Green Algae (Chlorophyta and Streptophyta) in Rivers

Sherwood, Alison R.

doi:10.1007/978-3-319-31984-1_3

Cited by 6 publications

(5 citation statements)

References 59 publications

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“…Meanwhile, Cercozoa, Chlorophyta, and Apicomplexa dominate the soil protist communities across the diverse land use categories. Cercozoa, renowned for their adaptability to varying environmental conditions, remain unaffected by key soil parameters, ensuring their survival in a wide range of soil types [ 69 , 70 ]. Terrestrial Chlorophyta species, adapted to thrive in moist environments, account for their higher relative abundance in FF compared to CR, PF, and FG, where forest–grass mixes contribute to greater root biomass, stabilizing soil moisture levels.…”

Section: Discussionmentioning

confidence: 99%

Bacteria, Fungi, and Protists Exhibit Distinct Responses to Managed Vegetation Restoration in the Karst Region

Xiao,

Sun

et al. 2024

Microorganisms

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Bacteria, fungi, and protists occupy a pivotal position in maintaining soil ecology. Despite limited knowledge on their responses to managed vegetation restoration strategies in karst regions, we aimed to study the essential microbial communities involved in the process of vegetation restoration. We compared microbial characteristics in four land use types: planted forests (PF), forage grass (FG), a mixture of plantation forest and forage grass (FF), and cropland (CR) as a reference. Our findings revealed that the richness of bacteria and protists was higher in FF compared to PF, while fungal richness was lower in both PF and FF than in CR. Additionally, the bacterial Shannon index in FF was higher than that in CR and PF, while the fungal and protist Shannon indices were similar across all four land use types. Significant differences were observed in the compositions of bacterial, fungal, and protist communities between FF and the other three land use types, whereas bacterial, fungal, and protist communities were relatively similar in PF and FG. In FF, the relative abundance of bacterial taxa Acidobacteria, Firmicutes, and Gemmatimonadetes was significantly higher than in PF and CR. Fungal communities were dominated by Ascomycota and Basidiomycota, with the relative abundance of Ascomycota significantly higher in FF compared to other land use types. Regarding protistan taxa, the relative abundance of Chlorophyta was higher in FF compared to CR, PF, and FG, while the relative abundance of Apicomplexa was higher in CR compared to FF. Importantly, ammonium nitrogen, total phosphorus, and microbial biomass nitrogen were identified as key soil properties predicting changes in the diversity of bacteria, fungi, and protists. Our results suggest that the microbial community under FF exhibits greater sensitivity to vegetation restoration compared to PF and FG. This sensitivity may stem from differences in soil properties, the formation of biological crusts and root systems, and management activities, resulting in variations in bacterial, fungal, and protist diversity and taxa in PF. As a result, employing a combination restoration strategy involving plantation forest and forage grass proves to be an effective approach to enhance the microbial community and thereby improve ecosystem functionality in ecologically fragile areas.

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Section: Discussionmentioning

confidence: 99%

Bacteria, Fungi, and Protists Exhibit Distinct Responses to Managed Vegetation Restoration in the Karst Region

Xiao,

Sun

et al. 2024

Microorganisms

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“…This group represents approximately 40% of the total number of autotrophic picoplankton cells on the planet and includes the embryonic terrestrial plants from the Viridiplantae phylum (Leliaert, 2019). Nearly 7000 species belong to this group of eukaryotes, and they distribute across diverse habitats, including poles, marine environments, and some terrestrial ecosystems (Sherwood, 2016). The Viridiplantae divide into two clades, i.e., Chlorophyta and Streptophyta.…”

Section: Viridiplantae Groupmentioning

confidence: 99%

“…The pigments include astaxanthin, lutein, canthaxanthin, and b-carotene and are used as food supplements, natural antioxidants, or dyes. Their active compounds vary widely and include antimicrobial, antioxidant, neuroprotective, hypolipidemic, hypoglycemic, and immunizing metabolites (Sherwood, 2016;Zhang et al, 2016;Al-Homaidan et al, 2018). Rafika et al (2018) compared the antibacterial, antioxidant, and cytotoxic activities of EPS and different extracts (methanol, hexane, acetone, acetone: methanol, and water) from Cosmarium sp.…”

Section: Viridiplantae Groupmentioning

confidence: 99%

Photoautotrophic microorganisms with biotechnological potential unexplored

Serna

Obando

Martínez

et al. 2022

revagro

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The study of phototrophic organisms is becoming more common due to their high nutritional value and capacity to produce various bioactive compounds with potential use in food, pharmaceutical, nutraceutical, cosmeceutical, and chemical industries. These compounds have nutritional and therapeutic properties such as neuroprotective, antioxidant, anti-inflammatory, anticoagulant, hyperlipidemic, immunomodulatory, and immunoregulatory. For this reason, phototrophic organisms are an essential supply for different industries since they can satisfy their current commercial demand while reducing the environmental impact and promoting the bioeconomic development of the country. However, research on these microorganisms is still limited and focused on a limited group of species. This review examines the biotechnological applications of bioactive metabolites produced by several photoautotrophic microbial species from poorly explored environments and their industrial application. As a result, we could determine that there are many little-explored species with a wide variety of bioactive compounds. Moreover, they have potential uses in various industries such as nutraceuticals, cosmeceuticals, and energy. Furthermore, it was concluded that the bioindustry represents a business opportunity and can also be established as a platform for modernization and competitiveness for various country's economic sectors.

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“…Scenedesmus is a common, colony-forming (4 -30 elongated cells laterally joined), non-motile and high-ligth adapted freshwater green algae (Chlorococcales), often found in stream biofilms (e.g. Pohlon et al, 2010;Sherwood, 2016), and can pioneer biofilm succession (Roeselers et al, 2007). The phototrophic biofilms were further composed of diverse Diatomea predominantely classified as Bacillariophytina (with 12 sequence variants and 5.2 out of 7.7% overall contribution of Diatomea to phototrophic community read counts) and Fragilariales (6 sequence variants and 2.4% out of 7.7% contribution).…”

Section: Declaration Of Interestsmentioning

confidence: 99%

Morphogenesis and oxygen dynamics in phototrophic biofilms growing across a gradient of hydraulic conditions

et al. 2021

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Biofilms are surface-attached and matrix-enclosed microbial communities that dominate microbial life in numerous ecosystems. Using flumes and automated optical coherence tomography, we studied the morphogenesis of phototrophic biofilms along a gradient of hydraulic conditions. Compact and coalescent biofilms formed under elevated bed shear stress, whereas protruding clusters separated by troughs formed under reduced shear stress. This morphological differentiation did not linearly follow the hydraulic gradient, but a break point emerged around a shear stress of~0.08 Pa. While community composition did not differ between high and low shear environments, our results suggest that the morphological differentiation was linked to biomass displacement and reciprocal interactions between the biofilm structure and hydraulics. Mapping oxygen concentrations within and around biofilm structures, we provide empirical evidence for biofilm-induced alterations of oxygen mass transfer. Our findings suggest that architectural plasticity, efficient mass transfer, and resistance to shear stress contribute to the success of phototrophic biofilms.

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Green Algae (Chlorophyta and Streptophyta) in Rivers

Cited by 6 publications

References 59 publications

Bacteria, Fungi, and Protists Exhibit Distinct Responses to Managed Vegetation Restoration in the Karst Region

Bacteria, Fungi, and Protists Exhibit Distinct Responses to Managed Vegetation Restoration in the Karst Region

Photoautotrophic microorganisms with biotechnological potential unexplored

Morphogenesis and oxygen dynamics in phototrophic biofilms growing across a gradient of hydraulic conditions

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