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Transcriptomic difference between the wild type red-fruited tomato and its yellow-fruited mutant

ABSTRACT: Background: Fruit color is an important quality trait for nutrition value in tomato (Solanum lycopersicum) and has attracted huge attention for a long time. In order to dissect the yellow-fruit color of a novel tomato mutant n3122, we compared the dynamic transcriptome of the fruit pericarps from the mutant n3122 and its wild type red-fruited tomato cultivar M82. Results: The transcriptomes of fruits from M82 35 DPA (Days Post Anthesis), M82 47 DPA, M82 54 DPA, n3122 35 DPA, n3122 47 DPA, n3122 54 DPA and n3122 60 DPA were sequenced using an Illumina Hiseq 2000 sequencing platform. A total of 5568 differentially expressed genes (DEGs) were commonly identified in the four pairwise comparisons of M82_35 DPA vs n3122_35 DPA, M82_47 DPA vs n3122_47 DPA, M82_54 DPA vs n3122_54 DPA and M82_47 DPA vs n3122_60 DPA. Further Gene Ontology (GO) enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses revealed that carotenoids biosynthesis, ethylene biosynthesis and signaling transduction, and transcription factors associated fruit ripening were different between M82 and n3122 which might be the underlying mechanisms for the yellow-fruit color of tomato. Conclusions: This research provided a global data set of dynamic transcriptomic changes during fruit development and ripening for the wild type red-fruited tomato cultivar M82 and its yellow-fruited mutant n3122, and offered a base for elucidating the molecular mechanisms underlying tomato red/yellow fruit color mutation.

ORGANISM(S): Solanum lycopersicum

PROVIDER: GSE73908 | GEO | 2017/04/10

SECONDARY ACCESSION(S): PRJNA298413

REPOSITORIES: GEO

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Project description:Gene-to-gene coexpression analysis is a powerful approach to infer function of uncharacterized genes. To perform non-targeted coexpression analysis of tomato genes, we collected a developmental gene expression dataset using various tissues of tomato plant. Expression data are collected from 24 different tissue types including root, hypocotyl, cotyledon, leaf at different stages, and fruit tissues at 4 different ripening stages from 4 different Solanum lycopersicum cultivars. Fruits were separated to the flesh and the peel. These two tissue types indeed showed remarkably different gene expression profiles. We also collected data from 4 different ripening stages (mature green, yellow, orange, and red) to detail the changes during ripening. By using this gene expression dataset, we calculated pair-wise Pearsonâs correlation coefficients, and performed network-based coexpression analysis. The analysis generated a number of coexpression modules, some of which showed an enrichment of genes associated with specific functional categories. This result will be useful in inferring functions of uncharacterized tomato genes, and in prioritizing genes for further experimental analysis. We used Affymetrix GeneChip Tomato genome Arrays to detail the global gene expression change using 24 different tomato tissue types (67 hybridizations). We collected gene expression data from 24 different tomato tissue types using 67 hybridizations. Root, hypocotyl, cotyledon, and leaf were sampled from 3-week-old or 5-weekâold plant of Solanum lycopersicum cultivar Micro-Tom. Fruit tissues were sampled from S. lycopersicum cultivars Micro-Tom, Anthocyanin fruit (Aft, LA1996), Line27859, and Momotaro 8 (Takii, Japan). From Micro-Tom fruit, the peel and the flesh were separately sampled from 4 different ripening stages: mature green (MG, approximately 30 day after anthesis), yellow (Y, approximately 35 days after anthesis), orange (O, approximately 38-40 days after anthesis), and red (R, approximately 45-48 days after anthesis). From fruits of Aft and Line27859, the peel and the flesh were sampled at mature green (MG, approximately 40 days after anthesis) and red (R, approximately 50-55 days after anthesis) stages. From Momotaro 8, the peel and the flesh were sampled at red (R, 50- approximately 50-55 days after anthesis) stages. For each tissue type, 2-4 biological replicates were made in RNA preparation.

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Transcriptomic difference between the wild type red-fruited tomato and its yellow-fruited mutant

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