Functional analysis of the auxin-inducible LBD/ASL family in the lateral root formation

2010 Fiscal Year Final Research Report

• Project/Area Number: 21770045
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Plant molecular biology/Plant physiology
• Research Institution: Kobe University
• Principal Investigator: GOH Tatsuaki Kobe University, 大学院・理学研究科, 学術研究員 (80511419)
• Research Collaborator: FUKAKI Hidehiro 神戸大学, 大学院・理学研究科, 准教授 (80324979)
• Project Period (FY): 2009 – 2010
• Keywords: シロイヌナズナ / オーキシン / 転写制御 / LBD / ASL遺伝子群 / 側根形成

Research Abstract

In Arabidopsis thaliana, lateral root (LR) formation is initiated from asymmetric cell divisions (ACDs) of the xylem pole pericycle cells (XPPs) of the parent roots. We show that auxin-inducible LBD16/ASL18 was specifically expressed in a small number of XPP cells before the first ACD and functions redundantly with the other related LBD/ASL proteins in LR formation. Furthermore, the localized activity of auxin-inducible LBD/ASL proteins links to the establishment of asymmetry in the LR founder cells necessary for LR initiation.

Research Products

• [Journal Article] GDP-bound and nucleotide-free intermediates of the guanine nucleotide exchange in the Rab5-Vps9 system. (2010)
  • Author(s): Uejima T, Ihara K, Goh T, Ito E, Sunada M, Ueda T, Nakano A, Wakatsuki S.
  • Journal Title: J Biol Chem. 285 Pages: 36689-36697
  • Peer Reviewed
• [Journal Article] Dynamic aspects of ion accumulation by vesicle traffic under salt stress in Arabidopsis. (2010)
  • Author(s): Hamaji K, Nagira M, Yoshida K, Ohnishi M, Oda Y, Uemura T, Goh T, Sato MH, Morita MT, Tasaka M, Hasezawa S, Nakano A, Hara-Nishimura I, Maeshima M, Fukaki H, Mimura T.
  • Journal Title: Plant Cell Physiol. 50 Pages: 2023-2033
  • Peer Reviewed
• [Presentation] オーキシン誘導性LBD/ASLメンバーによる側根の形成開始の制御機構 (2011)
  • Author(s): 郷達明, 三村徹郎, 深城英弘
  • Organizer: 第52回日本植物生理学会年会
  • Place of Presentation: 仙台(口頭発表)
  • Year and Date: 2011-03-22
• [Presentation] The roles of LBD/ASLs for LR initiation (2011)
  • Author(s): Tatsuaki Goh, Hidehiro Fukaki.
  • Organizer: European Lateral Root Workshop
  • Place of Presentation: イギリス,ノッティンガム(口頭発表)
  • Year and Date: 2011-01-12
• [Presentation] Auxin-inducible LBD/ASL proteins regulate Arabidopsis lateral root initiation through activating the first asymmetric cell divisions of protoxylem pericycle (2010)
  • Author(s): Tatsuaki Goh, Tetsuro Mimura, Hidehiro Fukaki.
  • Organizer: 第33回日本分子生物学会年会 第83回日本生化学会大会合同大会,口頭およびポスター発表
  • Place of Presentation: 神戸
  • Year and Date: 2010-12-08
• [Presentation] Auxin-inducible LBD/ASL members regulate lateral root formation (2010)
  • Author(s): Tatsuaki Goh, Hidehiro Fukaki.
  • Organizer: Plant Science Communications 2010
  • Place of Presentation: 岡崎(ポスター発表)
  • Year and Date: 2010-10-16
• [Presentation] Auxin-inducible LBD/ASL members regulate lateral root formation (2010)
  • Author(s): Tatsuaki Goh, Tetsuro Mimura, Hidehiro Fukaki.
  • Organizer: 21^<st> International Conference on Arabidopsis Research, ポスター発表
  • Place of Presentation: 横浜
  • Year and Date: 2010-06-07
• [Presentation] オーキシン誘導性LBD/ASLメンバーは側根の形成開始に関与する (2010)
  • Author(s): 郷達明, 三村徹郎, 深城英弘
  • Organizer: 第51回日本植物生理学会年会
  • Place of Presentation: 熊本(口頭発表)
  • Year and Date: 2010-03-21
• [Remarks] ホームページ等
  • URL: http://www.research.kobe-u.ac.jp/fsci-fukaki/fukaki/fukaki_laboratory.html