論文

査読有り
2014年6月

The rice FISH BONE gene encodes a tryptophan aminotransferase, which affects pleiotropic auxin-related processes

PLANT JOURNAL
  • Takanori Yoshikawa
  • ,
  • Momoyo Ito
  • ,
  • Tsuyoshi Sumikura
  • ,
  • Akira Nakayama
  • ,
  • Takeshi Nishimura
  • ,
  • Hidemi Kitano
  • ,
  • Isomaro Yamaguchi
  • ,
  • Tomokazu Koshiba
  • ,
  • Ken-Ichiro Hibara
  • ,
  • Yasuo Nagato
  • ,
  • Jun-Ichi Itoh

78
6
開始ページ
927
終了ページ
936
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1111/tpj.12517
出版者・発行元
WILEY-BLACKWELL

Auxin is a fundamental plant hormone and its localization within organs plays pivotal roles in plant growth and development. Analysis of many Arabidopsis mutants that were defective in auxin biosynthesis revealed that the indole-3-pyruvic acid (IPA) pathway, catalyzed by the TRYPTOPHAN AMINOTRANSFERASE OF ARABIDOPSIS (TAA) and YUCCA (YUC) families, is the major biosynthetic pathway of indole-3-acetic acid (IAA). In contrast, little information is known about the molecular mechanisms of auxin biosynthesis in rice. In this study, we identified a auxin-related rice mutant, fish bone (fib). FIB encodes an orthologue of TAA genes and loss of FIB function resulted in pleiotropic abnormal phenotypes, such as small leaves with large lamina joint angles, abnormal vascular development, small panicles, abnormal organ identity and defects in root development, together with a reduction in internal IAA levels. Moreover, we found that auxin sensitivity and polar transport activity were altered in the fib mutant. From these results, we suggest that FIB plays a pivotal role in IAA biosynthesis in rice and that auxin biosynthesis, transport and sensitivity are closely interrelated.

Web of Science ® 被引用回数 : 45

リンク情報
DOI
https://doi.org/10.1111/tpj.12517
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000337600000003&DestApp=WOS_CPL
ID情報
  • DOI : 10.1111/tpj.12517
  • ISSN : 0960-7412
  • eISSN : 1365-313X
  • Web of Science ID : WOS:000337600000003

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