Vertical-scale spatial influence of radial oxygen loss on rhizosphere microbial community in constructed wetland

Bai, Shunwen; Chen, Juntong; Guo, Mengran; Ren, Nan-Qi; Zhao, Xinyue

doi:10.1016/j.envint.2022.107690

Cited by 45 publications

(9 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The presence of well-developed aerenchyma within the roots of S. alterni ora provides an oxygen transfer channel for root respiration in anaerobic soil (Koop-Jakobsen et al 2017). ROL not only provided a favorable oxidative state microenvironment for aerobic microorganisms (Bai et al 2023) but also changed the morphology and bio effectiveness of elements in the microenvironment of rhizosphere (Peralta Ogorek et al 2023), forming ferromanganese oxide plaque on the surface of the root and reducing toxic substances and heavy metals in the soil (Ma et al 2018). The roots of S. alterni ora oxidized sul de in the root zone to protect itself (Table 1), while the high content of sul de in the bulk soil continues to be harmful to other species with lower toxicity threshold (Lamers et We found that the roots alter the sulfur cycle by affecting the distribution of Fe and oxygen and further play a signi cant role in the invasion of the S. alterni ora community into the S. mariqueter community.…”

Section: Discussionmentioning

confidence: 99%

Soil sulfide accumulation and stress mitigation of S. alterniflora by radial oxygen loss and iron enrichment in rhizosphere

Zhao¹,

Hua²,

Cheng³

et al. 2023

Preprint

View full text Add to dashboard Cite

Background and Aims Spartina alterniflora (S. alterniflora) is an invasive plant widely distributed in coastal areas of China, and the invasion has caused the accumulation of soil sulfur contents, while sulfide can accumulate to phytotoxic levels. It has been verified that S. alterniflora is more tolerant to sulfide than Scirpus mariqueter (S. mariqueter). Therefore, sulfide may play an important role in invading S. alterniflora, but the specific mechanism awaits further investigation. Methods Through experiments with situ rhizoboxes in the Jiuduansha Wetland, we conducted field investigations to analyze soil sulfur (sulfate and sulfide) contents, iron (Fe(II) and Fe(III)) contents, and physicochemical properties. Lab-scale experiment with high-resolution (HR) diffusive gradients in thin films (DGT) was conducted to investigate the distribution of oxygen, sulfide, and iron concentrations in the microenvironment of two species. Meanwhile, the effect of roots on soil bacterial communities and sulfur cycle-related microorganisms was investigated. Results The soil sulfur (sulfide and sulfate) contents in S. alterniflora were higher than in S. mariqueter. In the rhizoboxes of S. alterniflora, the contents of soil sulfide were significantly lower in the rhizosphere, while oxygen contents in the rhizosphere were higher than in bulk soil. The iron contents in S. alterniflora were significantly higher than in S. mariqueter, especially the Fe(III) contents were higher in the rhizosphere. Conclusion The S. alterniflora may gain an advantage in the invasion process by oxidizing the sulfide through radial oxygen loss and by enriching iron to mitigate high concentrations of sulfide in the rhizosphere.

show abstract

Section: Discussionmentioning

confidence: 99%

Soil sulfide accumulation and stress mitigation of S. alterniflora by radial oxygen loss and iron enrichment in rhizosphere

Zhao¹,

Hua²,

Cheng³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Based on this, microalgae-based microbial fuel cells present an environmentally friendly and sustainable approach; however, the technology still confronts the challenges such as high installation costs and energy consumption associated with microalgae acquisition. CWs harness the combined forces of physical, chemical, and biological processes, utilizing substrates, plants, and microorganisms to efficiently purify swine wastewater [76,103,104]. CWs are widely adopted due to their advantages of exceptional treatment efficiency, high shock load resistance, low investment requirement, and high ecological and landscape value (Figure 6) [105].…”

Section: Coupling Microbial Fuel Cells Techniquementioning

confidence: 99%

Resource and Energy Utilization of Swine Wastewater Treatment: Recent Progress and Future Directions

