Acid Phosphatase Activity May Affect the Tuber Swelling by Partially Regulating Sucrose-mediated Sugar Resorption in Potato | |
DaYong Wang1; Yong Lian2; DeWei Zhu2 | |
刊名 | Journal of Integrative Plant Biology
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2008 | |
卷号 | 50期号:6页码:733-741 |
关键词 | APase activity potato sucrose-mediated sugar resorption tuber swelling |
ISSN号 | 1672-9072 |
英文摘要 | APase activity is involved in regulating many physiological and developmental events by affecting the resorption process. In this study, we investigate the role of APase activity in tuber development in potato. APase activities were mainly localized in cytoplasm, gaps among cells and stroma of amyloplasts of parenchyma cells at the stage of tuber swelling. AP1, encoding a putative APase, was also highly expressed in swelling tubers and a low level of expression was observed in elongated stolons and matured tubers. Inhibition of APase activity by applying Brefeldin A, an inhibitor of APase production and secretion, significantly suppressed the tuber swelling and moderately affected the stolon elongation and the tuberization frequency. During tuber development, sucrose serves as the main soluble sugar for long-distance transportation and resorption. Moreover, inhibition of APase activity by Brefeldin A markedly reduced the sucrose content in tubers and further decreased the starch accumulation, suggesting that the function of APase in regulating the tuber swelling might be at least partially mediated by the sugar resorption. Exogenous sucrose treatments further indicate the important role of sucrose-mediated sugar resorption in tuber swelling. These results suggest that the APase activity might affect the tuber swelling by partially regulating the sucrose-mediated sugar resorption. |
学科主题 | 植物学 |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://111.203.20.206/handle/2HMLN22E/100678] ![]() |
专题 | 蔬菜花卉研究所 |
作者单位 | 1.Department of Genetics and Developmental Biology, Southeast University, Nanjing, 210009 2.Institute of Vegetative and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081 |
推荐引用方式 GB/T 7714 | DaYong Wang,Yong Lian,DeWei Zhu. Acid Phosphatase Activity May Affect the Tuber Swelling by Partially Regulating Sucrose-mediated Sugar Resorption in Potato[J]. Journal of Integrative Plant Biology,2008,50(6):733-741. |
APA | DaYong Wang,Yong Lian,&DeWei Zhu.(2008).Acid Phosphatase Activity May Affect the Tuber Swelling by Partially Regulating Sucrose-mediated Sugar Resorption in Potato.Journal of Integrative Plant Biology,50(6),733-741. |
MLA | DaYong Wang,et al."Acid Phosphatase Activity May Affect the Tuber Swelling by Partially Regulating Sucrose-mediated Sugar Resorption in Potato".Journal of Integrative Plant Biology 50.6(2008):733-741. |
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