Cullin-based RING E3 ligases that use BTB/POZ-MATH (BPM) proteins as substrate receptors have been established over the last decade as critical regulators in plant development and abiotic stress tolerance. As such they affect general aspects of shoot and root development, flowering time, embryo development, and different abiotic stress responses, such as heat, drought and salt stress. To generate tools that can help to understand the role of CRL3 E3 ligases in plants, we developed a novel system using two conserved protein-binding motifs from BPM substrates to transiently block CRL3 activity. The work investigates and this novel approach, and shows that it can affect stress tolerance in plants as well as developmental aspects. It thereby can serve as a new tool for studying this E3 ligase in plants.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9763634PMC
http://dx.doi.org/10.1002/pld3.474DOI Listing

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