The protective role of cyanobacteria on soil stability in two Aridisols in northeastern Iran

Sepehr, Adel; Hassanzadeh, Mahvan; Rodríguez‐Caballero, Emilio

doi:10.1016/j.geodrs.2018.e00201

Cited by 32 publications

(18 citation statements)

References 39 publications

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“…and thinner at the end of the strand. Sepehr et al [36] have previously reported the presence of these two species in arid soils in northeastern Iran. Besides, the SEM images of cyanobacteria after 6 months inoculation into soil samples revealed that cyanobacteria developed a network of filaments among soil particles (Figure 1c and d).…”

Section: Morphology Of Cyanobacteriamentioning

confidence: 90%

“…Cyanobacteria were purified using agar culture method [35]. The morphological characteristics of the isolated native cyanobacteria were determined by observing under the light microscope (magnifications 400-1000 x (Olympus CH-2)) and Scanning Electron Microscope (SEM) (Leo-Germany 1450VP) in conjunction with the taxonomic references [36][37][38][39].…”

Section: Isolation Of Cyanobacteriamentioning

confidence: 99%

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Bioremediation of Heavy Metal Contaminated Soils Originated from Iron Ore Mine by Bio-augmentation with Native Cyanobacteria

Atigh

Heidari

Sepehr

et al. 2020

IJEE

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The soil in the Sangan iron-mining region in the east of Iran is contaminated with a high concentration of heavy metals, especially iron. The release of these pollutants into environment results in the transfer and accumulation of iron through the food chains, hence a reasonable solution is required to restore it. Bioaugmentation is an environmental friendly option to reduce the hazard effects of heavy metal in the contaminated soil. In this study, the consortia of two indigenous cyanobacteria isolated from soil of Sangan iron mining and used to bioremediate soil contaminated with iron, chromium, copper, lead, and nickel. The experiments were carried out by three treatment methods, including control soil, surface soil sprayed with cyanobacteria, and soil mixed with cyanobacteria for six months under laboratory condition. The scanning electron microscope showed the development of a network of filaments of the inoculated cyanobacteria (Oscillatoria sp. and Leptolyngbya sp.) with soil particles in both treatments. Bio-augmentation of the soil increased initial nitrogen content from 406 mg/kg in control to 664 mg/kg in soil mixed with cyanobacteria and 710 mg/kg in soil sprayed with cyanobacteria. Cyanobacteria inoculation decreased the available concentration of lead and nickel. The nonavailable heavy metal of soil in sample sprayed with cyanobacteria was in decreasing order: Cr > Fe > Ni > As > Pb > Cu. The maximum metal removal efficiency was 32%. In soil mixed with cyanobacteria increased in the root and hypocotyl lengths of radish and lettuce was observed compared to that in the control soil, indicated in the improvement of soil quality after bioremediation.

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Section: Morphology Of Cyanobacteriamentioning

confidence: 90%

Section: Isolation Of Cyanobacteriamentioning

confidence: 99%

Bioremediation of Heavy Metal Contaminated Soils Originated from Iron Ore Mine by Bio-augmentation with Native Cyanobacteria

Atigh

Heidari

Sepehr

et al. 2020

IJEE

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“…Firstly, algal biomass, which can be degraded by the soil microorganisms, serves as a slow‐release fertilizer to continuously provide nutrients to plants 27,28 . Secondly, living algal cells could be added into soil to regulate the microbial community, improve soil fertility, and control soil moisture 14,29 . Thirdly, algae extract containing amino acids and minerals can be exploited as a liquid bio‐fertilizer that is spread on the surface of plant leaves 10 .…”

Section: Technologies For the Production And Application Of Algal Biomentioning

confidence: 99%

“…27,28 Secondly, living algal cells could be added into soil to regulate the microbial community, improve soil fertility, and control soil moisture. 14,29 Thirdly, algae extract containing amino acids and minerals can be exploited as a liquid bio-fertilizer that is spread on the surface of plant leaves. 10 Although slow-release bio-fertilizer, nitrogen-fixing cyanobacteria, and liquid bio-fertilizer are different in their production processes and action mechanisms, all of them can have positive effects on plant growth and soil quality ( Table 2).…”

