Changes in Soil Bacterial Community Structure in Bermudagrass Turf under Short-Term Traffic Stress

Wei, Hongjian; Wang, Yongqi; Zhang, Juming; Ge, Liangfa; Liu, Tianzeng

doi:10.3390/agriculture12050668

Cited by 3 publications

(3 citation statements)

References 66 publications

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“…The increases in the relative abundances of Sphingomonas and Massilia provide more AP for plants and fungi in continuous-cropping soil. Gemmatimonas, Micrococcaceae, and Micromonosporaceae are bene cial bacteria that widely exist in soil and play a very important role in the stability of soil ecosystems(Oshiki et al 2022;Wei et al 2022). In this study, the abundances of Gemmatimonas, Micrococcaceae, and Micromonosporaceae decreased signi cantly with continuous-cropping duration.…”

mentioning

confidence: 55%

Long-term Continuous-cropping System Altered the Microbial Communities and Nutrient Cycles in Karst Agroecosystems

Ding

Shang²,

He³

et al. 2022

Preprint

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Purpose Understanding the response of microbial communities and their potential functions is essential for the long-term continuous-cropping karst agroecosystems. However, there are few studies on the interaction between soil physicochemical factors and microbial community dynamics in karst agroecosystems under long-term continuous-cropping conditions. Methods We investigated the physicochemical properties, metabolites, and microbial diversity of rhizosphere soils in which tobacco was cropped continuously for 0, 5, and 20 years. Results Compared with CK, the bacterial diversity significantly increased and then decreased with the duration of continuous cropping. In addition, the fungal diversity increased significantly, indicating that the change in fungi may shift the nutrient cycles of continuous-cropping karst agroecosystems. Soil pH and the contents of available phosphorus (AP) and alkali-hydrolyzable nitrogen (AN) were the key environmental factors leading to changes in the structures and functions of microbial communities in continuous-cropping soil. The metabolites released by tobacco, such as palmitic acid, 3-hydroxypropionic acid, stearic acid, and hippuric acid, reduced soil pH. Conclusion Continuous cropping system altered the ecological balance of the soil microbial communities.

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confidence: 55%

Long-term Continuous-cropping System Altered the Microbial Communities and Nutrient Cycles in Karst Agroecosystems

Ding

Shang²,

He³

et al. 2022

Preprint

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“…The abundance of dominant fungal groups changed consistently under the different organic acid treatments, following the order of Ascomycota > Basidiomycota > Mortierellomycota. Ascomycota are mainly related to the decomposition of litter or residues in the ecosystem [35]. Basidiomycota are mainly related to the decomposition of lignin and cellulose [36].…”

Section: Different Organic Acids Affect the Dominant Flora In Sanqi S...mentioning

confidence: 99%

Effects of Exogenous Organic Acids on the Soil Metabolites and Microbial Communities of Panax notoginseng from the Forest Understory

Hei,

Li,

Wang

et al. 2024

Agronomy

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Panax notoginseng (Sanqi) is a precious traditional Chinese medicine that is commonly cultivated using conventional management methods in agricultural systems in Yunnan, China, where it faces the challenge of continuous cropping obstacles (CCOs). However, the existence of Sanqi CCOs in Sanqi–pine agroforestry systems remains unclear. Here, we applied three types of exogenous organic acids (phthalic acid, palmitic acid, and phthalic + palmitic mixed organic acids) mainly derived from the root exudates of Sanqi to simulate the CCOs; then, we compared the effects on plant growth, soil physicochemical properties, soil microbes, and soil metabolites. We found that organic acid concentrations of >250 mg/kg reduced the fresh weight of Sanqi and the levels of total nitrogen, ammonium nitrogen, soil water content, total phosphorus, and pH value; these concentrations also increased the soil bacterial and fungal α-diversity. The type of organic acid, as opposed to the concentration and duration of treatment, had a vital impact on the structure of the bacterial and fungal community in Sanqi soils. Moreover, the organic acid concentrations of >250 mg/kg also decreased the complexity and stability of the bacterial and fungal network. In addition, the metabolic pathways in the soils under different organic acids included 17 differential metabolites (DMs), which were involved in steroid hormone biosynthesis. The structural equation models (SEMs) revealed that plant growth, soil edaphic factors, and soil metabolites had direct or indirect influences on soil microbial communities under different organic acid conditions. Our results suggest that any phthalic or palmitic acid concentrations at concentrations >250 mg/kg are detrimental to multiple aspects of Sanqi cultivation, confirming the presence of Sanqi CCOs in Sanqi–pine agroforestry systems.

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“…Bermudagrass ( Cynodon dactylon ), a typical warm-season turf grass, is widely used in temperate and tropical regions of the world ( Wei et al, 2022a ). Turfgrass managers are using reclaimed water as an irrigation resource because of the decreasing availability and increasing cost of fresh water ( Xiang et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Salt-tolerant endophytic bacterium Enterobacter ludwigii B30 enhance bermudagrass growth under salt stress by modulating plant physiology and changing rhizosphere and root bacterial community

Wei

et al. 2022

Front. Plant Sci.

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Osmotic and ionic induced salt stress suppresses plant growth. In a previous study, Enterobacter ludwigii B30, isolated from Paspalum vaginatum, improved seed germination, root length, and seedling length of bermudagrass (Cynodon dactylon) under salt stress. In this study, E. ludwigii B30 application improved fresh weight and dry weight, carotenoid and chlorophyll levels, catalase and superoxide dismutase activities, indole acetic acid content and K+ concentration. Without E. ludwigii B30 treatment, bermudagrass under salt stress decreased malondialdehyde and proline content, Y(NO) and Y(NPQ), Na+ concentration, 1-aminocyclopropane-1-carboxylate, and abscisic acid content. After E. ludwigii B30 inoculation, bacterial community richness and diversity in the rhizosphere increased compared with the rhizosphere adjacent to roots under salt stress. Turf quality and carotenoid content were positively correlated with the incidence of the phyla Chloroflexi and Fibrobacteres in rhizosphere soil, and indole acetic acid (IAA) level was positively correlated with the phyla Actinobacteria and Chloroflexi in the roots. Our results suggest that E. ludwigii B30 can improve the ability of bermudagrass to accumulate biomass, adjust osmosis, improve photosynthetic efficiency and selectively absorb ions for reducing salt stress-induced injury, while changing the bacterial community structure of the rhizosphere and bermudagrass roots. They also provide a foundation for understanding how the bermudagrass rhizosphere and root microorganisms respond to endophyte inoculation.

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Changes in Soil Bacterial Community Structure in Bermudagrass Turf under Short-Term Traffic Stress

Cited by 3 publications

References 66 publications

Long-term Continuous-cropping System Altered the Microbial Communities and Nutrient Cycles in Karst Agroecosystems

Long-term Continuous-cropping System Altered the Microbial Communities and Nutrient Cycles in Karst Agroecosystems

Effects of Exogenous Organic Acids on the Soil Metabolites and Microbial Communities of Panax notoginseng from the Forest Understory

Salt-tolerant endophytic bacterium Enterobacter ludwigii B30 enhance bermudagrass growth under salt stress by modulating plant physiology and changing rhizosphere and root bacterial community

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