Article
Plant Sciences
Camila Francieli da Silva Malone, Diego Bonaldo Genuario, Marcelo Gomes Marcal Vieira Vaz, Marli Fatima Fiore, Celia Leite Sant'Anna
Summary: This study investigated a group of cyanobacterial strains resembling Leptolyngbya morphotypes using a polyphasic approach, leading to the discovery of a new genus named Monilinema. The unique characteristics of these strains, including their morphology, genetic divergence, and ecological features, support the establishment of this novel taxon within the cyanobacterial diversity.
JOURNAL OF PHYCOLOGY
(2021)
Article
Microbiology
Stanislava Kralova, Lenka Davidova-Gerzova, Adam Valcek, Matej Bezdicek, Ivan Rychlik, Veronika Rezacova, Alois Cizek
Summary: This study analyzed three difficult-to-cultivate and strictly anaerobic strains and proposed classifying them into two new genera.
MICROBIOLOGY SPECTRUM
(2022)
Article
Microbiology
Guilherme S. Hentschke, Vitor Ramos, Angela Pinheiro, Aldo Barreiro, M. Sofia Costa, Adriana Rego, Sebastien Brule, Vitor M. Vasconcelos, Pedro N. Leao
Summary: This study described the morphology, phylogeny, and secondary structures of three strains of marine Cyanobacteria isolated from north Portugal. The results identified three new genera and emphasized the need for taxonomic revision of the Oscillatoriales families.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2022)
Article
Microbiology
Limin Xue, Liu Tang, Juanjuan Zhao, Zhenjuan Fang, Hanxu Liu, Jianjun Qiao, Guishan Zhang
Summary: Strain WN066(T) isolated from saline-alkali wetland soil in Tianjin, China represents a novel species within the genus Bacillus, named B. salipaludis sp. nov. This strain is able to grow under high salt and alkaline conditions, and possesses unique cellular fatty acids and polar lipids.
ARCHIVES OF MICROBIOLOGY
(2021)
Article
Plant Sciences
Fabiana Soares, Joao Trovao, Anne-Catherine Ahn, Annick Wilmotte, Susana M. Cardoso, Igor Tiago, Antonio Portugal
Summary: In this study, a coccoid cyanobacterium resembling Aphanocapsa was identified and found to belong to a separate family within the order Synechococcales. The proposal of a new family, Petrachlorosaceae, along with the description of new genera and species, was based on a comprehensive analysis of morphology, phylogeny, and ecology.
JOURNAL OF PHYCOLOGY
(2022)
Article
Microbiology
Fang Liu, Yang-Yang Liu, Yu-Qian Li, Rui-Feng Lei, Qin Ma, Dilireba Abudourousuli, Zulihumaer Rouzi, Muyesaier Aosiman, Deng-Di An, Wen-Jun Li
Summary: A novel bacterium, Pontibacter pamirensis sp. nov., was isolated from saline-alkaline soil in northwest China. The strain exhibited unique morphological and physiological characteristics and showed high genetic similarity to Pontibacter diazotrophicus and Pontibacter yuliensis.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2022)
Article
Microbiology
Ming-Xian Han, Jian-Rong Huang, Hong-Chen Jiang, Bao-Zhu Fang, Yuan-Guo Xie, Wen-Jun Li
Summary: A novel strain of crescent-rod shaped bacterium, designated Lunatibacter salilacus gen. nov., sp. nov., was isolated from a sediment sample of Qinghai Lake in China. Phylogenetic analysis showed its unique position within the family Cyclobacteriaceae, indicating it represents a new genus and species.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Microbiology
Qin Xiong, Yunpeng Liu, Juanjuan Zhao, Zhenjuan Fang, Guishan Zhang
Summary: The bacterium WN024(T) isolated from saline-alkali wetland soil in Tianjin, China, is identified as a new species Salimicrobium humidisoli sp. nov. It shows a wide range of growth conditions in terms of temperature, pH, and salinity.
CURRENT MICROBIOLOGY
(2021)
Article
Microbiology
Liu Tang, Hanxu Liu, Wenni Sun, Juanjuan Zhao, Shaohua Miao, Qi Gong, Lian Ma, Guishan Zhang
Summary: Strain YL5-2(T) is a novel species of the genus Halovibrio, characterized as a Gram-staining-negative, halophilic, aerobic, oval-shaped or vibrio-shaped bacterium motile by a polar flagellum. Phenotypic, chemotaxonomic, phylogenetic, and genomic analyses were conducted to support the proposal of the name Halovibrio salipaludis sp. nov. for this strain.
