Plant enzymes act as stress sensors that flip survival genes on
Tie J, Xu T, Cheng L, Li T
Climate Adaptation
Every tomato, wheat stalk, or backyard perennial that shrugs off a heat wave or dry spell is relying on these exact molecular switches to reprogram its genes on the fly, and cracking that code could lead to tougher varieties for gardeners and farmers alike.
Plants can't run from bad weather, so they've evolved a clever trick: special proteins that chemically tag the spools of DNA inside their cells, loosening or tightening them to control which genes turn on during stress. This review pulls together what scientists know about these tagging proteins, called histone acetyltransferases, across everything from drought and salty soil to blistering heat, cold snaps, and harsh sunlight. The hope is that understanding these internal switches could help breeders design crops that handle stress better, without altering the plant's core genetic code.
Key Findings
Reviews multiple plant HAT families (GNAT, MYST, TAFII250, and p300/CBP-related proteins) and how their structure determines which proteins they modify
HATs regulate stress responses to salt, drought, temperature extremes, and light/UV-B through both histone and non-histone protein acetylation
Identifies crosstalk between HAT enzymes and other epigenetic and metabolic pathways, plus unresolved questions about substrate selection and multi-stress responses in non-model species
chevron_right Technical Summary
Scientists reviewed how a family of plant enzymes called histone acetyltransferases act as molecular switches, helping plants sense drought, salt, heat, cold, and intense light, then turn on the right genes to survive. Understanding these switches could help breeders engineer hardier crops without changing the plants' actual DNA sequence.
Abstract Preview
Original paper
Histone acetyltransferases as integrative epigenetic regulators of plant abiotic stress responses.
This article reviews how histone acetyltransferases (HATs) regulate plant responses to salt, drought, temperature, and light/UV-B stresses through histone and non-histone acetylation. Abiotic stres...
open_in_new Read full abstractAbstract copyright held by the original publisher.
Was this useful?
Want to tell us more? (optional)
Thanks for the note!
Something went wrong — please try again.
Too many submissions. Try again in an hour.
Gene editing removes 97% of celiac-triggering proteins from bread wheat
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...
Crop-improvement refers to the systematic enhancement of plant varieties through selective breeding, genetic modification, and biotechnological approaches to develop cultivars with superior agronomic, nutritional, or environmental traits. This field is essential for addressing global food security,
arrow_forward Explore topic