Soil aggregate microbiomes steer plant community overyielding in ungrazed and intensively grazed grassland soils

Xiliang Li; Zhen Zhang; Xiaotao Lü; Yuanheng Li; Ke Jin; Wim H. van der Putten

doi:10.1016/j.jenvman.2022.115919

Soil aggregate microbiomes steer plant community overyielding in ungrazed and intensively grazed grassland soils

Xiliang Li, Zhen Zhang, Xiaotao Lü, Yuanheng Li^*, Ke Jin, Wim H. van der Putten

^*Bijbehorende auteur voor dit werk

NIOO - Terrestrial Ecology (TE)

Onderzoeksoutput: Bijdrage aan wetenschappelijk tijdschrift/periodieke uitgave › Artikel › Wetenschappelijk › peer review

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Plant and soil microbial community composition play a central role in maintaining ecosystem functioning. Most studies have focused on soil microbes in the bulk soil, the rhizosphere and inside plant roots, however, less is known about the soil community that exists within soil aggregates, and how these soil communities influence plant biomass production. Here, using field-conditioned soil collected from experimental ungrazed and grazed grasslands in Inner Mongolia, China, we examined the composition of microbiomes inside soil aggregates of various size classes, and determined their roles in plant-soil feedbacks (PSFs), diversity-productivity relationships, and diversity-dependent overyielding. We found that grazing induced significantly positive PSF effects, which appeared to be mediated by mycorrhizal fungi, particularly under plant monocultures. Despite this, non-additive effects of microbiomes within different soil aggregates enhanced the strength of PSF under ungrazed grassland, but decreased PSF strength under intensively grazed grassland. Plant mixture-related increases in PSF effects markedly enhanced diversity-dependent overyielding, primarily due to complementary effects. Selection effects played far less of a role. Our work suggests that PSF contributes to diversity-dependent overyielding in grasslands via non-additive effects of microbiomes within different soil aggregates. The implication of our work is that assessing the effectiveness of sustainable grassland restoration and management on soil properties requires inspection of soil aggregate size-specific microbiomes, as these are relevant determinants of the feedback interactions between soil and plant performance.

Originele taal-2	Engels
Artikelnummer	115919
Pagina's (van-tot)	115919
Tijdschrift	Journal of Environmental Management
Volume	321
DOI's	https://doi.org/10.1016/j.jenvman.2022.115919
Status	Gepubliceerd - 2022

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10.1016/j.jenvman.2022.115919

Li, X. et al 2022Final published version, 4,51 MB

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title = "Soil aggregate microbiomes steer plant community overyielding in ungrazed and intensively grazed grassland soils",

abstract = "Plant and soil microbial community composition play a central role in maintaining ecosystem functioning. Most studies have focused on soil microbes in the bulk soil, the rhizosphere and inside plant roots, however, less is known about the soil community that exists within soil aggregates, and how these soil communities influence plant biomass production. Here, using field-conditioned soil collected from experimental ungrazed and grazed grasslands in Inner Mongolia, China, we examined the composition of microbiomes inside soil aggregates of various size classes, and determined their roles in plant-soil feedbacks (PSFs), diversity-productivity relationships, and diversity-dependent overyielding. We found that grazing induced significantly positive PSF effects, which appeared to be mediated by mycorrhizal fungi, particularly under plant monocultures. Despite this, non-additive effects of microbiomes within different soil aggregates enhanced the strength of PSF under ungrazed grassland, but decreased PSF strength under intensively grazed grassland. Plant mixture-related increases in PSF effects markedly enhanced diversity-dependent overyielding, primarily due to complementary effects. Selection effects played far less of a role. Our work suggests that PSF contributes to diversity-dependent overyielding in grasslands via non-additive effects of microbiomes within different soil aggregates. The implication of our work is that assessing the effectiveness of sustainable grassland restoration and management on soil properties requires inspection of soil aggregate size-specific microbiomes, as these are relevant determinants of the feedback interactions between soil and plant performance.",

keywords = "Complementary effect, Diversity-productivity relationship, Livestock grazing, Plant-soil feedback, Semi-arid grasslands, Soil aggregates, Grassland, Soil Microbiology, Biomass, Plants, Microbiota, Ecosystem, Soil",

author = "Xiliang Li and Zhen Zhang and Xiaotao L{\"u} and Yuanheng Li and Ke Jin and {van der Putten}, {Wim H.}",

note = "Data archiving: data are confidential",

year = "2022",

doi = "10.1016/j.jenvman.2022.115919",

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pages = "115919",

journal = "Journal of Environmental Management",

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T1 - Soil aggregate microbiomes steer plant community overyielding in ungrazed and intensively grazed grassland soils

