Crosstalk and reciprocal regulation between phosphorylation and ubiquitination mediated by receptor-like kinases and U-box E3 ligases during plant growth and environmental stress responses.
Li G, Peng Y, Sun M, Qin Z, Dai S
Summary
PubMedWhy it matters This matters because understanding how plants molecularly 'decide' to fight disease or tolerate drought could lead to crops that stay productive during heat waves and dry spells — keeping food on your table even as climates shift.
Plants are constantly making split-second decisions at the molecular level — should they grow, fight off a pathogen, or conserve water during a drought? This research maps out a control system involving two types of proteins that tag other proteins with chemical signals, essentially turning them on or off. By understanding how these two tagging systems talk to each other, scientists can begin to engineer plants that are better at surviving stress without sacrificing growth.
chevron_right Technical Details
Plants use two molecular 'switches' — phosphorylation and ubiquitination — to control how they grow and respond to stress. This review reveals how a pair of protein families (RLKs and PUB E3 ligases) work together to coordinate these switches across immunity, drought tolerance, root growth, and reproduction.
Key Findings
A core RLK-PUB protein module coordinates two major types of molecular signals (phosphorylation and ubiquitination) across at least four major biological processes: immunity, growth, reproduction, and drought response.
The RLK-PUB module plays a key role in regulating pattern recognition receptors (PRRs), which are the frontline sensors plants use to detect pathogens and trigger immune responses.
The review identifies unresolved regulatory mechanisms within known RLK-PUB modules, highlighting open research questions that could unlock new strategies for crop improvement.
Abstract Preview
Plant growth and environmental adaptation rely on precise regulation of signal transduction, in which phosphorylation and ubiquitination play critical roles as post-translational modifications (PTM...
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