Potassium Phosphite Activates Components Associated with Constitutive Defense Responses in Coffea arabica Cultivars

Phosphites have been used as inducers of resistance, activating the defense of plants and increasing its ability to respond to the invasion of the pathogen. However, the mode of action of phosphites in defense responses has not yet been fully elucidated. The objective of this study was to evaluate t...

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Bibliographic Details
Published in:Molecular biotechnology 2023-11, Vol.65 (11), p.1777-1795
Main Authors: de Fátima Pereira Silva, Priscilla, de Resende, Mário Lúcio Vilela, Reichel, Tharyn, de Lima Santos, Mariana, dos Santos Botelho, Deila Magna, Ferreira, Eric Batista, Freitas, Natália Chagas
Format: Article
Language:English
Subjects:
Biochemistry
Biological Techniques
Biotechnology
Cell Biology
Chemistry
Chemistry and Materials Science
Coffee
Cultivars
Defense
Gene expression
Human Genetics
Inorganic salts
Mode of action
Original Paper
Phenolic compounds
Phenols
Potassium
Protein Science
Reactive oxygen species
Rust fungi
Salicylic acid
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Summary:Phosphites have been used as inducers of resistance, activating the defense of plants and increasing its ability to respond to the invasion of the pathogen. However, the mode of action of phosphites in defense responses has not yet been fully elucidated. The objective of this study was to evaluate the effect of potassium phosphite (KPhi) in coffee cultivars with different levels of resistance to rust to clarify the mechanism by which KPhi activates the constitutive defense of plants. To this end, we studied the expression of genes and the activity of enzymes involved in the defense pathway of salicylic acid (SA) and reactive oxygen species (ROS), in addition to the levels of total soluble phenolic compounds and soluble lignin. Treatment with KPhi induced constitutive defense responses in cultivars resistant and susceptible to rust. The results suggest that KPhi acts in two parallel defense pathways, SA and ROS, which are essential for the induction of systemic acquired resistance (SAR) when activated simultaneously. The activation of the mechanisms associated with defense routes demonstrates that KPhi is a potential inducer of resistance in coffee plants. Graphical Abstract
ISSN:1073-6085
1559-0305
DOI:10.1007/s12033-023-00683-5