Valence of animal pheromone blends can vary due to differences in relative abundance of individual components. For example, in , whether a pheromone blend is perceived as "male" or "hermaphrodite" is determined by the ratio of concentrations of ascr#10 and ascr#3. The neuronal mechanisms that evaluate this ratio are not currently understood. We present data that suggest that the function of guanylyl cyclase ODR-1 in AWB neurons is required for the effect of ascr#3 that counteracts the activity of ascr#10. This finding defines a new module in the neuronal mechanism that determines the sexual identity of pheromone.
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http://dx.doi.org/10.17912/micropub.biology.000507 | DOI Listing |
bioRxiv
October 2024
Neuroscience Graduate Program, University of Michigan, Ann Arbor, MI, 48109, USA.
The ability of the nervous system to initiate intricate goal-directed behaviors in response to environmental stimuli is essential for metazoan survival. In this study, we demonstrate that the nematode perceives and reacts to dead conspecifics. The exposure to corpses as well as corpse lysates activates sensory neurons AWB and ASH, triggering a glutamate- and acetylcholine-dependent signaling cascade that regulates both immediate (aversion) and long-term (survival) responses to the presence of a death signature.
View Article and Find Full Text PDFFront Aging Neurosci
October 2024
Department of Neurology, Medical Research Institute, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China.
MicroPubl Biol
May 2024
Amity Institute of Neuropsychology and Neurosciences, Amity University, Noida, Uttar Pradesh, India.
Perception of external cues is important for enhancing the fitness and survival of animals. However, the role of odor perception in regulation of longevity and health is incompletely defined. Here, we show that the exposure to an aversive odor 2-nonanone reduces life span, brood size, feeding rate, and increases lipid storage in worms.
View Article and Find Full Text PDFLife Sci Alliance
August 2023
Department of Developmental Biology & Genetics, Indian Institute of Science, Bangalore, INDIA
The survival of a host during infection relies on its ability to rapidly sense the invading pathogen and mount an appropriate response. The bacterivorous nematode lacks most of the traditional pattern recognition mechanisms. In this study, we hypothesized that the 12 pairs of amphid sensory neurons in the heads of worms provide sensing capability and thus affect survival during infection.
View Article and Find Full Text PDFAging Cell
May 2023
Department of Translational Medicine and Physiology, Elson S. Floyd College of Medicine, Washington State University, Spokane, Washington, USA.
Studies in diverse species have associated higher temperatures with shorter lifespan and lower temperatures with longer lifespan. These inverse effects of temperature on longevity are traditionally explained using the rate of living theory, which posits that higher temperatures increase chemical reaction rates, thus speeding up the aging process. Recent studies have identified specific molecules and cells that affect the longevity response to temperature, indicating that this response is regulated, not simply thermodynamic.
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