant to molecular hydrogen and is retained in a transparent general research category when a more specific study design is not supported by the indexed record.
How Molecular Hydrogen Was Addressed
The application of exogenous hydrogen has been found to be beneficial for plant resistance to cadmium (Cd) stress; however, it is difficult to apply hydrogen-rich water for long-term application in agriculture due to the low solubility and rapid fugacity of H₂ in water. The integration of micro-nano bubble hydrogen (MNBH) water with subsurface drip irrigation (SDI) technology could address such problems.
What the Publication Reported
Here, by focusing on a Cd-susceptible plant water spinach (Ipomoea aquatica Forssk.), the researchers found that MNBH (applied via an SDI system) significantly improved yield, plant height, and root morphological traits. Increased chlorophyll content and photosynthetic rate; and increased levels of metallothioneins and stress-response phytohormones (ABA and SA), which was helpful in scavenging reactive oxygen species, decreasing the uptake of Cd by the plants, and alleviating Cd-induced oxidative stress.