相关实验视频

Updated: May 14, 2026

High-resolution Measurement of Odor-Driven Behavior in Drosophila Larvae

High-resolution Measurement of Odor-Driven Behavior in Drosophila Larvae

Published on: January 3, 2008

根据Drosophila幼虫的度而言,臭味剂的价值体的受体是Drosophila幼虫的基因

Sarah Perry¹, Jonathan T Clark², Paulina Ngo³

¹Graduate program in Genetics, Genomics, and Bioinformatics, University of California, Riverside, Riverside, CA 92521, USA.

The Journal of experimental biology

|March 21, 2024

概括

在Drosophila幼虫中,嗅觉受体Or7a驱动避免低度的 (E) -2-hexenal. 更高的度会激活有吸引力的神经元,超越厌恶并引起吸引力.

科学领域:

神经科学是一个神经科学.
嗅觉系统是一种嗅觉系统.
行为生物学行为生物学

背景情况:

嗅觉感知涉及嗅觉神经元向特定的大脑质细胞传输信号,创建用于识别的空间地图.
气味的价值可以随着度的变化而变化,在更高的水平上经常变得厌恶.
多虫幼虫对 (E) -2-hexenal 具有度依赖的气味价值,在低度下是厌恶的,在高度下是有吸引力的.

研究的目的:

研究Drosophila幼虫中 (E) -2-hexenal的度依赖的价值转移背后的分子和神经机制.
确定特定的嗅觉神经元和受体,参与调解对 (E) -2-hexenal的相反行为反应.

主要方法:

使用Drosophila幼虫作为一个模型系统.
专注于嗅觉受体Or7a用于厌恶,并确定了Or42a和Or85c用于吸引力.
研究了不同嗅觉神经元活动之间的相互作用,以确定行为结果.

主要成果:

确定了Or7a表达神经元作为低度 (E) -2-hexenal厌恶的主要媒介.
证明了吸引力嗅觉神经元 (Or42a和Or85c) 的激活可以在更高度下克服Or7a介导的回避.
展示了吸引力传递神经元可以以度依赖的方式覆盖厌恶传递通道.

结论:

嗅觉受体Or7a对于调解Drosophila幼虫的 (E)-2-hexenal厌恶至关重要.
在较高度下, (E) -2-hexenal 的吸引力取决于不同的嗅觉神经元 (Or42a,Or85c) 的激活,这些神经元会覆盖厌恶信号.
这项研究揭示了幼虫嗅觉系统中度依赖的气味价值交换的神经机制.

关键词:

这种植物是Drosophila.这种厌恶的厌恶.气味受体受体是什么气味受体嗅觉是一种嗅觉.

更多相关视频

High-resolution Quantification of Odor-guided Behavior in Drosophila melanogaster Using the Flywalk Paradigm

High-resolution Quantification of Odor-guided Behavior in Drosophila melanogaster Using the Flywalk Paradigm

Published on: December 11, 2015

Electrophysiological Recording from Drosophila Trichoid Sensilla in Response to Odorants of Low Volatility

Electrophysiological Recording from Drosophila Trichoid Sensilla in Response to Odorants of Low Volatility

Published on: July 27, 2017

相关概念视频

Olfaction

Olfaction

The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
The olfactory receptors are embedded in the cilia of the...

Olfactory Receptors: Location and Structure

Olfactory Receptors: Location and Structure

The process of olfaction, also known as the sense of smell, is a sophisticated chemical response system. The specialized sensory neurons that facilitate this process, known as olfactory receptor neurons, are situated in an upper segment of the nasal cavity, known as the olfactory epithelium. Olfactory sensory neurons are bipolar, with their dendrites extending from the epithelium's apex into the mucus that lines the nasal cavity. Airborne molecules, when inhaled, traverse the olfactory...

Physiology of Smell and Olfactory Pathway

Physiology of Smell and Olfactory Pathway

Humans detect odors with the help of specialized cells located in the upper part of the nasal cavity, called olfactory receptor neurons (ORNs). ORNs possess hair-like structures called cilia, which are receptive to sensations from the inhaled air. When an odorant molecule binds to a specific receptor on the cell of the cilia, it leads to a series of events that ultimately cause the ORN to send electrical signals to the olfactory bulb in the brain through the olfactory nerves.
The olfactory...