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Rhizosphere processes induce changes in dissimilatory iron reduction in a tidal marsh soil: a rhizobox study

文献类型：期刊论文

作者Luo, Min; Liu, Yuxiu; Huang, Jiafang; Xiao, Leilei; Zhu, Wenfeng; Duan, Xun; Tong, Chuan
刊名PLANT AND SOIL
出版日期2018-12
卷号433期号:1-2页码:83-100
ISSN号0032-079X
关键词Rhizosphere Dissimilatory iron reduction Iron reducers Root porosity Tidal marsh
DOI10.1007/s11104-018-3827-y
产权排序[Luo, Min ; Duan, Xun] Fuzhou Univ, Sch Environm & Resource, Fuzhou 350116, Fujian, Peoples R China ; [Luo, Min] Fuzhou Univ, Key Lab Spatial Data Min Informat Sharing, Minist Educ, Fuzhou 350116, Fujian, Peoples R China ; [Liu, Yuxiu ; Huang, Jiafang ; Zhu, Wenfeng ; Tong, Chuan] Fujian Normal Univ, Sch Geog Sci, Minist Educ, Key Lab Humid Subtrop Ecogeog Proc, Shangsan St 8, Fuzhou 350007, Fujian, Peoples R China ; [Xiao, Leilei] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Biol & Biol Resources Utilizat, Yantai 264003, Peoples R China
文献子类Article
英文摘要Background and aims Although the role of microbial iron respiration in tidal marshes has been recognized for decades, the effect of rhizosphere processes on dissimilatory ferric iron reduction (FeR) is poorly known. Herein, we examined the FeR surrounding the root zone of three tidal marsh plants. Methods Using in situ rhizoboxes, we accurately separated rhizobox soil as one rhizosphere zone, and three bulk soil zones. Dissimilatory and sulfidic-mediated FeR were quantified by accumulation of non-sulfidic Fe(II) and Fe sulfides over time, respectively. Results The rates of dissimilatory FeR attained 42.5 mu mol Fe g(-1) d(-1) in the rhizosphere, and logarithmically declined by up to 19.1 mu mol Fe g(-1) d(-1) in the outer bulk soil. The rates of sulfidic-mediated FeR were less than 2 mu mol Fe g(-1) d(-1) among all zones. Poorly crystalline Fe(III), DOC and DON, porewater Fe2+, and SO42- were all enriched in the rhizosphere, whereas non-sulfidic Fe(II) and Fe sulfides gradually accumulated away from the roots. Iron reducers (Geobacter, Bacillus, Shewanella, and Clostridium) had higher populations in the rhizosphere than in the bulk soil. Higher rates of dissimilatory FeR were observed in the Phragmites australis and Spartina alterniflora rhizoboxes than in the Cyperus malaccensis rhizoboxes. Conclusions The radial change pattern of dissimilatory FeR rates were determined by allocation of poorly crystalline Fe(III) and dissolved organic carbon. The interspecies difference of rhizosphere dissimilatory FeR was associated with the root porosity and aerenchyma of the tidal marsh plants.
WOS关键词ORGANIC-MATTER MINERALIZATION ; ROOT-DERIVED CARBON ; RICE ORYZA-SATIVA ; SALT-MARSH ; WETLAND PLANTS ; PHRAGMITES-AUSTRALIS ; OXIDIZING BACTERIA ; AQUIFER SEDIMENTS ; SULFATE-REDUCTION ; FE(III) REDUCTION
WOS研究方向Agronomy ; Plant Sciences ; Soil Science
语种英语
WOS记录号WOS:000449754900007
资助机构National Science Foundation of China [41501252] ; Science Foundation of Fujian Province [2016 J05097] ; Key Laboratory of wet Subtropical Ecology and geography process of Ministry of Education [2017KFJJ02] ; Key Laboratory of Coastal Environmental Processes and Ecological Remediation, YICCAS [2018KFJJ10] ; Open Test Fund for valuable instruments and equipment from Fuzhou University [2018 T013]
源URL[http://ir.yic.ac.cn/handle/133337/24586]  
专题烟台海岸带研究所_海岸带生物学与生物资源利用所重点实验室
作者单位1.Fuzhou Univ, Sch Environm & Resource, Fuzhou 350116, Fujian, Peoples R China;
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Biol & Biol Resources Utilizat, Yantai 264003, Peoples R China
3.Fujian Normal Univ, Sch Geog Sci, Minist Educ, Key Lab Humid Subtrop Ecogeog Proc, Shangsan St 8, Fuzhou 350007, Fujian, Peoples R China;
4.Fuzhou Univ, Key Lab Spatial Data Min Informat Sharing, Minist Educ, Fuzhou 350116, Fujian, Peoples R China;
推荐引用方式
GB/T 7714		 Luo, Min,Liu, Yuxiu,Huang, Jiafang,et al. Rhizosphere processes induce changes in dissimilatory iron reduction in a tidal marsh soil: a rhizobox study[J]. PLANT AND SOIL,2018,433(1-2):83-100.
APA Luo, Min.,Liu, Yuxiu.,Huang, Jiafang.,Xiao, Leilei.,Zhu, Wenfeng.,...&Tong, Chuan.(2018).Rhizosphere processes induce changes in dissimilatory iron reduction in a tidal marsh soil: a rhizobox study.PLANT AND SOIL,433(1-2),83-100.
MLA Luo, Min,et al."Rhizosphere processes induce changes in dissimilatory iron reduction in a tidal marsh soil: a rhizobox study".PLANT AND SOIL 433.1-2(2018):83-100.

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来源：烟台海岸带研究所

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