Phycology最新文献_第2页

Is Africa Ready to Use Phycoremediation to Treat Domestic Wastewater as an Alternative Natural Base Solution? A Case Study 非洲是否已准备好使用植物修复法处理生活废水，作为替代性天然碱解决方案？案例研究

Phycology Pub Date : 2024-03-12 DOI: 10.3390/phycology4010009

P. Oberholster, Yolandi Schoeman, Anna-Maria Botha

引用次数: 0

Pelagic Sargassum as a Potential Vector for Microplastics into Coastal Ecosystems 远洋马尾藻是微塑料进入沿海生态系统的潜在媒介

Phycology Pub Date : 2024-02-23 DOI: 10.3390/phycology4010008

Dalila Aldana Arana, Tania P. Gil Cortés, Víctor Castillo Escalante, R. Rodríguez-Martínez

{"title":"Pelagic Sargassum as a Potential Vector for Microplastics into Coastal Ecosystems","authors":"Dalila Aldana Arana, Tania P. Gil Cortés, Víctor Castillo Escalante, R. Rodríguez-Martínez","doi":"10.3390/phycology4010008","DOIUrl":"https://doi.org/10.3390/phycology4010008","url":null,"abstract":"Macroalgal blooms are increasing globally, with those linked to pelagic Sargassum affecting over 30 nations since 2011. As Sargassum mats traverse the Atlantic Ocean and the Caribbean Sea, they entrap and transport plastic to coastal areas, intensifying pollution in diverse ecosystems. This research assessed microplastics (MPs) within Sargassum fluitans III collected from the northern Mexican Caribbean coast (March 2021 to January 2022). The study employed a hydrogen peroxide protocol for macroalgae pretreatment to optimize MP extraction. All samples analyzed contained MPs at monthly mean concentrations that ranged from 3.5 to 15.3 MPs g−1 DW, with fibers constituting ≥90%. Fiber colors, mainly transparent, blue, and black, exhibited diverse sizes and wear stages. The study underscores the pervasive and consistent presence of MPs in pelagic Sargassum reaching the Mexican Caribbean. Considering the documented Sargassum influxes to this coast in recent years (2789–11,297 tons km−1 yr−1), potential annual MP influxes range from 0.1 × 109 to 17.3 × 109 km−1 yr−1. Efficiently removing beach-cast Sargassum and directing it to landfills could serve as a viable strategy for the simultaneous removal of attached MPs from the ocean and coastal waters, offering a promising mitigation strategy to combat plastic pollution in the examined marine environment.","PeriodicalId":515462,"journal":{"name":"Phycology","volume":"12 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140437729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reciprocal Effects of Metal Mixtures on Phytoplankton 金属混合物对浮游植物的相互影响

Phycology Pub Date : 2024-02-06 DOI: 10.3390/phycology4010007

Ammara Nawaz, Pavlína Eliška Šotek, Marianna Molnárová

{"title":"Reciprocal Effects of Metal Mixtures on Phytoplankton","authors":"Ammara Nawaz, Pavlína Eliška Šotek, Marianna Molnárová","doi":"10.3390/phycology4010007","DOIUrl":"https://doi.org/10.3390/phycology4010007","url":null,"abstract":"Several types of contaminants are anthropogenically introduced into natural aquatic ecosystems and interact with other chemicals and/or with living organisms. Although metal toxicity alone has been relatively well studied, the toxic metal ion effects in the mixture have been thoroughly studied only during the last decades. This review focuses on the published reciprocal effects of different metals on different species of algae, together with describing their toxic effects on studied parameters. Phytoplankton as a bioindicator can help to estimate the reciprocal metal risk factor. Many methodologies have been developed and explored, such as the biotic ligand model (BLM), concentration addition (CA), independent action (IA), sensitivity distribution of EC50 species sensitivity distribution (SSD curves), and others, to study reciprocal metal toxicity and provide promising results, which are briefly mentioned too. From our review, we can commonly conclude the following: Zn acted antagonistically with most heavy metals (Al, Cu, Cd, and Ni). The Cu interaction with Cd, Fe, and Pb was mostly antagonistic. Cd showed synergistic behaviour with Hg, Cu, Zn, and Pb and antagonistic behaviour with Co and Fe in many cases. Methods and techniques need to be developed and optimised to determine reciprocal metal toxicity so that the ecotoxicological predictions made by using phytoplankton can be more accurate and related to real-time toxic metals risks to the aquatic ecosystem. This is the main objective of ecotoxicological tests for risk assessment. Understanding how metals enter algal cells and organelles can help to solve this challenge and was one of the main parts of the review.","PeriodicalId":515462,"journal":{"name":"Phycology","volume":"7 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139861680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reciprocal Effects of Metal Mixtures on Phytoplankton 金属混合物对浮游植物的相互影响

