Reference - Detail
| RRC ID | 53888 |
|---|---|
| Author | Okabe Y, Yamaoka T, Ariizumi T, Ushijima K, Kojima M, Takebayashi Y, Sakakibara H, Kusano M, Shinozaki Y, Pulungan SI, Kubo Y, Nakano R, Ezura H. |
| Title | Aberrant Stamen Development is Associated with Parthenocarpic Fruit Set Through Up-Regulation of Gibberellin Biosynthesis in Tomato. |
| Journal | Plant Cell Physiol |
| Abstract |
Parthenocarpy, a process in which fruit set occurs without fertilization, leads to the production of seedless fruit. A number of floral homeotic mutants with abnormal stamen development exhibit parthenocarpic fruit set. Flower development is thought to repress ovary growth before anthesis. However, the mechanism of parthenocarpic fruit development caused by aberrant flower formation is poorly understood. To investigate the molecular mechanism of parthenocarpic fruit development in floral homeotic mutants, we performed functional analysis of Tomato APETALA3 (TAP3) by loss-of-function approaches. Organ-specific promoter was used to induce organ-specific loss of function in stamen and ovary/fruit. We observed increased cell expansion in tap3 mutants and TAP3-RNAi lines during parthenocarpic fruit growth. These were predominantly accompanied by the up-regulation of GA biosynthesis genes, including SlGA20ox1, SlGA20ox2, and SlGA20ox3, as well as reduced expression of the GA-inactivating gene SlGA2ox1 and the auxin signaling gene SlARF7 involved in a crosstalk between GA and auxin. These transcriptional profiles are in agreement with the GA levels in these lines. These results suggest that stamen development negatively regulates fruit set by repressing the GA biosynthesis. |
| Volume | 60(1) |
| Pages | 38-51 |
| Published | 2019-1-1 |
| DOI | 10.1093/pcp/pcy184 |
| PII | 5091329 |
| PMID | 30192961 |
| MeSH | Base Sequence Biosynthetic Pathways / genetics* Flowers / genetics Flowers / growth & development* Fruit / genetics Fruit / growth & development* Gene Expression Regulation, Plant Gibberellins / biosynthesis* Mutagenesis / genetics Mutation / genetics Organ Specificity / genetics Parthenogenesis / genetics* Phenotype Plant Growth Regulators / metabolism Plant Proteins / genetics Plant Proteins / metabolism Plants, Genetically Modified Promoter Regions, Genetic / genetics RNA Interference Signal Transduction Solanum lycopersicum / genetics* Solanum lycopersicum / growth & development* Transcription, Genetic Up-Regulation / genetics* |
| IF | 4.062 |
| Times Cited | 3 |
| Altmetric score |
オルトメトリクス指標項目
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| The most frequently cited source | X(Twitter) |
| Total number of mentions | 6 |
| Altmetric score changes over past 6months | 0.0 |
| Resource | |
| Tomato | TOMJPF00001 TOMJPF00004 TOMJPE7821-1 TOMJPE6483-1 |