相关实验视频
Updated: Jan 9, 2026

07:53
Large-Scale Gravitaxis Assay of Caenorhabditis Dauer Larvae
Published on: May 31, 2022
2.7K
多模态传感输入和机械传感元件介导C. 优雅的人 负的重力学xis
Caroline Ackley1,2, Lindsey Washiashi1, Neda Ziaei Kajbaf1,3
1Department of MCD Biology and Neuroscience Research Institute, University of California, California, Santa Barbara, CA 93106, USA.
iScience
|December 4, 2025
概括
线虫虫C. elegans表现出负重力,向上移动,反对重力. 这种行为依赖于特定的机械感知基因,这表明物种之间保留了重力感知机制.
科学领域:
- * 动物学 动物学
- * 神经科学是一门神经科学.
- * 遗传学 遗传学是一门学科
背景情况:
- * 感知地球的重力对于生物的方向,导航和自身感知至关重要.
- * 线虫虫C. elegans对重力的反应还不太清楚.
- *多种感官模式可能与重力感应相互作用.
研究的目的:
- * 为了研究C. elegans的重力行为.
- * 确定C. elegans体内的重力感觉背后的分子机制.
- * 探索动物族系中引力感应的潜在同质性.
主要方法:
- *行为分析观察C. elegans幼虫和成人的垂直迁移.
- *测试光和电磁场对重力学的影响.
- * 选已知的机械传感基因,以确定它们在引力作用中的作用.
主要成果:
- * C. elegans dauer幼虫和成年人表现出一致的向上运动,表明负重力.
- *这种引力行为是由光和电磁场调节的.
- *MEC-5 (原),MEC-7/12 (管) 和TRPA-1基因对于重力作用至关重要,而MEC-4/10通道则不是.
- *重力作用独立于地球的地磁场.
结论:
- *C. elegans表现出明显的负重力行为.
- *C. elegans的重力感应涉及特定的机械感应元件,包括TRPA-1离子通道.
- * 鉴定出来的机制表明,在不同动物族群中,重力感应的途径是保留的,可能涉及同类离子通道.
相关概念视频
Mechanism of Ciliary Motion
4.8K
The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
4.8K
Responses to Gravity and Touch
41.6K
Gravitropism: Plant Responses to Gravity
41.6K
Major Somatic Sensory Pathways
2.3K
Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the...
2.3K
Somatosensation
42.9K
The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
42.9K
The Vestibular System
43.3K
The vestibular system is a set of inner ear structures that provide a sense of balance and spatial orientation. This system is comprised of structures within the labyrinth of the inner ear, including the cochlea and two otolith organs—the utricle and saccule. The labyrinth also contains three semicircular canals—superior, posterior, and horizontal—that are oriented on different planes.
43.3K
Equilibrium and Balance
6.2K
The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
6.2K

