岩溶与非岩溶区稻田土壤CO2固定细菌的丰度比较

王 腾; 靳振江; 郭家怡; 张双双; 程亚平; 张 琴; 李金城

doi:10.11932/karst2017y58

岩溶与非岩溶区稻田土壤CO2固定细菌的丰度比较

doi: 10.11932/karst2017y58

1.
桂林理工大学环境科学与工程学院/桂林理工大学岩溶地区水污染控制与用水安全保障协同创新中心
2.
桂林理工大学环境科学与工程学院/桂林理工大学岩溶地区水污染控制与用水安全保障协同创新中心/桂林理工大学广西矿冶与环境科学实验中心/桂林理工大学广西环境污染控制理论与技术重点实验室

基金项目: 国家自然科学基金项目(41361054,41003038)；广西自然科学基金项目(2011GXNSFD018002,2011GXNSFA018006，2010GXNSFB013004; 桂科合14123001-13)；岩溶动力学重点实验室开放基金项目(KDL2010-02,KDL2011-10)；广西矿冶与环境科学实验中心项目资助(KH2012ZD004)；广西高等学校立项科研项目(201204LX162,201106LX229)；广西高等学校高水平创新团队及卓越学者计划项目(002401013001)；桂林理工大学博士启动基金(2004041)

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出版历程
- 发布日期: 2018-02-25

Comparison of abundance of CO2 fixing microbes in paddy soil from karst and non-karst area

1.
College of Environmental Science and Engineering,Guilin University of Technology/The Cooperative Innovation Center of Water Pollution Control and Water Safety Guarantee in Karst Area(incubation),Guilin University of Technology
2.
College of Environmental Science and Engineering,Guilin University of Technology/The Cooperative Innovation Center of Water Pollution Control and Water Safety Guarantee in Karst Area(incubation),Guilin University of Technology/Guangxi Mining,Metallurgy and Environmental Science Experimental Center,Guilin University of Technology/Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology,Guilin University of Technology

摘要

摘要: 以桂林毛村岩溶试验场稻田土壤为研究对象，以cbbLR1、cbbLG1和cbbM为CO2固定细菌的指示基因，采用荧光定量PCR技术，对比三者在岩溶区、混合区与非岩溶区中的丰度。结果表明，cbbLG1基因在岩溶区的丰度显著高于混合区和非岩溶区，最大值为1.42×109拷贝·g-1；cbbLR1和cbbM基因在混合区的丰度显著高于岩溶区和非岩溶区，最大值为2.06×109拷贝·g-1和3.35×107。相关性分析表明，cbbLG1的丰度与土壤中有机碳质量分数、全氮质量分数及阳离子交换量显著相关；三个cbbL基因对pH的敏感度不同：pH与cbbL G1基因呈显著正相，而与cbbM基因呈显著负相关。
- 岩溶区 /
- 水稻土 /
- 土壤性质 /
- cbbL基因
Abstract: oil samples were collected from paddy field in the Maocun karst experimental site to study the gene abundance of cbbLR1, cbbLG1 and cbbM, as the index of CO2 fixing bacteria in typical karst area, mixed area and nonkarst area with the utilization of realtime quantitative PCR technology. The results showed that the gene abundances of cbbLG1 in karst area were generally higher than that in non-karst area, and the maximum value was 1.42×109copies·g-1. The gene abundances of cbbLR1 and cbbM in mixed area were significantly higher than that in non-karst area, and the maximum values were 2.06×109 copies·g-1 and 3.35×107 copies·g-1. Correlation analysis showed that the abundance of cbbLG1 was significantly correlated with organic carbon mass fraction, total nitrogen mass fraction, and cation exchange capacity in the soil, which were significant factors that affect the gene abundance of cbbLG1. The abundance of the three cbbL genes had different sensitivity to pH, which was significantly positive correlated with the cbbLG1 gene and negatively correlated with the cbbM gene.
- karst area /
- paddy soil /
- soil properties /
- cbbL gene

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