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Title: The roles of arbuscular mycorrhizal fungi (AMF) in phytoremediation and tree-herb interactions in Pb contaminated soil

Abstract

Understanding the roles of arbuscular mycorrhizal fungi (AMF) in plant interaction is essential for optimizing plant distribution to restore degraded ecosystems. Here, our study investigated the effects of AMF and the presence of legume or grass herbs on phytoremediation with a legume tree, Robinia pseudoacacia, in Pb polluted soil. In monoculture, mycorrhizal dependency of legumes was higher than that of grass, and AMF benefited the plant biomass of legumes but had no effect on grass. Mycorrhizal colonization of plant was enhanced by legume neighbors but inhibited by grass neighbor in co-culture system. N, P, S and Mg concentrations of mycorrhizal legumes were larger than these of non-mycorrhizal legumes. Legume herbs decreased soil pH and thereby increased the Pb concentrations of plants. The neighbor effects of legumes shifted from negative to positive with increasing Pb stress levels, whereas grass provided a negative effect on the growth of legume tree. AMF enhanced the competition but equalized growth of legume-legume under unpolluted and Pb stress conditions, respectively. In conclusion, (1) AMF mediate plant interaction through directly influencing plant biomass, and/or indirectly influencing plant photosynthesis, macronutrient acquisition, (2) legume tree inoculated with AMF and co-planted with legume herbs provides an effective way for Pbmore » phytoremediation.« less

Authors:
 [1];  [2];  [3];  [2];  [4];  [5];  [5]
  1. Northwest A&F Univ. Yangling, Shaanxi (China). State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau; Northwest A&F Univ. Yangling, Shaanxi (China). College of Forestry
  2. Joint BioEnergy Inst. (JBEI), Emeryville, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Physical Biosciences Division
  3. National Univ. of Ireland, Galway (Ireland). Plant Systems Biology Lab, Botany and Plant Science, School of Natural Sciences
  4. Indian Institute of Technology Kharagpur, Kharagpur (India)
  5. Northwest A&F Univ. Yangling, Shaanxi (China). College of Forestry
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
OSTI Identifier:
1256066
Alternate Identifier(s):
OSTI ID: 1379076
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 59 BASIC BIOLOGICAL SCIENCES

Citation Formats

Yang, Yurong, Liang, Yan, Han, Xiaozhen, Chiu, Tsan-Yu, Ghosh, Amit, Chen, Hui, and Tang, Ming. The roles of arbuscular mycorrhizal fungi (AMF) in phytoremediation and tree-herb interactions in Pb contaminated soil. United States: N. p., 2016. Web. doi:10.1038/srep20469.
Yang, Yurong, Liang, Yan, Han, Xiaozhen, Chiu, Tsan-Yu, Ghosh, Amit, Chen, Hui, & Tang, Ming. The roles of arbuscular mycorrhizal fungi (AMF) in phytoremediation and tree-herb interactions in Pb contaminated soil. United States. doi:10.1038/srep20469.
Yang, Yurong, Liang, Yan, Han, Xiaozhen, Chiu, Tsan-Yu, Ghosh, Amit, Chen, Hui, and Tang, Ming. Thu . "The roles of arbuscular mycorrhizal fungi (AMF) in phytoremediation and tree-herb interactions in Pb contaminated soil". United States. doi:10.1038/srep20469. https://www.osti.gov/servlets/purl/1256066.
@article{osti_1256066,
title = {The roles of arbuscular mycorrhizal fungi (AMF) in phytoremediation and tree-herb interactions in Pb contaminated soil},
author = {Yang, Yurong and Liang, Yan and Han, Xiaozhen and Chiu, Tsan-Yu and Ghosh, Amit and Chen, Hui and Tang, Ming},
abstractNote = {Understanding the roles of arbuscular mycorrhizal fungi (AMF) in plant interaction is essential for optimizing plant distribution to restore degraded ecosystems. Here, our study investigated the effects of AMF and the presence of legume or grass herbs on phytoremediation with a legume tree, Robinia pseudoacacia, in Pb polluted soil. In monoculture, mycorrhizal dependency of legumes was higher than that of grass, and AMF benefited the plant biomass of legumes but had no effect on grass. Mycorrhizal colonization of plant was enhanced by legume neighbors but inhibited by grass neighbor in co-culture system. N, P, S and Mg concentrations of mycorrhizal legumes were larger than these of non-mycorrhizal legumes. Legume herbs decreased soil pH and thereby increased the Pb concentrations of plants. The neighbor effects of legumes shifted from negative to positive with increasing Pb stress levels, whereas grass provided a negative effect on the growth of legume tree. AMF enhanced the competition but equalized growth of legume-legume under unpolluted and Pb stress conditions, respectively. In conclusion, (1) AMF mediate plant interaction through directly influencing plant biomass, and/or indirectly influencing plant photosynthesis, macronutrient acquisition, (2) legume tree inoculated with AMF and co-planted with legume herbs provides an effective way for Pb phytoremediation.},
doi = {10.1038/srep20469},
journal = {Scientific Reports},
number = ,
volume = 6,
place = {United States},
year = {2016},
month = {2}
}

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    Works referencing / citing this record:

    Arbuscular mycorrhizal fungi communities improve the phytochemical quality of strawberry
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    • Chiomento, José Luís Trevizan; da Costa, Rosiani Castoldi; de Nardi, Fabiola Stockmans
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    Pilot testing of a bioremediation system for water and soils contaminated with heavy metals: vegetable depuration module
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    • Scotti, Adalgisa; Silvani, Vanesa Analia; Cerioni, Juan
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