Journal ArticleDOI
Inflorescence Commitment and Architecture in Arabidopsis
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TLDR
The Antirrhinum gene CENTRORADIALIS and the Arabidopsis gene TERMINAL FLOWER 1 (TFL1) were shown to be homologous, which suggests that a common mechanism underlies indeterminacy in these plants.Abstract:
Flowering plants exhibit one of two types of inflorescence architecture: indeterminate, in which the inflorescence grows indefinitely, or determinate, in which a terminal flower is produced. The indeterminate condition is thought to have evolved from the determinate many times, independently. In two mutants in distantly related species, terminal flower 1 in Arabidopsis and centroradialis in Antirrhinum, inflorescences that are normally indeterminate are converted to a determinate architecture. The Antirrhinum gene CENTRORADIALIS (CEN) and the Arabidopsis gene TERMINAL FLOWER 1 (TFL1) were shown to be homologous, which suggests that a common mechanism underlies indeterminacy in these plants. However, unlike CEN, TFL1 is also expressed during the vegetative phase, where it delays the commitment to inflorescence development and thus affects the timing of the formation of the inflorescence meristem as well as its identity.read more
Citations
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Journal ArticleDOI
Activation tagging of the floral inducer FT.
Igor Kardailsky,Vipula K. Shukla,Ji Hoon Ahn,Nicole Dagenais,Sioux K. Christensen,Jasmine Thuy Nguyen,Joanne Chory,Maria J. Harrison,Detlef Weigel +8 more
TL;DR: FLOWERING LOCUS T (FT), which acts in parallel with the meristem-identity gene LEAFY (LFY) to induce flowering of Arabidopsis, was isolated by activation tagging and the deduced sequence was similar to the sequence of TERMINAL FLOWER 1 (TFL1), an inhibitor of flowering that also shares sequence similarity with membrane-associated mammalian proteins.
Journal ArticleDOI
A pair of related genes with antagonistic roles in mediating flowering signals.
TL;DR: Flowering in Arabidopsis is promoted via several interacting pathways and FT acts in part downstream of CO and mediates signals for flowering in an antagonistic manner with its homologous gene, TERMINAL FLOWER1 (TFL1).
Journal ArticleDOI
The genetic basis of flowering responses to seasonal cues
Fernando Andrés,George Coupland +1 more
TL;DR: Progress is reported in defining the diverse genetic mechanisms that enable plants to recognize winter, spring and autumn to initiate flower development.
Journal ArticleDOI
Hd3a, a rice ortholog of the Arabidopsis FT gene, promotes transition to flowering downstream of Hd1 under short-day conditions.
Shoko Kojima,Yuji Takahashi,Yasushi Kobayashi,Lisa Monna,Takuji Sasaki,Takashi Araki,Masahiro Yano +6 more
TL;DR: Results indicate that Hd 3a encodes a protein closely related to Arabidopsis FT and that the function and regulatory relationship with Hd1 and CO, respectively, of Hd3a and FT are conserved between rice (an SD plant) andArabidopsis (a long-day plant).
Journal ArticleDOI
Arabidopsis, the Rosetta stone of flowering time?
Gordon G. Simpson,Caroline Dean +1 more
TL;DR: An integrated network of pathways that quantitatively control the timing of this developmental switch in Arabidopsis are identified and this framework provides the basis to understand the evolution of different reproductive strategies and how floral pathways interact through seasonal progression.
References
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Journal ArticleDOI
Early flower development in Arabidopsis.
TL;DR: The early development of the flower of Arabidopsis thaliana is described from initiation until the opening of the bud, and the morphogenesis, growth rate, and surface structure of floral organs were recorded in detail using scanning electron microscopy.
Journal ArticleDOI
LEAFY controls floral meristem identity in Arabidopsis
TL;DR: It is demonstrated that LEAFY is the Arabidopsis homolog of the FLORICAULA gene, which controls floral meristem identity in the distantly related species Antirrhinum majus.
Book
Flowering Plants: Evolution Above the Species Level
TL;DR: One of the most popular books now is the flowering plants evolution above the species level as discussed by the authors, but it is difficult to find the book in the book store around the city. And when you have found the store to buy the book, it will be so hurt when you run out of it.
Journal ArticleDOI
A developmental switch sufficient for flower initiation in diverse plants
TL;DR: Transgenic plants in which the flower-meristem-identity gene LEAFY of Arabidopsis is constitutively expressed are generated, suggesting a new level of regulation during flower development, as indicated by the competence of the main shoot to respond to LEAFy activity.
Journal ArticleDOI
A Mutation in the Arabidopsis TFL1 Gene Affects Inflorescence Meristem Development.
S. Shannon,D. R. Meeks-Wagner +1 more
TL;DR: The initial phenotypic characterization of an Arabidopsis mutation, terminal flower 1-1 (tfl1-1), that identifies a new genetic locus, TFL1, is presented, suggesting that tFL1 perturbs the establishment and maintenance of the inflorescence meristem.