The Orchid MADS-Box Genes Controlling Floral Morphogenesis
نویسندگان
چکیده
منابع مشابه
MADS-box genes are involved in floral development and evolution.
MADS-box genes encode transcription factors in all eukaryotic organisms thus far studied. Plant MADS-box proteins contain a DNA-binding (M), an intervening (I), a Keratin-like (K) and a C-terminal C-domain, thus plant MADS-box proteins are of the MIKC type. In higher plants most of the well-characterized genes are involved in floral development. They control the transition from vegetative to ge...
متن کاملIdentification and characterization of three orchid MADS-box genes of the AP1/AGL9 subfamily during floral transition.
Gene expressions associated with in vitro floral transition in an orchid hybrid (Dendrobium grex Madame Thong-In) were investigated by differential display. One clone, orchid transitional growth related gene 7 (otg7), encoding a new MADS-box gene, was identified to be specifically expressed in the transitional shoot apical meristem (TSAM). Using this clone as a probe, three orchid MADS-box gene...
متن کاملThe duplicated B-class MADS-box genes display dualistic characters in orchid floral organ identity and growth.
Orchidaceae are an excellent model to examine perianth development because of their sophisticated floral architecture. In this study, we identified 24 APETALA3 (AP3)-like and 13 PISTILLA (PI)-like genes from 11 species of orchids and characterized them into four AP3- and two PI-duplicated homologs. The first duplication event in AP3 homologs occurring in the early evolutionary history of the Or...
متن کامل-Box Genes Controlling Inflorescence Morphogenesis in Sunflower
MADS -box genes play an important role in plant ontogeny, particularly, in the regulation of floral organ induction and development. Eight full-length cDNAs of HAM genes ( Helianthus annuus MADS ) have been isolated from sunflower. They encode MADS-box transcription factors expressed in inflorescence tissues. In the frames of the ABCDE model, the HAM proteins were classified according to their ...
متن کاملMADS Monsters: Controlling Floral Organ Identity
Homeotic genes, which specify the identities of organs or body parts, have been the subject of intensive research in genetics for more than 100 years. William Bateson, in his treatise on genetic variation (Bateson, 1894), coined the term “homeosis” to describe variations in form that resulted in the abnormal patterning or positioning of normal body parts or organs—for example, “modification of ...
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ژورنال
عنوان ژورنال: The Scientific World JOURNAL
سال: 2006
ISSN: 1537-744X
DOI: 10.1100/tsw.2006.321