| 钼对小白菜抗坏血酸氧化还原的影响 |
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| 引用本文： | 聂兆君,胡承孝,孙学成,谭启玲,刘红恩.钼对小白菜抗坏血酸氧化还原的影响[J].植物营养与肥料学报,2008,14(5):976-981. |
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| 作者姓名： | 聂兆君 胡承孝 孙学成 谭启玲 刘红恩 |
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| 作者单位： | 1.华中农业大学微量元素研究中心,湖北武汉430070 |
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| 基金项目： | 教育部跨世纪优秀人才培养计划，高等学校博士学科点专项科研项目 |
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| 摘 要： | 采用盆栽试验研究了钼对小白菜抗坏血酸含量、氧化还原状态及相关酶活性的影响。结果表明，各施钼水平均提高了小白菜产量、抗坏血酸总量以及还原型抗坏血酸（ASC）含量。随着施钼水平的提高，抗坏血酸过氧化物酶（APX）、单脱氢抗坏血酸还原酶（MDHAR）、脱氢抗坏血酸还原酶（DHAR）活性均呈上升的趋势；抗坏血酸氧化酶（AAO）活性逐渐下降。表明施用钼肥能够促进小白菜抗坏血酸氧化还原及再生循环过程，从而提高了抗坏血酸的含量。
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| 关 键 词： | 钼 小白菜 抗坏血酸 氧化还原 |
| 收稿时间： | 2007-11-5 |
Effects of molybdenum application on redox of ascorbic acid in Chinese cabbage (Brassica campestris L. ssp. pekinensis) |
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| NIE Zhao-jun,HU Cheng-xiao,SUN Xue-cheng,TAN Qi-ling,LIU Hong-en.Effects of molybdenum application on redox of ascorbic acid in Chinese cabbage (Brassica campestris L. ssp. pekinensis)[J].Plant Nutrition and Fertilizer Science,2008,14(5):976-981. |
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| Authors: | NIE Zhao-jun HU Cheng-xiao SUN Xue-cheng TAN Qi-ling LIU Hong-en |
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| Institution: | 1.Microelement Research center,Huazhong Agricultural University,Wuhan,Hubei 430070,China |
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| Abstract: | A pot trial was conducted to investigate the effects of molybdenum (Mo) on redox of ascorbic acid in Chinese cabbage (Brassica campestris L. ssp. pekinensis). Mo was applied at four rates: 0, 0.075, 0.15 and 0.30 mg/kg soil. The fresh weight, concentrations of total ascorbate, reduced ascorbate, dehydroascorbate, and activities of four key enzymes in redox of ascorbic acid were studied. The results showed that Mo applications (0–0.30 mg/kg) increased the fresh weight, concentrations of total ascorbate and reduced ascorbate in Chinese cabbage. The activities of ascorbate peroxidase (APX), monodehydroascorbate reductase (MDHAR) and dehydroascorbate reductase (DHAR) increased due to Mo application. But the activity of ascorbate oxidase (AAO) decreased with increasing Mo application rates. It is hypothesized that Mo may promote the redox process and regeneration of ascorbic acid. It is concluded that Mo applications increased ascorbic acid concentration in Chinese cabbage. |
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| Keywords: | molybdenum Chinese cabbage ascorbic acid redox |
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