Long-Term Amelioration Practices Reshape the Soil Microbiome in a Coastal Saline Soil and Alter the Richness and Vertical Distribution Differently Among Bacterial, Archaeal, and Fungal Communities

Sun, Run‐Cang; Wang, Xiaogai; Tian, Yinping; Guo, Kai; Feng, Xiaohui; Sun, Hang; Liu, Xiaojing; Liu, Binbin

doi:10.3389/fmicb.2021.768203

Cited by 15 publications

(21 citation statements)

References 104 publications

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“…PCRs were performed in a 25-μl system containing 12.5 μl PCR premix (Ex Taq TM ; Takara, Shiga, Japan), 0.5 μl (10 μm) of the forward and reverse primers (final concentration of each primer 0.2 pmol μl −1 ), 0.5 μl DNA template (20 ng), and 11 μl sterile double-distilled water. Thermocycle conditions comprised an initial denaturation at 94°C for 10 min, 30 cycles of denaturation at 94°C for 30 s, annealing at 55°C/56°C (16S rRNA/ITS) for 45 s, and extension at 72°C for 1 min, followed by a final extension at 72°C for 10 min ( Sun et al, 2020 , 2022 ).…”

Section: Methodsmentioning

confidence: 99%

“…Bioinformatic analysis was performed according to previous studies with some modifications ( Shi et al, 2019 ; Sun et al, 2022 ). VSEARCH (version 2.21.1) was used for the bioinformatic analysis of high-throughput sequencing data ( Rognes et al, 2016 ).…”

Section: Methodsmentioning

confidence: 99%

“…Statistical analysis and figure drawing were performed using R (version 4.0.2) following our previous study ( Sun et al, 2021 , 2022 ). The Kruskal–Wallis rank sum test ( Corder and Foreman, 2009 ) was used for the significance test of difference of variables between −P and +P.…”

Section: Methodsmentioning

confidence: 99%

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Changes in phosphorus mobilization and community assembly of bacterial and fungal communities in rice rhizosphere under phosphate deficiency

Sun

Zhang

Liu³

et al. 2022

Front. Microbiol.

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Rhizosphere microorganisms are closely associated with phosphorus (P) uptake in plants and are considered potential agents to mitigate P shortage. However, the mechanisms of rhizospheric microbial community assembly under P deficiency have yet to be elucidated. In this study, bacterial and fungal communities in rice rhizosphere and their P mobilization potential under high (+P) and low (−P) concentrations of P were investigated. Bacterial and fungal community structures were significantly different between −P and +P treatments. And both bacterial and fungal P-mobilizing taxa were enriched in-P treatment; however, the proportion of P-mobilizing agents in the fungal community was markedly greater than that in the bacterial community. A culture experiment confirmed that microbial phosphate solubilizing capacity was significantly higher in −P treatment compared with that in +P treatment. −P treatment lowered bacterial diversity in rice rhizosphere but increased fungal diversity. Further analysis demonstrated that the contribution of deterministic processes in governing bacterial community assembly was strengthened under P deficiency but was largely weakened in shaping the fungal community. These results highlighted that enriching P-mobilizing microbes in the rhizosphere is a vital way for rice to cope with P deficiency, and that fungi contribute considerably to P mobilization in rice rhizosphere. Findings from the study provide novel insights into the assembly of the rhizosphere microbiome under P deficiency and this will facilitate the development of rhizosphere microbial regulation strategies to increase nutrient uptake in plants.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Changes in phosphorus mobilization and community assembly of bacterial and fungal communities in rice rhizosphere under phosphate deficiency

Sun

Zhang

Liu³

et al. 2022

Front. Microbiol.

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“…Adoption of traditional amelioration practices on saltaffected coastal lands not only reducesthe direct impact of osmotic stress on crops, but also exerts a positive action on soil biological fertility by reverting the reduction in the biodiversity of the soil microbiome (Sun et al, 2022).…”

Section: Salinization Of Coastal Agricultural Landsmentioning

confidence: 99%

Impacts of salinization caused by sea level rise on the biological processes of coastal soils - A review

Mazhar

Pellegrini

Contin

et al. 2022

Front. Environ. Sci.