Meng,

Jin,

Feng

et al. 2023

Separations

Self Cite

View full text Add to dashboard Cite

Livestock and poultry farming, as a crucial component of agricultural production, poses a substantial threat to the ecological environment due to the discharge of wastewater. In recent years, researchers have proposed various resource treatment technologies for livestock and poultry breeding wastewater. However, a comprehensive discussion regarding the limitations and avenues for optimizing resource utilization technologies for livestock and poultry farming wastewater treatment is notably absent in existing literature. This paper takes swine wastewater as an illustrative case and undertakes a review of the advantages, disadvantages, and optimization directions of resource treatment technologies, including physical and chemical technology, microbial metabolism, microbial electrochemistry, constructed wetlands, and microalgae-based techniques. Based on mass balance, the recovery rates of various treatment technologies are estimated, and it was found that microbial electrochemistry and constructed wetland techniques may become the mainstream for resource utilization in the future. Furthermore, this paper emphasizes that in addition to resource efficiency, the optimization of resource utilization technologies for swine wastewater should also focus on the following aspects: (1) striking a balance between environmental impact and economic benefits; (2) reducing the cost of resource and energy utilization; and (3) safeguarding environmental and ecological security.

show abstract

“…Constructed wetlands have been proven to be an efficient solution for wetland restoration: under this approach, a simulated ecosystem for the removal of pollutants is purposefully created ( Guo et al, 2021 ; Li H. et al, 2021 ; Zhao et al, 2022 ). The removal of pollutants depends on complex interactions between plants and microorganisms ( Bai et al, 2023 ). Microorganisms can convert organic matter into constituent substances and energy, thereby playing a core role in adsorbing and degrading pollutants ( Kulikova and Perminova, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Assembly processes of rhizosphere and phyllosphere bacterial communities in constructed wetlands created via transformation of rice paddies

Deng,

Liu,

Tian

et al. 2024

Front. Microbiol.

View full text Add to dashboard Cite

Constructed wetlands are an efficient and cost-effective method of restoring degraded wetlands, in which the microorganisms present make a significant contribution to the ecosystem. In this study, we comprehensively investigated the patterns of diversity and assembly processes of 7 types of constructed wetlands at the rhizosphere and phyllosphere levels. The results showed that the rhizosphere communities of the constructed wetlands exhibited a more balanced structure than that of paddy fields, and 5 types of constructed wetland demonstrated higher potential diversity than that of paddy fields. However, the opposite trend was observed for the phyllosphere communities. Analysis of mean nearest taxon difference indicated that both deterministic and stochastic processes affected the establishment of the rhizosphere and phyllosphere communities, and stochastic processes may have had a larger effect. An iCAMP model showed that dispersal limitation was the most important factor (67% relative contribution) in the rhizosphere community, while drift was the most important (47% relative contribution) in the phyllosphere community. Mantel tests suggested that sucrase, average height, top height, total biomass, belowground biomass, maximum water-holding capacity, and capillary porosity were significantly correlated with processes in the rhizosphere community, whereas factors such as the deterministic process, average height, top height, and SOC were significantly correlated with deterministic processes in the phyllosphere community. Our results can assist in the evaluation of artificial restorations, and can provide understanding of the ecological processes of microbial communities, as well as new insights into the manipulation of microorganisms in polluted wetland ecosystems.

show abstract

Vertical-scale spatial influence of radial oxygen loss on rhizosphere microbial community in constructed wetland

Cited by 45 publications

References 49 publications

Soil sulfide accumulation and stress mitigation of S. alterniflora by radial oxygen loss and iron enrichment in rhizosphere

Soil sulfide accumulation and stress mitigation of S. alterniflora by radial oxygen loss and iron enrichment in rhizosphere

Resource and Energy Utilization of Swine Wastewater Treatment: Recent Progress and Future Directions

Assembly processes of rhizosphere and phyllosphere bacterial communities in constructed wetlands created via transformation of rice paddies

Contact Info

Product

Resources

About