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园艺学报 ›› 2002, Vol. 29 ›› Issue (3): 278-279.

• 研究报告 • 上一篇    下一篇

水分胁迫对番茄幼苗转化酶表达及糖代谢的影响

程智慧1;孟焕文1;Julie D. Scholes2;Stephen A. Rolfe2
  

  1. (1 西北农林科技大学园艺学院, 杨凌712100;2 英国谢菲尔德大学动植物系, 谢菲尔德S10 2TN)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-06-25 发布日期:2002-06-25

Impact of Water Stress on Invertase Expression and Carbohydrate Metabolism in Leaves of Tomato Seedling

Cheng Zhihui1;Meng Huanwen1;Julie D. Scholes2;and Stephen A. Rolfe2
  

  1. (1 College of Horticulture, Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, China; 2 Department of Animal and Plant Sciences, The University of Sheffield, Sheffield S10 2 TN, UK)
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-06-25 Published:2002-06-25

摘要: 以栽培番茄品种‘Ailsa Craig’的6 叶期幼苗为试材, 在水培条件下研究了5 %、7. 5 %和10 %聚乙二醇(PEG) 水分胁迫对叶片转化酶种类和活性表达及葡萄糖、果糖、蔗糖和淀粉代谢的影响。结果表明, 随着水分胁迫强度的加大, 可溶性酸性转化酶和胞壁转化酶活性增强, 己糖和蔗糖水平提高, 持续的强水分胁迫(10 % PEG) 使转化酶和可溶性糖水平显著增加, 而淀粉含量降低。

关键词: 番茄, 幼苗, 水分胁迫, 转化酶, 糖代谢

Abstract: Changes in invertase expression and carbohydrate metabolism of tomato ( cv. Ailsa Craig) seedling were studied under hydroponic culture with different level of water stress by 5 % , 7. 5 % and 10 % PEG treatment, respectively. The results showed that both soluble acid and apoplastic invertases , and glucose, fructose and sucrose were increased with the increase of water stress. Longer and strong water stress (10 % PEG)
increased invertase activity and soluble sugar content remarkably but decreased starch level .

Key words: Tomato, Seedling, Water stress, Invertase, Carbohydrate metabolism

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