Soil microbial interactions modulate the effect of Artemisia ordosica on herbaceous species in a desert ecosystem, northern China

Bai, Yuxuan; She, Weiwei; Ling, Miao; Qin, Shugao; Zhang, Yuqing

doi:10.1016/j.soilbio.2020.108013

Cited by 19 publications

(11 citation statements)

References 90 publications

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“…Keystone taxa represent the highly connected microbes that play important roles in the structure and functions of microbiota and act as indicators of environmental changes [ 36 , 39 , 40 ], and hence are expected to have significant relationships to soil MF. In this study, we identified Solirubrobacterales (at Fuxian) and Actinomycetales and Acidimicrobiales (at Nenjiang) as keystone taxa, which were consistent with previous studies as keystone taxa in grassland, agricultural or desert soils [ 24 , 39 , 102 – 104 ]. While spatiotemporal heterogeneity drives the abundance and distribution of keystone taxa [ 39 ], the variations of keystone taxa in this study may result from the difference of pedogenic, adaphic, and climatic factors between these two sites.…”

Section: Discussionsupporting

confidence: 91%

Erosion reduces soil microbial diversity, network complexity and multifunctionality

et al. 2021

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While soil erosion drives land degradation, the impact of erosion on soil microbial communities and multiple soil functions remains unclear. This hinders our ability to assess the true impact of erosion on soil ecosystem services and our ability to restore eroded environments. Here we examined the effect of erosion on microbial communities at two sites with contrasting soil texture and climates. Eroded plots had lower microbial network complexity, fewer microbial taxa, and fewer associations among microbial taxa, relative to non-eroded plots. Soil erosion also shifted microbial community composition, with decreased relative abundances of dominant phyla such as Proteobacteria, Bacteroidetes, and Gemmatimonadetes. In contrast, erosion led to an increase in the relative abundances of some bacterial families involved in N cycling, such as Acetobacteraceae and Beijerinckiaceae. Changes in microbiota characteristics were strongly related with erosion-induced changes in soil multifunctionality. Together, these results demonstrate that soil erosion has a significant negative impact on soil microbial diversity and functionality.

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Section: Discussionsupporting

confidence: 91%

Erosion reduces soil microbial diversity, network complexity and multifunctionality

et al. 2021

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“…The copyright holder for this this version posted January 19, 2023. ; https://doi.org/10.1101/2023.01.19.524707 doi: bioRxiv preprint largely shaped by metabolic interactions and resource competition, respectively. Although our study provides some insights into the mechanisms underlying the plant microbiomes, longitudinal experiments should be conducted (Bai et al, 2020).…”

Section: Figures 1-4 S1-s4mentioning

confidence: 99%

“…These results imply that the microbial compositions of non-plant and plant land are largely shaped by metabolic interactions and resource competition, respectively. Although our study provides some insights into the mechanisms underlying the plant microbiomes, longitudinal experiments should be conducted (Bai et al, 2020).…”

Section: Shrubs Harbour Different Microbial Communities Across Differ...mentioning

confidence: 99%

Plant selection and ecological microhabitat drive domestications of shrub-associated microbiomes in a revegetated shrub ecosystem

