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

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep20469· OSTI ID:1256066
 [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

© 2016, Nature Publishing Group. All rights reserved. Understanding the roles of arbuscular mycorrhizal fungi (AMF) in plant interaction is essential for optimizing plant distribution to restore degraded ecosystems. This 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.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1256066
Alternate ID(s):
OSTI ID: 1379076
Journal Information:
Scientific Reports, Vol. 6; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 118 works
Citation information provided by
Web of Science

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Cited By (15)

Microbial-Enhanced Phytoremediation of Lead Contaminated Calcareous Soil by Centaurea cyanus L journal January 2018
Fungal Phytoremediation of Heavy Metal-Contaminated Resources: Current Scenario and Future Prospects book October 2019
Effects of Arbuscular Mycorrhizal Fungi Glomus mosseae on the Growth and Medicinal Components of Dysosma versipellis Under Copper Stress journal January 2020
Attenuation of Manganese-Induced Toxicity in Leucaena leucocephala Colonized by Arbuscular Mycorrhizae journal January 2020
Effects of Cd- and Pb-resistant endophytic fungi on growth and phytoextraction of Brassica napus in metal-contaminated soils journal October 2016
The impact of nanoparticles zero-valent iron (nZVI) and rhizosphere microorganisms on the phytoremediation ability of white willow and its response journal February 2019
Arbuscular Mycorrhizal Association Contributes to Cr Accumulation and Tolerance in Plants Growing on Cr Contaminated Soils journal September 2017
Streptomyces pactum assisted phytoremediation in Zn/Pb smelter contaminated soil of Feng County and its impact on enzymatic activities journal April 2017
Enhanced Ni phytoextraction by effectiveness of chemical and biological amendments in sunflower plant grown in Ni-polluted soils journal July 2019
Woody leguminous trees: New uses for sustainable development of drylands journal September 2017
Arbuscular mycorrhizal fungi communities improve the phytochemical quality of strawberry journal April 2019
Pilot testing of a bioremediation system for water and soils contaminated with heavy metals: vegetable depuration module journal March 2019
Woody leguminous trees: New uses for sustainable development of drylands text January 2017
Symbiosis Specificity of the Preceding Host Plant Can Dominate but Not Obliterate the Association Between Wheat and Its Arbuscular Mycorrhizal Fungal Partners journal November 2018
Beneficial Root Endophytic Fungi Increase Growth and Quality Parameters of Sweet Basil in Heavy Metal Contaminated Soil journal November 2018