Genetic mechanism of leaf blade flattening in unifacial leaves

单面叶片叶片扁平化的遗传机制

• 批准号: 21770071
• 负责人: YAMAGUCHI Takahiro
• 金额: $ 2.91万
• 依托单位: National Institute for Basic Biology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21770071/
• 关键词: 発生; 進化; 単子葉植物; 単面葉; 葉の極性; 葉の平面成長; 葉; 平面成長; イグサ属; 収斂進化

Angiosperm leaves generally develop as bifacial structures with distinct adaxial and abaxial identities. However, several monocot species, such as iris and leek, develop unifacial leaves, in which leaf blades have only abaxial identity. In bifacial leaves, adaxial-abaxial polarity is required for leaf blade flattening, whereas many unifacial leaves become flattened despite their leaf blades being abaxialized. Here, I investigated the mechanisms underlying the development and evolution of flattened leaf blades in unifacial leaves. I demonstrated that an ortholog of the DROOPING LEAF (DL) gene may promote flattening of the unifacial leaf blade. Based on the results, I proposed genetic model for the leaf blade flattening in unifacial leaves.

被子植物叶子通常发育为具有独特的正面和背面特征的双面结构。然而，一些单子叶植物物种，如鸢尾和韭菜，发育单面叶子，其中叶片仅具有背面特征。在双面叶片中，叶片变平需要近轴-远轴极性，而许多单面叶片尽管叶片远轴化，但仍会变平。在这里，我研究了单面叶子中扁平叶片发育和进化的机制。我证明了 DROOPING LEAF (DL) 基因的直系同源物可以促进单面叶片变平。根据这些结果，我提出了单面叶片叶片扁平化的遗传模型。

项目成果

ROTUNDIFOLIA4 regulates cell proliferation along the body axis in Arabidopsis shoot.

• DOI: 10.1093/pcp/pcq138
• 发表时间: 2011-01
• 期刊: Plant & cell physiology
• 影响因子: 4.9
• 作者: Ikeuchi M;Yamaguchi T;Kazama T;Ito T;Horiguchi G;Tsukaya H
• 通讯作者: Tsukaya H

Distinct Regulation of Adaxial-Abaxial Polarity in Anther Patterning in Rice

• DOI: 10.1105/tpc.110.075291
• 发表时间: 2010-05-01
• 期刊: PLANT CELL
• 影响因子: 11.6
• 作者: Toriba, Taiyo;Suzaki, Takuya;Hirano, Hiro-Yuki
• 通讯作者: Hirano, Hiro-Yuki

単面葉の発生進化:繰り返し進化と収斂進化の遺伝的背景

单面叶的发育进化：重复进化和趋同进化的遗传背景

• 发表时间: 2009
• 作者: 渡辺雅之;田中耕一郎;山口貴大
• 通讯作者: 山口貴大

単面葉の発生進化の遺伝子基盤:裏しかない葉を平たくするしくみ

单面叶子发育和进化的遗传基础：使只有背面的叶子变平的机制

• 发表时间: 2010
• 作者: 幸田尚;金児-石野 知子;石野史敏;山口貴大
• 通讯作者: 山口貴大

Evolutionary and developmental studies of unifacial leaves in monocots: Juncus as a model system

• DOI: 10.1007/s10265-009-0255-3
• 发表时间: 2009
• 期刊: Journal of Plant Research
• 影响因子: 2.8
• 作者: Takahiro Yamaguchi;H. Tsukaya