Linking microbial community compositions to cotton nitrogen utilization along soil salinity gradients

Heng, Tong; Yang, Lili; Hermansen, Cecilie; Jonge, Lis Wollesen de; Zhang, Zhengyong; Wu, Baojian; Chen, Ji; Zhao, Li; Yu, Jiawen; He, Xu

doi:10.1016/j.fcr.2022.108697

Cited by 9 publications

(4 citation statements)

References 23 publications

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“…The results of our experiment showed that SAR significantly alters the makeup of bacterial community structure (Figure 9a). This is inconsistent with the results of Tong et al [79], who observed that soil salt concentration is the primary factor regulating soil microbial diversity and soil microbiome formation and that soil microbial diversity varied with soil salt contents. Dong et al [18] also revealed that bacterial abundance was not significantly impacted by salinity; however, it was identified as the primary factor responsible for the alteration in bacterial community composition, leading to a notable decline in microbial activity.…”

Section: Relationship Between Microorganisms and Soil Physicochemical...contrasting

confidence: 99%

Effect of Irrigation Water Salinity on Soil Characteristics and Microbial Communities in Cotton Fields in Southern Xinjiang, China

et al. 2023

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Irrigation with saline water is a possible solution to alleviate freshwater shortages. The long-term use of saline water for irrigation requires consideration of the influence of salt on the environmental conditions of the soil. The objective of this field study was to determine the effects of three continuous years of saline water irrigation on physiochemical properties and microbial communities in drip-irrigated cotton fields. The three total dissolved solid (TDS) levels of irrigation water treatments were (i) 1 g L−1 (fresh water, FWI), (ii) 3 g L−1 (brackish water, BWI), and (iii) 7 g L−1 (salt water, SWI). After three years, the electrical conductivity (EC), sodium adsorption ratio (SAR), and contents of K+, Na+, Mg2+, Cl−, and SO42− in the SWI treatment were significantly higher than those in the FWI and BWI treatments, but there were no significant differences in EC and K+ between the FWI and BWI treatments. BWI treatment significantly increased microbial biomass carbon (MBC), microbial biomass nitrogen (MBN), urease, and sucrase contents. The diversity and abundance of bacteria and fungi were not affected by saline water irrigation, but the microbial community structure was altered. Saline water irrigation resulted in an elevation in the bacterial abundance of the phylum Chloroflexi and a decline in Proteobacteria and Actinobacteria. For fungi, the abundance of the phylum Ascomycota in the BWI treatment was greater than that in the FWI and SWI treatments. Linear discriminant analysis effect size (NMDS) results indicated clear variation in the microbiota profiles between the FWI, BWI, and SWI treatments for bacteria. Regarding the fungal microbiota profiles, the BWI and SWI treatments had similar microbiota profiles but were different from the FWI treatment. The number of bacterial biomarkers gradually increased with increasing total dissolved solids of irrigation water, while the number of fungal biomarkers gradually decreased. Additionally, cotton yield was significantly and positively correlated with the observed species of fungi, while it was significantly and negatively correlated with EC. Redundancy analysis (RDA) showed that bacterial community structure was regulated by SAR and fungal community structure was regulated by soil salinity and bulk density (BD). Future research will need to look into how the structure of the microbial community and the associated functional microorganisms are gradually changing with increased irrigation frequency under saline irrigation, as well as explore and screen for advantageous functional microorganisms.

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Section: Relationship Between Microorganisms and Soil Physicochemical...contrasting

confidence: 99%

Effect of Irrigation Water Salinity on Soil Characteristics and Microbial Communities in Cotton Fields in Southern Xinjiang, China

et al. 2023

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“…In this study, vegetation restoration significantly increased bacterial abundance and diversity in soil erosion areas. Soil microbial abundance and diversity have a significant impact on the stability of ecosystems (Heng et al, 2022). Soil microorganisms are one of the most abundant and diverse biological communities in soil, and changes in their types and numbers can directly affect the ecological functions of soil.…”

Section: Discussionmentioning

confidence: 99%

“…In this study, vegetation restoration significantly increased bacterial abundance and diversity in soil erosion areas. Soil microbial abundance and diversity have a significant impact on the stability of ecosystems (Heng et al, 2022) et al, 2021). In addition, soil microbial diversity also plays a crucial role in soil resilience and the ability to suppress harmful organisms (Nunan, 2017;Xiao et al, 2018).…”

Section: Effect Of Vegetation Restoration On Soil Bacteria In the Soi...mentioning

confidence: 99%

“…Many studies have also found that the number, diversity, and community structure of soil bacteria are closely related to soil pH; water, organic carbon, and total nitrogen (TN) contents; and other factors (Heng et al, 2022; Wang et al, 2021). However, research has shown that the process of soil organic carbon (OC) accumulation may vary significantly depending on soil depth (Chen et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

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Depth‐dependent responses of the soil bacterial community under vegetation restoration in soil erosion areas of southern China

Wang,

Zhou,

Wang

et al. 2024

Land Degrad Dev

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Soil bacterial communities play a crucial role in the evaluation of soil ecosystem stability. Vegetation restoration is a key determinant of soil bacterial communities in areas affected by soil erosion. However, it remains unclear how the structure and diversity of soil bacterial communities vary with soil depth. In this study, we collected soil samples from 0 to 10 cm, 10 to 20 cm, 20 to 30 cm, and 30 to 40 cm depths in vegetation restoration sites located in typical soil erosion areas in China. We compared and analyzed the differences in bacterial community characteristics among different soil depths, using untreated areas as controls. Compared to the untreated areas, the abundance of soil bacteria in the 0–10 cm, 10–20 cm, and 20–30 cm depths of the vegetation restoration sites increased by 1.63, 1.04, and 1.29 times, respectively. Furthermore, vegetation restoration enhanced soil bacterial diversity at the 0–10 cm, 10–20 cm, and 20–30 cm depths. Soil organic carbon (OC) was the main explanatory factor (53.50%, p = 0.000) for the decrease in soil bacterial diversity with soil depth. Additionally, after vegetation restoration in soil erosion areas, the dominant bacterial community composition shifted from Chloroflexi to Actinobacteria at the 0–10 cm, 10–20 cm, and 20–30 cm depths and to Proteobacteria at the 30–40 cm depth. The differences in soil bacterial communities among different soil depths were primarily driven by soil total nitrogen (TN) content, which explained up to 34.5% of the variation. In conclusion, in the subsequent management of vegetation restoration sites, increasing OC and TN content can enhance soil bacterial diversity, improve bacterial community composition, and ultimately enhance the stability of soil ecosystems.

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Deep tillage inhibits microbial species interactions and exhibits contrasting roles in bacterial and fungal assembly

Sui

Wang

et al. 2023

Agriculture, Ecosystems & Environment

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Linking microbial community compositions to cotton nitrogen utilization along soil salinity gradients

Cited by 9 publications

References 23 publications

Effect of Irrigation Water Salinity on Soil Characteristics and Microbial Communities in Cotton Fields in Southern Xinjiang, China

Effect of Irrigation Water Salinity on Soil Characteristics and Microbial Communities in Cotton Fields in Southern Xinjiang, China

Depth‐dependent responses of the soil bacterial community under vegetation restoration in soil erosion areas of southern China

Deep tillage inhibits microbial species interactions and exhibits contrasting roles in bacterial and fungal assembly

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