Assessment of Cu applications in two contrasting soils—effects on soil microbial activity and the fungal community structure

Keiblinger, Katharina M.; Schneider, Marcel; Gorfer, Markus; Paumann, Melanie; Deltedesco, Evi; Berger, Harald; Jöchlinger, Lisa; Mentler, Axel; Zechmeister‐Boltenstern, Sophie; Soja, Gerhard; Zehetner, Franz

doi:10.1007/s10646-017-1888-y

Cited by 59 publications

(30 citation statements)

References 75 publications

(78 reference statements)

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“…Additionally, in fact, EFs have proliferation in the soil with enough nutrition [11,12,13,14]. Moreover, the residues of pesticides and heavy metals affect the soil microbial activities and fungal community structures [15,16]. However, the statuses of EFs in soil stages are not well understood by researchers.…”

Section: Introductionmentioning

confidence: 99%

Biodiversity of Entomopathogenic Fungi in the Soils of South China

et al. 2019

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The southern part of China, located in tropical and south subtropical areas has unique natural environments, but the distributions of entomopathogenic fungi (EFs) in the soil are not clear. In this research, 198 soil samples were collected from the four Provinces (Autonomous Region) of South China. The results indicated that a total of 292 fungal isolates were obtained from 176 soil samples. Then, based on the morphological and rDNA-ITS sequences analysis, 213 EFs isolates of 19 species in 12 genera were identified. Furthermore, Purpureocillium lilacinum with 75 isolates was recognized as the absolutely dominant EF species, while Isaria javanica, Metarhizium anisopliae, and Beauveria bassiana (respectively with 29, 26, and 26 isolates) were the richer species. The data also indicated that Guangxi Province has the best EFs diversity with the Shannon–Wiener index (SWI) of 2.29, the soils covered with grass had the best EFs diversity with the 2.14 SWI, while the orchard and fallow land had the lowest SWI of 1.52, which suggested that the diversity of plants and insects on ground, as well as the massive application of broad-spectrum fungicides, affect the EFs diversity in the soil. Finally, the rare species, Nectria mauritiicola and Scopulariopsis brumptii were first reported about their entomopathogenic activities against Bemisia tabaci. Our experiment will give new insights to the understanding of EFs distribution characteristics and their biodiversity conservation.

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Section: Introductionmentioning

confidence: 99%

Biodiversity of Entomopathogenic Fungi in the Soils of South China

et al. 2019

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“…In the European Union, the predicted no effect concentration (PNEC) of total Cu in soil was set at 20-200 mg kg −1 , with the wide range dependent on various soil properties [5,12,50]. Toxic effects on microbial and earthworm communities have been demonstrated at concentrations of 60-200 mg Cu kg −1 [7,9,50,62,63]. The total Cu contents in the historically contaminated vineyard soils under study (201 and 337 mg kg −1 , respectively; Table 1) were above these threshold values, and the observed reductions of soluble Cu effectuated by some of the tested amendments may contribute to lowering Cu toxicity in these soils.…”

Section: Discussionmentioning

confidence: 99%

“…Copper is typically present in soils either incorporated into minerals or adsorbed to inorganic and organic soil particles, with a very small fraction of the total as its divalent free ion form (Cu 2+ ) in solution [3,9]. The fraction of Cu in soil solution can readily exchange between solution and solid phases and may be considered potentially bioavailable, as most soil organisms take up the metal from the soil solution.…”

