The Antifungal Activity of Loquat ( Lindl.) Leaves Extract Against

Overview

Journal Front Nutr

Specialty Nutritional Sciences

Date 2021 Sep 7

PMID 34490318

Citations 6

Authors

Yuting Shen

Chuying Chen

Nan Cai

Ruopeng Yang

Jinyin Chen

Ibrahim Kahramanolu

Volkan Okatan

Kannan R R Rengasamy

Chunpeng Wan

Affiliations

Soon will be listed here.

Abstract

This study was performed to determine the antifungal activity of loquat ( Lindl) leaf extract (LLE) against the citrus postharvest pathogen (). The LLE exhibited an antifungal activity against , with a minimum inhibitory concentration (MIC) of 0.625 mg/ml and a minimum fungicidal concentration (MFC) of 1.25 mg/ml. Significant inhibitory effects of LLE on mycelial growth and spore germination of were seen in a dose-dependent manner. Simultaneously, to investigate possible antifungal mechanisms by LLE, we analyzed their influence on morphological changes, cell membrane permeability, cell wall and cell membrane integrity, and adenosine phosphates (ATP, ADP, and AMP) levels. Alterations, such as sunken surface and malformation, occurred in the LLE-treated spores. Furthermore, intracellular inclusion content decreased after LLE treatment, indicating an increase in cell membrane permeability. Besides, the LLE treatment induced a significant decline in the level of adenosine monophosphate (AMP), adenosine diphosphate (ADP), and adenosine triphosphate (ATP) with a noticeable addition of extracellular ATP, ADP, and AMP during the entire treatment period. Overall, the results manifested that the antifungal activity of LLE against can be attributed to the derangement of cell membrane permeability and disordered energy metabolism. This is the first report on the mechanism of antifungal activity of LLE and could be useful in the development of targeted fungicides from natural origin.

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