Pasture management intensification shifts the soil microbiome composition and ecosystem functions

Tomazelli, Daniela; Filho, Osmar Klauberg; Mendes, Sandra Denise Camargo; Baldissera, T. C.; Garagorry, F. C.; Tsai, Siu Mui; Pinto, Cassiano Eduardo; Mendes, Lucas William; Goss‐Souza, Dennis

doi:10.1016/j.agee.2023.108355

Cited by 10 publications

(5 citation statements)

References 72 publications

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“…However, the mean path length and network diameter were also smaller in these land use types, suggesting that microorganisms in these networks were more closely connected to each other ( Liu L. X. et al, 2023 ). In contrast to our results, a recent Brazilian study found more nodes and edges in the network structures of more intensively managed rangelands than in natural grasslands ( Tomazelli et al, 2023 ). This discrepancy may be largely attributed to differences in climatic conditions between Brazil and the Inner Mongolian Plateau ( Goss-Souza et al, 2017 ).…”

Section: Discussioncontrasting

confidence: 99%

“…In addition, shrubland is also the least anthropogenic land use among the five land use types (no ploughing, watering, grazing, recreation, etc. ), which may be one of the reasons for its higher diversity ( Tomazelli et al, 2023 ). Fungal richness was also highest in woodlands, probably because tall trees have strong xylem root systems that can act as hosts for fungi and can provide them with available nutrients ( Urbanova et al, 2015 ; de Vries et al, 2018 ).…”

Section: Discussionmentioning

confidence: 99%

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Soil microbial community variation among different land use types in the agro-pastoral ecotone of northern China is likely to be caused by anthropogenic activities

Sun,

Zhang

et al. 2024

Front. Microbiol.

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There are various types of land use in the agricultural and pastoral areas of northern China, including natural grassland and artificial grassland, scrub land, forest land and farmland, may change the soil microbial community However, the soil microbial communities in these different land use types remain poorly understood. In this study, we compared soil microbial communities in these five land use types within the agro-pastoral ecotone of northern China. Our results showed that land use has had a considerable impact on soil bacterial and fungal community structures. Bacterial diversity was highest in shrubland and lowest in natural grassland; fungal diversity was highest in woodland. Microbial network structural complexity also differed significantly among land use types. The lower complexity of artificial grassland and farmland may be a result of the high intensity of anthropogenic activities in these two land-use types, while the higher structural complexity of the shrubland and woodland networks characterised by low-intensity management may be a result of low anthropogenic disturbance. Correlation analysis of soil properties (e.g., soil physicochemical properties, soil nutrients, and microbiomass carbon and nitrogen levels) and soil microbial communities demonstrated that although microbial taxa were correlated to some extent with soil environmental factors, these factors did not sufficiently explain the microbial community differences among land use types. Understanding variability among soil microbial communities within agro-pastoral areas of northern China is critical for determining the most effective land management strategies and conserving microbial diversity at the regional level.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Soil microbial community variation among different land use types in the agro-pastoral ecotone of northern China is likely to be caused by anthropogenic activities

Sun,

Zhang

et al. 2024

Front. Microbiol.

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“…This suggests that external environmental changes can affect various taxonomic levels, with generally finer classifications of soil bacteria exhibiting higher sensitivity to environmental changes. This is consistent with the findings of Daniela et al (2023), who observed different evolutionary trends in soil bacteria at the phylum and OTU levels during the conversion process from natural grasslands to cultivated pastures. Over the years, the OTU richness and diversity in dryland decreased steadily.…”

Section: J O U R N a L P R E -P R O O Fsupporting

confidence: 93%

Soil bacterial succession with different land uses along a millennial chronosequence derived from the Yangtze River flood plain

Su,

Gao,

et al. 2024

Science of The Total Environment

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“…There is increasing evidence that aboveground vegetation interacts with belowground microbial populations, with significant outcomes for cycling of both C and N in soils (Wardle et al 2004;van der Heijden et al 2008;Chen et al 2022;Tomazelli et al 2023). In this study, we used a random spatial arrangement of carefully chosen aboveground treatments (plant species/functional traits and N fertilisation level in Experiment 1; grass species and endophyte infection extended phenotype in Experiment 2) across an initially common soil mineralogy and community.…”

Section: Discussionmentioning

confidence: 99%

“…The myriad soil microbial species perform a diverse array of metabolic functions and are central to global carbon (C) and nitrogen (N) sequestration and cycling. Interactions and feedback between above-and belowground organisms are increasingly seen to control terrestrial ecosystem processes and services (Wardle et al 2004;De Deyn et al 2008;van der Heijden et al 2008;Zak et al 2011;Tomazelli et al 2023). Sustaining those services, with any degree of certainty, faces increasing challenge.…”

Section: Introductionmentioning

confidence: 99%

Plant species, nitrogen status and endophytes are drivers of soil microbial communities in grasslands

Rasmussen,

Parsons,

Russell

et al. 2023

Crop & Pasture Science

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Context There is concern that the introduction of ‘novel’ plant germplasm/traits could outpace our capacity to measure and so assess their impacts on soil microbial communities and function. Aim This study aimed to investigate the effects of plant species/functional traits, nitrogen (N) fertilisation and endophyte infection on grassland soil microbial communities within a short time span of 2 years. Methods Two field experiments with monoculture plots were conducted in a common soil. Experiment 1 compared grasses and legumes, using two cultivars of perennial ryegrass (Lolium perenne) that varied in fructan content, along with the legumes white clover (Trifolium repens) and bird’s-foot trefoil (Lotus pedunculatus) that varied in tannin content. Grass treatments received high and low N application levels. Experiment 2 compared the presence/absence of Epichloë strains in ryegrass, tall fescue (Schedonorus phoenix) and meadow fescue (Schedonorus pratensis). Soil microbial communities were analysed by using high-throughput sequencing of DNA isolated from bulk soil cores. Key results Higher abundance of ligninolytic fungi was found in grass soils and pectinolytic fungi in legume soils. Levels of N fertilisation and fructan in ryegrass had only minor effects on soil fungal communities. By contrast, N fertilisation or fixation had a strong effect on bacterial communities, with higher abundance of nitrifiers and denitrifiers in high-N grass soils and in legume soils than in low-N grass soils. Epichloë affected soil microbiota by reducing the abundance of certain fungal phytopathogens, increasing mycorrhizal fungi and reducing N-fixing bacteria. Conclusions Chemical composition of plant cell walls, which differs between grasses and legumes, and presence of Epichloë in grasses were the main drivers of shifts in soil microbial communities. Implications Impacts of farming practices such as mono- or poly-culture, N fertilisation and presence of Epichloë in grasses on soil microbial communities should be considered in pasture management.

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Pasture management intensification shifts the soil microbiome composition and ecosystem functions

Cited by 10 publications

References 72 publications

Soil microbial community variation among different land use types in the agro-pastoral ecotone of northern China is likely to be caused by anthropogenic activities

Soil microbial community variation among different land use types in the agro-pastoral ecotone of northern China is likely to be caused by anthropogenic activities

Soil bacterial succession with different land uses along a millennial chronosequence derived from the Yangtze River flood plain

Plant species, nitrogen status and endophytes are drivers of soil microbial communities in grasslands

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