Section: Introductionmentioning

confidence: 99%

Temporal Changes in the Efficiency of Biochar- and Compost-Based Amendments on Copper Immobilization in Vineyard Soils

et al. 2019

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Copper (Cu)-based fungicides have been an important tool against disease in viticulture since the 19th century. However, their prolonged use can lead to Cu accumulation in the soil and negatively affect soil microbiology and plant growth. The application of biochar (BC)-based amendments is a promising mitigation strategy, due to BC’s longevity in the soil and its potential to complex Cu. This study investigated temporal changes in the efficiency of various compost- and BC-based amendments to immobilize Cu in a calcareous and a slightly acidic Austrian vineyard soil. The immobilization of both historically accumulated Cu and freshly spiked Cu (250 mg kg−1) was studied. The soils were treated with six combinations of amendments containing compost and BC, with and without surface modification, as well as an additional lime treatment for the acidic soil. After treatment, the soils were incubated for 6 weeks and 3 years, after which the 0.01 M CaCl2-extractable Cu was measured. The amendments were not effective in reducing the mobility of the historically accumulated Cu in the calcareous soil, with pure compost doubling the soluble Cu. Pure wood-chip BC was the only organic amendment that led to a reduction (by 20%) of soluble Cu after 6 weeks in the acidic soil; however, after 3 years, the same amendment reduced soluble Cu by 40% and all other tested amendments were also effective in reducing the mobility of the historically accumulated Cu. The lime treatment achieved the greatest reduction in Cu mobility (56%). Freshly spiked Cu was strongly immobilized in both unamended soils, with 0.06% and 0.39% extractable after 6 weeks in the calcareous and slightly acidic soil, respectively. The amendments did not effectuate additional Cu immobilization in the calcareous soil, but in the acidic soil, the soluble Cu was further reduced to between 25% and 50% of the unamended control by the tested organic amendments and to 6% by the lime treatment after 6 weeks of incubation. Overall, the acidic soil exhibited a stronger response to the amendments than did the calcareous soil, suggesting the amendments’ effect on the soil pH was an important factor for Cu immobilization in this study. These results show the importance of developing site-specific remediation strategies for Cu accumulation in agricultural soils.

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“…However, there are growing concerns about the possible negative impact of synthetic chemical fungicides and Cu on human health and the environment 7 – 9 . In particular, Cu can accumulate in the surface horizon of the soil and have adverse effects on soil biota 10 – 12 , as well as, on plants 7 , 13 – 18 . Therefore, with the aim of reducing the impact of synthetic chemical and Cu-based fungicides, the implementation of more sustainable practices aimed at controlling phytopathogen in viticulture are highly encouraged 7 .…”

Section: Introductionmentioning

confidence: 99%

Plasmopara viticola infection affects mineral elements allocation and distribution in Vitis vinifera leaves

Cesco

Tolotti

Nadalini

et al. 2020

Sci Rep

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Plasmopara viticola is one of the most important pathogens infecting Vitis vinifera plants. The interactions among P. viticola and both susceptible and resistant grapevine plants have been extensively characterised, at transcriptomic, proteomic and metabolomic levels. However, the involvement of plants ionome in the response against the pathogen has been completely neglected so far. Therefore, this study was aimed at investigating the possible role of leaf ionomic modulation during compatible and incompatible interactions between P. viticola and grapevine plants. In susceptible cultivars, a dramatic redistribution of mineral elements has been observed, thus uncovering a possible role for mineral nutrients in the response against pathogens. On the contrary, the resistant cultivars did not present substantial rearrangement of mineral elements at leaf level, except for manganese (Mn) and iron (Fe). This might demonstrate that, resistant cultivars, albeit expressing the resistance gene, still exploit a pathogen response mechanism based on the local increase in the concentration of microelements, which are involved in the synthesis of secondary metabolites and reactive oxygen species. Moreover, these data also highlight the link between the mineral nutrition and plants’ response to pathogens, further stressing that appropriate fertilization strategies can be fundamental for the expression of response mechanisms against pathogens.

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Assessment of Cu applications in two contrasting soils—effects on soil microbial activity and the fungal community structure

Cited by 59 publications

References 75 publications

Biodiversity of Entomopathogenic Fungi in the Soils of South China

Biodiversity of Entomopathogenic Fungi in the Soils of South China

Temporal Changes in the Efficiency of Biochar- and Compost-Based Amendments on Copper Immobilization in Vineyard Soils

Plasmopara viticola infection affects mineral elements allocation and distribution in Vitis vinifera leaves

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