CEN-like gene from tobacco2 CYC CYCLOIDEA DICH DICHOTOMA KNOX KNOTTED-like homeobox LFY LEAFY PEAFIM PEAFIMBRIATA PI PISTILLATA QTL quantitative trait loci SEP1 SEPALLATA1 TFL1 TERMINAL FLOWER1 UFO UNUSUAL FLORAL ORGANS
نویسندگان
چکیده
Considerable progress has been made in identifying genes that are involved in the evolution of plant morphologies. Elements of the ABC model of flower development are conserved throughout angiosperms, and homologous MADS-box genes function in gymnosperm reproduction. Candidate gene and mapping analyses of floral symmetry, sex determination, inflorescence architecture, and compound leaves provide intriguing glimpses into the evolution of morphological adaptations.
منابع مشابه
The ASK1 gene regulates B function gene expression in cooperation with UFO and LEAFY in Arabidopsis.
The Arabidopsis floral regulatory genes APETALA3 (AP3) and PISTILLATA (PI) are required for the B function according to the ABC model for floral organ identity. AP3 and PI expression are positively regulated by the LEAFY (LFY) and UNUSUAL FLORAL ORGANS (UFO) genes. UFO encodes an F-box protein, and we have shown previously that UFO genetically interacts with the ASK1 gene encoding a SKP1 homolo...
متن کاملActivation of the Arabidopsis B class homeotic genes by APETALA1.
Proper development of petals and stamens in Arabidopsis flowers requires the activities of APETALA3 (AP3) and PISTILLATA (PI), whose transcripts can be detected in the petal and stamen primordia. Localized expression of AP3 and PI requires the activities of at least three genes: APETALA1 (AP1), LEAFY (LFY), and UNUSUAL FLORAL ORGANS (UFO). It has been proposed that UFO provides spatial cues and...
متن کاملContrasting evolutionary forces in the Arabidopsis thaliana floral developmental pathway.
The floral developmental pathway in Arabidopsis thaliana is composed of several interacting regulatory genes, including the inflorescence architecture gene TERMINAL FLOWER1 (TFL1), the floral meristem identity genes LEAFY (LFY), APETALA1 (AP1), and CAULIFLOWER (CAL), and the floral organ identity genes APETALA3 (AP3) and PISTILLATA (PI). Molecular population genetic analyses of these different ...
متن کاملInterlocking feedback loops govern the dynamic behavior of the floral transition in Arabidopsis.
During flowering, primordia on the flanks of the shoot apical meristem are specified to form flowers instead of leaves. Like many plants, Arabidopsis thaliana integrates environmental and endogenous signals to control the timing of reproduction. To study the underlying regulatory logic of the floral transition, we used a combination of modeling and experiments to define a core gene regulatory n...
متن کاملInteractions among APETALA1, LEAFY, and TERMINAL FLOWER1 specify meristem fate.
Upon floral induction, the primary shoot meristem of an Arabidopsis plant begins to produce flower meristems rather than leaf primordia on its flanks. Assignment of floral fate to lateral meristems is primarily due to the cooperative activity of the flower meristem identity genes LEAFY (LFY), APETALA1 (AP1), and CAULIFLOWER. We present evidence here that AP1 expression in lateral meristems is a...
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تاریخ انتشار 2001