| 铜绿假单胞菌对镉胁迫水稻苗期生长与镉积累的影响 |
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| 引用本文： | 何小三,王微,肖清铁,郑新宇,郑梅琴,朱静静,韩永明,汪敦飞,林瑞余,林文雄.铜绿假单胞菌对镉胁迫水稻苗期生长与镉积累的影响[J].中国生态农业学报,2018,26(6):884-891. |
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| 作者姓名： | 何小三 王微 肖清铁 郑新宇 郑梅琴 朱静静 韩永明 汪敦飞 林瑞余 林文雄 |
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| 作者单位： | 福建省农业生态过程与安全监控重点实验室/福建农林大学生命科学学院;作物生态与分子生理学福建省高校重点实验室/福建农林大学生命科学学院 |
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| 基金项目： | 科技基础性工作专项（2015YF111300）、福建省自然科学基金项目（2013J01083，2015J01081）及闽台作物特色种质创制与绿色栽培协同创新中心项目[闽教科（2015）75号]资助 |
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| 摘 要： | 稻米重金属污染是人们广泛关注的严重问题,微生物钝化是阻遏环境重金属进入生物循环的有效途径之一。为了解铜绿假单胞菌对苗期水稻镉污染的缓解效应,本文以无镉处理为对照,通过添加20μmol×L~(-1)镉的水培试验,研究了铜绿假单胞菌、载体A(硅藻土,粒径1~3 mm)、载体B(硅藻土,粒径3~6 mm)、载体C(活性炭,比表面积1 000 m~2×g-1)以及铜绿假单胞菌与载体制备的菌剂A、菌剂B和菌剂C对水稻生长、镉含量及镉积累量的影响。结果表明,20μmol×L~(-1)镉处理显著抑制了水稻根长、株高的生长和干物质积累,添加菌液及菌剂A、B、C后,水稻生长状况得到显著改善,总生物量比镉处理(0.523 g×株~(-1))提高38.5%~67.3%,以菌剂B处理的水稻生物量最高。水稻根、茎鞘、叶以及地上部镉含量显著降低,其中添加菌剂A、菌剂B、菌剂C及活性炭处理的水稻地上部镉含量分别比镉处理(101.3 mg×g~(-1))下降45.9%、47.9%、59.9%和59.9%,迁移系数降低16.7%、25.0%、33.3%和33.3%,富集系数减少48.1%、48.8%、58.8%和60.9%。添加活性炭、菌剂A和菌剂C处理的水稻单株镉积累量降低18.2%、9.5%和24.3%,添加菌剂B以及依次含有56.4 mL、45.3 mL、28.4 mL菌悬液的菌液A、菌液B和菌液C处理,其镉积累量依次增加15.0%、30.4%、14.9%、16.9%,说明菌株通过提高作物生物量增加了镉积累。综上,铜绿假单胞菌可显著促进镉胁迫水稻的生长,降低水稻的镉含量,抑制镉的迁移,降低水稻镉的有效性;菌剂A、B、C表现出良好的镉钝化能力,表明铜绿假单胞菌可为环境镉污染的生物修复提供新菌株。
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| 关 键 词： | 铜绿假单胞菌 水稻 镉 载体 菌剂 微生物钝化 |
| 收稿时间： | 2017/10/20 0:00:00 |
| 修稿时间： | 2018/2/20 0:00:00 |
Effects of Pseudomonas aeruginosa on the growth and cadmium accumulation in rice (Oryza sativa L.) seedling under Cd stress |
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| HE Xiaosan,WANG Wei,XIAO Qingtie,ZHENG Xinyu,ZHENG Meiqin,ZHU Jingjing,HAN Yongming,WANG Dunfei,LIN Ruiyu and LIN Wenxiong.Effects of Pseudomonas aeruginosa on the growth and cadmium accumulation in rice (Oryza sativa L.) seedling under Cd stress[J].Chinese Journal of Eco-Agriculture,2018,26(6):884-891. |
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| Authors: | HE Xiaosan WANG Wei XIAO Qingtie ZHENG Xinyu ZHENG Meiqin ZHU Jingjing HAN Yongming WANG Dunfei LIN Ruiyu and LIN Wenxiong |
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| Institution: | Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring/College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China,Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring/College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China,Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring/College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China;Key Laboratory of Crop Ecology and Molecular Physiology of Fujian Province University/College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China,Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring/College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China;Key Laboratory of Crop Ecology and Molecular Physiology of Fujian Province University/College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China,Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring/College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China;Key Laboratory of Crop Ecology and Molecular Physiology of Fujian Province University/College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China,Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring/College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China,Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring/College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China,Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring/College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China,Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring/College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China;Key Laboratory of Crop Ecology and Molecular Physiology of Fujian Province University/College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China and Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring/College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China;Key Laboratory of Crop Ecology and Molecular Physiology of Fujian Province University/College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China |
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| Abstract: | |
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| Keywords: | Pseudomonas aeruginosa Rice Cadmium Bacteria carrier Bacteria inoculum Microbial passivation |
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