首页 | 本学科首页   官方微博 | 高级检索  
   检索      


MADS box genes expressed in developing inflorescences of rice and sorghum
Institution:(1) Department of Genetics and Microbiology, University of Milan, Via Celoria 26, I-20133 Milan, Italy Tel +39 226605201; fax +39 2 2664551 e-mail enp@imiucca.csi.unimi.it, IT;(2) DLO-Centre for Plant Breeding and Reproduction Research (CPRO-DLO), Wageningen, The Netherlands, NL
Abstract:With the aim of elucidating the complex genetic system controlling flower morphogenesis in cereals, we have characterized two rice and two sorghum MADS box genes isolated from cDNA libraries made from developing inflorescences. The rice clones OsMADS24 and OsMADS45, which share high homology with the Arabidopsis AGL2 and AGL4 MADS box genes, are expressed in the floral meristem, in all the primordia, and in mature floral organs. High expression levels have also been found in developing kernels. The sorghum clone SbMADS1 is also homologous to AGL2 and AGL4: expression analysis and mapping data suggest that it is the ortholog of OsMADS24. The pattern of expression of SbMADS2, the other sorghum MADS box gene, suggests that it may play a role as a meristem identity gene, as does AP1 in Arabidopsis, to which it shows considerable homology. The four genes have been mapped on a rice RFLP genetic map: the results are discussed in terms of synteny among cereals. Received: 25 April 1996 / Accepted: 29 August 1996
Keywords:Flower development  MADS box genes  Oryza sativa  Sorghum bicolor  Synteny
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号