System metabolic engineering of exopolysaccharide-producing cyanobacteria in soil rehabilitation by inducing the formation of biological soil crusts: A review

Tiwari, Onkar Nath; Bhunia, Biswanath; Mondal, Abhijit; Gopikrishna, K.; Indrama, Thingujam

doi:10.1016/j.jclepro.2018.11.188

Cited by 35 publications

(12 citation statements)

References 79 publications

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“…However, it contrasts with other studies: Cyanobacteria accounted for 50% of the total flora in the current study, whereas previous studies reported that the Proteus phylum accounted for the largest proportion, with Cyanophyta only accounting for about 1%–10% 7 , 8 . Cyanobacteria plays an active role in sewage treatment and water self‐purification, and they can be used to improve the soil environment and produce extracellular pesticides 49 . Additionally, there is no evidence that Cyanobacteria are causative pathogens of limb infections after injuries in seawater.…”

Section: Discussionmentioning

confidence: 99%

Analysis of Community Composition of Bacterioplankton in Changle Seawater in China by Illumina Sequencing Combined with Bacteria Culture

Wei

Zheng

Lv³

et al. 2021

Orthopaedic Surgery

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Objectives To characterize the abundance and relative composition of seawater bacterioplankton communities in Changle city using Illumina MiSeq sequencing and bacterial culture techniques. Methods Seawater samples and physicochemical factors were collected from the coastal zone of Changle city on 8 September 2019. Nineteen filter membranes were obtained after using a suction filtration system. We randomly selected eight samples for total seawater bacteria (SWDNA group) sequencing and three samples for active seawater bacteria (SWRNA group) sequencing by Illumina MiSeq. The remaining eight samples were used for bacterial culture and identification. Alpha diversity including species coverage (Coverage), species diversity (Shannon–Wiener and Simpson index), richness estimators (Chao1), and abundance‐based richness estimation (ACE) were calculated to assess biodiversity of seawater bacterioplankton. Beta diversity was used to evaluate the differences between samples. The species abundance differences were determined using the Wilcoxon rank‐sum test. Statistical analyses were performed in R environment. Results The Alpha diversity in the SWDNA group in each index was ACE 3206.99, Chao1 2615.12, Shannon 4.64, Simpson 0.05, and coverage 0.97; the corresponding index was ACE 1199.55, Chao1 934.75, Shannon 3.49, Simpson 0.09, and coverage 0.99. The sequencing results of seawater bacterial genes in the coastal waters of Changle city showed that the phyla of high‐abundance bacteria of both the SWDNA and SWRNA groups included Cyanobacteria, Proteobacteria, and Bacteroidetes. The main classes included Oxyphotobacteria, Alphaproteobacteria, and Gammaproteobacteria. The main genera included Synechococcus CC9902, Chloroplast, and Cyanobium_PCC‐6307. Beta diversity analysis showed a significant difference between the SWDNA and SWRNA groups (P < 0.05). The species abundance differences between SWDNA and SWRNA groups after Wilcoxon rank‐sum test showed that, at the phylum level, Actinomycetes was more abundant in SWDNA group (9.17 vs 1.02%, P < 0.05); at the class level, Actinomycetes (δ‐ Proteus) was more abundant in SWDNA group (9.47% vs 1.01%, P < 0.05); and at the genus level, Chloroplast was more abundant in SWRNA group (13.07% vs 44.57%, P < 0.05). Nine species and 53 colonies were found by bacterial culture: 20 strains of Vibrio (37.74%), 22 strains of Enterobacter (41.51%), and 11 strains of non‐fermentative bacteria (20.75%). Conclusion Illumi MiSeq sequencing of seawater bacteria revealed that the total bacterial community groups and the active bacterial community groups mainly comprised Cyanobacteria, Proteobacteria, and Bacteroides at the phylum level; Oxyphotobacteria, α‐Proteobacteria, and γ‐Proteobacteria at the class level; with Synechococcus_CC9902, Chloroplast, and Cyanobium_PCC‐6307 comprising the predominant genera. Exploring the composition and differences of seawater bacteria assists understanding regarding the biodiversity and the infections related to seawater bacteria along the coast of the Changle, provide...