Lai

Sun

Yang

et al. 2023

Preprint

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Shrubs are used for revegetation of degraded dryland ecosystem worldwide and could recruit large numbers of microbes from the soil; however, the plant-associated microbiome assembly and the effect of plant introduction on the soil microbiomes are not fully understood. We detected shrub-associated microbes from five ecological microhabitats, including the leaves, litter, roots, rhizosphere, and root zone, across four xeric shrub plantations (Artemisia ordosica, Caragana korshinskii, Hedysarum mongolicum, and Salix psammophila). To detect the patterns of shrub-associated microbiome assembly, 16S and ITS2 rRNA gene sequencing was performed. PERMANOVA and differential abundance analysis demonstrated that changes in the bacterial and fungal communities were more dependent on the microhabitats rather than on the plant species, with distinct niche differentiation. Moreover, source tracking and nestedness analysis showed that shrub-associated bacteria were primarily derived from bulk soils and slightly pruned in different microhabitats; however, a similar pattern was not found for fungi. Furthermore, the surrounding zone of roots was a hotpot for microbial recruitments of revegetated shrubs. Null model analysis indicated that homogeneous selection of determinism dominated the bacterial communities, whereas dispersal limitation and undominated process of stochasticity drove the assembly of fungal communities. Our findings indicate that ecological microhabitat of revegetated shrublands was the main predictor of the bacterial and fungal compositional variances. This study will help advance our understanding of the mechanism underlying the plant-soil microbiome feedbacks during the initial plant-establishment period in a dryland ecosystem. Further, this work provides theoretical reference for establishment and sustainable management of shrublands in drylands.

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“…Previous studies indicated that the successional gradient of vegetation community restoration in desert ecosystems is actually one type of disturbance gradient, with the disturbance to the surface layer decreasing with increasing vegetation cover (e.g. Bai et al 2018;Bai et al 2020). In such arid environments, soil nutrient content, water use e ciency, and microbial community structure vary simultaneously with community succession (Lozano et al 2014;Liu et al 2018;Bai et al 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Bai et al 2018;Bai et al 2020). In such arid environments, soil nutrient content, water use e ciency, and microbial community structure vary simultaneously with community succession (Lozano et al 2014;Liu et al 2018;Bai et al 2020). However, how soil microbes affect plant-soil interactions along community successional gradients in alpine desert ecosystems remains unclear.…”

Section: Introductionmentioning

confidence: 99%

Differences in soil microbial communities with successional stage depend on vegetation coverage and soil substrates in alpine desert shrublands

Dong

Wang

et al. 2023

Plant Soil

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Background and aims In semiarid ecosystems, changes in plant communities are promoted under shrub canopies during restoration, but the link between shrub community restoration dynamics and changes in soil microbe communities is still unclear.Methods We characterized the community structure and plant interactions of soil microbes by combining different methodological approaches (including high-throughput sequencing of the 16S rRNA gene and ITS gene, analysis of phospholipid fatty acids (PLFAs) and chloroform fumigation) and the key driving factors along a successional gradient of Sophora moorcroftiana shrub community in the middle reaches of the Yarlung Zangbo River.Results Soil microbial biomass carbon (MBC) and nitrogen (MBN), total PLFAs, and alpha diversity increased signi cantly as the successional stage advanced, and MBC and MBN were positively correlated with the carbon and nitrogen contents in the soil. Mantel test showed that successional stage-induced changes in soil microbial beta diversity were mainly associated with shrub coverage and soil physicochemical properties. The relative abundances of bacterial PLFAs, particularly those of gram-negative bacteria, such as Bacteroidetes, Alphaproteobacteria and Betaproteobacteria, signi cantly decreased with succession; the opposite was true for Acidobacteria, Planctomycetes, Gemmatimonadetes Deltaproteobacteria and Gammaproteobacteria. However, the proportion of fungi did not signi cantly differ among the four successional stages; the dominant phyla were Ascomycota and Basidiomycota. ConclusionWe suggest that shrubs directly shape soil microbial communities or indirectly affect such communities by altering soil substrates. Our ndings advance the current understanding of sand-stabilizing plant-soil interactions during natural restoration and the reversal of deserti cation in stressful desert ecosystems.

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Soil microbial interactions modulate the effect of Artemisia ordosica on herbaceous species in a desert ecosystem, northern China

Cited by 19 publications

References 90 publications

Erosion reduces soil microbial diversity, network complexity and multifunctionality

Erosion reduces soil microbial diversity, network complexity and multifunctionality

Plant selection and ecological microhabitat drive domestications of shrub-associated microbiomes in a revegetated shrub ecosystem

Differences in soil microbial communities with successional stage depend on vegetation coverage and soil substrates in alpine desert shrublands

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