The role of lipid peroxidation and lipoxygenase in the non-host disease resistance of rice

Deborah, S. D.; Palaniswami, A.; Velazhahan, R.

doi:10.1007/bf03543402

Cited by 1 publication

(1 citation statement)

References 17 publications

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“…Therefore, aldehyde levels, to some extent, can reflect the health status of plants. Aldehydes, in particular MDA, are already regarded as a biomarker for the quantitative analysis of lipid peroxidation in several studies [ 114 , 115 , 116 , 117 , 118 ]. Studies using model plants identified several enzymes with the detoxification capacity of aldehydes.…”

Section: Discussionmentioning

confidence: 99%

Lipid-Derived Aldehydes: New Key Mediators of Plant Growth and Stress Responses

Liang

Qian

Wang

et al. 2022

Biology

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Aldehydes, derivatives of lipids, are ubiquitously produced through non-enzymatic and enzymatic pathways in higher plants and participate in many physiological and biological processes. Increasing evidence demonstrates that aldehydes are involved in plants response to many abiotic stresses, such as light, drought, heat and nutrient deficiency. In plant cells, endogenously triggered or exogenously applied high concentrations of aldehydes can damage proteins and nucleic acid, disturb redox homeostasis, and consequently inhibit plant growth; therefore, they are considered cytotoxins. Aldehyde levels are also used as biomarkers to evaluate the health status of plants. Further genetic research shows that several enzymes have strong capacities to detoxify these electrophilic aldehydes. Small molecules, such as carnosine and glutathione, also exhibit the ability to scavenge aldehydes, effectively promoting plant growth. Recently, increasing evidence has shown that certain aldehydes at certain concentrations can upregulate survival genes, activate antioxidant responses, increase defense against pathogens and stimulate plant growth. This review summarizes recent studies of lipid-derived aldehydes in higher plants, mainly focusing on the generation pathway, toxic effects, and detoxification strategies. In addition, the signaling effects of aldehydes in plants are also discussed.

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