Interactions of microplastics and cadmium on plant growth and arbuscular mycorrhizal fungal communities in an agricultural soil.
Identifieur interne : 000114 ( Main/Corpus ); précédent : 000113; suivant : 000115Interactions of microplastics and cadmium on plant growth and arbuscular mycorrhizal fungal communities in an agricultural soil.
Auteurs : Fayuan Wang ; Xiaoqing Zhang ; Shuqi Zhang ; Shuwu Zhang ; Yuhuan SunSource :
- Chemosphere [ 1879-1298 ] ; 2020.
English descriptors
- KwdEn :
- Agriculture (MeSH), Biomass (MeSH), Cadmium (analysis), Microplastics (analysis), Mycobiome (MeSH), Mycorrhizae (growth & development), Mycorrhizae (physiology), Plant Development (MeSH), Plant Roots (growth & development), Plastics (MeSH), Soil (chemistry), Soil Microbiology (MeSH), Soil Pollutants (analysis), Symbiosis (MeSH), Zea mays (growth & development).
- MESH :
- chemical , analysis : Cadmium, Microplastics, Soil Pollutants.
- chemical , chemistry : Soil.
- growth & development : Mycorrhizae, Plant Roots, Zea mays.
- physiology : Mycorrhizae.
- Agriculture, Biomass, Mycobiome, Plant Development, Plastics, Soil Microbiology, Symbiosis.
Abstract
Microplastics (MPs) as emerging contaminants have attracted attention worldwide, but little is known on their interactions with metallic contaminants in soil-plant systems. Here, we investigated the interactions between MPs, i.e., polyethylene (PE) and polylactic acid (PLA), and cadmium (Cd) on plant performance and arbuscular mycorrhizal fungal community in an agricultural soil. PE showed no noticeable phytotoxicity, while 10% PLA decreased maize biomass and chlorophyll content in leaves. A significant interaction on root biomass occurred between PE and Cd, but not between PLA and Cd. Both PE and PLA caused increase in soil pH and DTPA-extractable Cd concentrations, but no alterations in Cd accumulation in plant tissues. Different numbers of endemic and total OTUs were observed in various treatments. The relative abundance of arbuscular mycorrhizal fungi (AMF) genera highly varied with MPs and Cd. MPs altered AMF community structure and diversity, depending on their type and dose. Coexisting Cd produced slight but significant interactions with MPs on the dominant AMF genera. Overall, plant growth and AMF community varied with MPs type and dose, Cd, and their interactions, and the high dose of PLA produced stronger phytotoxicity. In conclusion, coexisting MPs and Cd can jointly drive shifts in plant performance and root symbiosis, thereby posing additional risks for agroecosystems and soil biodiversity.
DOI: 10.1016/j.chemosphere.2020.126791
PubMed: 32320834
Links to Exploration step
pubmed:32320834Le document en format XML
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<series><title level="j">Chemosphere</title>
<idno type="eISSN">1879-1298</idno>
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<term>Mycobiome (MeSH)</term>
<term>Mycorrhizae (growth & development)</term>
<term>Mycorrhizae (physiology)</term>
<term>Plant Development (MeSH)</term>
<term>Plant Roots (growth & development)</term>
<term>Plastics (MeSH)</term>
<term>Soil (chemistry)</term>
<term>Soil Microbiology (MeSH)</term>
<term>Soil Pollutants (analysis)</term>
<term>Symbiosis (MeSH)</term>
<term>Zea mays (growth & development)</term>
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<front><div type="abstract" xml:lang="en">Microplastics (MPs) as emerging contaminants have attracted attention worldwide, but little is known on their interactions with metallic contaminants in soil-plant systems. Here, we investigated the interactions between MPs, i.e., polyethylene (PE) and polylactic acid (PLA), and cadmium (Cd) on plant performance and arbuscular mycorrhizal fungal community in an agricultural soil. PE showed no noticeable phytotoxicity, while 10% PLA decreased maize biomass and chlorophyll content in leaves. A significant interaction on root biomass occurred between PE and Cd, but not between PLA and Cd. Both PE and PLA caused increase in soil pH and DTPA-extractable Cd concentrations, but no alterations in Cd accumulation in plant tissues. Different numbers of endemic and total OTUs were observed in various treatments. The relative abundance of arbuscular mycorrhizal fungi (AMF) genera highly varied with MPs and Cd. MPs altered AMF community structure and diversity, depending on their type and dose. Coexisting Cd produced slight but significant interactions with MPs on the dominant AMF genera. Overall, plant growth and AMF community varied with MPs type and dose, Cd, and their interactions, and the high dose of PLA produced stronger phytotoxicity. In conclusion, coexisting MPs and Cd can jointly drive shifts in plant performance and root symbiosis, thereby posing additional risks for agroecosystems and soil biodiversity.</div>
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<Abstract><AbstractText>Microplastics (MPs) as emerging contaminants have attracted attention worldwide, but little is known on their interactions with metallic contaminants in soil-plant systems. Here, we investigated the interactions between MPs, i.e., polyethylene (PE) and polylactic acid (PLA), and cadmium (Cd) on plant performance and arbuscular mycorrhizal fungal community in an agricultural soil. PE showed no noticeable phytotoxicity, while 10% PLA decreased maize biomass and chlorophyll content in leaves. A significant interaction on root biomass occurred between PE and Cd, but not between PLA and Cd. Both PE and PLA caused increase in soil pH and DTPA-extractable Cd concentrations, but no alterations in Cd accumulation in plant tissues. Different numbers of endemic and total OTUs were observed in various treatments. The relative abundance of arbuscular mycorrhizal fungi (AMF) genera highly varied with MPs and Cd. MPs altered AMF community structure and diversity, depending on their type and dose. Coexisting Cd produced slight but significant interactions with MPs on the dominant AMF genera. Overall, plant growth and AMF community varied with MPs type and dose, Cd, and their interactions, and the high dose of PLA produced stronger phytotoxicity. In conclusion, coexisting MPs and Cd can jointly drive shifts in plant performance and root symbiosis, thereby posing additional risks for agroecosystems and soil biodiversity.</AbstractText>
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<Keyword MajorTopicYN="N">Microplastics</Keyword>
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<CoiStatement>Declaration of competing interest The authors declare that they have no conflict of interest.</CoiStatement>
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