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Topic: Arabidopsis thaliana

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  Arabidopsis FAQ
Arabidopsis ist ein Mitglied der Familie der Senfpflanzen (Brassicaceae), zu der viele Kulturpflanzen wie Kohl und Rettich gehören.
Dieser Vorteile wegen wurde Arabidopsis zum Modellorganismus bei der Untersuchung von Zell- und Molekularbiologie der Blütenpflanzen.
Arabidopsis thaliana wurde von Johannes Thal (hence, thaliana) im 16.
www.lemnatec.de /arabidopsis_faq.htm   (332 words)

  Arabidopsis thaliana Summary
Arabidopsis has no inherent agricultural value and is even considered a weed, but it is one of the favored model organisms of plant geneticists and molecular biologists, and it is the most thoroughly studied plant species at the molecular level.
Arabidopsis thaliana, commonly called arabidopsis, 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.
While gravitropic response of arabidopsis root organs is their predominant tropic response, specimens treated with mutagens and selected for the absence of gravitropic action showed negative phototropic response to blue or white light, and positive response to red light.
www.bookrags.com /Arabidopsis_thaliana   (2300 words)

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.
thaliana is studied by a multinational research community in academia, government and industry.
www.nih.gov /science/models/arabidopsis   (196 words)

 Arabidopsis thaliana
This little plant has become to plant biology what Drosophila melanogaster and Caenorhabditis elegans are to animal biology.
Arabidopsis is an angiosperm, a dicot from the mustard family (Brassicaceae).
Arabidopsis, however, has inactivating mutations in the genes — SRK and SCR — that prevent self-pollination in other members of the family.
users.rcn.com /jkimball.ma.ultranet/BiologyPages/A/Arabidopsis.html   (281 words)

 Arabidopsis thaliana populations in Sweden
Arabidopsis thaliana (Brassicaceae) is a highly selfing annual herbaceous weed that is distributed globally across northern temperate zones.
thaliana is a poor competitor; in order to persist at a site, a population typically requires a disturbance that will clear competitors.
thaliana less often exhibits its typical weedy lifestyle: populations are sometimes found in fallow fields, but south-facing mountain slopes are a common habitat for established populations.
home.uchicago.edu /~aea/collections.htm   (328 words)

 Construction and characterization of a bacterial artificial chromosome library of Arabidopsis thaliana
The library was screened with five Arabidopsis cDNA probes and one tomato probe and all probes hybridized to at least one (in most cases three) BAC clones in the library.
Arabidopsis thaliana is the best plant system to utilize this technique because of its small genome size, low repetitive DNA content, availability of a dense genetic map and existence of a large number of mapped probes.
Arabidopsis thaliana ecotype Columbia was grown in soil at 22 C under short days (11 h light) for 3 to 5 weeks.
weedsworld.arabidopsis.org.uk /Vol2/choi.html   (1107 words)

 Introduction - The Arabidopsis thaliana Genome Database
The flowering plant Arabidopsis thaliana is an important model system for identifying genes and determining their functions.
The evolution of Arabidopsis involved a whole-genome duplication, followed by subsequent gene loss and extensive local gene duplications, giving rise to a dynamic genome enriched by lateral gene transfer from a cyanobacterial-like ancestor of the plastid.
Arabidopsis has many families of new proteins but also lacks several common protein families, indicating that the sets of common proteins have undergone differential expansion and contraction in the three multicellular eukaryotes.
www.tigr.org /tdb/e2k1/ath1/intro.shtml   (179 words)

