脱水和复水对复苏植物牛耳草离体叶片光合作用的影响  

Effects of Dehydration and Rehydration on Photosynthesis of Detached Leaves of the Resurrective Plant Boea hygrometrica

作　　者：邓馨[1] 胡志昂[1] 王洪新[1] 温小刚[2] 匡廷云[2] 

机构地区：[1]中国科学院植物研究所,北京100093 [2]中国科学院植物研究所光合作用基础研究开放实验室,北京100093

出　　处：《Acta Botanica Sinica》2000年第3期321-323,共3页Acta Botanica Sinica（植物学报：英文版）

基　　金：国家重点基础研究发展规划项目

摘　　要：Fluorescence induction kinetics was used to investigate the effects of dehydration and rehydration on photosynthesis of detached leaves of the desiccation_tolerant, resurrective plant Boea hygrometrica (Bunge) R. Br. In comparison with the desiccation_intolerant plant Chirita heterotricha Merr., the PSⅡphotochemical activity of Boea hygrometrica was characterized by a faster decline during dehydration and a much higher capacity of recovery during rehydration. By means of native PAGE, it was further shown that the thylakoid pigment_protein complexes of Boea hygrometrica were highly stable during dehydration and rehydration. These features may contribute to the extreme desiccation resistance of photosynthesis apparatus of resurrective plant Boea hygrometrica .Fluorescence induction kinetics was used to investigate the effects of dehydration and rehydration on photosynthesis of detached leaves of the desiccation_tolerant, resurrective plant Boea hygrometrica (Bunge) R. Br. In comparison with the desiccation_intolerant plant Chirita heterotricha Merr., the PSⅡphotochemical activity of Boea hygrometrica was characterized by a faster decline during dehydration and a much higher capacity of recovery during rehydration. By means of native PAGE, it was further shown that the thylakoid pigment_protein complexes of Boea hygrometrica were highly stable during dehydration and rehydration. These features may contribute to the extreme desiccation resistance of photosynthesis apparatus of resurrective plant Boea hygrometrica .

关 键 词：复苏植物 耐脱水性 叶绿素 光合作用 

分 类 号：Q945[生物学—植物学]