| 丛枝菌根真菌对枳不同根围铁及球囊霉素螯合金属的影响 |
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| 引用本文： | 王明元,夏仁学,王鹏.丛枝菌根真菌对枳不同根围铁及球囊霉素螯合金属的影响[J].福建农林大学学报(自然科学版),2010,39(1). |
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| 作者姓名： | 王明元 夏仁学 王鹏 |
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| 作者单位： | 1. 华侨大学化工学院,福建,厦门,361021
2. 华中农业大学,园艺植物生物学教育部重点实验室,湖北,武汉,430070 |
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| 基金项目： | 国家科技部促进三峡移民开发专项项目(2003EP090018、2004EP090019);;华侨大学高层次人才科研启动费资助项目(08BS410) |
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| 摘 要： | 采用盆栽根袋技术,将枳根围土壤分为0-2、2-4和4-8 cm 3个水平土层,研究丛枝菌根(AM)真菌地表球囊霉对枳根围土壤中有效Fe及球囊霉素鳌合金属含量的影响.结果表明,接种AM真菌显著降低了枳根围土壤中有效Fe的含量.接种AM真菌的土壤有效Fe含量表现为:0-2 cm2-4 cm4-8 cm,而未接种的则表现为:4-8 cm2-4 cm0-2cm;枳不同根围土壤中的菌丝密度表现为:0-2 cm2-4 cm4-8 cm,表明菌丝能够穿过尼龙网伸展到4-8 cm土层中;枳不同根围土壤中易提取球囊霉素和总球囊霉素的变化规律一致,表现为:2-4 cm4-8 cm0-2 cm;土壤中球囊霉素螯合Fe和Mn的含量在4-8 cm土层中最少,螯合Zn和Cu的含量则在0-2 cm土层中最少.可见,球囊霉素能够螯合Cu等元素,减轻土壤中重金属元素对AM真菌的威胁,进而起到缓冲金属元素释放和保护真菌的作用.
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| 关 键 词： | 丛枝菌根真菌 枳 有效Fe 球囊霉素 鳌合金属 |
Effects of arbuscular mycorrhizal fungi on available iron and metals sequestered by glomalin in different rhizospheric soil of Poncirus trifoliata |
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| WANG Ming-yuan,XIA Ren-xue,WANG Peng.Effects of arbuscular mycorrhizal fungi on available iron and metals sequestered by glomalin in different rhizospheric soil of Poncirus trifoliata[J].Journal of Fujian Agricultural and Forestry University,2010,39(1). |
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| Authors: | WANG Ming-yuan XIA Ren-xue WANG Peng |
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| Institution: | 1.College of Chemical Engineering;Huaqiao University;Xiamen;Fujian 361021;China;2.Key Laboratory of Horticultural Plant Biology;Ministry of Education;Huazhong Agricultural University;Wuhan;Hubei 430070;China |
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| Abstract: | Effects of available iron and metals sequestered by glomalin were studied on trifoliate orange(Poncirus trifoliata L.Raf) inoculated with arbuscular mycorrhizal(AM) fungus(Glomus versiforme).The experiment was carried out with pot culture by root confinement technique which divided the soil into 0-2,2-4 and 4-8 cm in horizon.The results showed that AM fungus decreased the contents of available iron significantly,and the available iron contents of inoculated treatments were in the order 0-2 cm>2-4 cm>4-8 cm,... |
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| Keywords: | arbuscular mycorrhizal fungi Poncirus trifoliata available iron glomalin metals bound to glomalin |
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