Plant cells coordinate an internal relay team to survive salty soil
Das S, Arif Y, Mousavi H, Aronsson H, Bazihizina N
Climate Adaptation
If you've ever watered a container garden with hard tap water or gardened near a coastal road salted in winter, this is the cellular reason some plants bounce back and others don't.
When soil gets too salty, plant cells scramble to keep making and fixing proteins correctly, since salt throws that whole process into chaos. This review pulls together research on how different compartments inside the cell, like the ER and Golgi, pass messages back and forth using hormones and chemical tags to keep the plant alive. Understanding that conversation could help scientists breed crops that shrug off salty soil instead of wilting from it.
Key Findings
Salt stress disrupts protein homeostasis at every stage: synthesis, folding, modification, trafficking, and degradation across the nucleus, ribosomes, ER, and Golgi.
Four coordinated organelle responses are identified: chromatin/transcription reprogramming, selective translation with clearance of stalled proteins, unfolded protein response plus ER-associated degradation, and Golgi-driven glycosylation and secretion of ion transporters.
Two signaling layers tie the organelles together: post-translational modifications (phosphorylation, ubiquitination, SUMOylation, redox/nitrosative marks) and phytohormone/gasotransmitter signals (abscisic acid, nitric oxide, hydrogen sulfide, carbon monoxide, melatonin), offering candidate targets for breeding salt-resilient crops.
chevron_right Technical Summary
Salty soil stresses plants at the cellular level by jamming up how they build, fold, and recycle proteins. This review maps how different parts of plant cells talk to each other to cope, pointing scientists toward new targets for breeding salt-tolerant crops.
Abstract Preview
Original paper
Protein homeostasis and inter-organellar signaling under salt stress.
Salinity is a major abiotic constraint on plant growth, productivity, and global food security. It disrupts cellular protein homeostasis (proteostasis) at every step, from synthesis to degradation....
open_in_new Read full abstractAbstract copyright held by the original publisher.
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