MADS about MOSS.
نویسندگان
چکیده
Classic MIKC-type MADS-box genes (MIKC(c)) play diverse and crucial roles in angiosperm development, the most studied and best understood of which is the specification of floral organ identities. To shed light on how the flower evolved, phylogenetic and functional analyses of genes involved in its ontogeny, such as the MIKC(c) genes, must be undertaken in as broad a selection as possible of plants with disparate ancestries. Since little is known about the functions of these genes in non-seed plants, we investigated the developmental roles of a subset of the MIKC(c) genes present in the moss, Physcomitrella patens, which is positioned informatively near the base of the land plant evolutionary tree. We observed that transgenic lines possessing an antisense copy of a MIKC(c) gene characteristically displayed knocked-down expression of the corresponding native MIKC(c) gene as well as multiple diverse phenotypic alterations to the haploid gametophytic and diploid sporophytic generations of the life cycle. In this addendum, we re-examine our findings in the light of recent pertinent literature and provide additional data concerning the effects of simultaneously knocking out multiple MIKC(c) genes in this moss.
منابع مشابه
The MADS-domain protein PPM2 preferentially occurs in gametangia and sporophytes of the moss Physcomitrella patens.
To date, the function of MADS-domain transcription factors in non-seed plants remains largely elusive, although a number of genes have been isolated and characterized from a variety of species. In our study we analyzed PPM2, a classical MIKC-type MADS-box gene from the moss Physcomitrella patens, taking advantage of the unique technical properties Physcomitrella offers in terms of efficient hom...
متن کاملEvolution and divergence of the MADS-box gene family based on genome-wide expression analyses.
MADS-box genes encode transcription factors involved in various important aspects of development and differentiation in land plants, metazoans, and other organisms. Three types of land plant MADS-box genes have been reported. MIKCC- and MIKC*-type genes both contain conserved MADS and K domains but have different exon/intron structures. M-type genes lack a K domain. Most MADS-box genes previous...
متن کاملEvolution of a Family of Plant Genes with Regulatory Functions in Development; Studies on Picea abies and Lycopodium annotinum
Svensson, M., 2000. Evolution of a Family of Plant Genes with Regulatory Functions in Development; Studies on Picea abies and Lycopodium annotinum. Acta Universitatis Upsaliensis. Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 573. 45 pp. Uppsala. ISBN 91-554-4826-7. This work is focused on the molecular genetic basis for morphological change in evol...
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عنوان ژورنال:
- Plant signaling & behavior
دوره 4 2 شماره
صفحات -
تاریخ انتشار 2009