Overexpression of the BAHD Acyltransferase-Like Protein gene OsDCR Enhances Salt Tolerance in Rice.
Liu X, Li L, Xu M, Lu N, Zhang Y
Crispr
Salt-damaged farmland is quietly swallowing rice paddies across South and Southeast Asia — the fields that feed half the world — and this gene could be the key to keeping those paddies productive for the next generation of farmers.
Rice plants have a gene that acts like a first-responder when their roots hit salty water. When scientists cranked that gene up, the plants survived saltier conditions; when they switched it off using gene-editing scissors, the plants wilted quickly. The gene works partly by raising the plant's own stress-relief hormone and by recruiting a helper protein — giving researchers a clear target for breeding tougher rice.
Key Findings
Rice plants engineered to overexpress OsDCR survived 150 mM NaCl stress with less oxidative damage and higher levels of the stress hormone ABA compared to normal plants.
CRISPR/Cas9 knockout of OsDCR produced salt-sensitive plants, confirming the gene is necessary for normal salt tolerance.
OsDCR physically interacts with a proline-rich protein called OsPRP3, which also promotes salt tolerance and acts downstream of OsDCR in the same pathway.
chevron_right Technical Summary
Scientists discovered that a rice gene called OsDCR boosts the plant's ability to survive salty soils — and that it does so by raising stress-hormone levels and teaming up with a partner protein. The findings open a practical path to breeding rice varieties that can thrive where soil salinity is making farmland unusable.
Abstract Preview
Salt stress is a major environmental challenge for global rice production because it disrupts ionic balance and induces oxidative damage. We investigated the role of the rice BAHD-acyltransferase-l...
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