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Soil salinization caused by sea level rise threatens coastal agricultural soils and geochemically important wetlands worldwide. The aim of this review is to outline expected changes in soil biological activity by discussing the combined effects of salt stress and flooding on plants productivity and soil microbial communities, which determine consequences on fluxes of C, N and P. Finally, it outlines the expected repercussions on greenhouse gases emissions. The prediction of outcomes is made difficult by the concomitant and sometimes contrasting actions of flooding and seawater intrusion on partly acclimated and non-acclimated environments. Non-salt acclimated plants suffer from osmotic stress, but also from reduced O2 solubility. Microbial biomass declines with increasing salinity and microbial communities shift in composition. Large concentrations of Cl− inhibit nitrification, but salinity stimulates N2O fluxes. Impacts on C mineralisation rates is variable but enhanced by the larger availability of terminal electron acceptors. The reduction of Fe combined with that of SO42− could enhance P mobility. Salinization affects methanogenesis which is constrained in favour of SO42− reduction. Consequences are largely site specific and difficult to predict because of the complex network of processes occurring simultaneously in different compartments (i.e., soil, microbiome, vegetation). The distinction between short and long term effects is also important. A reliable prediction of outcomes at a planetary scale will only result from more precise inventories and monitoring of areas displaying specific similarities and from the implementation from these well-defined data sets of specifically devised models whose results can be finally combined on a weighted basis.

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“…However, seed germination and crop seedling formation, establishment, and growth are greatly impaired due to the high degree of salinization, nutrient de ciency, low-fertilizer utilization , and poor soil texture and structural stability of mud at soils and the seasonal salt regression and frequent salt accumulation (Dong et al 2020;Odeh and Onus 2008). In some cases, serious osmotic stress and ion toxicity even occur (Sun et al 2022). Therefore, saline-alkaline soil is di cult to use directly because of the restrictive factors in agricultural production (Paul and Lade 2014; Ranasinghe and Piyadasa 2020).…”

Section: Introductionmentioning

confidence: 99%

Biomass composite with exogenous organic acid addition supports the growth of sweet sorghum (Sorghum bicolor 'Dochna') by reducing salinity and increasing nutrient level in coastal saline–alkaline soil

Yang¹,

Sun

Liu³

et al. 2022

Preprint

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Purpose In coastal saline lands, organic matter is scarce and saline stress is high. Exploring the promotion effect of intervention with organic acid from biological materials on soil improvement and thus forage output and determining the related mechanism. Methods Three exogenous organic acids (humic acid, fulvic acid, and citric acid) were combined with four kinds of biomass materials (cottonseed hull, cow manure, grass charcoal, and pine needle) and applied to about 0.3% of medium-salt mudflat soil. The salinity and nutrient dynamics of the soil and the growth and physiological differences of sweet sorghum at the seedling, elongation, and heading stages were observed under different treatments to screen for efficient combinations and analyze the intrinsic causes and influencing mechanisms. Results The soil salinity, nutrient dynamics, and forage grass biological yield during sweet sorghum cultivation in saline soils differed significantly (p < 0.05) depending on the type of organic acid–biomass composite applied. Citric acid–pine needle composite substantially reduced the soil salinity and increased the soil nutrient content at the seedling stage and improved the root vigor and photosynthesis of sweet sorghum by increasing its stress tolerance, allowing plant morphological restructuring for a high biological yield. The improvement effect of fulvic acid–pine needle or fulvic acid–cow manure composite was manifested at the elongation and heading stages. Conclusions Citric acid–pine needle composite promoted the growth of saline sweet sorghum seedlings, and the effect of fulvic acid–pine needle composite lasted until the middle and late stages.

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Long-Term Amelioration Practices Reshape the Soil Microbiome in a Coastal Saline Soil and Alter the Richness and Vertical Distribution Differently Among Bacterial, Archaeal, and Fungal Communities

Cited by 15 publications

References 104 publications

Changes in phosphorus mobilization and community assembly of bacterial and fungal communities in rice rhizosphere under phosphate deficiency

Changes in phosphorus mobilization and community assembly of bacterial and fungal communities in rice rhizosphere under phosphate deficiency

Impacts of salinization caused by sea level rise on the biological processes of coastal soils - A review

Biomass composite with exogenous organic acid addition supports the growth of sweet sorghum (Sorghum bicolor 'Dochna') by reducing salinity and increasing nutrient level in coastal saline–alkaline soil

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