Genetic complementation of a floral homeotic mutation, apetala3, with an Arabidopsis thaliana gene homologous to DEFICIENS of Antirrhinum majus

1994 ◽  
Vol 26 (1) ◽  
pp. 465-472 ◽  
Author(s):  
Hiroyuki Okamoto ◽  
Azusa Yano ◽  
Hideaki Shiraishi ◽  
Kiyotaka Okada ◽  
Yoshiro Shimura
Keyword(s):  
Arabidopsis Thaliana ◽  
Genetic Complementation ◽  
Antirrhinum Majus ◽  
Homeotic Mutation ◽  
Floral Homeotic

scholarly journals A novel Ti-plasmid-convertible lamba phage vector system suitable for gene isolation by genetic complementation of Arabidopsis thaliana mutants

1995 ◽  
Vol 7 (5) ◽  
pp. 849-856 ◽  
Author(s):  
Takuichi Fuse ◽  
Hiroaki Kodama ◽  
Nobuaki Hayashida ◽  
Kazuo Shinozaki ◽  
Mitsuo Nishimura ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Gene Isolation ◽  
Ti Plasmid ◽  
Genetic Complementation ◽  
Vector System

The regulation of flowering in Arabidopsis thaliana: meristems, morphogenesis, and mutants

1995 ◽  
Vol 73 (7) ◽  
pp. 959-981 ◽  
Author(s):  
George W. Haughn ◽  
Elizabeth A. Schultz ◽  
Jose M. Martinez-Zapater
Keyword(s):  
Arabidopsis Thaliana ◽  
Transcription Factors ◽  
Floral Development ◽  
Regulatory Proteins ◽  
Antirrhinum Majus ◽  
Complete Understanding ◽  
Temporal And Spatial Patterns ◽  
Temporal And Spatial ◽  
Floral Evocation ◽  
Key Questions

In the last decade, the study of mutants defective in floral development has contributed significantly to our understanding of floral evocation and morphogenesis. Genes in Arabidopsis thaliana and Antirrhinum majus that play key roles in (i) the transition from the vegetative to reproductive phase, (ii) the activation of floral development in specific shoots, and (iii) the unique arrangement of floral organs have been identified genetically and in many cases cloned. Many of the genes appear to encode transcription factors that act to select specific developmental programs of division and differentiation for groups of primordial cells. Other genes may be involved in detecting environmental conditions and transducing the signal to the developing meristems. Key questions remaining include how the regulatory proteins are produced in specific temporal and spatial patterns, interact with each other and initiate specific morphological programs. Although current research on floral morphogenesis has been limited to only a few species there is growing evidence that the basic processes are common to all flowering plants.Thus the information and tools currently being generated should be useful for studying a wide variety of flowering species. It seems reasonable to predict that within the next decade, we should have a fairly complete understanding of the basic mechanisms underlying floral morphogenesis and its evolution among the angiosperms. Key words: Arabidopsis thaliana, floral morphogenesis, molecular genetics.

The floral volatile, methyl benzoate, from snapdragon (Antirrhinum majus) triggers phytotoxic effects in Arabidopsis thaliana

Planta ◽  
2007 ◽  
Vol 226 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Jun-ichiro Horiuchi ◽  
Dayakar V. Badri ◽  
Bruce A. Kimball ◽  
Florence Negre ◽  
Natalia Dudareva ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Methyl Benzoate ◽  
Antirrhinum Majus ◽  
Phytotoxic Effects ◽  
Floral Volatile

scholarly journals Molecular Population Genetics of Floral Homeotic Loci: Departures From the Equilibrium-Neutral Model at the APETALA3 and PISTILLATA Genes of Arabidopsis thaliana

Genetics ◽  
1999 ◽  
Vol 151 (2) ◽  
pp. 839-848 ◽  
Author(s):  
Michael D Purugganan ◽  
Jane I Suddith
Keyword(s):  
Arabidopsis Thaliana ◽  
Low Frequency ◽  
Population Expansion ◽  
Homeotic Genes ◽  
Nucleotide Polymorphisms ◽  
Molecular Population Genetics ◽  
Regulatory Loci ◽  
Nuclear Loci ◽  
Floral Regulatory Genes ◽  
Floral Homeotic

Abstract Molecular variation in genes that regulate development provides insights into the evolutionary processes that shape the diversification of morphogenetic pathways. Intraspecific sequence variation at the APETALA3 and PISTILLATA floral homeotic genes of Arabidopsis thaliana was analyzed to infer the extent and nature of diversity at these regulatory loci. Comparison of AP3 and PI diversity with three previously studied genes revealed several features in the patterning of nucleotide polymorphisms common between Arabidopsis nuclear loci, including an excess of low-frequency nucleotide polymorphisms and significantly elevated levels of intraspecific replacement variation. This pattern suggests that A. thaliana has undergone recent, rapid population expansion and now exists in small, inbred subpopulations. The elevated intraspecific replacement levels may thus represent slightly deleterious polymorphisms that differentiate distinct ecotypes. The distribution of replacement and synonymous changes in AP3 and PI core and noncore functional domains also indicates differences in the patterns of molecular evolution between these interacting floral regulatory genes.

Heterologous myb genes distinct from GL1 enhance trichome production when overexpressed in Nicotiana tabacum

Development ◽  
1999 ◽  
Vol 126 (4) ◽  
pp. 671-682 ◽  
Author(s):  
T. Payne ◽  
J. Clement ◽  
D. Arnold ◽  
A. Lloyd
Keyword(s):  
Arabidopsis Thaliana ◽  
Transcription Factors ◽  
Nicotiana Tabacum ◽  
Cell Shape ◽  
Cellular Differentiation ◽  
Antirrhinum Majus ◽  
Tobacco Plants ◽  
Developmental Abnormalities ◽  
Myb Gene ◽  
Myb Genes

Myb-class transcription factors implicated in cell shape regulation were overexpressed in Arabidopsis thaliana and Nicotiana tabacum in an attempt to assess the extent to which cellular differentiation programs might be shared between these distantly related plants. GLABROUS 1, a myb gene required for trichome development in Arabidopsis, did not alter the trichome phenotype of the tobacco plants in which it was overexpressed. MIXTA, which in Antirrhinum majus is reported to regulate certain aspects of floral papillae development, did not complement the glabrous 1 mutant of Arabidopsis. However, 35S:MIXTA transformants of N. tabacum displayed various developmental abnormalities, most strikingly production of supernumerary trichomes on cotyledons, leaves and stems. In addition, floral papillae were converted to multicellular trichomes. CotMYBA, a myb gene which is expressed in Gossypium hirsutum ovules and has some homology to MIXTA, was also overexpressed in the two species. A similar but distinct syndrome of abnormalities, including the production of cotyledonary trichomes, was observed in 35S:CotMYBA tobacco transformants. However, CotMYBA did not alter trichome production in Arabidopsis. These results suggest that the trichomes of Arabidopsis and Nicotiana are merely analogous structures, and that the myb genes regulating their differentiation are specific and separate.

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