Fungal Mitochondrial Reactive Oxygen Species (ROS) (Fungal mtROS)

Fungal mitochondria are a primary source of reactive oxygen species (ROS) within fungal cells. ROS are unstable, highly reactive molecules produced as byproducts of mitochondrial metabolism, particularly during electron transport chain (ETC) activity. In fungi, stimulation of mitochondrial ROS production can occur in response to environmental stressors, antifungal drugs, and host immune interactions. Elevated mitochondrial ROS can contribute to the fungicidal effects of certain antifungals. However, some fungi adapt by upregulating antioxidant defenses or altering ETC function to lower drug-induced ROS accumulation, which is linked with increased multidrug resistance. During infection, host innate immune cells generate mtROS, contributing to antimicrobial defense. Targeting fungal mitochondrial function or modulating mtROS levels represents a potential strategy for enhancing antifungal efficacy or overcoming resistance.

Other names

Mitochondrial ROS in FungiFungal mtROSReactive Oxygen Species produced by Fungal Mitochondria

ROS production induced by antifungals leads to oxidative damage of cellular components. Alteration of ETC function reduces ROS production, contributing to drug resistance. Host mtROS contributes to pathogen killing. ETC inhibitors can modulate drug-induced ROS generation.