Receptor-like protein kinases in plants: Post-translational regulation and functional effects.
Li Y, Wang X, Lu D, Gou X, Wei Z
Plant Signaling
Tweaking these molecular switches could give scientists a precise toolkit to breed crops — your wheat, rice, and soybeans — that resist disease and tolerate drought without the blunt-force approach of traditional genetic modification.
Plants have special proteins studded on their cell surfaces that work like antennas, detecting signals from the outside world — whether that's a fungal attack, drought stress, or a growth hormone. Scientists have now mapped the many ways plants chemically tag and modify these antenna proteins to turn them on or off, much like toggling switches. Even more surprising, some of these proteins get physically cut apart, and the pieces travel inside the cell to take on completely different jobs in unexpected locations.
Key Findings
RLKs are regulated by at least 7 distinct types of chemical modification, including phosphorylation, ubiquitination, glycosylation, lipid anchoring, SUMOylation, and pathogen-triggered acetylation and uridylylation.
Multiple RLKs undergo proteolytic cleavage that releases a truncated kinase fragment, which then migrates to specific subcellular compartments to carry out non-canonical signaling functions.
These mobile kinase modules spatially and temporally expand RLK signaling beyond the cell surface, representing a broader signaling repertoire than previously recognized.
chevron_right Technical Summary
Plants use special surface proteins called receptor-like kinases (RLKs) to sense and respond to their environment. This review reveals how these proteins are controlled through multiple chemical tagging and cutting mechanisms, and how fragments of these proteins can travel to different parts of the cell to carry out entirely new functions — with implications for engineering more resilient crops.
Abstract Preview
Receptor-like protein kinases (RLKs) serve as critical regulators in diverse biological processes, ranging from modulation of growth and development to responses to complicated environmental stimul...
open_in_new Read full abstractAbstract copyright held by the original publisher.
Was this useful?
Chloroplast Genome Editing Eliminates Gluten Immunogenicity in Triticum aestivum
It could mean that people with celiac disease — roughly 1 in 100 worldwide — may one day safely eat bread made from real wheat, without sacrificing the taste...