Ontology highlight
ABSTRACT:
PROVIDER: PRJNA765571 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR16020765_1.fastq.gz | Fastqsanger.gz | |||
| SRR16020765_2.fastq.gz | Fastqsanger.gz | |||
| SRR16020766_1.fastq.gz | Fastqsanger.gz | |||
| SRR16020766_2.fastq.gz | Fastqsanger.gz | |||
| SRR16020767_1.fastq.gz | Fastqsanger.gz |
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Project description:Fleshy fruits evolved independently multiple times during angiosperm history, including the use of ethylene for the initiation and maintenance of ripening. ENCODE data of 355 transcriptome, 66 accessible chromatin, 160 histone and 45 DNA methylation profiles from eleven fleshy fruit species revealed three types of transcriptional feedback loops controlling ripening. Eudicots peach, papaya and melon evolved their circuits using carpel senescence NAC genes, whereas tomato, apple and pear utilized floral identity MADS genes derived from recent whole-genome-duplications. The monocot banana used both, forming a unique dual-loop circuit. Genes in these circuits and their tissue-specific H3K27me3 mark could be traced back to both dry fruits and ethylene-independent fleshy fruits, suggesting that the ethylene-dependent ripening mechanisms evolved from pre-existing genetic and epigenetic pathways in the ancestral angiosperms. FruitENCODE provides a comprehensive annotation of functional elements for fleshy fruit crops and new insight into the origins of climacteric fruit ripening.
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Project description:The tomato MADS-box FRUITFULL (FUL) homologs, FUL1 and FUL2, interact with the main ripening regulator RIPENING INHIBITOR (RIN). To clarify their role in fruit ripening, we generated FUL1/FUL2-suppressed transgenic lines by RNAi. We found that five transgenic lines bearing fruits that did not ripen normally: lycopene accumulation and increase of ethylene production were severely inhibited. We then performed next generation RNA sequencing (RNA-Seq) analysis of the fruits of a FUL1/FUL2-suppressed line (TF18) with those of the wild type (Ailsa Craig cultivar; AC) and rin mutant. The comparison of RNA-Seq data among them indicated that FUL1/FUL2-suppression significantly affected the expression of a larger portion of ripening-induced and -repressed genes than the rin mutation did. Moreover, the effect of FUL1/FUL2-suppression was observed not only in the fruits harvested at the wild type ripening age [45 days after pollination (DAP)] but also in those at the pre-ripening age (35 DAP). This suggests that the FUL homologs play an essential role in the regulation of fruit development and ripening, the role which covers a wider range of biological processes than RIN does. Differentially expressed genes (DEGs) between the wild type and TF18 fruits included known ripening-related genes such as ACS2 and ACS4 involved in ethylene production and PSY1 in carotenoid biosynthesis, consistent with the phenotype of TF18 fruits described above. The DEGs also included many direct RIN target genes, which supports the hypothesis that the FUL homologs regulate fruit ripening in a form of MADS-box complex with RIN. mRNA profiles of wild type (Ailsa Craig cultivar), rin mutant and FUL1/FUL2-suppressed tomato fruits harvested at 35DAP and 45 DAP were generated by next generation sequencing, in triplicate, using Illumina Hiseq2000.
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Project description:A custom oligoarray of Japanese pear (Pyrus pyrifolia) based on 9,812 independent ESTs from different tissues (fruits at various growth stages, vegetative and flower tissues) was designed and used for comprehensive investigation of gene expression before and during ripening (105 to 147 days after full bloom).
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Project description:Ripening is an important stage of fruit development to determine its quality as a diet. A tomato (Solanum lycopersicum) MADS-box transcription factor, RIPENING INHIBITOR (RIN), has been believed to serve as a regulator of ripening lying upstream of ethylene-dependent and ethylene-independent pathways. Here, we have conducted global gene expression analysis to comprehensively identify tomato genes whose expressions are affected by the rin mutation using microarray with RNA samples from the normal and rin mutant tomato fruits at the pre-ripening (mature green) and ripening (pink coloring) stages. By analysing this microarray data, we identified 342 of positively regulated and 473 negatively regulated genes by RIN, which showed >5 and <0.2 of the fold change ratio (FC) of normal fruits at the ripening stage relative to those at the pre-ripening stage, respectively, in a RIN-dependent manner. A chromatin immunoprecipitation (ChIP) analysis of the normal ripening tomatoes with the anti-RIN antibody revealed that the positively regulated gene set contained at least 13 direct RIN targets. We monitored global gene expression in normal (PK331 cultivar) and rin mutant (PK353 cultivar) tomatoes at the pre-ripening (mature green, G) and ripening (pink coloring, P) stages using microarray with three biological replicates for each sample.
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Project description:A custom oligoarray of Japanese pear (Pyrus pyrifolia) based on 9,812 independent ESTs from different tissues (fruits at various growth stages, vegetative and flower tissues) was designed and used for comprehensive investigation of gene expression before and during ripening (105 to 147 days after full bloom). Gene expression in fruit development of Japanese pear was measured from 105 to 147 days after full bloom (DAFB). 147 DAFB is the optimum maturity for eating. Two to three independent experiments were performed at each time (105 to 147 DAFB) using different trees for each experiment.
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Project description:The tomato (Solanum lycopersicum) MADS-box transcription factor RIPENING INHIBITOR (RIN) acts as a master regulator of tomato fruit ripening. We previously identified a direct RIN target gene Solyc07g052960, which encodes a putative GRAS family protein belonging to the SHORT-ROOT (SHR) branch, but its role was unknown. RNA interference (RNAi)-mediated gene silencing reduced Solyc07g052960 expression in transgenic fruits, but the fruits appeared to ripen normally. However, the transgenic fruits at the ripening stage showed a marked decrease of the expression levels of several ripening-induced genes, especially involved in cell wall modification and secondary metabolism. This suggests that Solyc07g052960 participates in the regulation of these processes as one component of the RIN-activated transcriptional cascade regulating fruit ripening in tomato. For a preliminary screening, we monitored global gene expression in tomato fruits from untransformed control (Ailsa Craig [AC] cultivar) and three transgenic lines with Solyc07g052960 knockdown by RNAi (lines T-7, T-22 and T-23) at the ripening (pink coloring) stage using microarray without biological replication.
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