نتایج جستجو برای: caenorhabditis elegans

تعداد نتایج: 25398  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2007
William M Winston Marie Sutherlin Amanda J Wright Evan H Feinberg Craig P Hunter

In plants and in the nematode Caenorhabditis elegans, an RNAi signal can trigger gene silencing in cells distant from the site where silencing is initiated. In plants, this signal is known to be a form of dsRNA, and the signal is most likely a form of dsRNA in C. elegans as well. Furthermore, in C. elegans, dsRNA present in the environment or expressed in ingested bacteria is sufficient to trig...

2014
Feifan Zhang

Gene regulatory factors that control the identities of specific neuron types in Caenorhabditis elegans

Journal: :Insects 2023

Gall-inducing insects often contain high concentrations of phytohormones, such as auxin and cytokinin, which are suggested to be involved in gall induction, but no conclusive evidence has yet been obtained. There two possible approaches investigating the importance phytohormones induction: demonstrating either that phytohormone productivity can induce gall-inducing ability non-gall-inducing or ...

Journal: :Journal of nematology 1991
C H Opperman S Chang

The ability of Caenorhabditis elegans to recover from exposure to high doses of aldicarb and fenamiphos was examined at the organismal and biochemical levels by determination of movement and acetylcholinesterase activity. Nematodes recovered rapidly from a 24-hour exposure to both compounds at concentrations that caused complete paralysis. Acetylcholinesterase regained nearly full activity afte...

2007
WALTER SUDHAUS KARIN KIONTKE

The new gonochoristic member of the Caenorhabditis Elegans group, C. brenneri sp. n., is described. This species is reproductively isolated at the postmating level from its sibling species, C. remanei. Between these species, only minute morphological differences are found, but there are substantial genetic differences. The stem species pattern of the Elegans group is reconstructed. C. brenneri ...

Journal: :Briefings in functional genomics & proteomics 2004
Jonathan Astin Alyce Merry Jeena Rajan Patricia E Kuwabara

The nematode Caenorhabditis elegans is widely used as a model organism for studying many fundamental aspects of development and cell biology, including processes underlying human disease. The genome of C. elegans encodes over 19,000 protein-coding genes and hundreds of non-coding RNAs. The availability of whole genome sequence has facilitated the development of high throughput techniques for el...

Journal: :Development 2003
John Wang Stuart K Kim

The dauer is a developmental stage in C. elegans that exhibits increased longevity, stress resistance, nictation and altered metabolism compared with normal worms. We have used DNA microarrays to profile gene expression differences during the transition from the dauer state to the non-dauer state and after feeding of starved L1 animals, and have identified 1984 genes that show significant expre...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2000
L Friedman J J Higgin G Moulder R Barstead R T Raines J Kimble

The genome of Caenorhabditis elegans possesses two genes, dpy-18 and phy-2, that encode alpha subunits of the enzyme prolyl 4-hydroxylase. We have generated deletions within each gene to eliminate prolyl 4-hydroxylase activity from the animal. The dpy-18 mutant has an aberrant body morphology, consistent with a role of prolyl 4-hydroxylase in formation of the body cuticle. The phy-2 mutant is p...

2015
S Anaid Diaz Mark Viney

Organisms can end up in unfavourable conditions and to survive this they have evolved various strategies. Some organisms, including nematodes, survive unfavourable conditions by undergoing developmental arrest. The model nematode Caenorhabditis elegans has a developmental choice between two larval forms, and it chooses to develop into the arrested dauer larva form in unfavourable conditions (sp...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2005
Nansheng Chen Shraddha Pai Zhongying Zhao Allan Mah Rebecca Newbury Robert C Johnsen Zeynep Altun Donald G Moerman David L Baillie Lincoln D Stein

Taking advantage of the recent availability of the whole genome sequence of Caenorhabditis briggsae, a closely related nematode to Caenorhabditis elegans, we have examined the chemosensory gene superfamily by using comparative genomic methods. We have identified a chemosensory gene family, serpentine receptor class ab (srab), which exists in both species with 25 members in C. elegans and 14 mem...

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