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Calcium Regulation of Plant Productivity (CROPP)

植物生产力的钙调节 (CROPP)

基本信息

批准号：
BB/G025029/1
负责人：
Marc Knight
金额：
$ 40.2万
依托单位：
Durham University
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2009
资助国家：
英国
起止时间：
2009 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=BB%2FG025029%2F1
关键词：
Calcium Regulation Plant Productivity CROPP

项目摘要

Plants, in common with us and other organisms, require the ability to sense conditions in the environment e.g. what temperature it is, how bright it is etc. Most of our own senses operate through nerves. We have specific receptors in our skin, which are able to detect, for instance, temperature, and this information is relayed to the brain through our nerves. Pretty much all our senses start life with an increase in the concentration of the metal ion, calcium, in the cells very close to where the stimulus is perceived e.g. skin for touch and tongue for taste. It is this calcium elevation which actually triggers the nervous impulse, which finally leads to the brain, and tell us what we are feeling. Obviously, plants do not have nerves, but very interestingly, this increase in calcium upon sensing something happens in plants too, and is also extremely quick! So if plants don't have nerves, what is this calcium increase for? Well in the case of plants, the calcium triggers changes in the physiology of the plant to make it better able to cope with the change in the environmental conditions e.g. in response to low temperature, the plant will produce proteins which will allow it to tolerate freezing better. There are obviously many questions to answer on this important topic, but the three key ones are: (1) What genes/proteins does calcium switch on/off to make the plant able to tolerate the stress? (2) What mechanism does calcium use to do this? (3) How does the information from calcium encode specific information e.g. cold as compared to heat in plants (in humans we have different nerves for different stimuli: plants don't). It is to answer these fundamental questions that the research proposed here is addressed.

植物，与我们和其他生物一样，需要感知环境条件的能力，例如温度，亮度等。我们的皮肤上有特定的受体，能够检测到温度，这些信息通过我们的神经传递到大脑。几乎我们所有的感觉都是随着金属离子钙浓度的增加而开始的，钙在细胞中非常接近刺激被感知的地方，例如皮肤的触觉和舌头的味觉。正是这种钙的升高实际上触发了神经冲动，最终导致大脑，并告诉我们我们的感受。显然，植物没有神经，但非常有趣的是，这种钙的增加在植物中也会发生，而且非常快！那么，如果植物没有神经，那么钙的增加是为了什么？在植物的情况下，钙会引发植物生理学的变化，使其能够更好地科普环境条件的变化，例如，在应对低温时，植物会产生蛋白质，使其能够更好地耐受冷冻。关于这个重要的话题显然有很多问题需要回答，但三个关键问题是：（1）钙打开/关闭哪些基因/蛋白质使植物能够耐受压力？(2)钙是通过什么机制来做到这一点的？(3)来自钙的信息如何编码特定的信息，例如，与植物中的热相比，冷（在人类中，我们对不同的刺激有不同的神经：植物没有）。正是为了回答这些基本问题，这里提出的研究是解决。