Dorsoventral pattern formation of tobacco leaf involves spatial expression of a tobacco homeobox gene, NTH15

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概要

• 論文の詳細を見る

• Biological function of a tobacco homeobox gene, NTH15, was studied by producing two different types of transgenic tobacco, one of which was transformed with NTH15::GUS and the other was transformed with CaMV 35S promoter::antisense NTH15. The GUS staining around shoot apical meristem (SAM) in transgenic plants with NTH15::GUS revealed that the NTH15 expression is specifically localized in the dorsal region of young leaf primordia. The transgenic plants transformed with the antisense construct lost the expression of the endogenous transcript around SAM and also showed alterations in leaf morphology. These transformants formed leaves with disorganized pinnate venation. Midribs of the malformed leaves also lost crescent-shaped vascular systems by ectopic cell vacuolization in their adaxial side. These observations suggest suppression of the NTH15 expression around SAM causes loss of dorsoventrality in midribs. Taken together with the observations of the NTH15 expression pattern, it may be important for the dorsoventral development of leaves that the NTH15 gene is expressed in the adaxial side of young leaf primordia.

• 日本遺伝学会の論文

著者

• Sato Yutaka

  BioScience Center, Nagoya University

• MATSUOKA Makoto

  Nagoya Univ. BioSci. Cen.

• Tamaoki Masanori

  Nagoya University, Bio Science Center

• SATO Yutaka

  Nagoya University, BioScience Center

• Matsuoka M

  Bioscience And Biotechnology Center Nagoya University

• Tamaoki Masanori

  Bioscience Center Nagoya Univ.

• Tasaka Masao

  Nara Inst. Of Sci. And Technol. Nara Jpn

• Sato Yutaka

  Bioscience Center Nagoya University

• Matsuoka Makoto

  Nagoya City Rehabilitation Center

• Tamaoki Masanori

  Nagoya University Bioscience Center

• Tamaoki Masanori

  Department Of Life Science Aichi University Of Education

• Tasaka Masao

  Dept. Bot. Fac. Sci. Kyoto Univ.

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