Plant Transcription Factor Database
Previous version: v3.0
Oryza glumaepatula
M-type_MADS Family
Species TF ID Description
OGLUM01G08130.1M-type_MADS family protein
OGLUM01G13480.1M-type_MADS family protein
OGLUM01G13490.1M-type_MADS family protein
OGLUM01G15980.1M-type_MADS family protein
OGLUM01G15990.1M-type_MADS family protein
OGLUM01G16000.1M-type_MADS family protein
OGLUM01G45230.1M-type_MADS family protein
OGLUM01G45730.1M-type_MADS family protein
OGLUM01G46440.1M-type_MADS family protein
OGLUM01G46440.2M-type_MADS family protein
OGLUM01G46440.3M-type_MADS family protein
OGLUM01G50090.1M-type_MADS family protein
OGLUM02G04740.1M-type_MADS family protein
OGLUM03G01750.4M-type_MADS family protein
OGLUM03G24530.1M-type_MADS family protein
OGLUM03G25150.1M-type_MADS family protein
OGLUM04G08780.1M-type_MADS family protein
OGLUM04G10090.1M-type_MADS family protein
OGLUM04G10110.1M-type_MADS family protein
OGLUM05G11150.1M-type_MADS family protein
OGLUM06G08350.1M-type_MADS family protein
OGLUM06G08350.2M-type_MADS family protein
OGLUM06G14250.1M-type_MADS family protein
OGLUM06G15040.1M-type_MADS family protein
OGLUM06G17270.1M-type_MADS family protein
OGLUM06G17310.1M-type_MADS family protein
OGLUM06G17330.1M-type_MADS family protein
OGLUM07G14530.1M-type_MADS family protein
OGLUM08G16100.1M-type_MADS family protein
OGLUM08G20110.1M-type_MADS family protein
OGLUM09G01090.1M-type_MADS family protein
OGLUM09G01140.1M-type_MADS family protein
OGLUM10G10610.1M-type_MADS family protein
OGLUM11G21110.1M-type_MADS family protein
OGLUM12G06360.1M-type_MADS family protein
OGLUM12G10670.1M-type_MADS family protein
OGLUM12G10680.1M-type_MADS family protein
M-type_MADS (M-type MADS) Family Introduction

The best studied plant MADS-box transcription factors are those involved in floral organ identity determination. Analysis of homeotic floral mutants resulted in the formulation of a genetic model, named the ABC model, that explains how the combined functions of three classes of genes (A, B, and C) determine the identity of the four flower organs (reviewed by Coen and Meyerowitz, 1991). Arabidopsis has two A-class genes (AP1 and AP2 [Bowman et al., 1989]), two B-class genes (PI and AP3), and a single C-class gene (AG), of which only AP2 is not a MADS-box gene. Recently, it was shown that the Arabidopsis B- and C-function genes, which control petal, stamen, and carpel development, are functionally dependent on three highly similar MADS-box genes, SEP1, SEP2, and SEP3 (Pelaz et al., 2000). Interestingly, only when mutant knockout alleles of the three SEP genes were combined in a triple sep1 sep2 sep3 mutant was loss of petal, stamen, and carpel identity observed, resulting in a flower composed of only sepals. This example shows that redundancy occurs in the MADS-box gene family, which complicates reverse genetic strategies for gene function analysis. The SHP genes provide another example of MADS-box gene redundancy. shp1 and shp2 single mutants do not exhibit any phenotypic effect, whereas in the double mutant, development of the dehiscence zone is disturbed in the fruit, resulting in a failure to release seeds (Liljegren et al., 2000)[1].

It has been proposed that there are at least 2 lineages (type I and type II) of MADS-box genes in plants, animals, and fungi. Most of the well-studied plant genes are type II genes and have three more domains than type I genes from the N to the C terminus of the protein:intervening (I) domain (~30 codons), keratin-lik e coiled-coil (K) domain (~70 codons), and Cterminal (C) domain (variable length). These genes are called the MIKC-type and are specific to plants[2].

The MADS-box is a DNA binding domain of 58 amino acids that binds DNA at consensus recognition sequences known as CArG boxes [CC(A/T)6GG] (Hayes et al., 1988; Riechmann et al., 1996b). The interaction with DNA has been studied in detail for the human and yeast MADS-box proteins thanks to the resolved crystal structures (Pellegrini et al., 1995; Santelli and Richmond, 2000). The I domain is less conserved and contributes to the specification of dimerization. The K domain is characterized by a coiled-coil structure, which facilitates the dimerization of MADS-box proteins (Davies et al., 1996; Fan et al., 1997). The C domain is the least conserved domain; in some cases, it has been shown to contain a transactivation domain or to contribute to the formation of multimeric MADS-box protein complexes (Egea-Cortines et al., 1999; Honma and Goto, 2001)[1].

1.Parenicova L, de Folter S, Kieffer M, Horner DS, Favalli C, Busscher J, Cook HE, Ingram RM, Kater MM, Davies B, Angenent GC, Colombo L.
Molecular and phylogenetic analyses of the complete MADS-box transcription factor family in Arabidopsis: new openings to the MADS world.
Plant Cell. 2003 Jul;15(7):1538-51.
PMID: 12837945
2.Nam J, dePamphilis CW, Ma H, Nei M.
Antiquity and evolution of the MADS-box gene family controlling flower development in plants.
Mol Biol Evol. 2003 Sep;20(9):1435-47. Epub 2003 May 30.
PMID: 12777513