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Essential Oils and Antagonistic Microorganisms as Eco-Friendly Alternatives for Coffee Leaf Rust Control

Journal

PLANTS-BASEL
Volume 12, Issue 20, Pages -

Publisher

MDPI
DOI: 10.3390/plants12203519

Keywords

action mechanism; biocontrol; Hemileia vastatrix; incidence; severity

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Coffee leaf rust is a disease that significantly affects the coffee industry, reducing yield by up to 60%. This study provides insights into the current framework of the disease, its impact on various areas, and the effectiveness of biological control systems.
Coffee leaf rust (CLR) is caused by the biotrophic fungus Hemileia vastatrix Berk. & Br., a disease of economic importance, reducing coffee yield up to 60%. Currently, CLR epidemics have negatively impacted food security. Therefore, the objective of the present research study is to show a current framework of this disease and its effects on diverse areas, as well as the biological systems used for its control, mode of action, and effectiveness. The use of essential plant oils and antagonistic microorganisms to H. vastatrix are highlighted. Terpenes, terpenoids, and aromatic compounds are the main constituents of these oils, which alter the cell wall and membrane composition and modify the basic cell functions. Beneficial microorganisms inhibit urediniospore germination and reduce disease incidence and severity. The antagonistic microorganisms and essential oils of some aromatic plants have great potential in agriculture. These biological systems may have more than one mechanism of action, which reduces the possibility of the emergence of resistant strains of H. vastatrix.

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