| 铅胁迫下干旱对国槐和紫穗槐幼苗抗氧化酶活性的影响 |
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| 引用本文： | 李春燕,王进鑫,王敏,陈科皓,王榆鑫,宋清玉.铅胁迫下干旱对国槐和紫穗槐幼苗抗氧化酶活性的影响[J].干旱地区农业研究,2016,34(3):174-178. |
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| 作者姓名： | 李春燕 王进鑫 王敏 陈科皓 王榆鑫 宋清玉 |
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| 作者单位： | 1. 西北农林科技大学资源环境学院,农业部西北植物营养与农业环境重点实验室,陕西 杨凌 712100;贵州省安顺市关岭自治县环境保护局,贵州 关岭 561300;2. 西北农林科技大学资源环境学院,农业部西北植物营养与农业环境重点实验室,陕西 杨凌 712100 |
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| 基金项目： | 陕西省科技统筹创新工程计划项目(2016KTCL03-18)，国家自然科学基金项目(31170579) |
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| 摘 要： | 为了阐明铅胁迫下国槐和紫穗槐对干旱的生理响应机制,进而对比两者在铅胁迫下的抗旱性,为西北矿区耐铅型抗旱植物鉴选提供依据。通过盆栽试验,以1年生的国槐和紫穗槐幼苗为材料,以土壤相对含水量(SRW)100.00%的无铅处理为对照,其余处理外源铅浓度统一设为2 000 mg·kg~(-1),测定不同水分胁迫强度(土壤相对含水量87.84%,70.00%,52.16%,40.00%)国槐和紫穗槐幼苗叶片中超氧化物歧化酶(SOD)、过氧化物酶(POD)以及过氧化氢酶(CAT)活性的变化。结果表明:单一铅胁迫(2 000 mg·kg~(-1))下国槐和紫穗槐抗氧化酶活性高于对照;铅和干旱复合胁迫下,SRW 87.84%、SRW 70.00%、SRW 52.16%的处理,随着干旱胁迫强度的升高,国槐幼苗叶片SOD、POD和CAT活性均呈先升高后降低趋势且高于对照,紫穗槐SOD和POD活性呈先升高后降低趋势且高于对照,而CAT活性呈先降低后升高趋势;SRW为40%的处理下,国槐的SOD和CAT活性显著低于对照,POD活性略高于对照;紫穗槐SOD、POD和CAT活性均高于对照。铅胁迫(2 000 mg·kg~(-1))对国槐和紫穗槐的抗氧化酶有激活作用;铅胁迫下,紫穗槐对干旱的抗性强于国槐。
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| 关 键 词： | 铅胁迫 干旱胁迫 国槐 紫穗槐 抗氧化酶 |
Effect of drought on activity of antioxidant enzymes in leaves of Sophora japonica and Amorpha fruticosa seedlings under plumbum stress |
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| LI Chun-yan,WANG Jin-xin,WANG Min,CHEN Ke-hao,WANG Yu-xin,SONG Qin-yu.Effect of drought on activity of antioxidant enzymes in leaves of Sophora japonica and Amorpha fruticosa seedlings under plumbum stress[J].Agricultural Research in the Arid Areas,2016,34(3):174-178. |
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| Authors: | LI Chun-yan WANG Jin-xin WANG Min CHEN Ke-hao WANG Yu-xin SONG Qin-yu |
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| Institution: | College of Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China; Environmental Protection Agency of Guizhou Provice Anshun City Guanling County, Guanling, Guizhou 561300, China,College of Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China,College of Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China,College of Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China,College of Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China and College of Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China |
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| Abstract: | |
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| Keywords: | plumbum stress drought stress Sophora japonica Amorpha fruticosa antioxidant enzymes |
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