Wheat yellow mosaic enhances bacterial deterministic processes in a plant-soil system

Zhang, Haoqing; Wu, Chuanfa; Wang, Fangyan; Wang, Haiting; Chen, Guixian; Cheng, Ye; Chen, Jianping; Yang, Jian; Ge, Tida

doi:10.1016/j.scitotenv.2021.151430

Cited by 31 publications

(20 citation statements)

References 48 publications

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“…The ecological pattern of microbial communities in soil aggregates has received little attention so far ( Wilpiszeski et al, 2019 ). We observed that deterministic processes of homogeneous selection were the main drivers for bacterial community, consistent with the results of most microbial assemblages studies that niche-based processes generally impact bacteria more than neutral processes ( Powell et al, 2015 ; Delgado-Baquerizo et al, 2018 ; Wang et al, 2020 ; Xue et al, 2021 ; Zhang et al, 2022 ). Contrarily, other works have shown that bacterial assemblage is more stochastic in agricultural soil ( Chen et al, 2020 ; Li et al, 2021 ).…”

Section: Discussionsupporting

confidence: 89%

“…Compared with the single-season (RS), the contribution of deterministic processes to bacterial assemblage was reduced by double-season cropping system (RD) within both bulk soil and across aggregate sizes. Dramatic increases in SOC and TN under RD were observed, indicating that increases in soil nutrients may attenuate determinism by alleviating selective pressure for bacterial survival and fitness in nutrient-rich soil ( Zhang et al, 2022 ). Regarding biotic factors, we found lower PNC within bacteria in RD, suggesting weaker selection due to reduced competition between microbes.…”

Section: Discussionmentioning

confidence: 99%

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Linking bacterial and fungal assemblages to soil nutrient cycling within different aggregate sizes in agroecosystem

Zhang

et al. 2022

Front. Microbiol.

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Soil aggregates provide spatially heterogeneous microhabitats that support the coexistence of soil microbes. However, there remains a lack of detailed assessment of the mechanism underlying aggregate-microbiome formation and impact on soil function. Here, the microbial assemblages within four different aggregate sizes and their correlation with microbial activities related to nutrient cycling were studied in rice fields in Southern China. The results show that deterministic and stochastic processes govern bacterial and fungal assemblages in agricultural soil, respectively. The contribution of determinism to bacterial assemblage improved as aggregate size decreased. In contrast, the importance of stochasticity to fungal assemblage was higher in macroaggregates (>0.25 mm in diameter) than in microaggregates (<0.25 mm). The association between microbial assemblages and nutrient cycling was aggregate-specific. Compared with microaggregates, the impacts of bacterial and fungal assemblages on carbon, nitrogen, and phosphorus cycling within macroaggregates were more easily regulated by soil properties (i.e., soil organic carbon and total phosphorus). Additionally, soil nutrient cycling was positively correlated with deterministic bacterial assemblage but negatively correlated with stochastic fungal assemblage in microaggregates, implying that bacterial community may accelerate soil functions when deterministic selection increases. Overall, our study illustrates the ecological mechanisms underlying the association between microbial assemblages and soil functions in aggregates and highlights that the assembly of aggregate microbes should be explicitly considered for revealing the ecological interactions between agricultural soil and microbial communities.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Linking bacterial and fungal assemblages to soil nutrient cycling within different aggregate sizes in agroecosystem

Zhang

et al. 2022

Front. Microbiol.

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“…Proteobacteria and Bacteroidetes are two significant phyla that positively respond to cover vegetation (40)(41)(42), while Mortierellomycota can be saprophytic on the residual limbs of plants and animals and decompose their remains (43). Proteobacteria and Bacteroidetes from bacteria and Mortierellomycota from fungi significantly increased in irrigated agricultural plots.…”

Section: Discussionmentioning

confidence: 99%

Agriculture by Irrigation Modifies Microbial Communities and Soil Functions Associated With Enhancing C Uptake of a Steppe Semi-Arid Soil in Northern Patagonia

