@Article{phyton.2023.026515,
AUTHOR = {Tahsin Shoala, Basma H. Amin, Ismail A. S. Rashid, Fayz A. Abdel-Rahman, Mohamed E. Khalil, Khamis Youssef},
TITLE = {The Potential Efficacy of Glycyrrhizic Acid and Its Nanostructure Against Brown Rot of Peach fruits},
JOURNAL = {Phyton-International Journal of Experimental Botany},
VOLUME = {92},
YEAR = {2023},
NUMBER = {4},
PAGES = {1139--1152},
URL = {http://www.techscience.com/phyton/v92n4/51247},
ISSN = {1851-5657},
ABSTRACT = {Production of peaches (<i>Prunus persica</i> (L.) Batsch) for both local market and export is increasing each year in
Egypt. Brown rot disease, caused by <i>Monilinia laxa</i> and <i>Monilinia fructigena</i>, is considered one of the most
important postharvest rots affecting peaches in Egypt and economic losses are increasing. Antifungal activity
of glycyrrhizic acid nanoparticles (GA-NPs) and glycyrrhizic acid (GA) at 0.2 and 0.4 mmol/L was investigated
as a control for both these brown rot pathogens on peach fruits in both <i>in vitro</i> and <i>in vivo</i> studies. In the <i>in vitro</i>
studies, GA-NPs were the most effective as shown by the ability to decrease linear growth of both brown rot
pathogens in potato dextrose agar (PDA) amended with 0.4 mmol/L GA-NPs. Micrographs of <i>M. fructigena</i>
exposed to 0.4 mmol/LGA showed mycelial deformations, nodule formation, detachment of the cell wall, shrinkage and inhomogeneous cytoplasmic materials with large vacuoles. Mycelium of <i>M. laxa</i> exposed to 0.4 mmol/
LGA-NPs resulted in thinner and distorted hyphae, nodule formation, cell wall thinning, and swellings. The GANPs and GA treatments improved fruit quality by maintaining firmness and total soluble solids (TSS). GA-NPs
were more effective in decreasing decay incidence than their bulk material. The 0.4 mmol/L GA-NPs completely
inhibited the disease on naturally infected peach fruits for both seasons of 2018 and 2019. Furthermore,
0.4 mmol/L GA-NPs reduced the disease incidence in inoculated fruits by 95 (<i>M. laxa</i>) and 88% (<i>M. fructigena</i>)
in 2018 season and 96 (<i>M. laxa</i>) and 85% (<i>M. fructigena</i>) in 2019 season. In conclusion, GA-NPs could enhance
the resistance of peaches against brown rot caused by <i>M. laxa</i> and <i>M. fructigena</i>.},
DOI = {10.32604/phyton.2023.026515}
}