Grape SISTER OF RAMOSA3 is a negative regulator of pedicel development of grape inflorescence

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• 作者：Shiho Ishiai ; Yuko Nakajima ; Shinichi Enoki…
• 关键词：Branch architecture ; Grapevine ; Inflorescence ; RAMOSA ; SISTER OF RAMOSA3 ; Trehalose ; 6 ; phosphate
• 刊名：Plant Cell, Tissue and Organ Culture
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：124
• 期：1
• 页码：217-225
• 全文大小：962 KB
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• 作者单位：Shiho Ishiai (1)
  Yuko Nakajima (1)
  Shinichi Enoki (1)
  Shunji Suzuki (1)
  
  1. Laboratory of Fruit Genetic Engineering, The Institute of Enology and Viticulture, University of Yamanashi, 1-13-1, Kofu, Yamanashi, 400-0005, Japan
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Plant Sciences
  Plant Physiology
  
• 出版者：Springer Netherlands
• ISSN：1573-5044

文摘

We report here the relationship between pedicel development and grape SISTER OF RAMOSA3 (VvSRA) expression in grapevine. The increase in VvSRA expression, but not grape RAMOSA3 expression, in young grape inflorescence decreased the number of pedicels on the lateral branch of grape inflorescence. This suggests that VvSRA negatively regulates pedicel development on the lateral branch of grape inflorescence, thereby decreasing berry number on a bunch in cultivars expressing VvSRA abundantly. Similarly, VvSRA overexpression decreased the number of flower buds on secondary branch in Arabidopsis plants. In addition, VvSRA overexpression had notable effects on Arabidopsis plant phenotypes, such as smaller flowers, shorter inflorescence, and expanded rosette leaves. As VvSRA encodes a trehalose 6-phosphate phosphatase, VvSRA overexpression might decrease trehalose 6-phosphate in the transgenic Arabidopsis plants, thereby causing the phenotypical alternations. These findings may provide new information on grapevine morphogenesis including pedicel development by SISTER OF RAMOSA3 and trehalose metabolism. Keywords Branch architecture Grapevine Inflorescence RAMOSA SISTER OF RAMOSA3 Trehalose-6-phosphate