 LEHLE SEEDS Welcome & Home Page
As such, Arabidopsis roots, growing in the bottom 50-70 mm of medium, regardless of pot depth, are repeatedly subjected to severely reduced oxygen levels following routine subirrigation (Passioura 2006).
While it is common to grow Arabidopsis in containers as short as 2.25" (57 mm) in height, subirrigation under such conditions requires close monitoring to avoid prolonged root water-logging which quickly slows root tissue and can stunt whole Arabidopsis plant growth.
Given the fine porosity of common Arabidopsis media, recent research (Passioura 2006) suggests that a pot would need to be at least 120 mm deep to guard against the possibility of ever accidentally inducing complete hypoxic conditions throughout all a pot's growth medium.
www.arabidopsis.com   (2294 words)

 BioMed Central | Full text | Locational distribution of gene functional classes in Arabidopsis thaliana
thaliana is one of the most important model systems for identifying genes and determining their functions and its genome was the first complete genome of a plant to be sequenced.
thaliana and of note is a major re-annotation of the entire genome in 2005 [21].
The distribution of all genes and the distribution of individual functional classes of genes in Arabidopsis thaliana were found to be more clustered than we would expect from a locationally independent distribution; and although tandem duplications contribute considerably to clustering, they are clearly not the only factor affecting the observed clustered distributions.
www.biomedcentral.com /1471-2105/8/112   (5741 words)

 Arabidopsis thaliana Project
An introduction to the Arabidopsis thaliana genome project and to MAtDB (MIPS Arabidopsis thaliana Database)
Arabidopsis thaliana is the first plant for which the complete genome has been sequenced.
MAtDB started out as a repository for genome sequence data in the European Scientists Sequencing Arabidopsis (ESSA) project, part of the Arabidopsis Genome Initiative, but is moving towards becoming an integrated biological knowledge resource by integrating diverse data, tools, query and visualization capabilities.
mips.gsf.de /proj/thal/db   (218 words)

 Arabidopsis thaliana genome definition - Medical Dictionary definitions of popular medical terms
Arabidopsis thaliana genome: All of the genetic information contained in Arabidopsis thaliana, a plant belonging to the mustard family.
For example, Arabidopsis uses a chemical, glutamate, much as it is used in the human brain.
The Arabidopsis genome has been found to have 100 million base pairs to date and is estimated to have 25,000 genes to date.
www.medterms.com /script/main/art.asp?articlekey=13912   (214 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--A Model Plant Genome
thaliana, also known as mouse-ear cress or thale cress, has become a workhorse of plant biotechnology because it has only a small amount of genetic material.
He directs the Arabidopsis sequencing project at the ARS/University of California at Berkeley Plant Gene Expression Center in Albany, California.
Scientists in Japan and Europe are also part of the quest to unlock all of the sequences in the Arabidopsis genome.--By Marcia Wood, Agricultural Research Service Information Staff.
www.ars.usda.gov /is/AR/archive/jan99/dopsis0199.htm   (558 words)

 About Arabidopsis   (Site not responding. Last check: )
Arabidopsis thaliana possesses a relatively small genome marked by a remarkable absence of highly and moderately repetitive sequences.
Arabidopsis thaliana is a diploid with a small number of chromosomes (five).
The now completed sequence of the Arabidopsis thaliana genome as well as the many genomic DNA tools derived from this effort (complete contig maps, YAC clones, sequence annotations) and mRNA expression tools (cDNA libraries, EST sequences) is assembled and readily accessed at http://www.arabidopsis.org/.
arabidopsis-p450.biotec.uiuc.edu /About_Arabidopsis.shtml   (473 words)

 Unravelling a plant genome: Arabidopsis thaliana   (Site not responding. Last check: )
Arabidopsis thaliana (thale cress, Arabidopsis), a crucifer, represents an important model system in plant molecular genetics.
Many important processes in plant biology are now being dissected in Arabidopsis thaliana and important results concerning for example cell biology, developmental biology, biochemistry and physiology have been obtained.
Furthermore, clone libraries covering the Arabidopsis genome have been established and were used to assemble physical maps of all five chromosomes.
www.agbiotechnet.com /Reviews.asp?action=display&openMenu=relatedItems&ReviewID=727&Year=1999   (273 words)

