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Mutations in the rice liguleless gene result in a complete loss of the auricle, ligule, and laminar joint
 

Summary: Mutations in the rice liguleless gene result in a complete loss of the
auricle, ligule, and laminar joint
Jinwon Lee Jong-Jin Park Song Lim Kim
Jieun Yim Gynheung An
Received: 25 January 2007 / Accepted: 24 May 2007 / Published online: 27 June 2007
Springer Science+Business Media B.V. 2007
Abstract The area between the upper part of the leaf
sheath and the basal portion of the leaf blade contains
several specialized organs, such as the laminar joint, auri-
cle and ligule. Here we report the identification of T-DNA
insertional mutant lines that lack all of these organs. The
gene knocked out in the mutant lines encodes a protein that
contains a SBP (SQUAMOSA promoter Binding Protein)-
domain and is highly homologous to the maize LIGULE-
LESS1 (LG1) gene. At the amino acid sequence level, the
OsLG1 protein is 69% identical to maize LG1 and 78%
identical to barley LG1. We named the rice gene OsLI-
GULELESS1 (OsLG1). Transient expression of an
OsLG1:RFP (Red Fluorescent Protein) fusion protein
indicated that the protein is localized to the nucleus.

  

Source: An, Gynheung - Department of Life Science, Pohang University of Science and Technology

 

Collections: Biotechnology; Biology and Medicine