摘要
It has been known that the neurotransmitter acetylcholine (ACh) also exists in plants and is able to regu-late the movement of stomata. In another aspect, Ca2+/CaM as the second messengers have a critical role of signal trans-duction in stomatal guard-cell. Here we showed that Ca2+/CaM were also involved in the ACh regulated stomatal movement. In the medium containing Ca2+, the Ca2+ channel blockers (NIF and Ver) and CaM inhibitors (TFP and W7) could neutralize the ACh induced stomatal opening, however, they are ineffective in the medium containing K+. Those re-sults indicated that Ca2+/CaM were involved in the signal transduction pathway of ACh regulating stomatal move-ment.
It has been known that the neurotransmitter acetylcholine (ACh) also exists in plants and is able to regu-late the movement of stomata. In another aspect, Ca2+/CaM as the second messengers have a critical role of signal trans-duction in stomatal guard-cell. Here we showed that Ca2+/CaM were also involved in the ACh regulated stomatal movement. In the medium containing Ca2+, the Ca2+ channel blockers (NIF and Ver) and CaM inhibitors (TFP and W7) could neutralize the ACh induced stomatal opening, however, they are ineffective in the medium containing K+. Those re-sults indicated that Ca2+/CaM were involved in the signal transduction pathway of ACh regulating stomatal move-ment.
基金
supported by the National Key Basic Research Special Funds of China(Grant No.G1999011700).