et al. 2022

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The transformation of the semiarid steppe soil after 5 years of intensive irrigated agriculture in Northern Patagonia was analyzed in an on-farm study. The private grower venture used conservative practices, including no-till to maintain soil structure, high crop rotation and cover crops. To characterize steppe soil changes by irrigated agriculture, we analyzed the enzymatic activities involved in the biogeochemical cycles (carbon, nitrogen, phosphorus and sulfur), the whole soil fatty acids profile, the state of soil aggregation, and the bacterial and fungal microbiota through DNA sequencing methods. After 5 years of management, irrigated agriculture soil increased organic matter (25–33%), enzymatic activities -Cellobiose-hydrolase (60–250%), Phosphatase (35–60%), Xylanase (101–185%), Aryl-sulphatase (32–100%), Chitinase (85%), β-Glucosidase (61–128%), Leucine-aminopeptidase (138%)—depending on soil series, and macro-aggregate formation at the expense of the abundance of micro-aggregates in the first 0–5 cm of soil. Whole soil fatty acids profiles changed, enhancing mono-unsaturated, branched, cyclic and methylated fatty acids. Microbial communities showed significant differences between irrigated agriculture sites and pristine valleys. The richness-based alpha-diversity established increased bacterial communities but decreased fungal communities in cultivated soil. Indicators selected using the LEfSe method revealed the bacterial taxa Acidothermus, Conexibacter and Thermoleophilum, associated with semiarid steppe soil while Asticcacaulis, Aquicella and Acromobacter with irrigated agriculture. Ascomycota Phylum changed its community composition, being both taxa Aspergillus and Alternaria reduced while Stagonospora and Metarhizium were enhanced in irrigated agriculture. Taxa belonging to Acidobacteria, Chloroflexi, and Betaproteobacteria, that were enriched in irrigated agriculture soils, were associated with higher capture of C but smaller values of aggregation, while taxa abundant on steppe soils belonging to Actinobacteria, Alphaproteobacteria, and Firmicutes were positively associated with soil aggregation but negatively with C uptake.

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“…Complex fungal networks in the soil lead to better community stability and provide better anti-interference (W. Yang et al, 2019 ; L. Xu et al, 2020 ) Simultaneously, a higher positive correlation edge in soil fungal communities of healthy plants may mean more cooperation (J. Zhang et al, 2021 ) and a greater connected network provides more functional redundancy ( Mougi and Kondoh, 2012 ). In addition, more complex networks can cope with diverse and complex environmental changes or inhibit infection of plants by soil-transmitted pathogens (H. Yang et al, 2017 ; J.…”

Section: Discussionmentioning

confidence: 99%

“…Soil physicochemical properties significantly influence soil microbial diversity. For instance, the contents of organic carbon and total nitrogen in wheat rhizosphere soil were positively correlated with wheat yellow mosaic (WYM) (H. Zhang et al, 2022 ). Increasing organic input can improve soil microbial diversity and stability (Y.…”

Section: Introductionmentioning

confidence: 99%

Changes in soil fungal communities after onset of wheat yellow mosaic virus disease

Hu²,

Cai³

et al. 2022

Front. Bioeng. Biotechnol.

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Rhizosphere-associated microbes have important implications for plant health, but knowledge of the association between the pathological conditions of soil-borne virus-infected wheat and soil microbial communities, especially changes in fungal communities, remains limited. We investigated the succession of fungal communities from bulk soil to wheat rhizosphere soil in both infected and healthy plants using amplicon sequencing methods, and assessed their potential role in plant health. The results showed that the diversity of fungi in wheat rhizosphere and bulk soils significantly differed post wheat yellow mosaic virus disease onset. The structure differences in fungal community at the two wheat health states or two compartment niches were evident, soil physicochemical properties (i.e., NH4+) contribute to differences in fungal community structure and alpha diversity. Comparison analysis showed Mortierellomycetes and Dothideomycetes as dominant communities in healthy wheat soils at class level. The genus Pyronemataceae and Solicoccozyma were significantly are significantly enriched in rhizosphere soil of diseased plant, the genus Cystofilobasidium, Cladosporium, Mortierella, and Stephanonectria are significantly enriched in bulk soil of healthy plant. Co-occurrence network analysis showed that the fungi in healthy wheat soil has higher mutual benefit and connectivity compared with diseased wheat. The results of this study demonstrated that the occurrence of wheat yellow mosaic virus diseases altered both fungal community diversity and composition, and that NH4+ is the most important soil physicochemical factor influencing fungal diversity and community composition.

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Wheat yellow mosaic enhances bacterial deterministic processes in a plant-soil system

Cited by 31 publications

References 48 publications

Linking bacterial and fungal assemblages to soil nutrient cycling within different aggregate sizes in agroecosystem

Linking bacterial and fungal assemblages to soil nutrient cycling within different aggregate sizes in agroecosystem

Agriculture by Irrigation Modifies Microbial Communities and Soil Functions Associated With Enhancing C Uptake of a Steppe Semi-Arid Soil in Northern Patagonia

Changes in soil fungal communities after onset of wheat yellow mosaic virus disease

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