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Number of floral organs in Circaeaster agrestis (Circaeasteraceae) and possible homeosis among floral organs

Plant Systematics and Evolution, 2007
98.9% of 5092 flowers from 1041 individuals of Circaeaster agrestis have five floral organs, the formula is P3A1G1 (73.13%), P2A2G1 (25.59%), and P2A1G2 (0.22%). Only 0.4% of the flowers have six floral organs and the formula is P3A1G2 (20 flowers) or P3A2G1 (one flower).
X.-H. Tian, L. Zhao, Y. Ren, X.-H. Zhang
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Floral organ identity: 20 years of ABCs

Seminars in Cell & Developmental Biology, 2010
One of the early successes of the application of molecular genetics to study plant development was the discovery of a series of genes that act together, in an apparently simple combinatorial model, to specify the identity of the different organs of a flower.
Causier, B.   +2 more
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Quantitative live imaging of floral organ initiation and floral meristem termination in Aquilegia

Development, 2022
ABSTRACT In-depth investigation of any developmental process in plants requires knowledge of both the underpinning molecular networks and how they directly determine patterns of cell division and expansion over time. Floral meristems (FMs) produce floral organs, after which they undergo floral meristem termination (FMT); precise control ...
Ya Min   +2 more
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Floral Organ Initiation and Development

2009
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Bemer, M., Angenent, G.C.
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Floral Structure and Organization in Platanaceae

International Journal of Plant Sciences, 2009
Developing and mature inflorescences and flowers of several representatives of Platanus were studied to clarify various aspects of floral structure and organization. Special attention was given to perianth differentiation. Extant Platanaceae are monoecious with unisexual flowers aggregated into compact, spherical inflorescence heads.
von Balthazar-Schönenberger, Anna Maria Louise   +1 more
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Development of the Floral Organs

2007
AbstractIt is becoming clear that flower development is a cascade, with flowering time integrators activating floral meristem identity genes which activate floral organ identity genes. The floral organ identity genes themselves encode transcription factors, and are predicted to activate the many structural genes required to form the new organs, as well
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Mutations associated with floral organ number in rice

Planta, 1996
How floral organ number is specified is an interesting subject and has been intensively studied in Arabidopsis thaliana. In rice (Oryza sativa L.), mutations associated with floral organ number have been identified. In three mutants of rice, floral organ number 1 (fon1) and the two alleles, floral organ number 2-1 (fon2-1) and floral organ number 2-2 ...
Nobuhiro, Nagasawa   +4 more
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Genetic basis for innovations in floral organ identity

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, 2005
AbstractOf the many innovations associated with the radiation of the angiosperms, the evolution of a petal identity program is among the best understood from a genetic standpoint. Although the existing data do indicate that similar genetic mechanisms control petal development across diverse taxa, there is also considerable evidence for variability in ...
Kramer, Elena, Jaramillo, M. Alejandra
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Molecular and regulatory mechanisms controlling floral organ development

The FEBS Journal, 2016
The genetic and molecular mechanisms that underlie the formation of angiosperm flowers have been studied extensively for nearly three decades. This work has led to detailed insights into the gene regulatory networks that control this vital developmental process in plants.
Darragh, Stewart   +2 more
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Patterns and Polarity in Floral Meristem and Floral Organ Initiation

Critical Reviews in Plant Sciences, 2014
The initial event in plant floral organogenesis is bract specification, followed by floral meristem (FM) initiation in bract axils, but initiation signals and the interplay between both lateral organs remain unelucidated. Floral organs are initiated on the flanks of the outgrowing FM and the enormous diversity in floral morphology throughout the plant ...
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