| Cr6+和Pb2+重金属胁迫对大蒜发芽的影响 |
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| 引用本文： | 柯佳颖,吴文杰,陈细香.Cr6+和Pb2+重金属胁迫对大蒜发芽的影响[J].安徽农业科学,2011,39(13):7627-7629. |
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| 作者姓名： | 柯佳颖 吴文杰 陈细香 |
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| 作者单位： | 泉州师范学院化学与生命科学学院,福建泉州,362000;泉州师范学院化学与生命科学学院,福建泉州,362000;泉州师范学院化学与生命科学学院,福建泉州,362000 |
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| 基金项目： | 福建省高校服务海西建设重点项目(A101); 硕士学位授予单位立项建设学科(生物学); 福建省教育厅A类科技项目(JA09213); 泉州市科技计划项目(2010N28) |
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| 摘 要： | 目的]研究Cr6＋和Pb2＋胁迫对大蒜发芽的影响。方法]测定了在Cr6＋和Pb2＋2种重金属胁迫下大蒜发芽过程中的根长、酶（SOD和CAT）活性及可溶性蛋白质含量。结果]大蒜萌发过程中,Cr6＋和Pb2＋重金属浓度超过20 mg/L时对芽苗根长有明显的抑制作用;SOD和CAT对低浓度的重金属毒性具有一定的缓冲能力,在低浓度Cr6＋胁迫下SOD活性随着金属离子浓度的增加而增大,且当处理浓度为50 mg/L时达到最大,而CAT活性在Cr6＋浓度低于20 mg/L时逐渐增大;SOD和CAT活性在高浓度Cr6＋（大于50 mg/L）或在Pb2＋胁迫下随重金属离子浓度的增加而持续降低;在重金属（Cr2＋、Pb2＋）溶液各个浓度作用下随着时间延长可溶性蛋白质含量均表现出下降趋势,且随着浓度的提升下降趋势明显。另外,大蒜对Cr6＋毒性的耐受性远高于对Pb2＋。结论]为深入探讨重金属对植物的毒害机制提供了理论依据。
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| 关 键 词： | 大蒜 SOD CAT 可溶性蛋白质 |
Effects of Two Kinds of Heavy Metals Including Cr~(6+) and Pb~(2+) on Garlic Germination |
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| KE Jia-ying et al.Effects of Two Kinds of Heavy Metals Including Cr~(6+) and Pb~(2+) on Garlic Germination[J].Journal of Anhui Agricultural Sciences,2011,39(13):7627-7629. |
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| Authors: | KE Jia-ying |
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| Institution: | KE Jia-ying et al(Bioengineering Department of Quanzhou Normal University,Quanzhou,Fujian 362000) |
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| Abstract: | Objective] This study aimed to revealing the effects of two kinds of heavy metals including Cr6+ and Pb2+ on garlic germination.Method] Root length,enzyme(SOD and CAT) activity and soluble protein content during garlic germination was determined under the stress of two kinds of heavy metals including Cr6+ and Pb2+.Result] During garlic germination,there was an obvious inhibition on buds and seedlings when the concentration of heavy metals including Cr6+ and Pb2+ was more than 20 mg/L,while SOD and CAT ha... |
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| Keywords: | Garlic SOD CAT Soluble protein |
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