Journal Article

Isolation of MADS-box Genes from Sweet Potato (<i>Ipomoea batatas</i> (L.) Lam.) Expressed Specifically in Vegetative Tissues

Sun-Hyung Kim, Kouichi Mizuno and Tatsuhito Fujimura

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 43, issue 3, pages 314-322
Published in print March 2002 | ISSN: 0032-0781
Published online March 2002 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pcf043
Isolation of MADS-box Genes from Sweet Potato (Ipomoea batatas (L.) Lam.) Expressed Specifically in Vegetative Tissues

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  • Biochemistry
  • Molecular and Cell Biology
  • Plant Sciences and Forestry

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New MADS-domain genes, IbMADS3 and IbMADS4, were isolated from pigmented and tuber-forming root tissue in sweet potato (Ipomoea batatas L.). Both genes were expressed preferentially in vegetative tissues, especially root tissues; white fibrous roots, pigmented roots, and developing tuberous roots. On sequence alignment, these genes fell into the STMADS group composed of SVP, STMADS11, STMADS16 and AGL24, which share high sequence similarity, similar expression patterns and similar function. Transcripts of these two genes in roots were found in the vascular cambium region. This particular expression pattern of these genes may lead to a higher proliferative potential of vegetative tissues, and may facilitate tuber initiation in sweet potato. These genes may lead to important information on the morphogenesis of vegetative structures.

Keywords: Key words: IbMADS — Ipomoea batatas — Tuber formation — Vascular cambium.

Journal Article.  5214 words.  Illustrated.

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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