| RRC ID |
53888
|
| 著者 |
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.
|
| タイトル |
Aberrant Stamen Development is Associated with Parthenocarpic Fruit Set Through Up-Regulation of Gibberellin Biosynthesis in Tomato.
|
| ジャーナル |
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.
|
| 巻・号 |
60(1)
|
| ページ |
38-51
|
| 公開日 |
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
|
| 引用数 |
3
|
| リソース情報 |
| トマト |
TOMJPF00001
TOMJPF00004
TOMJPE7821-1
TOMJPE6483-1 |
