Isolation of MADS-box genes from sweet potato (Ipomoea batatas (L.) lam.) expressed specifically in vegetative tissues
Isolation of MADS-box genes from sweet potato (Ipomoea batatas (L.) lam.) expressed specifically in vegetative tissues
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DOI：
10.1093/pcp/pcf043
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发表时间：
2002-03-01
影响因子：
4.9
通讯作者：
Fujimura, T
中科院分区：
文献类型：
--
作者：
Kim, SH;Mizuno, K;Fujimura, T
从甘薯（Ipomoea batatas L.）有色根和块茎形成根组织中分离到新的MADS结构域基因IbMADS 3和IbMADS 4。这两个基因的表达优先在营养组织，特别是根组织，白色须根，有色根，和发展块根。序列比对结果表明，这些基因属于STMADS基因组，包括SVP、STMADS11、STMADS16和AGL24，它们具有高度的序列相似性、相似的表达模式和相似的功能。这两个基因在根中的转录本被发现在维管形成层区域。这些基因的这种特殊的表达模式可能导致营养组织更高的增殖潜力，并可能促进甘薯块茎的发生。这些基因可能导致营养结构的形态发生的重要信息。
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.