Scientists find a gene that helps wheat survive drought
Xiang J, Wang J, Li L, Lu X, Yu Z
Crop Improvement
The bread wheat that ends up in your flour depends on genes like this one to keep yielding grain even when rain doesn't show up, and breeders can now use it to build tougher varieties without sacrificing harvest size.
Researchers found a gene in wheat called TaGATA5 that acts like an internal drought alarm and defense system. When wheat plants have more of this gene active, they hold onto water better, suffer less cell damage, and survive dry spells at higher rates, while plants missing the gene wilt and struggle. Best of all, boosting this gene didn't shrink the harvest, which makes it a promising target for breeding drought-tough wheat.
Key Findings
TaGATA5 expression is induced by drought-mimicking PEG treatment, salt (NaCl), and the stress hormone abscisic acid (ABA)
Overexpressing TaGATA5 increased survival, reduced water loss, lowered reactive oxygen species and MDA damage, and boosted SOD antioxidant activity; knockout plants showed the opposite, weaker drought tolerance
TaGATA5 physically interacts with TaCOP9-2A, another positive regulator of drought tolerance, and overexpression caused no negative effects on yield-related traits in greenhouse tests
chevron_right Technical Summary
Scientists identified a wheat gene, TaGATA5, that helps plants survive drought by reducing water loss and cell damage, without hurting crop yield. This could lead to new drought-resistant wheat varieties as water scarcity threatens global food production.
Abstract Preview
Original paper
TaGATA5 acts as a positive regulator of drought tolerance in wheat.
Drought poses a serious challenge to global crop production. Identifying drought tolerance genes underpins the breeding of drought-resilient crop varieties. GATA transcription factors (TFs) are rec...
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