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González-Ballesteros N, Fernandes M, Machado R, Sampaio P, Gomes AC, Cavazza A, Bigi F, Rodríguez-Argüelles MC. Valorisation of the Invasive Macroalgae Undaria pinnatifida (Harvey) Suringar for the Green Synthesis of Gold and Silver Nanoparticles with Antimicrobial and Antioxidant Potential. Mar Drugs 2023; 21:397. [PMID: 37504928 PMCID: PMC10381743 DOI: 10.3390/md21070397] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/28/2023] [Accepted: 07/05/2023] [Indexed: 07/29/2023] Open
Abstract
Bacterial and fungal infections are a challenging global problem due to the reported increasing resistance of pathogenic microorganisms to conventional antimicrobials. Nanomaterials are a promising strategy to fight infections caused by multidrug-resistant microbes. In this work, gold (Au@UP) and silver (Ag@UP) nanoparticles were produced for the first time by green synthesis using an aqueous extract of the invasive macroalgae Undaria pinnatifida (UP). The nanoparticles were characterized by a wide range of physicochemical techniques. Au@UP and Ag@UP demonstrated to be spherical and crystalline with an average size of 6.8 ± 1.0 nm and 14.1 ± 2.8 nm, respectively. Carbohydrates and proteins of the UP extract may participate in the synthesis and capping of the nanoparticles. The UP extract, Ag@UP, and Au@UP were assessed for their antimicrobial activity against Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Candida albicans, and Candida auris. Ag@UP showed the highest antimicrobial activity with very low MIC and MBC values for all the tested bacteria, and Au@UP demonstrated to be very effective against biofilm-producing bacteria. The antifungal properties of both Ag@UP and Au@UP were remarkable, inhibiting hyphae formation. This study points towards a very promising biomedical exploitation of this invasive brown algae.
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Affiliation(s)
| | - Mário Fernandes
- Centre of Molecular and Environmental Biology (CBMA)/Aquatic Research Network (ARNET) Associate Laboratory, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- Institute of Science and Innovation for Sustainability (IB-S), Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Raúl Machado
- Centre of Molecular and Environmental Biology (CBMA)/Aquatic Research Network (ARNET) Associate Laboratory, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- Institute of Science and Innovation for Sustainability (IB-S), Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Paula Sampaio
- Centre of Molecular and Environmental Biology (CBMA)/Aquatic Research Network (ARNET) Associate Laboratory, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- Institute of Science and Innovation for Sustainability (IB-S), Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Andreia C. Gomes
- Centre of Molecular and Environmental Biology (CBMA)/Aquatic Research Network (ARNET) Associate Laboratory, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- Institute of Science and Innovation for Sustainability (IB-S), Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Antonella Cavazza
- Dipartimento Scienze Chimiche, Della Vita e della Sostenibilità Ambientale, Università di Parma, 43124 Parma, Italy
| | - Franca Bigi
- Dipartimento Scienze Chimiche, Della Vita e della Sostenibilità Ambientale, Università di Parma, 43124 Parma, Italy
- Institute of Materials for Electronics and Magnetism, National Research Council, 43124 Parma, Italy
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Song WH, Li JJ. The effects of intraspecific variation on forecasts of species range shifts under climate change. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 857:159513. [PMID: 36257416 DOI: 10.1016/j.scitotenv.2022.159513] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/12/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
As global climate change is altering the distribution range of macroalgae across the globe, it is critical to assess its impact on species range shifts to inform the biodiversity conservation of macroalgae. Latitude/environmental gradients could cause intraspecific variability, which may result in distinct responses to climate change. It remains unclear whether geographical variation occurs in the response of species' populations to climate change. We tested this assumption using the brown alga Sargassum thunbergii, a habitat-forming macroalgae encompassing multiple divergent lineages along the Northwest Pacific. Previous studies revealed a distinct lineage of S. thunbergii in rear-edge populations. Given the phylogeographic structure and temperature gradients, we divided these populations into the southern and northern groups. We assessed the physiological responses of the two groups to temperature changes and estimated their niche differences using n-dimensional hypervolumes. A higher photosynthetic rate and antioxidative abilities were detected in the southern group of S. thunbergii than in the northern group. In addition, significant niche differentiation was detected between the two groups, suggesting the possibility for local adaptation. Given these results, we inferred that the southern group (rear-edge populations) may be more resilient to climate change. To examine climate-driven range shifts of S. thunbergii, we constructed species- and lineage-level species distribution models (SDMs). Predictions of both levels showed considerable distribution contracts along the Chinese coasts in the future. For the southern group, the lineage-level model predicted less habitat loss than the species-level model. Our results highlight the importance of considering intraspecific variation in climate change vulnerability assessments for coastal species.
