RT Journal Article
T1 Suppression of Chitin-Triggered Immunity by Plant Fungal Pathogens: A Case Study of the Cucurbit Powdery Mildew Fungus Podosphaera xanthii.
A1 Bakhat, Nisrine
A1 Vielba-Fernández, Alejandra
A1 Padilla-Roji, Isabel
A1 Martínez-Cruz, Jesús
A1 Polonio Escalona, Alvaro Acisclo
A1 Fernández-Ortuño, Dolores
A1 Pérez-García, Alejandro
K1 Relaciones planta-hongo
K1 Quitina
K1 Hongos fitopatógenos - Control
K1 Mildiu
AB Fungal pathogens are significant plant-destroying microorganisms that present an increasingthreat to the world’s crop production. Chitin is a crucial component of fungal cell wallsand a conserved MAMP (microbe-associated molecular pattern) that can be recognized by specificplant receptors, activating chitin-triggered immunity. The molecular mechanisms underlying theperception of chitin by specific receptors are well known in plants such as rice and Arabidopsis thalianaand are believed to function similarly in many other plants. To become a plant pathogen, fungihave to suppress the activation of chitin-triggered immunity. Therefore, fungal pathogens haveevolved various strategies, such as prevention of chitin digestion or interference with plant chitinreceptors or chitin signaling, which involve the secretion of fungal proteins in most cases. Sincechitin immunity is a very effective defensive response, these fungal mechanisms are believed to workin close coordination. In this review, we first provide an overview of the current understanding ofchitin-triggered immune signaling and the fungal proteins developed for its suppression. Second,as an example, we discuss the mechanisms operating in fungal biotrophs such as powdery mildewfungi, particularly in the model species Podosphaera xanthii, the main causal agent of powdery mildewin cucurbits. The key role of fungal effector proteins involved in the modification, degradation, orsequestration of immunogenic chitin oligomers is discussed in the context of fungal pathogenesisand the promotion of powdery mildew disease. Finally, the use of this fundamental knowledge forthe development of intervention strategies against powdery mildew fungi is also discussed
PB MDPI
YR 2023
FD 2023-07-21
LK https://hdl.handle.net/10630/32234
UL https://hdl.handle.net/10630/32234
LA eng
NO Bakhat, N., Vielba-Fernández, A., Padilla-Roji, I., Martínez-Cruz, J., Polonio, Á., Fernández-Ortuño, D., & Pérez-García, A. (2023). Suppression of Chitin-Triggered Immunity by Plant Fungal Pathogens: A Case Study of the Cucurbit Powdery Mildew Fungus Podosphaera xanthii. Journal Of Fungi, 9(7), 771. https://doi.org/10.3390/jof9070771
NO Partial funding for open access charge: Universidad de Málaga
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 28 feb 2026