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

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

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

Jinwon Lee,Jong-Jin Park,Song Lim Kim,Jieun Yim,Gynheung An,Jinwon Lee,Jong-Jin Park,Song Lim Kim,Jieun Yim,Gynheung An,

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, auricle 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 LIGULELESS1 (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 OsLIGULELESS1 (OsLG1). Transient expression of an OsLG1:RFP (Red Fluorescent Protein) fusion protein indicated that the protein is localized to the nucleus. Transgenic plants harboring the OsLG1 promoter:GUS (beta-glucuronidase) reporter gene construct display preferential expression in developing laminar joint regions and meristemic regions. The gene is also weakly expressed in the ligule, auricles, and leaf sheaths at the basal region. These results indicate that OsLG1 is a transcriptional factor that plays an important role in building the laminar joint between leaf blade and leaf sheath boundary, thereby controlling ligule and auricle development.

Mutations in the rice liguleless gene result in a complete loss of the auricle, ligule, and laminar joint. Publishing Authors By Initials

J Lee,JJ Park,SL Kim,J Yim,G An,J Lee,JJ Park,SL Kim,J Yim,G An,

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

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Plant molecular biology

VOLUME: 65

Page Numbers: 487-99

Journal Abbreviation: Plant Mol. Biol.

ISSN: 0167-4412

DAY: 27

MONTH: 06

YEAR: 2007

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

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LANGUAGE: eng

NlmUniqueID: 9106343

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AFFILIATION: National Research Laboratory of Plant Functional Genomics, Division of Molecular and Life Sciences, Pohang University of Science and Technology, Hyo-ja dong, Pohang, Kyungbuk 790-784, Korea.

Country: Netherlands

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MEDLINETA: Plant Mol Biol

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