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Topic: Arabidopsis


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In the News (Sun 27 May 12)

  
  Arabidopsis thaliana - Wikipedia, the free encyclopedia
Arabidopsis thaliana, Thale Cress, or Mouse-ear Cress, a small flowering plant related to cabbage and mustard, is one of the model organisms for studying plant sciences, including genetics and plant development.
Arabidopsis is not a plant with major agronomic significance, however, there are several advantages that resulted in it becoming a model organism for understanding the genetic, cellular and molecular biology of flowering plants.
While gravitropic response of Arabidopsis root organs is the predominant tropic effect in these organs, specimens treated with mutagens and then selected for the absence of gravitropic action have shown both negative phototropic response to blue or white light, and positive phototropic response to red light.
en.wikipedia.org /wiki/Arabidopsis_thaliana   (873 words)

  
 Arabidopsis thaliana -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-10-22)
Arabidopsis was able to use the earlier records as templates to correct the HOTHEAD mutation and other (Click link for more info and facts about SNP) SNP's in the genome.
Early hypotheses propose that the record may be ((biochemistry) a long linear polymer of nucleotides found in the nucleus but mainly in the cytoplasm of a cell where it is associated with microsomes; it transmits genetic information from DNA to the cytoplasm and controls certain chemical processes in t) RNA-based.
Arabidopsis has been used extensively in the study of the genetic basis of (An orienting response to light) phototropism, (Plastid containing chlorophyll and other pigments; in plants that carry out photosynthesis) chloroplast alignment, and other light-influenced processes.
www.absoluteastronomy.com /encyclopedia/a/ar/arabidopsis_thaliana.htm   (322 words)

  
 Arabidopsis thaliana - Open Encyclopedia   (Site not responding. Last check: 2007-10-22)
Arabidopsis thaliana, or Thale Cress, a small flowering plant related to cabbage and mustard, is one of the model organisms for studying plant sciences, including genetics and plant development.
Similarly as mouse and fruit fly (Drosophila) are used as model organisms to understand human biology, Arabidopsis thaliana is used to study agronomic crops.
Arabidopsis has been used extensively in the study of the genetic basis of phototropism, chloroplast alignment, and other light influenced processes.
open-encyclopedia.com /Arabidopsis_thaliana   (186 words)

  
 nature genome gateway - papers - Arabidopsis thaliana   (Site not responding. Last check: 2007-10-22)
Although the efforts of Arabidopsis sequencers have perhaps been less heralded than those of their colleagues working on animal genomes, the results they have yielded are no less scientifically interesting.
Arabidopsis may be a simple plant (its detractors call it a weed!) with only 50 identified cells types and no complex nervous system or behavioural response, but its genome is surprisingly complex.
Arabidopsis was an obvious choice for the first plant genome project, but it will never feed the world.
www.nature.com /genomics/papers/a_thaliana.html   (539 words)

  
 Multinational Coordinated Arabidopsis thaliana Genome Research Project
Arabidopsis thaliana, a small plant in the mustard family, was chosen for this large-scale research effort because it offers many advantages for detailed genetic and molecular studies.
Because Arabidopsis is one of the most intensively studied organisms, and is a direct model for 250,000 closely related species, we believe that it is appropriate to undertake a major investment in developing new information retrieval tools (IRTs) for Arabidopsis in particular and plants in general.
The focus of research with Arabidopsis is likely to change in the future from the immediate emphasis on mapping, sequencing, and gene identification, to the long-term questions of general biology and gene function during plant growth and development.
arabidopsis.info /progreport7.html   (18343 words)

  
 Arabidopsis - Wikipedia, the free encyclopedia
This genus is of great interest since it contains Thale Cress (Arabidopsis thaliana), one of the model organisms used for studying plant biology.
Their findings confirm that the species formerly lumped together as Arabidopsis were polyphyletic.
All of the species in Arabidopsis are indigenous to Europe and two of the species have broad ranges extending into North America and Asia.
en.wikipedia.org /wiki/Arabidopsis   (682 words)

