AI Article Synopsis

  • Soil contamination by trace metals is a major global problem, leading to research on plant species that can hyperaccumulate these metals to improve soil health.
  • This study focused on the effects of soil origin, plant population, and microbial communities on the ability of four populations of the hyperaccumulator plant A. halleri to extract cadmium (Cd) and zinc (Zn) from soil.
  • Results showed that while plant population's effect on microbial communities was limited, both non-metallicolous and metallicolous populations thrived in contaminated soils, with the non-metallicolous population outperforming others in Zn accumulation, highlighting a significant interaction between soil properties and plant capabilities.

Article Abstract

Soil contamination with trace metal elements is a worldwide issue, prompting research on plant species capable of hyperaccumulating metals to reduce soil toxicity. Previous research suggests that both plant species and their populations can affect soil microbial communities, yet little is known about how different populations of hyperaccumulator species influence these microbial communities to enhance metal-uptake and tolerance. This study evaluated the effect of soil origin, soil microbiome, and plant population on phytoextraction efficiencies of Cd and Zn among four A. halleri populations: two each from metalliferous and non-metalliferous sites. In a controlled transplant experiment, clonal replicates of A. halleri were grown in native and three non-native soils for six months. Biogeochemical analyses of plants and soils were conducted, alongside sequencing of root-associated soil bacterial/archaeal and fungal DNA. Soil treatments primarily differed in pH, total Cd, Pb, and Zn, as well as acid and alkaline phosphatase enzyme activities. A combined effect of soil origin and population was noted for arylsulfatase and β-glucosidase activities, as well as ammonium and nitrate concentrations. Both non-metallicolous and metallicolous populations accumulated high levels of Cd and Zn in metalliferous soils with the non-metallicolous population NM_PL14 outperforming the metallicolous populations in Zn hyperaccumulation. Interestingly, non-metallicolous populations grown in metalliferous soils exhibited no trade-offs in plant performance despite higher Cd and Zn accumulation. Soil origin had a stronger effect on the bacterial/archaeal and fungal community composition than plant ecotype. Partial least square regression models explained 66 % and 79 % of the variability in A. halleri Cd and Zn hyperaccumulation. There was a positive association between Zn-uptake and specific microbial taxa (e.g., Cornebacteriales, Microbacteriaceae, Propionibacteriales, Rhizobiaceae, Basidiomycota, Oidiodendron, Phallaceae) and functional activity (e.g., arylsulfatase, S oxidation) in metalliferous soils. Taken together, our findings suggest that non-metallicolous A. halleri populations may be better suited for Zn phytoextraction applications.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.scitotenv.2024.177470DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11661931PMC

Publication Analysis

Top Keywords

metalliferous soils
16
soil origin
12
soil
10
soil microbiome
8
transplant experiment
8
plant species
8
microbial communities
8
halleri populations
8
bacterial/archaeal fungal
8
metallicolous populations
8

Similar Publications

Pre-roman copper industry had no polluting impact on the global environment.

Sci Rep

November 2024

Department of Archaeology and Ancient Near Eastern Cultures, Tel Aviv University, Tel Aviv, Israel.

Article Synopsis
  • * Using advanced geochemical methods, the research shows that soil metal concentrations can effectively identify various archaeological site activities, revealing significant changes in metallurgical operations from the Early Bronze Age to the Iron Age.
  • * Findings indicate that heavy metal pollution from smelting in Timna is localized and primarily tied to production areas, suggesting minimal atmospheric lead emissions and limited health risks to nearby populations, supporting a more moderate view of the pollution's effects on ancient societies.
View Article and Find Full Text PDF
Article Synopsis
  • Soil contamination by trace metals is a major global problem, leading to research on plant species that can hyperaccumulate these metals to improve soil health.
  • This study focused on the effects of soil origin, plant population, and microbial communities on the ability of four populations of the hyperaccumulator plant A. halleri to extract cadmium (Cd) and zinc (Zn) from soil.
  • Results showed that while plant population's effect on microbial communities was limited, both non-metallicolous and metallicolous populations thrived in contaminated soils, with the non-metallicolous population outperforming others in Zn accumulation, highlighting a significant interaction between soil properties and plant capabilities.
View Article and Find Full Text PDF

Unveiling the Behavior of an Endangered Facultative Cuprophyte Species in an Abandoned Copper Mine (Southeast Portugal).

Plants (Basel)

October 2024

LEAF-Linking Landscape, Environment, Agriculture and Food Research Center, Associate Laboratory TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal.

Plant-soil interactions of endangered species with a high-priority conservation status are important to define in situ and ex situ conservation and restoration projects. The threatened endemic , thriving in the southwest of the Iberian Peninsula, can grow in metalliferous soils. The main goal of this study was to investigate the behavior of this species in soils rich in potentially toxic elements in the abandoned Aparis Cu mine.

View Article and Find Full Text PDF

Soil conditioners to fertilize, improve soil structure and support the phytostabilization of trace metal elements (TMEs) are being used more and more frequently. One of the options are agrosinters - slow-release ceramic fertilizers consisting mainly of SiO, CaO, PO and KO, with an alkaline pH and high impact strength. The effect of two different agrosinters, A1 and A2, on the growth and physiological condition of Brassica napus grown in uncontaminated and Pb-, Cd- and Zn-contaminated soil was investigated in a pot experiment.

View Article and Find Full Text PDF

Hyperaccumulating plants are able to (hyper)accumulate high concentrations of metal(loid)s in their above-ground tissues without any signs of toxicity. Studies on the root-associated microbiome have been previously conducted in relation to hyperaccumulators, yet much remains unknown about the interactions between hyperaccumulating hosts and their microbiomes, as well as the dynamics within these microbial communities. Here, we assess the impact of the plant host on shaping microbial communities of three naturally occurring populations of Noccaea species in Slovenia: Noccaea praecox and co-occurring N.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!