Eucalypt MADS-box genes expressed in developing flowers.
Eucalypt MADS-box genes expressed in developing flowers.
复制标题
DOI：
10.1104/pp.118.2.365
复制
发表时间：
1998-10
期刊：
影响因子：
7.4
通讯作者：
S. Southerton;H. Marshall;A. Mouradov;R. Teasdale
中科院分区：
文献类型：
--
作者：
S. Southerton;H. Marshall;A. Mouradov;R. Teasdale
从巨桉（Eucalyptus grandis W.）希尔前少女。这三个egm基因是单拷贝基因，几乎只在花中表达。egm 1和egm 3基因与其它植物MADS-box基因同源性最高，它们在花分生组织和器官识别基因之间起着中介作用。egm 3基因在真核生物的花托或花被管中也有强表达，花托或花被管围绕着心皮，并具有萼片、花瓣和许多雄蕊。在真核生物中似乎有一组基因与egm 1基因的3'端区域有很强的同源性。egm 2基因在真核生物的花瓣和雄蕊中表达，与MADS盒基因同源性最高，MADS盒基因属于globosa基因组，调节第二和第三轮花的器官发生。讨论了这三个基因在真核生物花发育中的可能作用。
Three MADS-box genes were identified from a cDNA library derived from young flowers of Eucalyptus grandis W. Hill ex Maiden. The three egm genes are single-copy genes and are expressed almost exclusively in flowers. The egm1 and egm3 genes shared strongest homology with other plant MADS-box genes, which mediate between the floral meristem and the organ-identity genes. The egm3 gene was also expressed strongly in the receptacle or floral tube, which surrounds the carpels in the eucalypt flower and bears the sepals, petals, and numerous stamens. There appeared to be a group of genes in eucalypts with strong homology with the 3' region of the egm1 gene. The egm2 gene was expressed in eucalypt petals and stamens and was most homologous to MADS-box genes, which belong to the globosa group of genes, which regulate organogenesis of the second and third floral whorls. The possible role of these three genes in eucalypt floral development is discussed.