Abstract
In higher plants, several lines of evidence suggest that long non-coding RNAs (lncRNAs) may play important roles in the regulation of various biological processes by regulating gene expression. In this study, we identified a total of 521 lncRNAs, classified as intergenic, intronic, sense, and natural antisense lncRNAs, from RNA-seq data of drought-exposed tomato leaves. A further 244 drought-responsive tomato lncRNAs were predicted to be putative targets of 92 tomato miRNAs. Expression pattern and preliminary functional analysis of potential mRNA targets suggested that drought-responsive tomato lncRNAs play important roles in a variety of biological processes via lncRNA–mRNA co-expression. Taken together, these data present a comprehensive view of drought-responsive tomato lncRNAs that serve as a starting point for understanding the role of long intergenic non-coding RNAs in the regulatory mechanisms underlying drought responses in crops.
Highlights
Because the world population is increasing, the global food demand is expected to approximately double by the year 2050 [1]
9, 629 the molecular mechanisms of tomato long non-coding RNAs (lncRNAs) responses to drought stress,4 the of 11 raw reads from RNA-seq data were analyzed
We identified and characterized 521 putative lncRNAs expressed in drought-treated tomato leaves
Summary
Because the world population is increasing, the global food demand is expected to approximately double by the year 2050 [1]. Meeting global food needs will require a substantial understanding of the climatic factors influencing agricultural production. Important in this regard is understanding how climate extremes caused by global warming impact crop yields. A recurring phenomenon with major impacts on natural systems, is one of the major widespread climatic extremes that negatively affect agricultural production [2,3]. Crops display various physiological and biochemical responses, including stomatal movement (the opening or closing of stomata), morphological changes (repression of cell growth and development),and alteration in biosynthetic pathways, antioxidant pathways, and respiration pathways; all of these aid survival in this unfavorable climate [5]. Understanding drought-induced molecular and physiological mechanisms is necessary for successful yield protection in the context of drought
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