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Section: Discussionmentioning

confidence: 99%

Analysis of Community Composition of Bacterioplankton in Changle Seawater in China by Illumina Sequencing Combined with Bacteria Culture

Wei

Zheng

Lv³

et al. 2021

Orthopaedic Surgery

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“…This application reduces water infiltration into the soil by inducing surface sealing and clogging of the pores. Therefore, there is an increase in the availability of nutrients and improvement in the soil's aggregate stability [86,87]. In addition, the different biological activities presented by EPS, such as antiviral and antibacterial [88], antioxidant [89], anti-inflammatory [90], immunomodulatory [91], and anticancer, indicate the potential of these compounds for application in various sectors such as food, cosmetics, pharmaceuticals, and biomaterials [14,20].…”

Section: Other Applications Of Microalgal Epsmentioning

confidence: 99%

Recent Advances of Microalgae Exopolysaccharides for Application as Bioflocculants

et al. 2022

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Microalgae are used in flocculation processes because biopolymers are released into the culture medium. Microalgal cell growth under specific conditions (temperature, pH, luminosity, nutrients, and salinity) provides the production and release of exopolysaccharides (EPS). These biopolymers can be recovered from the medium for application as bioflocculants or used directly in cultivation as microalgae autoflocculants. The optimization of nutritional parameters, the control of process conditions, and the possibility of scaling up allow the production and industrial application of microalgal EPS. Therefore, this review addresses the potential use of EPS produced by microalgae in bioflocculation. The recovery, determination, and quantification techniques for these biopolymers are also addressed. Moreover, other technological applications of EPS are highlighted.

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“…Moreover, cyanobacteria are more suitable as soil biological indicators for land use and have the potential to improve soil health and fertility (Chamizo et al, 2018) (Table 1). Green algae and cyanobacteria produce abundant organic matter during climate change (Grzesik and Romanowska, 2015), increase soil organic carbon by releasing exopolysaccharides (EPSs) during algal cell decomposition, and become a readily available form of carbon, required for the growth of soil microbiota (Tiwari et al, 2019).…”

Section: Microalgae Cultivation Improves Soil Ecological Healthmentioning

confidence: 99%

Potential applications for multifunctional microalgae in soil improvement

Song

Bo²,

Feng³

et al. 2022

Front. Environ. Sci.

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Soil is the basis of agricultural production, and the quality of soil directly affects crop quality and yield. Microalgae can carry out photosynthesis, carbon and nitrogen fixation, and produce large amounts of valuable biomass coupled with wastewater treatment. Also, microalgae can produce plant hormones and other high-value products, which can promote plant growth, improve soil fertility, soil ecological health, and control crop diseases. This research reviews the characteristics of microalgae in improving soil health, discusses the situation of microalgae in controlling soil pollutants, elaborates on the technical application of microalgae in alleviating soil problems, and proposes potential applications of microalgae in ecological environment. Also, resource utilization of multifunctional microalgae is discussed, to provide a theoretical basis for the application of microalgae in soil improvement.

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System metabolic engineering of exopolysaccharide-producing cyanobacteria in soil rehabilitation by inducing the formation of biological soil crusts: A review

Cited by 35 publications

References 79 publications

Analysis of Community Composition of Bacterioplankton in Changle Seawater in China by Illumina Sequencing Combined with Bacteria Culture

Analysis of Community Composition of Bacterioplankton in Changle Seawater in China by Illumina Sequencing Combined with Bacteria Culture

Recent Advances of Microalgae Exopolysaccharides for Application as Bioflocculants

Potential applications for multifunctional microalgae in soil improvement

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