Results 201 to 210 of about 15,502 (243)

Spatial dynamics of floral organ formation

Journal of Theoretical Biology, 2018
Understanding the emergence of biological structures and their changes is a complex problem. On a biochemical level, it is based on gene regulatory networks (GRN) consisting on interactions between the genes responsible for cell differentiation and coupled in a greater scale with external factors.
Yuriria Cortes-Poza, Pablo Padilla-Longoria, Elena Alvarez-Buylla   +2 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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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, Stephanie J. Conway, Elena M. Kramer   +2 more
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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 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, Schönenberger, Jürg   +1 more
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Molecular Studies on the Differentiation of Floral Organs

Annual Review of Plant Physiology and Plant Molecular Biology, 1991
INTRODUCTION . . . . . . . . . _ . . . _ . . . . . . . . . . . . . . . _ . . . _ _ . . . . . . . . . . . . . . . _ . , . _ . . . . . . . . . . . . _ . . . _ . . . . . . . . . . . . Floral Initiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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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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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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Characterization and Identification of a Novel Mutant fon(t) on Floral Organ Number and Floral Organ Identity in Rice

Journal of Genetics and Genomics, 2007
The floral-organ-number mutant fon(t) was firstly discovered in the progeny of a cross between a diploid (Chunjiang 683) and a haploid (SARIV-620-A) rice cultivar. The fon(t) mutant showed normal vegetative development and produced normal inflorescence structures.
Yun, Li, Peizhou, Xu, Hongyu, Zhang, Hai, Peng, Quanfang, Zhang, Xudong, Wang, Xianjun, Wu   +6 more
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Floral Organ Initiation and Development

2009
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Bemer, M., Angenent, G.C.
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