Regulation of the inward K^+-channels in stomatal guard cells by cytoskeletal microtubules  

作　　者：Ximing Zhou Weihua Wu Ming Yuan Xuechen Wang 

机构地区：[1]China Agr Univ, Coll Biol, Dept Plant Sci, Beijing 100094, Peoples R China

出　　处：《Chinese Science Bulletin》1999年第10期919-923,共5页

摘　　要：Patch clamp techniques were applied to investigating the regulation of the inward K^+channels in Vicia stomatal guard cells by cytoskeletal microtubules. The intracellular addition of either microtubule-disassembling reagent amprophos-methyl (APM) or microtubule-stabilizing reagent taxol resulted in significant inhibition of the inward K^+ -currents across the plasma membranes of Vicia stomatal guard cells. The results suggest that the activation of the inward K^+channels in stomatal guard cells requires proper dynamic organization of cytoskeletal microtubules. The regulation of the inward K^+-channels in guard cells by microtubules may mediate the regulation of stomatal movements by cytoskeleton.Patch clamp techniques were applied to investigating the regulation of the inward K+-channels inVicia stomatal guard cells by cytoskeletal microtubules. The intracellular addition of either microtubule-disassembling reagent amprophos-methyl (APM) or microtubule-stabilizing reagent taxol resulted in significant inhibition of the inward K+-currents across the plasma membranes ofVicia stomatal guard cells. The results suggest that the activation of the inward K+-channels in stomatal guard cells requires proper dynamic organization of cytoskeletal microtubules. The regulation of the inward K+-channels in guard cells by microtubules may mediate the regulation of stomatal movements by cytoskeleton.

关 键 词：MICROTUBULES STOMATAL REGULATION K+ -channels. 

分 类 号：Q942[生物学—植物学]