Induction of Biochemical Changes in Santa Teriza Lime Leaves by Chitosan Application Influence Citrus Leaf Miner Damage

Ahmad, Batoul; Suleiman, Sawsan; Ahmad, Manzoor

doi:10.4236/ajps.2022.133025

Cited by 1 publication

(1 citation statement)

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“…In addition, it also plays a role in the thickening of the plant cell wall, which serves as a physical barrier to prevent colonization by pathogens [28]. A similar effect was found in the study by Ahmad et al [37], where PPO activity was induced by chitosan and was associated with a beneficial response in the control of citrus diseases, and the amount of total phenolic compounds was increased.…”

Section: Discussionsupporting

confidence: 68%

High-Density Chitosan Induces a Biochemical and Molecular Response in Coffea arabica during Infection with Hemileia vastatrix

López-Velázquez,

García-Morales,

López-Sánchez

et al. 2023

IJMS

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The coffee industry faces coffee leaf rust caused by Hemileia vastratix, which is considered the most devastating disease of the crop, as it reduces the photosynthetic rate and limits productivity. The use of plant resistance inducers, such as chitosan, is an alternative for the control of the disease by inducing the synthesis of phytoalexins, as well as the activation of resistance genes. Previously, the effect of chitosan from different sources and physicochemical properties was studied; however, its mechanisms of action have not been fully elucidated. In this work, the ability of food-grade high-density chitosan (0.01% and 0.05%) to control the infection caused by the pathogen was evaluated. Subsequently, the effect of high-density chitosan (0.05%) on the induction of pathogenesis-related gene expression (GLUC, POX, PAL, NPR1, and CAT), the enzymatic activity of pathogenesis-related proteins (GLUC, POX, SOD, PPO, and APX), and phytoalexin production were evaluated. The results showed that 0.05% chitosan increased the activity and gene expression of ß-1,3 glucanases and induced a differentiated response in enzymes related to the antioxidant system of plants. In addition, a correlation was observed between the activities of polyphenol oxidase and the production of phytoalexin, which allowed an effective defense response in coffee plants.

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Section: Discussionsupporting

confidence: 68%