Genome-wide identification and investigation of the MADS-box gene family in Medicago truncatula

doi:10.11686/cyxb20140628

Abstract

Abstract: MADS-box genes encode important transcription factors in plants that are involved in many processes during growth, development and reproduction. A Pfam domain search of the Medicago truncatula genome revealed 138 putative MADS-box genes. These genes were classified into two classes, type I (92 members) and type II (46 members), based on multiple alignment and phylogenetic analysis. There were 134 MADS-box genes present on all chromosomes in M. truncatula, while four were located on the super-contigs. Like Arabidopsis and rice MADS-box genes, those MADS-box genes expanded through gene duplication events in M. truncatula, especially the type I genes. There were many duplicate gene clusters, where MADS-box genes with high degrees of similarity were clustered across the M. truncatula genome. Analysis of RNA-seq data from different tissues in M. truncatula revealed that MADS-box genes are expressed in seedpod, flower and other tissues. This expression pattern suggests that the MADS-box genes play an important role in tissue differentiation, development and reproduction process in M. truncatula.

CLC Number:

S816

ZHANG Jun,SONG Li-li,GUO Dong-lin,GUO Chang-hong,SHU Yong-jun. Genome-wide identification and investigation of the MADS-box gene family in Medicago truncatula[J]. Acta Prataculturae Sinica, 2014, 23(6): 233-241.

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