Section: Wileyonlinelibrarycom/jctbmentioning

confidence: 99%

Emerging technologies of algae‐based wastewater remediation for bio‐fertilizer production: a promising pathway to sustainable agriculture

Zou¹,

Zeng

et al. 2020

J of Chemical Tech & Biotech

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Soil degradation, overuse of chemical fertilizer, and biodiversity loss are serious problems challenging the sustainable development of modern agriculture. In recent years, owing to the advantages of algae biotechnology in nutrients recovery and soil improvement, the integration of algae‐based wastewater remediation and algal bio‐fertilizer production is emerging into the limelight. In this work, we emphasize on the progresses achieved in the fields of biomass production by algae cultivation in wastewater and application of algal bio‐fertilizers. Particularly, three types of algal bio‐fertilizers, including slow‐release bio‐fertilizer, nitrogen‐fixing cyanobacteria, and liquid bio‐fertilizer, widely evaluated and utilized in agriculture are introduced. To prevent the overly optimistic prediction of algal bio‐fertilizer in a real‐world application, we point out the challenges and technical defects, such as presence of new pollution factors in wastewater, high cost of algal biomass, contamination of algal biomass in wastewater, low productivity of algae and valuable components, high water consumption, and potential threats of cyanobacteria to the environment, that prevent the concept of integrating algae‐based wastewater remediation and algal bio‐fertilizer production from becoming a reality. Based on our knowledge and experience, potential solutions to the aforementioned problems are discussed in depth. It is expected that the emerging technologies of algae‐based wastewater remediation for bio‐fertilizer production will bring human beings into a new era of environmentally‐friendly, high‐yield, and resource‐recycling agriculture. © 2020 Society of Chemical Industry (SCI)

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“…The potential of cyanobacteria in erosion-prone soil restoration has been demonstrated through improved carbon and nitrogen fixation [64,65], runoff inhibition [66] and aggregate formation through secreted EPS [65]. This ability extends to desert ecosystems where cyanobacteria from biocrusts effectively improve nutrient accumulation and promote edaphic conditions [67].…”

Section: Cyanobacteria Applications In Ecosystem Restorationmentioning

confidence: 99%

Cyanobacteria as a Nature-Based Biotechnological Tool for Restoring Salt-Affected Soils

et al. 2020

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Soil salinization poses an important threat to terrestrial ecosystems and is expected to increase as a consequence of climate change and anthropogenic pressures. Conventional methods such as salt-leaching or application of soil amendments, or nature-based solutions (NBSs) such as phytoremediation, have been widely adopted with contrasting results. The use of cyanobacteria for improving soil conditions has emerged as a novel biotechnological tool for ecosystem restoration due to the unique features of these organisms, e.g., ability to fix carbon and nitrogen and promote soil stabilisation. Cyanobacteria distribute over a wide range of salt concentrations and several species can adapt to fluctuating salinity conditions. Their application in agricultural saline soil remediation has been demonstrated, mostly in laboratory studies, but there is a lack of research regarding their use in natural ecosystems restoration. In this article, we provide an overview of the current knowledge on cyanobacteria in the context of ecosystem restoration. Examples of the application of cyanobacteria in alleviating salt-stress in plants and soils are presented. Furthermore, we acknowledge gaps regarding the extensive application of cyanobacteria in salt-affected soils remediation and discuss the challenges of NBSs in salt-affected soils restoration.

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The protective role of cyanobacteria on soil stability in two Aridisols in northeastern Iran

Cited by 32 publications

References 39 publications

Bioremediation of Heavy Metal Contaminated Soils Originated from Iron Ore Mine by Bio-augmentation with Native Cyanobacteria

Bioremediation of Heavy Metal Contaminated Soils Originated from Iron Ore Mine by Bio-augmentation with Native Cyanobacteria

Emerging technologies of algae‐based wastewater remediation for bio‐fertilizer production: a promising pathway to sustainable agriculture

Cyanobacteria as a Nature-Based Biotechnological Tool for Restoring Salt-Affected Soils

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