Effect of Particulate Materials on Population Growth of the Free-Living Nematode Caenorhabditis briggsae

1979 ◽  
Vol 160 (2) ◽  
pp. 203-207 ◽  
Author(s):  
A. C. Cheng ◽  
N. C. Lu ◽  
G. M. Briggs ◽  
E. L. R. Stokstad
Keyword(s):  
Population Growth ◽  
Caenorhabditis Briggsae ◽  
Free Living ◽  
Particulate Materials ◽  
Free Living Nematode

scholarly journals Cold survival and its molecular mechanisms in a locally adapted nematode population

2021 ◽  
Author(s):  
Wenke Wang ◽  
Anna G. Flury ◽  
Jennifer L. Garrison ◽  
Rachel B. Brem
Keyword(s):  
Molecular Mechanisms ◽  
Mutational Analysis ◽  
Transcriptional Profiling ◽  
Expression Patterns ◽  
Evolutionary Model ◽  
Caenorhabditis Briggsae ◽  
Free Living ◽  
Free Living Nematode ◽  
In The Wild ◽  
Shed Light

Since Darwin, evolutionary biologists have sought to understand the drivers and mechanisms of natural trait diversity. The field advances toward this goal with the discovery of phenotypes that vary in the wild, their relationship to ecology, and their underlying genes. Here, we established resistance to extreme low temperature in the free-living nematode Caenorhabditis briggsae as an ecological and evolutionary model system. We found that C. briggsae strains of temperate origin were strikingly more cold-resistant than those isolated from tropical localities. Transcriptional profiling revealed expression patterns unique to the resistant temperate ecotype, including dozens of genes expressed at high levels even after multiple days of cold-induced physiological slowdown. Mutational analysis validated a role in cold resistance for seven such genes. As the temperate C. briggsae population likely diverged only ~700 years ago from tropical ancestors, our findings highlight a candidate case of very rapid, robust, and genetically complex adaptation, and shed light on the mechanisms at play.

Freeze-thaw survival of the free-living nematode Caenorhabditis briggsae

Cryobiology ◽  
1975 ◽  
Vol 12 (5) ◽  
pp. 497-505 ◽  
Author(s):  
M. Haight ◽  
J. Frim ◽  
J. Pasternak ◽  
H. Frey
Keyword(s):  
Caenorhabditis Briggsae ◽  
Free Living ◽  
Freeze Thaw ◽  
Free Living Nematode
Sign in / Sign up

Export Citation Format

Share Document