 JYI: Expression analysis of Amidohydrolase Homologs from Arabidopsis thaliana and Arabidopsis suecica
Arabidopsis thaliana is the major plant model used throughout the world for physiology and molecular biology study.
suecica and A. thaliana plants was used for semi-quantitative RT-PCR to examine the expression of the sILR1 and ILR1 hydrolase genes.
Campanella, J.J., Ludwig-Mueller, J. and Town, C.D. (1996) Isolation and characterization of mutants of Arabidopsis thaliana with increased resistance to growth inhibition by IAA-conjugates.
www.jyi.org /volumes/volume8/issue1/articles/bakllamaja.html   (3192 words)

 Restriction Fragment Length Polymorphism Linkage Map for Arabidopsis thaliana -- Chang et al. 85 (18): 6856 -- ...
We have constructed a restriction fragment length polymorphism linkage map for the nuclear genome of the flowering plant Arabidopsis thaliana.
Markers consist of both cloned Arabidopsis genes and random low-copy-number genomic DNA clones that are able to detect polymorphisms with the restriction enzymes EcoRI, Bgl II, and/or Xba I. These cloned markers can serve as starting points for chromosome walking, allowing for the isolation of Arabidopsis genes of known map location.
Meiotically and Mitotically Stable Inheritance of DNA Hypomethylation Induced by ddm1 Mutation of Arabidopsis thaliana
www.pnas.org /cgi/content/abstract/85/18/6856   (1551 words)

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.
www.esi-topics.com /arab   (382 words)

 Drought Adaptation in Arabidopsis thaliana (NSF 2010 Project)
A major goal of the project is to map and identify genomic regions and characterize genes and gene networks that function in drought adaptation among plants native to habitats spanning extremes of water availability.
In addition, new resources will be developed for the study of quantitative genetics in Arabidopsis, including a mapping population and a series of genetic lines capturing genes controlling plant physiology.
thaliana genome has evolved functional variation in traits important in adaptation to habitats differing in water availability.
www.plantsciences.ucdavis.edu /droughtadaptation   (397 words)

 Mustard (Arabidopsis thaliana) genome definition - Medical Dictionary definitions of popular medical terms
Mustard (Arabidopsis thaliana) genome: All of the genetic information contained in Arabidopsis thaliana, a plant belonging to the mustard family.
The genomes of particular nonhuman organisms such as Arabidopsis thaliana have been studied for a number of reasons including the need to improve sequencing and analysis techniques.
The Arabidopsis thaliana genome has been found to have 100 million base pairs to date and is estimated to have 25,000 genes to date.
www.medterms.com /script/main/art.asp?articlekey=13893   (218 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 /pcmb/Facilities/abrc/abrchome.htm   (243 words)

 RHIZOPON   (Site not responding. Last check: )
Sur2 gene of arabidopsis thaliana, a modulator of auxin homeostasis, encodes the cytochrome p450 cyp83b1.
Interaction between physiological age of the stoolbed plants and the hormone treatment of the cherry and apple cuttings regarding the influence on rooting and growing of cuttings in the propagation year
Arabidopsis as a model to understand the molecular basis of root formation
www.rhizopon.nl /edit.rootformation.shtml   (1009 words)

 Affymetrix - Research Highlights - Beyond the Arabidopsis Genome
Seemingly little more than a garden pest, scientists are using the mustard weed, Arabidopsis thaliana, as a powerful model organism, to study the biology of numerous other plants.
Strikingly, the scientists found 30 percent of all Arabidopsis genes are actively expressed from both strands of the DNA double helix.
By identifying new genes and identifying new ways those genes are likely to be regulated, the Arabidopsis scientists have moved Arabidopsis research into a new era, where the monumental accomplishment of a complete genome sequence serves as the most rudimentary beginning for subsequent studies.
www.affymetrix.com /community/wayahead/beyond_arabidopsis.affx   (950 words)

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