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Tytuł:
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Arbuscular mycorrhizal fungi alter microbiome structure of rhizosphere soil to enhance maize tolerance to La.
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Autorzy:
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Hao L; Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, Ministry of Education Key Laboratory of Ecology and Resource use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China.
Zhang Z; Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, Ministry of Education Key Laboratory of Ecology and Resource use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China.
Hao B; Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, Ministry of Education Key Laboratory of Ecology and Resource use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China.
Diao F; Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, Ministry of Education Key Laboratory of Ecology and Resource use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China.
Zhang J; Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, Ministry of Education Key Laboratory of Ecology and Resource use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China.
Bao Z; Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, Ministry of Education Key Laboratory of Ecology and Resource use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China.
Guo W; Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, Ministry of Education Key Laboratory of Ecology and Resource use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China. Electronic address: .
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Źródło:
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Ecotoxicology and environmental safety [Ecotoxicol Environ Saf] 2021 Apr 01; Vol. 212, pp. 111996. Date of Electronic Publication: 2021 Feb 03.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Original Publication: Amsterdam, Netherlands : Elsevier
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MeSH Terms:
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Rhizosphere*
Soil Microbiology*
Fungi/*growth & development
Lanthanum/*toxicity
Mycorrhizae/*physiology
Soil Pollutants/*toxicity
Zea mays/*drug effects
Bacteria/growth & development ; Biodegradation, Environmental ; Biomass ; Glomeromycota/growth & development ; Lanthanum/analysis ; Microbiota ; Plant Roots/chemistry ; Plant Roots/microbiology ; Soil/chemistry ; Soil Pollutants/analysis ; Zea mays/growth & development ; Zea mays/microbiology
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Contributed Indexing:
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Keywords: Arbuscular mycorrhizal fungi (AMF); Lanthanum (La); Rhizosphere bacterial community; Rhizosphere fungal community
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Substance Nomenclature:
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0 (Soil)
0 (Soil Pollutants)
6I3K30563S (Lanthanum)
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SCR Organism:
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Claroideoglomus etunicatum
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Entry Date(s):
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Date Created: 20210205 Date Completed: 20210305 Latest Revision: 20210305
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Update Code:
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20240104
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DOI:
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10.1016/j.ecoenv.2021.111996
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PMID:
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33545409
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Rhizosphere microbes are essential partners for plant stress tolerance. Recent studies indicate that arbuscular mycorrhizal fungi (AMF) can facilitate the revegetation of soils contaminated by heavy metals though interacting with rhizosphere microbiome. However, it is unclear how AMF affect rhizosphere microbiome to improve the growth of plant under rare earth elements (REEs) stress. AMF (Claroideoglomus etunicatum) was inoculated to maize grown in soils spiked with Lanthanum (0 mg kg -1 , La0; 10 mg kg -1 , La10; 100 mg kg -1 , La100; 500 mg kg -1 , La500). Plant biomass, nutrient uptake, REE uptake and rhizosphere bacterial and fungal community were evaluated. The results indicated that La100 and La500 decreased significantly root colonization rates and nutrition uptake (K, P, Ca and Mg content). La500 decreased significantly α-diversity indexes of bacterial and fungal community. AMF enhanced significantly the shoot and root fresh and dry weight of maize in all La treatments (except for the root fresh and dry weight of La0 and La10 treatment). For La100 and La500 treatments, AMF increased significantly nutrition uptake (K, P, Ca and Mg content) in shoot of maize by 27.40-441.77%. For La500 treatment, AMF decreased significantly shoot La concentration by 51.53% in maize, but increased significantly root La concentration by 30.45%. In addition, AMF decreased bacterial and fungal Shannon index in La0 treatment, but increased bacterial Shannon index in La500 treatment. Both AMF and La500 affected significantly the bacterial and fungal community composition, and AMF led to more influence than La. AMF promoted the enrichment of bacteria, including Planomicrobium, Lysobacter, Saccharothrix, Agrococcus, Microbacterium, Streptomyces, Penicillium and other unclassified genus, and fungi (Penicillium) in La500, which showed the function for promoting plant growth and tolerance of heavy metal. The study revealed that AMF can regulate the rhizosphere bacterial and fungal composition and foster certain beneficial microbes to enhance the tolerance of maize under La stress. Phytoremediation assisted by AMF is an attractive approach to ameliorate REEs-contaminated soils.
(Copyright © 2021 The Authors. Published by Elsevier Inc. All rights reserved.)