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Affiliation(s)
- Wang-Hui Song
- Jiangsu Province Engineering Research Center for Marine Bio-resources Sustainable Utilization, College of Oceanography, Hohai University, Nanjing 210024, China
| | - Jing-Jing Li
- Jiangsu Province Engineering Research Center for Marine Bio-resources Sustainable Utilization, College of Oceanography, Hohai University, Nanjing 210024, China.
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Prasedya ES, Padmi H, Ilhami BTK, Martyasari NWR, Sunarwidhi AL, Widyastuti S, Khairinisa MA, Cokrowati N, Simangunsong EE, Frediansyah A. Brown Macroalgae Sargassum cristaefolium Extract Inhibits Melanin Production and Cellular Oxygen Stress in B16F10 Melanoma Cells. Molecules 2022; 27:8585. [PMID: 36500679 PMCID: PMC9741006 DOI: 10.3390/molecules27238585] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 11/28/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022] Open
Abstract
The brown macroalgae Sargassum has been reported for its anti-UV and photoprotective potential for industrial applications. This study evaluated the melanin inhibition activity of Sargassum cristaefolium (SCE) ethanol extract. Melanogenesis inhibition by SCE was assessed in vitro with B16-F10 melanoma cell models and in silico against melanin regulatory proteins Tyrosinase (TYR) and Melanocortin 1 Receptor (MC1R). The regulatory properties evaluated were the melanin content, intracellular tyrosinase activity and cellular antioxidant activities. In addition, the bioactive compounds detected in SCE were subjected to molecular docking against TYR and MC1R. Based on the results, 150 µg/mL SCE effectively inhibited the production of melanin content and intracellular tyrosinase activity. Cellular tyrosinase activity was reduced by SCE-treated cells in a concentration-dependent manner. The results were comparable to the standard tyrosinase inhibitor kojic acid. In addition, SCE effectively decreased the intracellular reactive oxygen species (ROS) levels in B16-F10 cells. The antioxidant properties may also contribute to the inhibition of melanogenesis. In addition, LCMS UHPLC-HR-ESI-MS profiling detected 33 major compounds. The results based on in silico study revealed that the bioactive compound putative kaurenoic acid showed a strong binding affinity against TYR (-6.5 kcal/mol) and MC1R (-8.6 kcal/mol). However, further molecular analyses are needed to confirm the mechanism of SCE on melanin inhibition. Nevertheless, SCE is proposed as an anti-melanogenic and antioxidant agent, which could be further developed into cosmetic skin care products.
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Affiliation(s)
- Eka Sunarwidhi Prasedya
- Bioscience and Biotechnology Research Centre, Faculty of Mathematics and Natural Sciences, University of Mataram, Mataram 83126, Indonesia
- Department of Biology, Faculty of Mathematics and Natural Science, University of Mataram, Mataram 83126, Indonesia
| | - Hasriaton Padmi
- Bioscience and Biotechnology Research Centre, Faculty of Mathematics and Natural Sciences, University of Mataram, Mataram 83126, Indonesia
| | - Bq Tri Khairina Ilhami
- Bioscience and Biotechnology Research Centre, Faculty of Mathematics and Natural Sciences, University of Mataram, Mataram 83126, Indonesia
| | - Ni Wayan Riyani Martyasari
- Bioscience and Biotechnology Research Centre, Faculty of Mathematics and Natural Sciences, University of Mataram, Mataram 83126, Indonesia
| | | | - Sri Widyastuti
- Faculty of Food Technology and Agroindustry, University of Mataram, Mataram 83126, Indonesia
| | - Miski Aghnia Khairinisa
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Bandung 45363, Indonesia
| | - Nunik Cokrowati
- Aquaculture Program, Faculty of Agriculture, University of Mataram, Mataram 83127, Indonesia
| | | | - Andri Frediansyah
- Research Center for Food Technology and Processing (PRTPP), National Research and Innovation Agency (BRIN), Wonosari 55861, Indonesia
