Free amino acid production in response to selenium nanoparticles in rice plants
Vol. 134 No. 1D (2025), Original Article
Vol. 134 No. 1D (2025)

Free amino acid production in response to selenium nanoparticles in rice plants

Original Article
https://doi.org/10.26459/hueunijns.v134i1D.7812
Published 2025-12-24
Nga T.P. Mai*
University of Science and Technology of Hanoi (USTH), Vietnam Academy of Science and Technology (VAST)
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Keywords

axit amine
sắc kí lỏng cao áp
cây lúa
nano selenium
stress amino acid
high-performance liquid chromatography
rice
selenium nanoparticles
stress

How to Cite

1.
MAI NT. Free amino acid production in response to selenium nanoparticles in rice plants. hueuni-jns [Internet]. 2025Dec.24 [cited 2026Feb.5];134(1D):49-56. Available from: https://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/7812
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Abstract

Rice (Oryza sativa L.) is the primary food source for nearly half of the world’s population. Selenium nanoparticles (SeNPs) have emerged as promising agents in plant science because of their ability to mitigate both biotic and abiotic stresses, thereby enhancing plant productivity. Free amino acids (FAA) are key metabolites involved in plant stress responses and homeostatic regulation. The present study investigated the FAA profiles in response to SeNP treatment doses ranging from 0 to 25 ppm in two-week-old rice plants. The content of FAA was determined by means of high-performance liquid chromatography. The results demonstrated a dose-dependent increase in FAA accumulation, with the highest content when treated with 25 ppm of SeNPs. The maximum FAA content in shoots is approximately 33 mg/g dry weight, compared with 11–13 mg/g in roots. Moreover, increased concentration of SeNPs stimulated total FAA production more significantly. The aspartate family constituted the largest fraction of total FAA, comprising approximately 50% in the 25 ppm treatment. Additionally, essential amino acid levels increased dramatically with higher SeNP concentrations, reaching approximately 23 mg/g in shoots when treated with 25 ppm of SeNPs. The accumulation of lysine, threonine, and serine was notably enhanced in response to SeNP treatment, suggesting their involvement in protective or compensatory metabolic pathways under stress conditions. Among the FAAs, lysine exhibited the highest level of accumulation, indicating a potentially prominent role in the plant’s adaptive response to SeNP-induced stress. These findings highlight the SeNP-induced modulation of FAA metabolism in rice, suggesting a potential mechanism for enhancing stress resilience through targeted amino acid biosynthesis.

https://doi.org/10.26459/hueunijns.v134i1D.7812
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