ArticleMolecular biology reports2026
Differential expression of long-noncoding RNAs under drought stress in tomato (Solanum lycopersicum).
Article in Molecular biology reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundLong 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 characterization of drought-responsive lncRNAs in Solanum lycopersicum remains incomplete and poorly understood. In this study, we performed transcriptome-wide identification and functional analysis of lncRNAs in two tomato cultivars, drought-tolerant variety Falcon, and drought-susceptible SC2121, when subjected to drought stress. METHODS AND
resultsPhysiological parameters-such as shoot height, root length, soluble protein, and water content- were measured to evaluate drought-induced changes in the tomato varieties. In addition, five lncRNAs were selected for reverse transcription quantitative PCR (RT-qPCR) analysis. Using high-throughput RNA sequencing, we identified 269 drought-responsive lncRNAs, including 124 upregulated and 145 downregulated transcripts. Interestingly, in tomato, predicted lncRNA-mRNA interactions suggest that XR_003244833.1, XR_003247168.1, and XR_743350.3 may be associated with the sorbitol (polyol) pathway, the ABC-2 type transporter protein, and the U11/U12 small nuclear ribonucleoprotein involved in the spliceosome complex, respectively.
conclusionsUsing high-throughput RNA sequencing, we identified 269 drought-responsive lncRNAs, including 124 upregulated and 145 downregulated transcripts. Interestingly, in tomato, predicted lncRNA-mRNA interactions suggest that XR_003244833.1, XR_003247168.1, and XR_743350.3 may be associated with the sorbitol (polyol) pathway, the ABC-2 type transporter protein, and the U11/U12 small nuclear ribonucleoprotein involved in the spliceosome complex, respectively. Accordingly, lncRNAs may be actively involved in the drought stress response and regulate key adaptive pathways through interactions with protein-coding genes. These findings provide new insights into the molecular mechanisms of drought tolerance in tomato and offer potential targets for the genetic improvement of stress-resilient cultivars.
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