論文

査読有り
2011年8月

Succinic Semialdehyde Dehydrogenase is Involved in the Robust Patterning of Arabidopsis Leaves along the Adaxial-Abaxial Axis

PLANT AND CELL PHYSIOLOGY
  • Koichi Toyokura
  • ,
  • Keiro Watanabe
  • ,
  • Akira Oiwaka
  • ,
  • Miyako Kusano
  • ,
  • Toshiaki Tameshige
  • ,
  • Kiyoshi Tatematsu
  • ,
  • Noritaka Matsumoto
  • ,
  • Ryuji Tsugeki
  • ,
  • Kazuki Saito
  • ,
  • Kiyotaka Okada

52
8
開始ページ
1340
終了ページ
1353
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1093/pcp/pcr079
出版者・発行元
OXFORD UNIV PRESS

Polarity along the adaxial-abaxial axis of the leaf is essential for leaf development and morphogenesis. One of the genes that encodes a putative transcription factor regulating adaxial-abaxial polarity, FILAMENTOUS FLOWER (FIL), is expressed in the abaxial region of the leaf primordia. However, the molecular mechanisms controlling the polarized expression of FIL remain unclear. Here, we analyzed an enlarged fil expression domain1 (enf1) mutant of Arabidopsis, which forms both abaxialized leaves and adaxialized leaves. The ENF1 gene encodes SUCCINIC SEMIALDEHYDE DEHYDROGENASE (SSADH), which catalyzes the conversion of succinic semialdehyde (SSA) to succinate. The enf1 phenotype was suppressed by an additional mutation in GAMMA-AMINOBUTYRIC ACID AMINOTRANSFERASE1 (GABAT1), which encodes an SSA-producing enzyme, suggesting that SSA or its derivatives is the metabolite responsible for the defect in the adaxial-abaxial axis-dependent gene expression of enf1. In the shoot apical meristem, GABAT1 was expressed in the outermost layer but SSADH was not. Exogenous application of SSA induced adaxial characters on the abaxial side of the newly developed leaves. We suggest that a GABA shunt metabolite, SSA or its close derivatives, is involved in the robust leaf patterning and structure along the adaxial-abaxial axis.

Web of Science ® 被引用回数 : 43

リンク情報
DOI
https://doi.org/10.1093/pcp/pcr079
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/21690177
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000293917100007&DestApp=WOS_CPL
ID情報
  • DOI : 10.1093/pcp/pcr079
  • ISSN : 0032-0781
  • eISSN : 1471-9053
  • PubMed ID : 21690177
  • Web of Science ID : WOS:000293917100007

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