Explore the soil factors driving soil microbial community and structure in Songnen alkaline salt degraded grassland

Bai, Zhenyin; Jia, Aomei; Li, H. L.; Wang, Mingjun; Qu, Shanmin

doi:10.3389/fpls.2023.1110685

Cited by 9 publications

(4 citation statements)

References 84 publications

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“…Among them, the bacterial group was significantly positively correlated with soil pH (recall Fig 4A ), and a large number of dominant fungal flora was significantly negatively correlated with soil pH (recall Fig 4B). Our results are consistent with those of previous studies showing that soil pH is the most important driving factor affecting soil bacterial and fungal communities [65,66]. This study found that pH had a significant impact on the soil microbial community, but the dominant microbial flora, such as Acidobacteria, Gemmatimonadetes, Gemmatimonas, Actinobacteria, Kotlabaea, Fusarium, Zygomycota, and Mortierella, had different responses to pH.…”

Section: Influence Of Soil Environmental Factors On the Microbial Com...supporting

confidence: 92%

Response of soil microbial community diversity to continuous cucumber cropping in facilities along the Yellow River irrigation area

Huang

Dong

et al. 2023

PLoS ONE

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Cucumber is an important cash crop; however, continuous cropping obstacles readily occur within the intensive production processes of facility horticulture. This study aimed to determine the effects of continuous cropping on soil quality and the microbial community in the rhizosphere soil of cucumbers. Rhizosphere soil of cucumber planted continuously for 4, 8, and 12 years was investigated, and soil that was not continuously planted was used as the control. Soil physicochemical properties, enzyme activity, microbial diversity, and richness were determined. The results showed that with the increase in continuous cropping years (0, 4, 8, and 12 years), soil total salt content continuously increased, while the pH value significantly decreased. Compared with the control, soil organic matter, alkali-hydrolyzed nitrogen, available phosphorus, available potassium, and nitrate nitrogen contents increased significantly after 4 and 8 years of continuous cropping. Spearman correlation analysis showed that pH was negatively correlated with sucrase or sucrose and available phosphorus was positively correlated with alkaline phosphatase. Compared with the control, the diversity and abundance of bacterial and fungal communities in cucumber rhizosphere soil decreased after 4 and 12 years of continuous cropping. Continuous cropping led to a significant increase in the richness of the dominant phylum of cucumber rhizosphere soil. Principal coordinates analysis showed that, compared with the control, the soil microbial community structure was significantly separated after 4, 8, and 12 years of continuous cropping, and the microbial community structure was most similar after 4 and 8 years of continuous cropping. In addition, redundancy analysis showed that pH was the main driver of soil microbial dominance. In conclusion, continuous cropping of cucumber along the Yellow River irrigation area has led to the deterioration of soil nutrients and microbial communities in that region. This experiment provides a theoretical foundation for addressing the challenges associated with continuous cropping in cucumber cultivation.

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Section: Influence Of Soil Environmental Factors On the Microbial Com...supporting

confidence: 92%

Response of soil microbial community diversity to continuous cucumber cropping in facilities along the Yellow River irrigation area

Huang

Dong

et al. 2023

PLoS ONE

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“…Numerous studies have shown that soil-based physicochemical factors such as soil pH, moisture, and electrical conductivity have important effects on microbial communities ( Wu et al, 2020 ; Chen et al, 2021 ; Bai et al, 2023 ). Soil microbial communities may also be affected by nutrients such as C, N, P, and K ( Moro et al, 2014 ; Huang et al, 2016 ; Batista and Dixon, 2019 ; Ali et al, 2022 ), which regulate soil physicochemical properties and alter the inter-root microecological environment by influencing plant root secretions.…”

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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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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“…In saline-alkali soil, salt and alkali frequently coexist, presenting a dual stress, and as a response, numerous haloalkaliphiles have emerged, with distinctive structures and physiological adaptations, to thrive in such conditions [2,6]. In the past, both culture-dependent and independent microbial diversity analysis were carried out to understand the microbial community structure [2,7,8], and many novel halophilic and alkaliphilic species were also described from this area [8][9][10][11][12]. During microbial diversity analysis of such an ecosystem, strains HR 1-10 T and J-A-003 T were isolated.…”

Section: Introductionmentioning

confidence: 99%

Two Novel Alkaliphilic Species Isolated from Saline-Alkali Soil in China: Halalkalibacter flavus sp. nov., and Halalkalibacter lacteus sp. nov

Jin,

Sun,

Liu

et al. 2024

Microorganisms

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The degradation of farmland in China underscores the need for developing and utilizing saline-alkali soil. Soil health relies on microbial activity, which aids in the restoration of the land’s ecosystem, and hence it is important to understand microbial diversity. In the present study, two Gram-stain-positive strains HR 1-10T and J-A-003T were isolated from saline-alkali soil. Preliminary analysis suggested that these strains could be a novel species. Therefore, the taxonomic positions of these strains were evaluated using polyphasic analysis. Phylogenetic and 16S rRNA gene sequence analysis indicated that these strains should be assigned to the genus Halalkalibacter. Cell wall contained meso-2,6-diaminopimelic acid. The polar lipids present in both strains were diphosphatidyl-glycerol, phosphatidylglycerol, and an unidentified phospholipid. The major fatty acids (>10%) were anteiso-C15:0, C16:0 and iso-C15:0. Average nucleotide identity and digital DNA#x2013;DNA hybridization values were below the threshold values (95% and 70%, respectively) for species delineation. Based on the above results, the strains represent two novel species of the genus Halalkalibacter, for which the names Halalkalibacter flavus sp. nov., and Halalkalibacter lacteus sp. nov., are proposed. The type strains are HR 1-10T (=GDMCC 1.2946T = MCCC 1K08312T = JCM 36285T), and J-A-003T (=GDMCC 1.2949T = MCCC 1K08417T = JCM 36286T).

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Explore the soil factors driving soil microbial community and structure in Songnen alkaline salt degraded grassland

Cited by 9 publications

References 84 publications

Response of soil microbial community diversity to continuous cucumber cropping in facilities along the Yellow River irrigation area

Response of soil microbial community diversity to continuous cucumber cropping in facilities along the Yellow River irrigation area

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

Two Novel Alkaliphilic Species Isolated from Saline-Alkali Soil in China: Halalkalibacter flavus sp. nov., and Halalkalibacter lacteus sp. nov

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