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The Interaction of Arbuscular Mycorrhizal Fungi and Phosphorus Inputs on Selenium Uptake by Alfalfa (Medicago sativaL.) and Selenium Fraction Transformation in Soil

文献类型：期刊论文

作者Peng, Qi1,2,3; Wu, Miaomiao2,4; Zhang, Zekun2,4; Su, Rui2,4; He, Honghua2,3,4; Zhang, Xingchang2,3,4
刊名FRONTIERS IN PLANT SCIENCE
出版日期2020-06-26
卷号11页码:13
ISSN号1664-462X
关键词alkaline phosphatase activity Glomus mosseae legume phosphorus rhizosphere carboxylates selenium fraction
DOI10.3389/fpls.2020.00966
通讯作者He, Honghua(honghuahe@ms.iswc.ac.cn) ; Zhang, Xingchang(zhangxc@ms.iswc.ac.cn)
英文摘要Selenium (Se) is a beneficial element to plants and an essential element to humans. Colonization by arbuscular mycorrhizal fungi (AMF) and supply of phosphorus (P) fertilizer may affect the bioavailability of Se in soils and the absorption of Se by plants. To investigate the interaction between AMF and P fertilizer on the transformation of soil Se fractions and the availability of Se in the rhizosphere of alfalfa, we conducted a pot experiment to grow alfalfa in a loessial soil with three P levels (0, 5, and 20 mg kg(-1)) and two mycorrhizal inoculation treatments (without mycorrhizal inoculation [-AMF] and with mycorrhizal inoculation [+AMF]), and the interaction between the two factors was estimated with two-way ANOVA. The soil in all pots was supplied with Se (Na2SeO3) at 1 mg kg(-1). In our results, shoot Se concentration decreased, but plant Se content increased significantly as P level increased and had a significant positive correlation with AMF colonization rate. The amount of total carboxylates in the rhizosphere was strongly affected by AMF. The amounts of rhizosphere carboxylates and alkaline phosphatase activity in the +AMF and 0P treatments were significantly higher than those in other treatments. The concentration of exchangeable-Se in rhizosphere soil had a positive correlation with carboxylates. We speculated that rhizosphere carboxylates promoted the transformation of stable Se (iron oxide-bound Se) into available Se forms, i.e. exchangeable Se and soluble Se. Colonization by AMF and low P availability stimulated alfalfa roots to release more carboxylates and alkaline phosphatase. AMF and P fertilizer affected the transformation of soil Se fractions in the rhizosphere of alfalfa.
WOS关键词COAL FLY-ASH ; ZEA-MAYS-L. ; ORGANIC-ACIDS ; PLANT-GROWTH ; EXTRACTION METHOD ; SOUTH-DAKOTA ; ACCUMULATION ; PHOSPHATE ; BIOAVAILABILITY ; RHIZOSPHERE
资助项目National Key Research and Development Plan of China[2017YFC0504504] ; National Natural Science Foundation of China[41301570] ; Light of West China Program of Chinese Academy of Sciences ; Fundamental Research Funds for Central Universities in China
WOS研究方向Plant Sciences
语种英语
出版者FRONTIERS MEDIA SA
WOS记录号WOS:000551810300001
资助机构National Key Research and Development Plan of China ; National Natural Science Foundation of China ; Light of West China Program of Chinese Academy of Sciences ; Fundamental Research Funds for Central Universities in China
源URL[http://ir.igsnrr.ac.cn/handle/311030/158326]  
专题中国科学院地理科学与资源研究所
通讯作者He, Honghua; Zhang, Xingchang
作者单位1.Univ Chinese Acad Sci, Beijing, Peoples R China
2.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China
3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China
4.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Peng, Qi,Wu, Miaomiao,Zhang, Zekun,et al. The Interaction of Arbuscular Mycorrhizal Fungi and Phosphorus Inputs on Selenium Uptake by Alfalfa (Medicago sativaL.) and Selenium Fraction Transformation in Soil[J]. FRONTIERS IN PLANT SCIENCE,2020,11:13.
APA Peng, Qi,Wu, Miaomiao,Zhang, Zekun,Su, Rui,He, Honghua,&Zhang, Xingchang.(2020).The Interaction of Arbuscular Mycorrhizal Fungi and Phosphorus Inputs on Selenium Uptake by Alfalfa (Medicago sativaL.) and Selenium Fraction Transformation in Soil.FRONTIERS IN PLANT SCIENCE,11,13.
MLA Peng, Qi,et al."The Interaction of Arbuscular Mycorrhizal Fungi and Phosphorus Inputs on Selenium Uptake by Alfalfa (Medicago sativaL.) and Selenium Fraction Transformation in Soil".FRONTIERS IN PLANT SCIENCE 11(2020):13.

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来源：地理科学与资源研究所

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