Climate warming masks the negative effect of microplastics on plant-soil health in a silt loam soil

Nayab, Gull; Zhou, Jie; Jia, Rong; Lv, Yihan; Yang, Yadong; Brown, Robert W.; Zang, Huadong; Jones, Davey L.; Zeng, Zhaohai

doi:10.1016/j.geoderma.2022.116083

Cited by 46 publications

(9 citation statements)

References 88 publications

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“…Ecologically harmful contaminants, also called pollutants or hazardous substances, can affect the equilibria and functionality of soil ecosystems due to their toxicity to organisms, alteration of soil chemical-physical characteristics and of the interactions between the biotic and abiotic compartments (FAO and UNEP, 2021). Several studies point out complex interactions between climate change and the release of pollutants, the former synergistically affecting exposure and toxic effects of the latter ones (Schiedek et al, 2007), making them less detectable (Nayab et al, 2022), or simply being further increased by their release (IPCC, 2014(IPCC, , 2021.…”

Section: Trends and Effectsmentioning

confidence: 99%

Altered activities of extracellular soil enzymes by the interacting global environmental changes

Zuccarini

Sardans

Asensio

et al. 2023

Global Change Biology

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Soil enzymes are crucial in mediating ecosystems' responses to environmental drivers, so that the comprehension of their sensitivity to drivers of global change can help make predictions of future scenarios and design tailored interventions of biomanipulation. Drivers of global change usually act in combination of two or more, and indirect effects of one driver acting through modification of another one often occur, yet most of both manipulative and meta‐analysis studies available tend to focus on the direct effect of one single driver on the activity of specific soil enzymes. One of the biggest challenges is, therefore, represented by the difficulty in assessing the interactions between different drivers, due to the complexity of disentangling the single direct effects from the indirect and combined ones. In this review, after elucidating the general mechanisms of soil enzyme production and activity regulation, we display the state‐of‐the‐art knowledge on direct, indirect and combined effects of the main drivers of global change on soil enzyme activities, identify gaps in knowledge and challenges from research, plus we analyse how this can reverberate in the future of biomanipulation techniques for the improvement of ecosystem services. We conclude that qualitative but not quantitative outcomes can be predicted for some interactions such as warming + drought or warming + CO2, while for other ones, the results are controversial: future basic research will have to center on this holistic approach. A general trend toward the overall increase of soil enzyme activities and acceleration of biogeochemical cycles will persist, until an inflection will be caused by factors such as future shifts in microbial communities and changes in carbon use efficiency. Applied research will develop toward the refinement of “in situ” analytical systems for the study of soil enzyme activities and the support of bioengineering for the better tailoring of interventions of biomanipulation.

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Section: Trends and Effectsmentioning

confidence: 99%

Altered activities of extracellular soil enzymes by the interacting global environmental changes

Zuccarini

Sardans

Asensio

et al. 2023

Global Change Biology

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“…In the present study, even a small temperature increase (<2 °C) was sufficient to stimulate the growth of active microorganisms and to shorten their growth lag time. This emphasizes that climate warming has a highly relevant influence on microbial physiology and accelerates microbial metabolism (Nayab et al, 2022; Walker et al, 2018). However, our results were not always in agreement with expectations that warming would induce strong changes in all soil processes (e.g., soil organic matter decomposition, total microbial biomass; Lu et al, 2013; Romero‐Olivares et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Restricted power: Can microorganisms maintain soil organic matter stability under warming exceeding 2 degrees?

Zhou

Wen

Rillig

et al. 2023

Global Ecol Biogeogr

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Aim The Paris Climate Agreement is pursuing efforts to limit global warming to less than 2 °C in this century, but increasing evidence shows that temperatures are likely to rise up to 4.8 °C by 2100. This points to an urgent need to investigate how the temperature impact on microbial regulation will endanger soil organic matter stability under warming approaching or exceeding 2 °C. Location Southern Germany and the globe. Time Period 2010–2018. Major Taxa Studied Soil organic matter stability and microbial adaptations. Methods We analyzed soil properties and enzyme activities within (a) a long‐term field experiment with soil warming to below and above 2 °C (+1.6 vs. +3.2 °C), and (b) a literature review of 213 comparable studies globally (+0–2 vs. +2–4 °C). Results The soil organic C (SOC) stock remained unchanged after 8 years under both warming magnitudes, whereas the labile C pool increased by 10% under >2 °C. Unlike the SOC pool, total N (TN) content increased by 20% under >2 °C as compared to ambient. A potential explanation for the increased TN content is linked to unbalanced processes of necromass formation and enzymatic decomposition. Warming induced faster microbial growth and turnover, but reduced catalytic efficiency and the enzyme‐mediated decomposition of oligosaccharides and polypeptides. This consequently caused N accumulation in microbial necromass. Although microbial regulation can maintain SOC at stable levels, warming exceeding 2 °C will change the projected effects of temperature on soil TN pools in the future. Early action to accomplish the 2 °C temperature goal can therefore markedly reduce the likelihood that large regions will face substantial increase of SOC availability, N accumulation and related climate impacts on C and N cycling. Main Conclusions It is crucial to include microbial metabolic responses (i.e., faster microbial growth and turnover) to warming in global C and N cycle models to improve the prediction of climate warming scenarios.

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“…The activities of soil enzymes, β‐1,4‐glucosidase (BG), β‐ D ‐xylopyranoside (BX), β‐ D ‐celliobiosidase (CE), β‐1,4‐ N ‐acetylglucosaminidas (NAG), L ‐leucine aminopeptidase (LAP), and acid phosphatase (ACP), were quantified with fluorogenically labelled substrates (Nayab et al, 2022; Xu et al, 2022; Zhou et al, 2021). In brief, add 50 mL distilled water to 1 g fresh soil, shake for 0.5 hr, and then aspirate 50 μL of the suspension.…”

Section: Methodsmentioning

confidence: 99%

Short‐term reduction in cropping intensity improves soil quality of topsoil rather than subsoil

et al. 2023

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Enhancing cropping intensity is the most effective and significant method to improve regional crop production and ensure food security. However, our understanding of the impacts of reduced cropping intensity on soil quality and ecosystem multifunctionality (EMF) with soil depth remains incomplete in tropical regions. Here, we performed a 4‐year field experiment to estimate the impacts of cropping intensity (continuous cropping, winter fallow, and annual fallow) on soil quality and EMF depending on soil depths. We found that reduced cropping intensity improved soil quality at the topsoil (0–10 cm), while it had no significant influences on soil carbon (C) and nitrogen (N) storage, as well as soil EMF at 0–40 cm. Soil microbes were limited by C and P but not co‐limited by N in all three cropping systems. Reduced cropping intensity exacerbated microbial C limitation at 0–10 cm due to reduced additional C resources (i.e., rice straw and manure) input. Redundancy analysis and Pearson correlation showed that soil N significantly affected the C‐, N‐, and P‐acquisition enzyme activities, and correlated positively with soil organic C, microbial biomass C, and available P. In conclusion, short‐term reduction in cropping intensity improves topsoil quality but not soil EMF under paddy‐upland rotations in the tropical region.

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Climate warming masks the negative effect of microplastics on plant-soil health in a silt loam soil

Cited by 46 publications

References 88 publications

Altered activities of extracellular soil enzymes by the interacting global environmental changes

Altered activities of extracellular soil enzymes by the interacting global environmental changes

Restricted power: Can microorganisms maintain soil organic matter stability under warming exceeding 2 degrees?

Short‐term reduction in cropping intensity improves soil quality of topsoil rather than subsoil

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