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Shang S, Li L, Zhang Z, Zang Y, Chen J, Wang J, Wu T, Xia J, Tang X. The Effects of Secondary Growth of Spartina alterniflora after Treatment on Sediment Microorganisms in the Yellow River Delta. Microorganisms 2022; 10:microorganisms10091722. [PMID: 36144325 PMCID: PMC9506343 DOI: 10.3390/microorganisms10091722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 08/22/2022] [Accepted: 08/23/2022] [Indexed: 11/30/2022] Open
Abstract
As a typical invasive species, Spartina alterniflora is widely recognized as one of the primary threats to biodiversity in various habitats, including wetlands. Although the invasion by S. alterniflora has been managed in multiple ways, it may reappear after treatment. How S. alterniflora affects the soil microbial community in coastal wetlands during its regeneration process has not yet been clarified. Here, rhizosphere soil samples (RSPs) and bulk soil samples (SSPs) were collected in the S. alterniflora community and a high-throughput sequencing method was conducted to analyze the composition and diversity of soil microorganisms. Meanwhile, we also obtain the soil physicochemical properties. In the present study, there was no significant difference in the alpha diversity of both bacterial and fungal communities in the SSP and RSP groups. The PCoA (principal coordinate analysis) also showed that the microbial community structure did not differ significantly between the SSP and RSP groups. The results showed that except for pH, the total sulfur (TS) content, total nitrogen (TN) content, and electrical conductivity (EC) did not differ significantly (p > 0.05) between the SSP and RSP groups. The composition of the bacterial and fungal community in the rhizosphere of S. alterniflora was similar to that found in the surrounding soils. The top two dominant bacterial phyla were Proteobacteria and Desulfobacterota in the present study. Venn diagram results also support this view; most OTUs belong to the common OTUs of the two groups, and the proportion of unique OTUs is relatively small. The LEfSe (LDA effect size) analysis showed that Campylobacterota (at the phylum level) and Sulfurimonas (at the genus level) significantly increased in the RSP group, implying that the increased Sulfurimonas might play an essential role in the invasion by S. alterniflora during the under-water period. Overall, these results suggest that the bacterial and fungal communities were not significantly affected by the S. alterniflora invasion due to the short invasion time.
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Affiliation(s)
- Shuai Shang
- School of Biological & Environmental Engineering, Binzhou University, Binzhou 256600, China
- College of Marine Life Sciences, Ocean University of China, Qingdao 266005, China
- Correspondence: (S.S.); (X.T.)
| | - Liangyu Li
- College of Marine Life Sciences, Ocean University of China, Qingdao 266005, China
| | - Zaiwang Zhang
- School of Biological & Environmental Engineering, Binzhou University, Binzhou 256600, China
| | - Yu Zang
- Department of Natural Resources, First Institute of Oceanography, Qingdao 266100, China
| | - Jun Chen
- College of Marine Life Sciences, Ocean University of China, Qingdao 266005, China
| | - Jun Wang
- School of Biological & Environmental Engineering, Binzhou University, Binzhou 256600, China
| | - Tao Wu
- School of Biological & Environmental Engineering, Binzhou University, Binzhou 256600, China
| | - Jiangbao Xia
- School of Biological & Environmental Engineering, Binzhou University, Binzhou 256600, China
- Shandong Provincial Key Laboratory of Eco-Environmental Science for Yellow River Delta, Binzhou University, Binzhou 256600, China
| | - Xuexi Tang
- College of Marine Life Sciences, Ocean University of China, Qingdao 266005, China
- Correspondence: (S.S.); (X.T.)
