细胞信号转导通路研究中,做抑制剂干扰的时候,为什么以DMSO做对照呢?

转导：应该是讲一种信息或者一种胞外信号转化成另外一种信号（相当与第二信使camp）
传导：相当于是将上面细胞的刺激冲动传向下一个细胞,起着一种传递承接的作用,生化性质上没有什么改变.

1.植物的细胞信息传导更具被动性；
2.植物能够自行供给细胞信息传导所需能量；
3.动物在远距离的信息传导有赖于神经系统和循环系统,而植物仅有木质部和韧皮部两大传导系统,因此在长距离的细胞信息传导过程中植物也有区别于动物
由此总结根本区别在于：1.植物不具备自身移动性的运动能力；2.植物可制造有机物积聚能量；3.植物不具备明显神经和感觉器官
是生命中的化学吧~我也刚写完~能想到的就这些了

1.Guard cells respond cell-autonomously to physiological stimulation,allowing cell biological analyses of stomatal opening and closing in response to various stimuli.
2.Guard cells respond to most of the classically known hormonal stimuli in plants,illustrating that presently unidentified but essential plant receptors and early signalling mechanisms function in these cells.
3.A network of ion channels in the plasma membane and tonoplast of guard cells has been characterized that,together with metabolic responses,controls stomatal movements (see Figure 1).Being targets of early signaling branches these ion channels provide effective probes to identify and characterize upstream regulators.
4.Stomatal aperture regulates plant CO2 intake and water loss,thus critically influencing growth and water stress responsiveness.In addition,powerful techniques have recently been developed and adapted for guard cell signal transduction studies,allowing interdisciplinary,molecular genetic,cell biological,second messenger,biophysical,physiological and genomic analyses.

细胞上一般有表面受体 可以与另一个细胞的抗原或释放的递质等结合 实现信息的传递

cAMP合成所需要的前体是AMP,葡萄糖参与代谢时,AMP大量的转向ADP再进一步转向ATP的合成,因此,cAMP含量减少.
胰岛素作用的受体是Gi型受体,
a亚基结合Gs型G蛋白的βγ亚基,使之失活,阻碍转导；
此外Gi型G蛋白的βγ亚基结合Gs型G蛋白的a亚基,也阻碍转导,因此,cAMP的合成减少.
至于磷酸二酯酶的激活,没有学过.应该是整个信号转导过程的综合作用.

细胞信号转导是指细胞通过胞膜或胞内受体感受信息分子的刺激,经细胞内信号转导系统转换,从而影响细胞生物学功能的过程.