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《Journal of Fruit Science》 2005-06
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Effect of G protein regulator on pollen germination and tube growth in vivo in Pyrus pyrifolia Nakai.

ZHAO Cai-ping1, ZHANG Shao-ling1*, XU Guo-hua2, WU Jun1, LIU Zhao-long1(1College of Horticulture,Nanjing Agricultural University,Nanjing, Jiangsu 210095 China; 2Department of Biology,Jiangsu Institute of Education,Nanjing,Jiangsu 210013 China)  
The effects of the cholera toxin (CTX) and pertussis toxin (PTX), which can activate and antagonize the heterotrimeric G protein respectively, on pollen germination and tube growth in vivo were investigated by using fluorescence microscope. The results revealed that: 1) 24 h and 48 h after pollination, the percentage of self-pollen germination on the stigma can be increased by using CTX treating the stigma before pollination, the percentage of cross pollen germination can be decreased by PTX treating stigma before pollination. 2) Self-pollen tube growth could be promoted by treating stigma with CTX, but the pollen tube growth was inhibited by treating stigma with PTX before cross pollination.
【Fund】: 国家自然科学基金资助项目(30270926)。
【CateGory Index】: S661.2
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