Localization of muscarinic acetylcholine receptor in plant guard cells |
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Authors: | Fanxia Meng Xin Liu Shuqiu Zhang Chenghou Lou |
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Institution: | (1) Key Laboratory of Plant Physiology and Biochemistry, Ministry of Agriculture, College of Biological Sciences, China Agricultural University, 100094 Beijing, China |
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Abstract: | Acetylcholine (ACh), as an important neurotransmitter in animals, also plays a significant role in various kinds of physiological
functions in plants. But relatively little is known about its receptors in plants. A green fluorescence BODIPY FL-labeled
ABT, which is a high affinity ligand of muscarinic acetylcholine receptor (mAChR), was used to localize mAChR in plant guard
cells. InVicia faba L. andPisum sativum L., mAChR was found both on the plasma membrane of guard cells. mAChR may also be distributed on guard cell chloroplast membrane
ofVicia faba L. The evidence that mAChR localizes in the guard cells provides a new possible signal transduction pathway in ACh mediated
stomata movement. |
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Keywords: | guard cell mAChR fluorescent localization Vicia faba L Pisum sativum L |
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