| 复合胁迫下茭白体内镉、铅的亚细胞分布和植物络合素的合成 |
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| 引用本文： | 黄凯丰,江解增.复合胁迫下茭白体内镉、铅的亚细胞分布和植物络合素的合成[J].武汉植物学研究,2011,29(4):502-506. |
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| 作者姓名： | 黄凯丰 江解增 |
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| 作者单位： | 扬州大学水生蔬菜研究室;贵州师范大学生命科学学院植物遗传育种研究所; |
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| 基金项目： | 国土资源部与江苏省政府合作项目 |
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| 摘 要： | 以茭白（Zizania latifoliaTurcz.）的单季茭品种‘蒋墅茭’和双季茭品种‘葑红早’为试材,进行Cd2＋、Pb2＋的单一及复合胁迫处理,测定了茭白根系和叶片中的非蛋白巯基（NPT）、谷胱甘肽（GSH）、植物络合素（PCs）的含量,同时测定了茭白植株各亚细胞组分中Cd2＋、Pb2＋的积累量,以探讨茭白对重金属镉、铅胁迫的耐性机理。结果表明：Cd2＋、Pb2＋的单一及其复合胁迫均能促进两茭白品种根系和叶片中NPT、GSH、PCs的含量及茭白各亚细胞组分中Cd2＋、Pb2＋积累量的显著增加;复合胁迫时两茭白品种的NPT、GSH、PCs含量及各亚细胞组分中Cd2＋、Pb2＋的积累量均高于单一胁迫,茭白的不同部位间,以根系中的NPT、GSH、PCs含量显著高于叶片;茭白各亚细胞组分中Cd2＋、Pb2＋的积累量表现为：细胞壁高于原生质体,而可溶性部分高于细胞器。
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| 关 键 词： | 茭白 胁迫 植物络合素 亚细胞组分 耐性机理 |
Sub-cellular Fraction of Heavy Metals and Production of Phytochelatins in Zizania latifolia Exposed to Cadmium and Lead |
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| HUANG Kai-Feng,JIANG Jie-Zeng.Sub-cellular Fraction of Heavy Metals and Production of Phytochelatins in Zizania latifolia Exposed to Cadmium and Lead[J].Journal of Wuhan Botanical Research,2011,29(4):502-506. |
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| Authors: | HUANG Kai-Feng JIANG Jie-Zeng |
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| Institution: | HUANG Kai-Feng1,2,JIANG Jie-Zeng1(1.Institute of Aquatic Vegetable Research,Yangzhou University,Yangzhou,Jiangsu 225009,China,2.Institute of Plant Genetics and Breeding,School of Life Sciences,Guizhou Normal University,Guiyang 550001,China) |
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| Abstract: | A single-harvested cultivar,'Jiangshujiao',and a double-harvested cultivar,'Fenghongzao',of Zizania latifolia were used as experimental materials to determine the content of non-protein-thiols(NPT),glutathione(GSH),and phytochelatins(PCs).To clarify the tolerance mechanism of Zizania latifolia to Cd2+ and Pb2+ stress,accumulation of Cd2+ and Pb2+ in subcellular fractions were also investigated.The results showed that content of NPT,GSH,and PCs and the accumulation of Cd2+ and Pb2+ in subcellular fractions i... |
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| Keywords: | Zizania latifolia Stress Phytochelatins Sub-cellular fraction Tolerance mechanism |
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