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Related Concept Videos

Responses to Heat and Cold Stress02:45

Responses to Heat and Cold Stress

Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.

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Basic Caenorhabditis elegans Methods: Synchronization and Observation
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Cold Tolerance in the Nematode Caenorhabditis elegans.

Atsushi Kuhara1,2, Natsune Takagaki1,2, Misaki Okahata1,2

  • 1Faculty of Science and Engineering, Graduate School of Natural Science, Institute for Integrative Neurobiology, Konan University, Okamoto, Higashinada-ku, Kobe, Japan.

Advances in Experimental Medicine and Biology
|September 17, 2024
PubMed
Summary

The nematode Caenorhabditis elegans senses cold using its ASJ neuron, which regulates a pathway for survival. This discovery sheds light on cold tolerance mechanisms in this model organism.

Keywords:
Cold acclimationCold stimulusCold toleranceEndoribonucleaseInsulin pathwayPotassium channelSpermTemperature sensingTrimeric G-protein

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Area of Science:

  • Molecular Biology
  • Neuroscience
  • Environmental Physiology

Background:

  • Organisms must respond to environmental cues like temperature for survival.
  • Temperature extremes can disrupt essential biochemical reactions.
  • Caenorhabditis elegans is a model organism for studying biological responses.

Purpose of the Study:

  • To introduce mechanisms of cold tolerance and temperature acclimation in Caenorhabditis elegans.
  • To explore these mechanisms at molecular and physiological levels.
  • To present recent findings on the role of the ASJ neuron in cold sensing.

Main Methods:

  • Molecular genetics
  • Neural calcium imaging
  • Physiological analysis
  • Tissue-level examination

Main Results:

  • The ASJ neuron in C. elegans can sense temperature.
  • The ASJ neuron regulates a pathway involving sperm and gut cells for cold tolerance.
  • Novel insights into cold tolerance mechanisms have been uncovered.

Conclusions:

  • The ASJ neuron plays a critical role in sensing environmental temperature.
  • A previously unknown temperature-sensing pathway mediated by the ASJ neuron has been identified.
  • Understanding cold tolerance in C. elegans offers insights into broader biological adaptation.