Sub-functionalization to ovule development following duplication of a floral organ identity gene
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چکیده
منابع مشابه
Gene Duplication and Transference of Function in the paleoAP3 Lineage of Floral Organ Identity Genes
The floral organ identity gene APETALA3 (AP3) is a MADS-box transcription factor involved in stamen and petal identity that belongs to the B-class of the ABC model of flower development. Thalictrum (Ranunculaceae), an emerging model in the non-core eudicots, has AP3 homologs derived from both ancient and recent gene duplications. Prior work has shown that petals have been lost repeatedly and in...
متن کاملAINTEGUMENTA, an APETALA2-like gene of Arabidopsis with pleiotropic roles in ovule development and floral organ growth.
To understand better the role of genes in controlling ovule development, a female-sterile mutant, aintegumenta (ant), was isolated from Arabidopsis. In ovules of this mutant, integuments do not develop and megasporogenesis is blocked at the tetrad stage. As a pleiotropic effect, narrower floral organs arise in reduced numbers. More complete loss of floral organs occurs when the ant mutant is co...
متن کاملArabidopsis floral homeotic gene BELL (BEL1) controls ovule development through negative regulation of AGAMOUS gene (AG).
Ovules are the developmental precursors of seeds. In angiosperms the ovules are enclosed within the central floral organs, the carpels. We have identified a homeotic mutation in Arabidopsis, "bell" (bel1), which causes transformation of ovule integuments into carpels. In situ hybridization analysis shows that this mutation leads to increased expression of the carpel-determining homeotic gene AG...
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 ...
متن کاملNADP-malate dehydrogenase gene evolution in Andropogoneae (Poaceae): gene duplication followed by sub-functionalization.
BACKGROUND AND AIMS Plastid NADP-dependent malate dehydrogenase (MDH) catalyses the conversion of oxaloacetate to malate. In C4 plants, it is involved in photosynthetic carbon assimilation. In Poaceae, one NADP-MDH gene has been identified in rice (C3; Erhartoideae) and maize (C4; Panicoideae), whereas two tandemly repeated genes have been identified in Sorghum (C4; Panicoideae). In the present...
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ژورنال
عنوان ژورنال: Developmental Biology
سال: 2015
ISSN: 0012-1606
DOI: 10.1016/j.ydbio.2015.06.018