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Evolution of Reproductive Organs in Land Plants 总被引:4,自引:0,他引:4
Mitsuyasu Hasebe 《Journal of plant research》1999,112(4):463-474
LEAFY gene is the positive regulator of the MADS-box genes in flower primordia. The number of MADS-box genes presumably increased
by gene duplications before the divergence of ferns and seed plants. Most MADS-box genes in ferns are expressed similarly
in both vegetative and reproductive organs, while in gymnosperms, some MADS-box genes are specifically expressed in reproductive
organs. This suggests that (1) the increase in the number of MADS-box genes and (2) the subsequent recruitment of some MADS-box
genes as homeotic selector genes were important for the evolution of complex reproductive organs. The phylogenetic tree including
both angiosperm and gymnosperm MADS-box genes indicates the loss of the A-function genes in the gymnosperm lineage, which
is presumably related to the absence of perianths in extant gymnosperms. Comparison of expression patterns of orthologous
MADS-box genes in angiosperms, Gnetales, and conifers supports the sister relationship of Gnetales and conifers over that
of Gnetales and angiosperms predicted by phylogenetic trees based on amino acid and nucleotide sequences.
Received 30 July 1999/ Accepted in revised form 9 September 1999 相似文献
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MADS-Box gene diversity in seed plants 300 million years ago 总被引:17,自引:0,他引:17
Becker A Winter KU Meyer B Saedler H Theissen G 《Molecular biology and evolution》2000,17(10):1425-1434
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New Roles for MADS-box Genes in Higher Plants 总被引:4,自引:0,他引:4
F. García-Maroto M.-J. Carmona J.-A. Garrido M. Vilches-Ferrón J. Rodríguez-Ruiz D. López Alonso 《Biologia Plantarum》2003,46(3):321-330
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植物MADS-box 基因家族编码高度保守的转录因子, 参与了包括花发育在内的多种发育进程。为阐释双子叶植物草原龙胆(Eustoma grandiflorum)花器官发育的分子调控机制, 根据MADS-box基因保守序列设计简并引物, 用3'-RACE方法从
草原龙胆中克隆了4个花器官特异表达的MADS-box家族基因。序列和系统进化树分析表明, 这4个基因分别与金鱼草DEF基因、矮牵牛FBP3基因和FBP6基因以及拟南芥SEP3基因具有很高的同源性, 分别属DEF/GLO、AG-like和SEP-l ike亚家族。从而将这4个基因分别命名为EgDEF1、EgGLO1、EgPLE1和EgSEP3-1。推导的氨基酸序列显示, 这些基因编码的蛋白质都包含高度保守的MADS结构域、I结构域和K结构域, 每个基因均有其亚家族特异的C-末端功能域。基因特异性RT-PCR检测结果显示: EgDEF1 在萼片、花瓣、雄蕊及胚珠中高丰度表达, 在心皮中微量表达; 而EgGLO1在花瓣和雄蕊中高丰度表达, 在萼片中微量表达; 在根、茎、叶等营养器官中均未检测到上述2个基因的表达。EgPLE1在雌蕊、心皮和胚珠中特异表达, 但表达的丰度存在差异, 在雄蕊中的表达有所减弱。SEP-like亚家族基因EgSEP3-1在四轮花器官和胚珠中均特异表达,且表达丰度相对一致。 相似文献
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Molecular and phylogenetic analyses of the complete MADS-box transcription factor family in Arabidopsis: new openings to the MADS world 总被引:25,自引:0,他引:25
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Parenicová L de Folter S Kieffer M Horner DS Favalli C Busscher J Cook HE Ingram RM Kater MM Davies B Angenent GC Colombo L 《The Plant cell》2003,15(7):1538-1551
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