Phycology Pub Date : 2024-02-06 DOI: 10.3390/phycology4010007

Ammara Nawaz, Pavlína Eliška Šotek, Marianna Molnárová

{"title":"Reciprocal Effects of Metal Mixtures on Phytoplankton","authors":"Ammara Nawaz, Pavlína Eliška Šotek, Marianna Molnárová","doi":"10.3390/phycology4010007","DOIUrl":"https://doi.org/10.3390/phycology4010007","url":null,"abstract":"Several types of contaminants are anthropogenically introduced into natural aquatic ecosystems and interact with other chemicals and/or with living organisms. Although metal toxicity alone has been relatively well studied, the toxic metal ion effects in the mixture have been thoroughly studied only during the last decades. This review focuses on the published reciprocal effects of different metals on different species of algae, together with describing their toxic effects on studied parameters. Phytoplankton as a bioindicator can help to estimate the reciprocal metal risk factor. Many methodologies have been developed and explored, such as the biotic ligand model (BLM), concentration addition (CA), independent action (IA), sensitivity distribution of EC50 species sensitivity distribution (SSD curves), and others, to study reciprocal metal toxicity and provide promising results, which are briefly mentioned too. From our review, we can commonly conclude the following: Zn acted antagonistically with most heavy metals (Al, Cu, Cd, and Ni). The Cu interaction with Cd, Fe, and Pb was mostly antagonistic. Cd showed synergistic behaviour with Hg, Cu, Zn, and Pb and antagonistic behaviour with Co and Fe in many cases. Methods and techniques need to be developed and optimised to determine reciprocal metal toxicity so that the ecotoxicological predictions made by using phytoplankton can be more accurate and related to real-time toxic metals risks to the aquatic ecosystem. This is the main objective of ecotoxicological tests for risk assessment. Understanding how metals enter algal cells and organelles can help to solve this challenge and was one of the main parts of the review.","PeriodicalId":515462,"journal":{"name":"Phycology","volume":"9 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139801891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Helicoid Morphology of Arthrospira platensis NIES-39 Confers Temperature Compensation in the Longitudinal Movement Velocity of Its Trichomes Arthrospira platensis NIES-39 的螺旋形态使其毛状体的纵向运动速度具有温度补偿性

Phycology Pub Date : 2024-02-03 DOI: 10.3390/phycology4010006

Hideaki Shiraishi, Mari Sasase, Ayano Sakaida Nakashima

{"title":"Helicoid Morphology of Arthrospira platensis NIES-39 Confers Temperature Compensation in the Longitudinal Movement Velocity of Its Trichomes","authors":"Hideaki Shiraishi, Mari Sasase, Ayano Sakaida Nakashima","doi":"10.3390/phycology4010006","DOIUrl":"https://doi.org/10.3390/phycology4010006","url":null,"abstract":"The velocity of the gliding movement of filamentous cyanobacteria on a solid surface usually has a strong temperature dependency, and the higher the temperature, the faster the speed. Former studies on this phenomenon were conducted using filamentous cyanobacteria with straight morphology. We examined the velocity of the gliding movement of Arthrospira platensis NIES-39 along its longitudinal axis to see if the same was true for this cyanobacterium with helicoid trichomes. Experimental results showed little temperature dependency in the velocity in a wide temperature range in this cyanobacterium. However, when we examined the velocity using mutants with straight trichomes, their velocity was strongly affected by temperature, like other formerly analyzed filamentous cyanobacteria. This result indicates that the helicoid morphology of A. platensis trichomes confers temperature compensation to their migration velocity, enabling them to keep a relatively constant velocity under various temperatures. Migration of wild-type trichomes is considerably suppressed compared to the straight-trichome mutants on solid media. The temperature compensation in the locomotion of this organism appears to be established as part of such a suppression. It was also found that the velocity of this cyanobacterium depended on the trichome length when they were atypically short (<250 µm); the shorter the trichomes, the slower the gliding movement tended to be. This result indicates that the coordinated action of a high number of cells constituting the trichome is required for efficient gliding movement.","PeriodicalId":515462,"journal":{"name":"Phycology","volume":"3 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139808469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Helicoid Morphology of Arthrospira platensis NIES-39 Confers Temperature Compensation in the Longitudinal Movement Velocity of Its Trichomes Arthrospira platensis NIES-39 的螺旋形态使其毛状体的纵向运动速度具有温度补偿性

