Response of the microbial community to salt stress and its stratified effect in constructed wetlands

Wang, Xinyi; Zhu, Huiling; Yan, Baixing; Shutes, Brian; Bañuelos, Gary S.; Cheng, Rui

doi:10.1007/s11356-020-11937-z

Cited by 11 publications

(5 citation statements)

References 52 publications

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“…The relationship between soil microbial community and biochar has been reported in many studies ( Han et al, 2017 ; Yu et al, 2018 ; Li et al, 2019 ; Fan et al, 2020 ; Wang et al, 2021 ). The present study shows that the relationship between biochar and microbial community structure was distinct under saline conditions.…”

Section: Discussionmentioning

confidence: 95%

“…They play a pivotal role in soils through the mineralization of organic matter into plant nutrients. However, several biotic and abiotic factors affect soil microorganisms, microbial properties, community structure, and functions ( Szoboszlay et al, 2019 ; Kumar et al, 2020 ; Wang et al, 2021 ); salinity is one of them, which negatively influences them by soluble salts via two osmotic effect and specific ions (Na + and Cl – ) effects ( Yan et al, 2015 ). It was observed by Wang et al (2021) in their greenhouse experiment that the increasing level of salinity (15 and 30 mS cm –1 ) decreased the abundance of bacteria with denitrification function.…”

Section: Introductionmentioning

confidence: 99%

“…However, several biotic and abiotic factors affect soil microorganisms, microbial properties, community structure, and functions ( Szoboszlay et al, 2019 ; Kumar et al, 2020 ; Wang et al, 2021 ); salinity is one of them, which negatively influences them by soluble salts via two osmotic effect and specific ions (Na + and Cl – ) effects ( Yan et al, 2015 ). It was observed by Wang et al (2021) in their greenhouse experiment that the increasing level of salinity (15 and 30 mS cm –1 ) decreased the abundance of bacteria with denitrification function. In contrast, Wu et al (2021) revealed that the combined application of organic and mineral fertilizers increased the microbial biomass carbon under saline–alkaline soil.…”

Section: Introductionmentioning

confidence: 99%

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Maize (Zea mays L.) Seedlings Rhizosphere Microbial Community as Responded to Acidic Biochar Amendment Under Saline Conditions

et al. 2021

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Biochar has extensively been used for multiple purposes in agriculture, including improving soil microbial biomass. The current study aimed to investigate the effect of acidic biochar on maize seedlings’ rhizosphere bacterial abundance under salinity. There were seven treatments and three replicates in a controlled greenhouse coded as B0S1, B1S1, and B2S1 and B0S2, B1S2, and B2S2. CK is control (free of biochar and salt); B0, B1, and B2 are 0, 15, and 30 g biochar (kg soil)–1; and S1 and S2 are 2.5 and 5 g salt pot–1 that were amended, respectively. After harvesting the maize seedlings, the soil samples were collected and analyzed for soil microbial biomass, bacterial abundance, and diversity. The results revealed that relative abundance of Proteobacteria, Actinobacteria, and Chloroflexi increased on phylum level, whereas Actinomarinales, Alphaproteobacteria, and Streptomyces enhanced on genus level, respectively, in B2S1 and B2S2, when compared with CK and non-biochar amended soil under saline conditions. The relative abundance of Actinomarinales was positively correlated with total potassium (TK) and Gematimonadetes negatively correlated with total phosphorus (TP). Biochar addition slightly altered the Ace1, Chao1, and alpha diversity. Principal component analysis corresponded to the changes in soil bacterial community that were closely associated with biochar when compared with CK and salt-treated soils. In conclusion, acidic biochar showed an improved soil microbial community under salinity.

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Section: Discussionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Maize (Zea mays L.) Seedlings Rhizosphere Microbial Community as Responded to Acidic Biochar Amendment Under Saline Conditions

et al. 2021

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“…This bacterial genus has been recognized as a significant contributor to nutrient cycling in forest ecosystems [ 86 ], highlighting its potential as a valuable soil microorganism [ 87 , 88 ]. SH-PL14 , belonging to Planctomycetota and Rubinisphaeraceae , is distinguished by its ability to perform anaerobic oxidation of NH 4 + to N 2 , a process known as anammox [ 89 , 90 ]. Virgisporangium belongs to the Actinobacteriota , specifically within the Micromonosporaceae , and it is frequently found in tropical and subtropical soils [ 91 ].…”