  
 Encyclopedia: Arabidopsis thaliana   (Site not responding. Last check: 2007-10-22)
Species see text Rockcress (Arabidopsis) are a genus of the Brassicaceae family.
Binomial name Drosophila melanogaster Meigen, 1830 dorsal view Drosophila melanogaster (Black-bellied Dew-lover) a dipteran (two-winged) insect, is the species of fruit fly that is commonly used in genetic experiments; it is among the most important model organisms.
The photosensitive piments phytochrome A and phytochrome B mediate this red light based phototropic response.
www.nationmaster.com /encyclopedia/Arabidopsis-thaliana   (1148 words)

  
 Other Model Organisms
Arabidopsis thaliana is a small flowering plant that belongs to the Brassica family, which includes species such as broccoli, cauliflower, cabbage, and radish.
Because Arabidopsis has a small genome relative to other plants and is easily grown under laboratory conditions, it has become the organism of choice for basic studies of the molecular genetics of flowering plants.
Scientists expect that systematic studies of Arabidopsis will offer important advantages for basic research in genetics and molecular biology and will illuminate numerous features of plant biology, including those of significant value to agriculture, energy, environment, and human health.
www.ncbi.nlm.nih.gov /About/model/otherorg.html   (242 words)

  
 Arabidopsis   (Site not responding. Last check: 2007-10-22)
Arabidopsis thaliana is a small flowering plant that is widely used as a model organism in plant biology.
Arabidopsis is a member of the mustard (Brassicaceae) family, which includes cultivated species such as cabbage and radish.
Such advantages have made Arabidopsis a model organism for studies of the cellular and molecular biology of flowering plants.
www.nih.gov /science/models/arabidopsis   (196 words)

  
 Arabidopsis
Arabidopsis thaliana, a small flowering plant that is a member of the mustard family, has become widely used as a model organism for the study of the molecular and cellular biology of plants.
The majority of this collection of papers deals with ways in which to measure or monitor gene structure; chief among these is the top-ranked work of Mark Schena and his colleagues on monitoring gene expression patterns with a novel cDNA microarray.
To construct this database, papers were extracted based on the title- abstract- and author-supplied keywords for Arabidopsis.
esi-topics.com /arab   (390 words)

  
 Plant and Animal Genome V Arabidopsis Workshop
Integrating the analytical data from the US and French Arabidopsis projects with the Japanese rice project and the USDA-IFG/North Carolina State University pine project has resulted in some tantalizing preliminary results on what may be specific to Arabidopsis, and, at the very least, allows commonalities across the evolutionary spectrum to be identified.
To produce a `mutation machine' in Arabidopsis and recover inserts in any gene of interest, this linked transposition behaviour was utilized to produce plant populations saturated for independent transpositions in specific chromosomal regions.
Plant populations, with an I element transposing on chromosome 4, were organized in pools and the extracted DNA used for PCR screening with primers derived from sequenced genes in chromosome 4.
weedsworld.arabidopsis.org.uk /Vol4i/genome_V.html   (1639 words)

  
 Read about Arabidopsis thaliana at WorldVillage Encyclopedia. Research Arabidopsis thaliana and learn about Arabidopsis ...   (Site not responding. Last check: 2007-10-22)
After spending over a year eliminating simpler explanations, studies indicated that the plants "recorded" versions of their genetic code going back at least four generations.
Arabidopsis was able to use earlier records as templates to correct the hothead mutation.
gravitropic response of Arabidopsis root organs is the predominant tropic effect in these organs, specimens treated with mutagens and then selected for the absence of gravitropic action have shown both negative phototropic response to blue or white light, and positive phototropic response to red light.
encyclopedia.worldvillage.com /s/b/Arabidopsis_thaliana   (288 words)

