The Roles of Cruciferae Glucosinolates in Disease and Pest Resistance

Abstract

With the expansion of the area under Cruciferae vegetable cultivation, and an increase in the incidence of natural threats such as pests and diseases globally, Cruciferae vegetable losses caused by pathogens, insects, and pests are on the rise. As one of the key metabolites produced by Cruciferae vegetables, glucosinolate (GLS) is not only an indicator of their quality but also controls infestation by numerous fungi, bacteria, aphids, and worms. Today, the safe and pollution-free production of vegetables is advocated globally, and environmentally friendly pest and disease control strategies, such as biological control, to minimize the adverse impacts of pathogen and insect pest stress on Cruciferae vegetables, have attracted the attention of researchers. This review explores the mechanisms via which GLS acts as a defensive substance, participates in responses to biotic stress, and enhances plant tolerance to the various stress factors. According to the current research status, future research directions are also proposed.

The MIK2/SCOOP Signaling System Contributes to Arabidopsis Resistance Against Herbivory by Modulating Jasmonate and Indole Glucosinolate Biosynthesis

“…Therefore, MIK2 exhibits a unique dual recognition ability by perceiving conserved peptide motifs from endogenous phytocytokines and microbial pathogens. Robust immunity of cruciferous plants against several phytopathogenic fungi, including F. oxysporum , relies on functional glucosinolate biosynthesis ( Humphry et al, 2010 ; Liu et al, 2021 ). Hence, the involvement of SCOOP peptides as potential modulators of glucosinolate biosynthesis to strengthen immunity against fungal pathogens is an additional intriguing aspect for future investigations.…”

Anything New under the Sun? An Update on Modulation of Bioactive Compounds by Different Wavelengths in Agricultural Plants

“…GSLs represent essential defensive molecules against biotic factors, due to their strong antibacterial and antifungal properties [ 119 , 120 ]. However, to be converted into their active, toxic form (called isothiocyanates), thus performing their biological function, the thioglucose residue of the GSL molecule needs to be removed by the activity of specific β-thioglucosidases called myrosinases [ 119 ].…”

The Effect of Photoperiod on Necrosis Development, Photosynthetic Efficiency and ‘Green Islands’ Formation in Brassica juncea Infected with Alternaria brassicicola

“…However, a peak of jasmonic acid (JA), a hormone that is required in plant defence against necrotrophic fungi such as A. brassicicola, is observed in the middle of a light period in Arabidopsis [38]. Lack of a dark period may enhance plant resistance against A. brassicicola and also through extensive production of metabolites with antifungal properties, e.g., phenolic compounds or, characteristic for Brassicas, glucosinolates [39,40]. Glucosinolate biosynthesis is also regulated by light and it has been demonstrated that dark exposure decreases its content in Chinese cabbage seedlings [40,41].…”