ORIGINAL RESEARCH article
Front. Plant Sci.
Sec. Crop and Product Physiology
Volume 16 - 2025 | doi: 10.3389/fpls.2025.1621007
This article is part of the Research TopicUnveiling the Potential of Biostimulants in Agriculture to Enhance Plant Stress Responses and ProductivityView all articles
Auxin mediated synthesis of gold nanoparticles: A novel approach to enhance shoot and root growth in Pearl millet
Provisionally accepted
- 1Amity University Rajasthan, Jaipur, India
- 2Amity University Uttar Pradesh, Noida, India, Noida, India
- 3Maharana Pratap University of Agriculture & Technology, Udaipur, udaipur, India
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Pearl millet (Pennisetum glaucum), a key crop in arid and semi-arid regions, is often challenged by poor root development due to waterlogging, soil compaction, and nutrient deficiencies. Nanobionics offers a solution using gold nanoparticles (AuNPs) to enhance root and shoot growth. This study synthesised AuNPs using the auxins Indole-3-acetic acid (IAA) and Indole-3-butyric acid (IBA) as reducing and stabilising agents. The synthesised AuNPs were characterised using UV-visible spectrophotometry, FTIR, SEM, zeta potential analysis, and DLS.In-vitro treatments with IAA-and IBA-stabilised AuNPs significantly improved growth parameters in pearl millet. The control group showed shoot and root lengths of 2 cm and 3.5 cm, respectively, while IAA-stabilised AuNPs resulted in greater shoot growth (5.25 cm) and root growth (6.75 cm).IBA-stabilised AuNPs increased shoot growth by 4.75 cm and root growth by 7.75 cm. No phytotoxicity was observed, confirming the safety and efficacy of this treatment. These results suggest that IAA-and IBA-stabilised AuNPs are promising growth enhancers for pearl millet, particularly in stress-prone environments.
Keywords: Nanobionics, gold nanoparticles, Indole-3-butyric acid, indole-3-acetic acid, phytotoxicity
Received: 30 Apr 2025; Accepted: 22 Jul 2025.
Copyright: © 2025 Chaudhary, Yadav, Jain and Verma. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Kumar Sambhav Verma, Amity University Rajasthan, Jaipur, India
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