Differential expression of long-noncoding RNAs under drought stress in tomato (Solanum lycopersicum).
Aydın M, Urhan EK, Şahin F, Harvey AJ
Climate Adaptation
Every tomato you've ever grown from seed carries hidden drought-survival switches — and researchers just found nearly 270 of them, bringing us closer to varieties that won't collapse mid-August when the rain stops.
Plants have a hidden layer of instruction molecules that don't make proteins but still control how genes behave — think of them as volume knobs for other genes. Researchers compared a drought-tough tomato variety to a fragile one and tracked which of these instruction molecules turned up or down during a water shortage. Three stood out as especially important, linked to sugar transport, stress proteins, and how the plant processes its own genetic messages.
Key Findings
269 drought-responsive non-coding RNA molecules were identified in tomato: 124 turned up and 145 turned down under water stress.
Three specific molecules (XR_003244833.1, XR_003247168.1, XR_743350.3) were linked to the sorbitol sugar pathway, a stress-transport protein, and RNA splicing machinery — all key drought-response processes.
Drought-tolerant cultivar Falcon and drought-susceptible cultivar SC2121 showed measurable differences in shoot height, root length, soluble protein, and water content, confirming the physiological reality behind the molecular differences.
chevron_right Technical Summary
Scientists identified 269 RNA molecules in tomato plants that switch on or off during drought, pointing to molecular switches that help some varieties survive water stress better than others. These findings could guide breeders toward drought-resilient tomatoes without traditional trial-and-error.
Abstract Preview
Long non-coding RNAs (lncRNAs) have emerged as crucial regulators in plant responses to abiotic stresses, including salinity, drought, heavy metals, and temperature fluctuations. The functional cha...
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The tomato is a plant whose fruit is an edible berry that is eaten as a vegetable. The tomato is a member of the nightshade family that includes tobacco, potato, and chili peppers. It originated from western South America, and may have been domesticated there, in Mexico, or in Central America. Th...