Phycology Pub Date : 2024-02-03 DOI: 10.3390/phycology4010006

Hideaki Shiraishi, Mari Sasase, Ayano Sakaida Nakashima

{"title":"Helicoid Morphology of Arthrospira platensis NIES-39 Confers Temperature Compensation in the Longitudinal Movement Velocity of Its Trichomes","authors":"Hideaki Shiraishi, Mari Sasase, Ayano Sakaida Nakashima","doi":"10.3390/phycology4010006","DOIUrl":"https://doi.org/10.3390/phycology4010006","url":null,"abstract":"The velocity of the gliding movement of filamentous cyanobacteria on a solid surface usually has a strong temperature dependency, and the higher the temperature, the faster the speed. Former studies on this phenomenon were conducted using filamentous cyanobacteria with straight morphology. We examined the velocity of the gliding movement of Arthrospira platensis NIES-39 along its longitudinal axis to see if the same was true for this cyanobacterium with helicoid trichomes. Experimental results showed little temperature dependency in the velocity in a wide temperature range in this cyanobacterium. However, when we examined the velocity using mutants with straight trichomes, their velocity was strongly affected by temperature, like other formerly analyzed filamentous cyanobacteria. This result indicates that the helicoid morphology of A. platensis trichomes confers temperature compensation to their migration velocity, enabling them to keep a relatively constant velocity under various temperatures. Migration of wild-type trichomes is considerably suppressed compared to the straight-trichome mutants on solid media. The temperature compensation in the locomotion of this organism appears to be established as part of such a suppression. It was also found that the velocity of this cyanobacterium depended on the trichome length when they were atypically short (<250 µm); the shorter the trichomes, the slower the gliding movement tended to be. This result indicates that the coordinated action of a high number of cells constituting the trichome is required for efficient gliding movement.","PeriodicalId":515462,"journal":{"name":"Phycology","volume":"57 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139867964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DNA Barcode-Assisted Inventory of the Marine Macroalgae from the Azores, Including New Records 亚速尔群岛海洋大型藻类 DNA 条形码辅助目录，包括新记录

Phycology Pub Date : 2024-01-19 DOI: 10.3390/phycology4010004

D. Gabriel, W. Schmidt, J. Micael, Mónica Moura, S. Fredericq

引用次数: 0

Accessing the Efficacy of Sargassum-Based Aqueous Phase Products Derived from Hydrothermal Carbonisation and Hydrothermal Liquefaction on Plant Growth 了解热液碳化和热液液化产生的马尾藻水相产品对植物生长的功效

Phycology Pub Date : 2024-01-18 DOI: 10.3390/phycology4010003

James Smith, A. Pilsbury, Vinod Kumar, Eleni E. Karamerou, C. Chuck, Leopoldo N. Herrera-Rodriguez, Julio V. Suarez, Michael J. Allen

{"title":"Accessing the Efficacy of Sargassum-Based Aqueous Phase Products Derived from Hydrothermal Carbonisation and Hydrothermal Liquefaction on Plant Growth","authors":"James Smith, A. Pilsbury, Vinod Kumar, Eleni E. Karamerou, C. Chuck, Leopoldo N. Herrera-Rodriguez, Julio V. Suarez, Michael J. Allen","doi":"10.3390/phycology4010003","DOIUrl":"https://doi.org/10.3390/phycology4010003","url":null,"abstract":"Mass Sargassum inundations have created opportunities for readily available biomass to be used as a crop enrichment application. However, the heavy metal contents of Sargassum pose serious concerns for crop administration and subsequent human consumption. Hydrothermal processing can break the feedstock components, allowing heavy metals to be partitioned, through the utilisation of high temperatures and pressures. As a result, seemingly nutrient-rich phases can be produced. Elemental analyses showed that Sargassum-derived fractions contain important macro- and micronutrients for plants, particularly ammonium, orthophosphate, and potassium, making them potential nutrient sources for plant growth. To date, no research has investigated the plant growth potential of hydrothermally processed Sargassum products from a bioavailability or biotoxicity perspective. We seek to determine if the aqueous phase products derived following Sargassum processing by hydrothermal carbonisation and liquefaction are toxic to higher plants, and if they can support plant growth. Aqueous phase products in ≥1% concentrations inhibit root growth and lateral root formation in Arabidopsis plants, likely from the presence of inhibitory compounds. However, aqueous phase products in ≤0.1% concentrations paired with an established nutrient mix may provide improved leaf and root growth. Both HTC and HTL were capable of eliciting improved foliage growth, while only HTC induced improved root growth. Conclusively, aqueous phase products lack nutrient potency to allow high dilutions for fertiliser application on their own and may contain inhibitory compounds that deter plant growth at high concentrations. However, they might have a purpose as an additive extract. The recovery of important elements needed for plant growth draws a promising path for future applications of hydrothermal processing with different feedstocks.","PeriodicalId":515462,"journal":{"name":"Phycology","volume":"124 31","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139615224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0