Function and evolution of the plant MADS-box gene family

Ng, Medard; Yanofsky, Martin F.

doi:10.1038/35056041

Cited by 345 publications

(242 citation statements)

References 136 publications

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“…All plant MADS-box proteins that have been functionally characterized so far belong to the type II lineage. Type II MADS-box proteins are involved in many critical aspects of plant development such as regulation of floral organ and meristem identity, induction of flowering, as well as development of ovules, fruits, leaves, and roots (Ng and Yanofsky 2001). The type I MADS-box lineage in plants is more closely related to the previously identified animal SRF-like MADS-box genes (Alvarez-Buylla et al 2000).…”

Section: A Type I Mads-box Gene Is An Early Downstream Target Of the mentioning

confidence: 99%

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ThePolycomb-group protein MEDEA regulates seed development by controlling expression of the MADS-box genePHERES1

Köhler¹,

Hennig²,

Spillane³

et al. 2003

Genes Dev.

393

407

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The life cycle of higher plants alternates between a haploid gametophytic generation and a diploid sporophytic generation. The female and male gametes formed during the gametophytic phase fuse during fertilization to generate the sporophytic phase of the life cycle. Most sexually reproducing diploid plants undergo double fertilization, during which the egg cell and the homodiploid central cell are each fertilized by a sperm cell and give rise to the embryo and the triploid endosperm, respectively (Grossniklaus and Schneitz 1998).In analogy to the Greek myth in which the priestess Medea killed her children Pheres and Meidos (Euripides 431 BC; Wolf 1996), a maternal effect mutant identified in a screen for gametophytic mutants in Arabidopsis thaliana was named medea (mea; . Additional alleles of the MEA gene, termed FER-TILIZATION INDEPENDENT SEED DEVELOPMENT (FIS1), as well as mutations at two other loci, FIS2 and FERTILISATION INDEPENDENT ENDOSPERM (FIE or FIS3), were identified in genetic screens for mutants displaying seed development in the absence of fertilization (Ohad et al. 1996;Chaudhury et al. 1997). The three fisclass mutants show a gametophytic maternal effect: all seeds derived from a mutant female gametophyte (50% in a heterozygote) abort irrespective of the paternal allele. Early development of fis embryos is morphologically indistinguishable from that of wild-type siblings. However, fis embryogenesis is delayed after the globular stage and eventually arrests with oversized heart-shaped embryos surrounded by an abnormally proliferated en-

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Section: A Type I Mads-box Gene Is An Early Downstream Target Of the mentioning

confidence: 99%

“…Both AG and FLC are members of the type II MADS-box lineage, which had already diverged from the type I MADS-box lineage in a common ancestor of plants and animals (Alvarez-Buylla et al 2000). To date, only type II MADS-box genes have been characterized at the functional level in plants (Ng and Yanofsky 2001).…”

mentioning

confidence: 99%

ThePolycomb-group protein MEDEA regulates seed development by controlling expression of the MADS-box genePHERES1

Köhler¹,

Hennig²,

Spillane³

et al. 2003

Genes Dev.

393

407

View full text Add to dashboard Cite

show abstract

“…The identity of floral organs in most angiosperms is specified by a combination of transcription factors in the MADS box family (Ng and Yanofsky, 2001). These transcription factors fall into large clades, often named for the characteristic protein in Arabidopsis thaliana, such as AGAMOUS, PISTILLATA, APETALA3, APETALA1, and SEPALLATA .…”

Section: Introductionmentioning

confidence: 99%

Evolution ofAGL6-likeMADS Box Genes in Grasses (Poaceae): Ovule Expression Is Ancient and Palea Expression Is New

Reinheimer

Kellogg

2009

The Plant Cell

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AGAMOUS-like6 (AGL6) genes encode MIKC-type MADS box transcription factors and are closely related to SEPALLATA and AP1/FUL-like genes. Here, we focus on the molecular evolution and expression of the AGL6-like genes in grasses. We have found that AGL6-like genes are expressed in ovules, lodicules (second whorl floral organs), paleas (putative first whorl floral organs), and floral meristems. Each of these expression domains was acquired at a different time in evolution, indicating that each represents a distinct function of the gene product and that the AGL6-like genes are pleiotropic. Expression in the inner integument of the ovule appears to be an ancient expression pattern corresponding to the expression of the gene in the megasporangium and integument in gymnosperms. Expression in floral meristems appears to have been acquired in the angiosperms and expression in second whorl organs in monocots. Early in grass evolution, AGL6-like orthologs acquired a new expression domain in the palea. Stamen expression is variable. Most grasses have a single AGL6-like gene (orthologous to the rice [Oryza sativa] gene MADS6). However, rice and other species of Oryza have a second copy (orthologous to rice MADS17) that appears to be the result of an ancient duplication.

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“…Genetic and molecular characterization of the flowering process in different species reveals a conservation of the basic genetic mechanisms controlling the early stages of flower formation (Theissen and Saedler, 1999;Ng and Yanofsky, 2001). However, when homologous genes from species other than Arabidopsis have been analyzed, differences-regarding expression patterns and mutant phenotypes-have been found that may reflect distinct roles from those described for the Arabidopsis genes.…”

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confidence: 99%

Floral Meristem Identity Genes Are Expressed during Tendril Development in Grapevine

et al. 2004

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To study the early steps of flower initiation and development in grapevine (Vitis vinifera), we have isolated two MADS-box genes, VFUL-L and VAP1, the putative FUL-like and AP1 grapevine orthologs, and analyzed their expression patterns during vegetative and reproductive development. Both genes are expressed in lateral meristems that, in grapevine, can give rise to either inflorescences or tendrils. They are also coexpressed in inflorescence and flower meristems. During flower development, VFUL-L transcripts are restricted to the central part of young flower meristems and, later, to the prospective carpel-forming region, which is consistent with a role of this gene in floral transition and carpel and fruit development. Expression pattern of VAP1 suggests that it may play a role in flowering transition and flower development. However, its lack of expression in sepal primordia, does not support its role as an A-function gene in grapevine. Neither VFUL-L nor VAP1 expression was detected in vegetative organs such as leaves or roots. In contrast, they are expressed throughout tendril development. Transcription of both genes in tendrils of very young plants that have not undergone flowering transition indicates that this expression is independent of the flowering process. These unique expression patterns of genes typically involved in reproductive development have implications on our understanding of flower induction and initiation in grapevine, on the origin of grapevine tendrils and on the functional roles of AP1-and FUL-like genes in plant development. These results also provide molecular support to the hypothesis that Vitis tendrils are modified reproductive organs adapted to climb.

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Function and evolution of the plant MADS-box gene family

Cited by 345 publications

References 136 publications

ThePolycomb-group protein MEDEA regulates seed development by controlling expression of the MADS-box genePHERES1

ThePolycomb-group protein MEDEA regulates seed development by controlling expression of the MADS-box genePHERES1

Evolution ofAGL6-likeMADS Box Genes in Grasses (Poaceae): Ovule Expression Is Ancient and Palea Expression Is New

Floral Meristem Identity Genes Are Expressed during Tendril Development in Grapevine

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