Thekey differencebetween thigmotropism and thigmonasty is thatthigmotropism是植物器官触摸或物理接触固体物体的方向反应。同时,噻tigmonasty是植物响应触摸或振动的一种非方向运动的形式。
生物体对不同的内部和外部刺激做出反应。特别是,植物显示出不同的运动和对外部刺激的增长反应。Tropic and nastic movements在这些不同的运动中是两种类型。热带运动是向刺激朝着或远离刺激的生长运动。Nastic运动是植物运动,独立于刺激的方向。噻直形体和thigmonasty分别是两种类型的热带和nastic运动。在两种类型中,外部刺激都是触摸或接触。
内容
1.Overview and Key Difference
2.向触性是什么
3.What is Thigmonasty
4.Similarities Between Thigmotropism and Thigmonasty
5.Side by Side Comparison – Thigmotropism vs Thigmonasty in Tabular Form
6.概括
什么是thigmotropism?
Thigmotropism is the directional movement shown by a plant organ to touch or physical contact, especially with a solid object. This response is a result of differential growth. The best example for thigmotropism is the tendrils (thread-like structures) that coil around solid objects.植物卷须,当与实心物体接触时,开始盘绕并爬上它,以便为攀岩厂提供结构支撑。卷须不需要光即可响应触摸。他们只需要与表面连续接触。此外,有些植物有固执的根源可以爬上并紧贴树木。与固体物体接触时,这些固定根也显示出thigmotropism。
几个因素会影响植物中的噻汤神经。其中,钙通道和auxinhormone are two of the most important factors. Besides these, thigmotropism can be positive thigmotropism or negative thigmotropism. Tendrils (which grow towards the touch) show positive thigmotropism while roots (which grow away from the touch) show negative thigmotropism. While growing, if touched with a solid object, roots grow away from it by changing the direction and looking for the areas of least resistance.
What is Thigmonasty?
Thigmonasty is a type of nastic movements shown by plants to touch or vibration. But, unlike thigmotropism, thigmonasty is independent of the direction of the stimulus. So it is a non-directional response which is not influenced by the direction of the stimulus.
此外,丘脑反应主要是由于细胞内的turger压力变化而不是由植物生长引起的运动。关闭Mimosa pudicaleaves in response to touch is the best example for thigmonasty. Another example is the shutting of venus fly-trap.
What are the Similarities Between Thigmotropism and Thigmonasty?
- Thigmotropism and thigmonasty are two different types of plant movements shown by plants in response to the stimulus touch.
What is the Difference Between Thigmotropism and Thigmonasty?
Thigmotropism is a directional movement of plants in response to the stimulus of touch. In contrast, thigmonasty is a non-directional movement of plants in response to the stimulus of touch. So, this is the key difference between thigmotropism and thigmonasty. Moreover, the direction of thigmotropic response depends on the direction of the stimulus, while the direction of thigmonastic movement is independent of the stimulus’s position. Therefore, this is also a difference between thigmotropism and thigmonasty.
Another difference between thigmotropism and thigmonasty is that thigmotropism takes place as the stimulation of growth in particular regions of the plant while thigmonasty is generally associated with changes in turgor pressure within the cells rather than the growth. When considering examples, coiling of plant tendrils around a solid surface and the growth of roots in the soil are two examples for thigmotropism while the closing ofMimosa pudicaleaves and shutting of venus fly-trap are two examples for thigmonasty.
概括– Thigmotropism vs Thigmonasty
噻象形成症和thigmonasty是对刺激触摸的两种反应。thigmotropism和thigmonasty之间的关键区别在于,thigmotropism是对触摸的方向反应,而thigmonasty则独立于触摸方向。此外,由于生长反应而导致噻董作用是由于细胞内的胃部压力而不是生长而发生的,而硫疫对发生。
Reference:
1”感触性。”医学杂志ogy, 12 May 2014,Available here.
2. “Thigmotropism.” Wikipedia, Wikimedia Foundation, 1 Dec. 2019,Available here.
Image Courtesy:
1. “Brunnichia ovata” By Christopher Meloche, USDA ARS – released by the Agricultural Research Service, the research agency of the United States Department of Agriculture (Public Domain) viaCommons Wikimedia
2. “Mimosa pudica” By Tauʻolunga – Own work(CC BY-SA 3.0)viaCommons Wikimedia
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