Section: Discussionmentioning

confidence: 99%

Core Endophytic Bacteria and Their Roles in the Coralloid Roots of Cultivated Cycas revoluta (Cycadaceae)

Liu,

Xu,

Wang

et al. 2023

Microorganisms

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As a gymnosperm group, cycads are known for their ancient origin and specialized coralloid root, which can be used as an ideal system to explore the interaction between host and associated microorganisms. Previous studies have revealed that some nitrogen-fixing cyanobacteria contribute greatly to the composition of the endophytic microorganisms in cycad coralloid roots. However, the roles of host and environment in shaping the composition of endophytic bacteria during the recruitment process remain unclear. Here, we determined the diversity, composition, and function prediction of endophytic bacteria from the coralloid roots of a widely cultivated cycad, Cycas revoluta Thunb. Using next-generation sequencing techniques, we comprehensively investigated the diversity and community structure of the bacteria in coralloid roots and bulk soils sampled from 11 sites in China, aiming to explore the variations in core endophytic bacteria and to predict their potential functions. We found a higher microbe diversity in bulk soils than in coralloid roots. Meanwhile, there was no significant difference in the diversity and composition of endophytic bacteria across different localities, and the same result was found after removing cyanobacteria. Desmonostoc was the most dominant in coralloid roots, followed by Nostoc, yet these two cyanobacteria were not shared by all samples. Rhodococcus, Edaphobacter, Niastella, Nordella, SH-PL14, and Virgisporangium were defined as the core microorganisms in coralloid roots. A function prediction analysis revealed that endophytic bacteria majorly participated in the plant uptake of phosphorus and metal ions and in disease resistance. These results indicate that the community composition of the bacteria in coralloid roots is affected by both the host and environment, in which the host is more decisive. Despite the very small proportion of core microbes, their interactions are significant and likely contribute to functions related to host survival. Our study contributes to an understanding of microbial diversity and composition in cycads, and it expands the knowledge on the association between hosts and symbiotic microbes.

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“…Aminobacter , an ED concentrate indicator genus, can form root nodules and use NH 4 + , NO 3 − , and urea as an N source [ 88 , 89 ]. Another ED concentrate indicator genus, SH-PL14, is a member of the Planctomycetales, is characterized by anaerobic oxidation of NH 4 + to N 2 (anammox) [ 90 , 91 ]. Flectobacillus , a third ED concentrate indicator genus, has been detected in rice paddy rhizosphere soil and can solubilize phosphate and potassium [ 92 , 93 , 94 ].…”

Section: Discussionmentioning

confidence: 99%

Root-Associated Bacterial Community Shifts in Hydroponic Lettuce Cultured with Urine-Derived Fertilizer

et al. 2021

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Recovery of nutrients from source-separated urine can truncate our dependency on synthetic fertilizers, contributing to more sustainable food production. Urine-derived fertilizers have been successfully applied in soilless cultures. However, little is known about the adaptation of the plant to the nutrient environment. This study investigated the impact of urine-derived fertilizers on plant performance and the root-associated bacterial community of hydroponically grown lettuce (Lactuca sativa L.). Shoot biomass, chlorophyll, phenolic, antioxidant, and mineral content were associated with shifts in the root-associated bacterial community structures. K-struvite, a high-performing urine-derived fertilizer, supported root-associated bacterial communities that overlapped most strongly with control NPK fertilizer. Contrarily, lettuce performed poorly with electrodialysis (ED) concentrate and hydrolyzed urine and hosted distinct root-associated bacterial communities. Comparing the identified operational taxonomic units (OTU) across the fertilizer conditions revealed strong correlations between specific bacterial genera and the plant physiological characteristics, salinity, and NO3-/NH4+ ratio. The root-associated bacterial community networks of K-struvite and NPK control fertilized plants displayed fewer nodes and node edges, suggesting that good plant growth performance does not require highly complex ecological interactions in hydroponic growth conditions.

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Response of the microbial community to salt stress and its stratified effect in constructed wetlands

Cited by 11 publications

References 52 publications

Maize (Zea mays L.) Seedlings Rhizosphere Microbial Community as Responded to Acidic Biochar Amendment Under Saline Conditions

Maize (Zea mays L.) Seedlings Rhizosphere Microbial Community as Responded to Acidic Biochar Amendment Under Saline Conditions

Core Endophytic Bacteria and Their Roles in the Coralloid Roots of Cultivated Cycas revoluta (Cycadaceae)

Root-Associated Bacterial Community Shifts in Hydroponic Lettuce Cultured with Urine-Derived Fertilizer

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