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[目的]本实验旨在以水稻为材料研究葡萄糖信号在锌诱导根系生长中的作用。[方法]本实验以水稻中花11号为材料,分析了在不同浓度的葡萄糖、葡萄糖+锌、甘露醇和锌+甘露醇处理条件下,水稻的根系生长、活性氧的产生和根系质子分泌的变化。[结果]结果表明,在有锌和无锌的处理条件下,除了不定根数和不定根侧根数外,株高、初生根长、初生根侧根数/长、不定根长和不定根侧根长均不同程度地受到糖浓度的影响,高浓度糖诱导活性氧产生,缺糖则导致根系的质子分泌能力降低。但是在相同浓度的糖处理条件下,锌诱导这些指标的变化与无锌处理的结果明显不同。相同浓度的葡萄糖和甘露醇对根系生长的影响有显著差异,说明这种变化是由糖信号而非渗透势引起的。[结论]这些结果表明,在正常和锌处理条件下葡萄糖对水稻根系的生长都具有重要的调节作用。
[Objective] The purpose of this experiment was to study the role of glucose signaling in zinc-induced root growth in rice. [Method] With Zhonghua 11 as material, the effects of different concentrations of glucose, glucose + zinc, mannitol and zinc + mannitol on root growth, reactive oxygen species generation and root proton secretion in rice Variety. [Result] The results showed that plant height, primary root length, primary root lateral root length / length, adventitious root length and adventitious root length were all increased to some extent under zinc and zinc-free treatment conditions except for the number of adventitious roots and number of adventitious roots Affected by the sugar concentration, high concentrations of glucose induced reactive oxygen species, lack of sugar will lead to lower proton secretion capacity of the root system. However, under the same concentration of sugar treatment, the changes of these indexes induced by zinc were obviously different from the results of no zinc treatment. The same concentration of glucose and mannitol on the root growth significantly different, indicating that this change is caused by the sugar signal rather than osmotic potential. [Conclusion] These results indicate that glucose plays an important regulatory role in rice root growth under both normal and zinc treatments.