Entries by Amna Mhamdi

Keep sugar away to stay active: glycosylation of methyl salicylate shuts down systemic signaling

Plant hormones are frequently modified by glycosylation, hydroxylation, methylation and other conjugations, and these modifications can alter the hormone’s activity and stability (Wang et al., 2019). The phytohormone salicylic acid orchestrates effective defense and mediates local and systemic-acquired resistance (SAR) against biotrophic pathogens such as the bacterium Pseudomonas syringae. Reversible glucose conjugation of salicylic acid […]

A novel specialized immune player: BSK5 is required for restricting pathogen progression

Amna Mhamdi, Ghent University, Department of Plant Biotechnology and Bioinformatics, and VIB Center for Plant Systems Biology, 9052 Ghent, Belgium Defense reactions are the fascinating result of a complex network between signals, receptors and effectors, where any missed nodes may spell disaster. At the cell surface, receptors and receptor-like kinases (RLK) recognize ligands and activate signaling […]

Managing Competing Interests: Partitioning S between Glutathione and Protein Synthesis

Sulfur (S) is an essential element for cell function and responses to the environment. The primary S source is sulfate, which, following uptake by specific transporters, is reduced and incorporated into the amino acids Cysteine (Cys) and Methionine, and thereafter into proteins and peptides, including the multifunctional tripeptide thiol glutathione (Takahashi et al., 2011). Cys […]