AU - Li, Xiliang

AU - Zhang, Zhen

AU - Lü, Xiaotao

AU - Li, Yuanheng

AU - Jin, Ke

AU - van der Putten, Wim H.

N1 - Data archiving: data are confidential

PY - 2022

Y1 - 2022

N2 - Plant and soil microbial community composition play a central role in maintaining ecosystem functioning. Most studies have focused on soil microbes in the bulk soil, the rhizosphere and inside plant roots, however, less is known about the soil community that exists within soil aggregates, and how these soil communities influence plant biomass production. Here, using field-conditioned soil collected from experimental ungrazed and grazed grasslands in Inner Mongolia, China, we examined the composition of microbiomes inside soil aggregates of various size classes, and determined their roles in plant-soil feedbacks (PSFs), diversity-productivity relationships, and diversity-dependent overyielding. We found that grazing induced significantly positive PSF effects, which appeared to be mediated by mycorrhizal fungi, particularly under plant monocultures. Despite this, non-additive effects of microbiomes within different soil aggregates enhanced the strength of PSF under ungrazed grassland, but decreased PSF strength under intensively grazed grassland. Plant mixture-related increases in PSF effects markedly enhanced diversity-dependent overyielding, primarily due to complementary effects. Selection effects played far less of a role. Our work suggests that PSF contributes to diversity-dependent overyielding in grasslands via non-additive effects of microbiomes within different soil aggregates. The implication of our work is that assessing the effectiveness of sustainable grassland restoration and management on soil properties requires inspection of soil aggregate size-specific microbiomes, as these are relevant determinants of the feedback interactions between soil and plant performance.

AB - Plant and soil microbial community composition play a central role in maintaining ecosystem functioning. Most studies have focused on soil microbes in the bulk soil, the rhizosphere and inside plant roots, however, less is known about the soil community that exists within soil aggregates, and how these soil communities influence plant biomass production. Here, using field-conditioned soil collected from experimental ungrazed and grazed grasslands in Inner Mongolia, China, we examined the composition of microbiomes inside soil aggregates of various size classes, and determined their roles in plant-soil feedbacks (PSFs), diversity-productivity relationships, and diversity-dependent overyielding. We found that grazing induced significantly positive PSF effects, which appeared to be mediated by mycorrhizal fungi, particularly under plant monocultures. Despite this, non-additive effects of microbiomes within different soil aggregates enhanced the strength of PSF under ungrazed grassland, but decreased PSF strength under intensively grazed grassland. Plant mixture-related increases in PSF effects markedly enhanced diversity-dependent overyielding, primarily due to complementary effects. Selection effects played far less of a role. Our work suggests that PSF contributes to diversity-dependent overyielding in grasslands via non-additive effects of microbiomes within different soil aggregates. The implication of our work is that assessing the effectiveness of sustainable grassland restoration and management on soil properties requires inspection of soil aggregate size-specific microbiomes, as these are relevant determinants of the feedback interactions between soil and plant performance.

KW - Complementary effect

KW - Diversity-productivity relationship

KW - Livestock grazing

KW - Plant-soil feedback

KW - Semi-arid grasslands

KW - Soil aggregates

KW - Grassland

KW - Soil Microbiology

KW - Biomass

KW - Plants

KW - Microbiota

KW - Ecosystem

KW - Soil

U2 - 10.1016/j.jenvman.2022.115919

DO - 10.1016/j.jenvman.2022.115919

M3 - Article

C2 - 36001914

AN - SCOPUS:85136093468

SN - 0301-4797

VL - 321

SP - 115919

JO - Journal of Environmental Management

JF - Journal of Environmental Management

M1 - 115919

ER -

Soil aggregate microbiomes steer plant community overyielding in ungrazed and intensively grazed grassland soils

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