Sensing extreme environment: the diverse chemical receptors identified by comprehensive RNAseq analysis of hydrothermal vent endemic animals

The highly specialized hydrothermal vent endemic animals have long been
intriguing models for understanding the adaptability into extreme
environment. Despite a number of studies contributed to this topic,
however the ability of chemical sensing and related brain processes
considered as important evolutionary drivers, remain largely unexplored.
Here, we focus on the chemical receptors generally composed of the
ionotropic, olfactory, gustatory receptors, and transient potential
(TRP) channels that is for example known to receive signals of hydrogen
sulfide and acids in land animals. We demonstrated a systematic series
of experiments including identification of sensory cells, neural tract
tracing, chemical stimulation experiments, and finally found a unique
sensory system in the head parts of the/Paralvinella hesleri/ adaptive
to the most active zone of vent field. Also, the deep RNA sequencing
analysis of the alvinellid and other vent abundant animals provided the
unexpected diversity of chemical receptor genes, notably in TRP
channels, suggesting the characteristics have multiply evolved in the
levels from genes to systems.

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First Name: 
Shuichi
Last Name: 
Shigeno
Telephone: 
+81-46-867-9553
Affiliation: 
Institute for Biogeosciences, Japan Agency for Marine-Earth Science and Technology
First Name: 
Atsushi
Last Name: 
Ogura
Affiliation: 
Institute for Genome Research, The University of Tokushima, Japan
First Name: 
Shinji
Last Name: 
Tsuchida
Affiliation: 
Institute for Biogeosciences, Japan Agency for Marine-Earth Science and Technology
First Name: 
Katsunori
Last Name: 
Fujikura
Affiliation: 
Institute for Biogeosciences, Japan Agency for Marine-Earth Science and Technology
Choose keywords that are most applicable to your abstract. (Three maximum.): 
Physiology
Abstract ID: 
CBE5-130