論文

査読有り
2019年1月

Aberrant Stamen Development is Associated with Parthenocarpic Fruit Set through Up-regulation of Gibberellin Biosynthesis in Tomato

Plant & Cell Physiology
  • Okabe, Yoshihiro
  • ,
  • Yamaoka, Tatsuya
  • ,
  • Ariizumi, Tohru
  • ,
  • Ushijima, Koichiro
  • ,
  • Kojima, Mikiko
  • ,
  • Takebayashi, Yumiko
  • ,
  • Sakakibara, Hitoshi
  • ,
  • Kusano, Miyako
  • ,
  • Shinozaki, Yoshihito
  • ,
  • Pulungan, Sri I
  • ,
  • Kubo, Yasutaka
  • ,
  • Nakano, Ryohei
  • ,
  • Ezura, Hiroshi

60
1
開始ページ
38
終了ページ
51
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1093/pcp/pcy184
出版者・発行元
OXFORD UNIV PRESS

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 th

リンク情報
DOI
https://doi.org/10.1093/pcp/pcy184

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