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Fontana S, Yeh L, Zhan SH, Liu S. A multifaceted ecological assessment reveals the invasion of the freshwater red macroalga Montagnia macrospora (Batrachospermales, Rhodophyta) in Taiwan. Ecol Evol 2022; 12:e8906. [PMID: 35571755 PMCID: PMC9077021 DOI: 10.1002/ece3.8906] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 04/14/2022] [Accepted: 04/19/2022] [Indexed: 12/11/2022] Open
Abstract
Invasive freshwater macroalgae are rarely described. Montagnia macrospora is a freshwater red alga introduced from South America to East Asia via the global aquarium trade. The earliest occurrence record of this alga in Taiwan is dated 2005. To determine whether M. macrospora has become invasive in Taiwan and to understand the traits that facilitated its invasion, we took a multifaceted approach that combines examination of ecological background and population genetic analysis. Our island-wide survey showed that M. macrospora is widespread in the field across Taiwan, where the climate greatly differs from that of South America, and can self-sustain for nearly a decade. Our population genetic analysis revealed a lack of genetic diversity of M. macrospora in Taiwan, consistent with the hypothesis that the alga expanded through asexual reproduction. Moreover, during our long-term ecological assessments and field surveys, we observed that M. macrospora is an ecological generalist that can survive in a wide range of temperature, pH, illumination, and nutrient enrichment. Taken together, our data suggest that M. macrospora has successfully invaded the freshwater ecosystems of Taiwan, likely due to its ability to disperse asexually and to grow under broad environmental conditions. We hope that our study brings attention to invasive freshwater algae, which have been overlooked in conservation planning and management.
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Affiliation(s)
- Silvia Fontana
- Department of Life Science & Center for Ecology and EnvironmentTunghai UniversityTaichungTaiwan
| | - Lan‐Wei Yeh
- Department of Life Science & Center for Ecology and EnvironmentTunghai UniversityTaichungTaiwan
| | - Shing Hei Zhan
- Department of Zoology & Biodiversity Research CentreThe University of British ColumbiaVancouverBritish ColumbiaCanada
| | - Shao‐Lun Liu
- Department of Life Science & Center for Ecology and EnvironmentTunghai UniversityTaichungTaiwan
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Lu K, Han G, Wu H. Effects of
Spartina alterniflora
invasion on the benthic invertebrate community in intertidal wetlands. Ecosphere 2022. [DOI: 10.1002/ecs2.3963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Kangle Lu
- Key Laboratory of Wetland Ecology and Environment Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences Changchun China
- University of Chinese Academy of Sciences Beijing China
| | - Guangxuan Han
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences Yantai China
- Yellow River Delta Field Observation and Research Station of Coastal Wetland Ecosystem, Chinese Academy of Sciences Dongying China
| | - Haitao Wu
- Key Laboratory of Wetland Ecology and Environment Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences Changchun China
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Pratt CJ, Denley D, Metaxas A. Selection of predictor variables for species distribution models: a case study with an invasive marine bryozoan. Oecologia 2022; 198:319-336. [PMID: 35080649 DOI: 10.1007/s00442-022-05110-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 01/09/2022] [Indexed: 12/11/2022]
Abstract
Species distribution models (SDMs) are important tools for predicting the occurrence and abundance of organisms in space and time, with numerous applications in ecology. However, the accuracy and utility of SDMs can be compromised when predictor variables are selected without careful consideration of their ecophysiological relevance to the focal organism. We conducted an in-depth examination of the variable selection process by evaluating predictors to be used in SDMs for Membranipora membranacea, an ecologically significant marine invasive species with a complex lifecycle, as a case study. Using an information-theoretic and multi-model inference approach based on generalized linear mixed models, we assessed multiple environmental variables (depth, kelp density, kelp substrate, temperature, and wave exposure) as predictors of the abundance of multiple life stages of M. membranacea, investigating species-environment relationships and relative and absolute variable importance. We found that the relative importance of a predictor, the metric calculated to represent a predictor, and whether a predictor was proximal or distal were important considerations in the variable selection process. Data constraints (e.g. sample size, characteristics of available predictor data) may inhibit accurate assessment of predictor variables during variable selection. Importantly, our results suggest that species-environment relationships derived from small-scale studies can inform variable selection for SDMs at larger spatiotemporal scales. We developed a conceptual framework for variable selection for SDMs which can be applied to most contexts of species distribution modelling, but particularly those with several candidate predictors and a large dataset.
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Affiliation(s)
- Conrad James Pratt
- Department of Oceanography, Dalhousie University, Halifax, NS, B3H 4R2, Canada.
| | - Danielle Denley
- School of Resource and Environmental Management, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada
| | - Anna Metaxas
- Department of Oceanography, Dalhousie University, Halifax, NS, B3H 4R2, Canada
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