  
 LEHLE SEEDS Welcome & Home Page
A custom EMS mutation of up to 1.5 grams of Arabidopsis seeds with grow-out of the M2 is $742 for the mutation service and $141 per M1 flat grow-out with a 12 flat minimum.
After years of evaluation, we have determined that Arabidopsis is particularly well-adapted to this specific PMP peat moss which is very consistent because it comes from a Canadian producer who owns the peat farm.
In-house, Arabidopsis grow-out testing has indicated that PMP performance is essentially equal to that of enriched AIS.
www.arabidopsis.com   (1199 words)

  
 References - Arabidopsis - HORT640 - Metabolic Plant Physiology - Department of Horticulture and Landscape Architecture ...
Ascenzi R, Gantt JS 1997 A drought-stress-inducible histone gene in Arabidopsis thaliana is a member of a distinct class of plant linker histone variants.
Barth C, Conklin PL 2003 The lower cell density of leaf parenchyma in the Arabidopsis thaliana mutant lcd1-1 is associated with increased sensitivity to ozone and virulent Pseudomonas syringae.
Burget EG, Reiter WD 1999 The mur4 mutant of Arabidopsis is partially defective in the de novo synthesis of uridine diphospho L-arabinose.
web.ics.purdue.edu /~drhodes/hort640c/referen/arab.htm   (17748 words)

  
 ABRC Home Page
The Arabidopsis Biological Resource Center (ABRC) was established at The Ohio State University in September, 1991.
The mission of the ABRC is to acquire, preserve and distribute seed and DNA resources that are useful to the Arabidopsis research community.
Randy Scholl is the Director of the Center, and Associate Professor in the Department of Plant Cellular and Molecular Biology.
www.biosci.ohio-state.edu /~plantbio/Facilities/abrc/abrchome.htm   (210 words)

  
 Arabidopsis Cytochrome P450s
Arabidopsis Non-A type P450 intron map and legend.
The genetic chromosome maps were made with marker information from Stanford University's Arabidopsis thaliana database, which now resides at the TAIR site.
Williams PA, Cosme J, Sridhar V, Johnson EF, McRee DE (2000) The crystallographic structure of a mammalian microsomal cytochrome P450 monooxygenase: Structural adaptations for membrane binding and functional diversity.
www.p450.kvl.dk /p450.shtml   (456 words)

  
 Arabidopsis Resources
The Arabidopsis thaliana Genome Center (ATGC) - University of Pennsylvania USA (Physical chromosome maps and more such as browsing all hybridization data "for information on specific BACs, YACs, or markers, regardless of whether the subject was used as a probe or was hit by a probe" quote from E. Buehler)
Wild Relatives of Arabidopsis - Evolution and genetics of Arabidopsis and its close relatives, Arabis and Cardaminopsis
Inactivation of the Arabidopsis AGL5 MADS-box gene by homologous recombination.
www.arabidopsis.com /main/res/resource.html   (1640 words)

  
 BioMed Central | Full text | Genome wide analysis of Arabidopsiscore promoters
Interestingly, in Arabidopsis this motif is associated with dark-induced genes and is over-represented in genes under circadian regulation [12].
The potential participation of microsatellites in the control of gene expression is unclear, but according to recent studies in rice and Arabidopsis, their distribution may follow a gradient in the direction of transcription [18].
Thus, the position of the TATA box in Arabidopsis is more similar to what is typically the case in animal promoters, usually 25–30 nt from the TSS [2] than what is found in yeast, where the TATA box has a variable position in the [-100, -40] region [30].
www.biomedcentral.com /1471-2164/6/25   (5748 words)

