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水分胁迫对小麦幼苗叶片多胺含量的影响
引用本文:牛明功,陈龙,王贤,杨光宇,刘怀攀.水分胁迫对小麦幼苗叶片多胺含量的影响[J].热带亚热带植物学报,2004,12(6):501-505.
作者姓名:牛明功  陈龙  王贤  杨光宇  刘怀攀
作者单位:1. 周口师范学院生命科学系植物学重点实验室,河南,周口,466000
2. 周口市农业科学研究所,河南,周口,466001
基金项目:国家农业科技成果转化资金专项(02EFN214100393),河南省教育厅科研基金(2001180024)资助
摘    要:水分胁迫下小麦幼苗叶片多胺含量变化的研究表明,聚乙二醇(PEG)的渗透胁迫明显提高了抗旱性强的周麦系列幼苗叶片游离态Put、Spd和Spm的含量和抗旱性弱的温麦6号的Put含量。外源Spd显著提高了水分胁迫下温麦6号的Spd的含量,对其抗性也有所改善。外源MGBG(Spd和Spm生物合成抑制剂)可提高水分胁迫下周麦12号Put的含量,但降低了Spd和Spm的含量和幼苗的抗性。

关 键 词:小麦  水分胁迫  多胺
文章编号:1005-3395(2004)06-0501-05
修稿时间:2003年9月24日

Effect of Water Stress on Polyamine Contents in Leaves of Wheat Seedlings
NIU Ming-gong,CHEN Long,WANG Xian,YANG Guang-yu,LIU Huai-pan.Effect of Water Stress on Polyamine Contents in Leaves of Wheat Seedlings[J].Journal of Tropical and Subtropical Botany,2004,12(6):501-505.
Authors:NIU Ming-gong  CHEN Long  WANG Xian  YANG Guang-yu  LIU Huai-pan
Abstract:Polyethylene glycol (PEG) induced osmotic stress increased the contents of putrescine (Put), spermidine (Spd) and spermine (Spm) in seedlings of drought-resistant wheat strains Zhou and the content of Put in seedlings of drought-sensitive wheat Wen 6. Exogenous Spd (1 mmol/L) obviously increased the content of Spd in seedlings of Wen 6 and its resistance to water stress increased to some extent. Methylglyoxyl-bis (guanylhydrazone) (MGBG,1 mmol/L), an inhibitor of biosynthesis of Spd and Spm, increased the content of Put in wheat seedlings of Zhou 12 under water stress, but decreased the contents of Spd and Spm as well as its drought resistance.
Keywords:Wheat  Water Stress  Polyamine
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