Evaluation  of sunflower seed priming with gamma-aminobutyric acid-capped silver nanoparticles produced by the photoreduction method

Isabela Santos Lopes; Lilia Coronato Courrol

doi:10.1117/12.3017479

18 June 2024 Evaluation of sunflower seed priming with gamma-aminobutyric acid-capped silver nanoparticles produced by the photoreduction method

Isabela Santos Lopes, Lilia Coronato Courrol

Author Affiliations +

Proceedings Volume 13015, Photosensitive Materials and their Applications III; 1301519 (2024) https://doi.org/10.1117/12.3017479
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Conference Poster

Abstract

This study explores the application of GABA-functionalized silver nanoparticles (GABAAgNPs) in nanopriming, a technique used to improve seed germination, accelerate seedling growth, and enhance plant stress tolerance. GABAAgNPs were characterized using diverse techniques, including UV-Vis, FTIR, XRD, TEM, Zeta potential, and DLS. Scanning electron microscopy (SEM) was also used to analyze the seed coat and fluorescence spectroscopy to map chlorophyll content in seedlings and nanoparticle toxicity. The results revealed the ability of GABAAgNPs to induce pore formation in the seed coat, facilitating water uptake and triggering germination processes. Furthermore, the investigation revealed that GABA undergoes metabolism within plant cells, generating glutamate. This glutamate serves as a precursor for the synthesis of aminolevulinic acid (ALA), which ultimately contributes to chlorophyll production, as evidenced by the increased vigor index and improved chlorophyll fluorescence. This work demonstrates the potential of GABAAgNPs as a novel and promising approach to promote seed germination and enhance plant resilience in sunflowers.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Isabela Santos Lopes and Lilia Coronato Courrol "Evaluation of sunflower seed priming with gamma-aminobutyric acid-capped silver nanoparticles produced by the photoreduction method", Proc. SPIE 13015, Photosensitive Materials and their Applications III, 1301519 (18 June 2024); https://doi.org/10.1117/12.3017479

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