  
 Arabidopsis Transformation
Arabidopsis thaliana ecotype Columbia grown in peat discs under 160 PAR light (supplied by 16 by 58W cool-white fluorescent Philips TLD840Reflex lamps supplemented with 4 by 40W incandescent lamps) with occasional fertilisation using 'Micacle Gro'.
Their 38mm peat discs fit nicely in AraBaskets which come from Lehle Seeds as part of the AraSystem, a modular (lego!) system for growing Arabidopsis.
Check what ecotype of Arabidopsis you are using, and try to use a known reliable ecotype (ColO and WS).
www.r9corporation.fsnet.co.uk /Methods/arabitransformation.htm   (1518 words)

  
 Arabidopsis Links   (Site not responding. Last check: 2007-10-22)
An Arabidopsis EST analysis database at the Univ. of Minnesota
Arabidopsis Genetics: Meinke lab at Oklahoma State University
The Arabidopsis thaliana Genome Center at the University of Pennsylvania
weeds.mgh.harvard.edu /atlinks.html   (262 words)

  
 Brian Tague - Arabidopsis
Arabidopsis has a much smaller genome than other flowering plants and is the first higher plant for which the complete genomic DNA sequence has been completed.
While Arabidopsis itself is of little agricultural importance, research in Arabidopsis has been exported into other plant systems that do have agricultural and economic importance.
Arabidopsis has also been incorporated into a number of the undergraduate laboratory experiments.
www.wfu.edu /~taguebw/arabidopsis.html   (552 words)

  
 Arabidopsis Genome Analysis
Recently, the complete sequence of the long and short arms of chromosome 4 was published in collaboration with the European Union Arabidopsis sequencing consortium (Mayer et al., 1999).
We have established a database of sequences repeated in the Arabidopsis genome.
Available here is a list of the annotation tools we use and a list of individuals who are experts in a given gene family and have agreed to assist in specific areas of annotation.
nucleus.cshl.org /protarab   (578 words)

  
 Syntenic Relationships between Medicago truncatula and Arabidopsis Reveal Extensive Divergence of Genome Organization ...
Arabidopsis and Medicago truncatula represent sister clades within the dicot subclass Rosidae.
Arabidopsis Genome Initiative (2000) Analysis of the genome sequence of the flowering plant Arabidopsis thaliana.
alboglabra that are homeologous to sequenced regions of chromosomes 4 and 5 of Arabidopsis thaliana.
www.plantphysiol.org /cgi/content/full/131/3/1018   (4838 words)

  
 Origins: Cold Spring Harbor: Tools
To learn more about using corn (maize) as a model organism, visit the Maize Page, published by the College of Agriculture at the University of Iowa.
Arabidopsis thaliana is a small flowering plant in the mustard family.
It has a very fast generation time, about six weeks, and was the first plant to have its genome sequenced.
www.exploratorium.edu /origins/coldspring/tools/corn.html   (347 words)

  
 Arabidopsis Sequencing at Stanford   (Site not responding. Last check: 2007-10-22)
The Arabidopsis Genome Initiative (AGI) has recently been launched to complete sequencing of the 120 Mb Arabidopsis genome by the year 2001, with the participation of 7 laboratories from the United States, 17 from the European Union, and one from Japan.
Analysis of the genome of the flowering plant Arabidopsis thaliana.
Please visit TAIR to view the current version of the Arabidopsis genome and annotation.
sequence-www.stanford.edu /ara/ArabidopsisSeqStanford.html   (208 words)

  
 T-DNAexpress : The SIGnAL Arabidopsis Gene Mapping Tool   (Site not responding. Last check: 2007-10-22)
We are grateful to Syngenta Inc. for this important donation to the Arabidopsis community.
Please contact the Arabidopsis Biological Resource Center (ABRC) to obtain a limited number of seeds for any of the public Salk insertion mutants or SSP U/C clones.
The Arabidopsis thaliana genome has been sequenced by an international collaboration collectively termed the Arabidopsis Genome Initiative AGI) (The Arabidopsis Genome Initiative, 2000, Nature, 408:796-815).
signal.salk.edu /cgi-bin/tdnaexpress   (330 words)

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