CURRENT MICROBIOLOGY
(2021)
Article
Microbiology
Hanxu Liu, Liu Tang, Juanjuan Zhao, Shaohua Miao, Qi Gong, Lian Ma, Guishan Zhang
Summary: Strain WN018(T) is a halophilic bacterium isolated from a saline-alkali wetland soil in Tianjin, China, belonging to the genus Halomonas with highest sequence similarity of 97.50% to its nearest neighbor. A novel species, Halomonas humidisoli sp. nov., is proposed to accommodate this unique isolate.
CURRENT MICROBIOLOGY
(2021)
Article
Microbiology
Ji-Quan Sun, Pa Eryang Yiayeng, Lian Xu, Xiao-Xian Huang, Yan Li
Summary: RN3S43(T) is a Gram-positive bacterial strain isolated from saline-alkaline soil in Inner Mongolia, China. It shows specific characteristics in terms of growth conditions, physiological tests, and genetic relationships with other bacterial strains. The strain is proposed as a novel species, Ruania alkalisoli sp. nov., with the type strain RN3S43(T).
CURRENT MICROBIOLOGY
(2021)
Article
Microbiology
Amaraja Joshi, Sonia Thite, Prachi Karodi, Neetha Joseph, Tushar Lodha
Summary: A new bacterium (MEB199(T)) isolated from Lonar Lake in India belongs to a newly proposed genus Alkalihalobacterium, with unique growth conditions and fatty acid composition; it shares high 16S rRNA gene sequence similarity with Ahb. alkalinitrilicus ANL-iso4(T).
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Microbiology
Qi Gong, Pu Zhao, Shaohua Miao, Keke Yi, Chunhong Ma, Guishan Zhang
Summary: A novel extremely halophilic archaeon, designated Halorubrum salipaludis sp. nov., was isolated from the saline-alkali wetland soil in Tianjin, China. This strain, WN019(T), showed specific morphological and physiological characteristics and exhibited moderate sequence similarity to other Halorubrum species.
ARCHIVES OF MICROBIOLOGY
(2022)
Article
Microbiology
Shuang Wang, Lei Sun, Manik Prabhu Narsing Rao, Guo-Hong Liu, Pin-Jiao Jin, Zhou-Yan Dong, Zheng-Han Lian, Xiao-Yu Hao, Ming-Yi Zhang, Wen-Jun Li
Summary: A novel strain of Alteribacter, named Alteribacter salitolerans sp. nov., was isolated from a saline-alkali soil sample collected from Heilongjiang Province, China. This strain exhibited unique characteristics and showed low sequence similarities with known Alteribacter species. Through phenotypic, phylogenetic, chemotaxonomic, and genome comparison, the classification of this strain as Alteribacter salitolerans sp. nov. was proposed.
ARCHIVES OF MICROBIOLOGY
(2022)
Article
Microbiology
Zulihumaer Rouzi, Yu-Qian Li, Muyesaier Aosiman, Dilireba Abudourousuli, Lan Liu, Dalal Hussien M. Alkhalifah, Wael N. Hozzein, Deng-Di An, Wen-Jun Li
Summary: A new strain of bacteria, designated TRPH29(T), was isolated from saline-alkaline soil in the Gurbantunggut desert, Xinjiang, China. The strain belongs to the genus Alkalihalobacillus, with the closest sequence similarities to Alkalihalobacillus krulwichiae, Alkalihalobacillus wakoensis, and Alkalihalobacillus akibai. The genomic analysis revealed the strain's genome size, G + C content, and the presence of specific fatty acids and polar lipids. Based on these findings, the strain is proposed as a novel species, Alkalihalobacillus deserti sp. nov.
CURRENT MICROBIOLOGY
(2023)
Article
Ecology
Thierry A. Pellegrinetti, Simone R. Cotta, Hugo Sarmento, Juliana S. Costa, Endrews Delbaje, Celia R. Montes, Plinio B. Camargo, Laurent Barbiero, Ary T. Rezende-Filho, Marli F. Fiore
Summary: This study investigated the effects of different environmental conditions on bacterial communities and their functioning in six adjacent soda lakes in the Pantanal biome, Brazil. The results showed that the lakes could be classified into three types based on wet and dry season data, and the bacterial community composition and functioning were consistent with this classification. The study also found that microbial abundance and diversity increased during the dry period, indicating the importance of precipitation-evaporation balance in these systems. The microbiome dataset of this study can serve as a baseline for restoring impacted soda lakes. The study highlights the sensitivity of tropical soda lakes to climate change and the potential for drastic shifts in community diversity.
Article
Biochemistry & Molecular Biology
Rafael B. B. Dextro, Endrews Delbaje, Vanessa Geraldes, Ernani Pinto, Paul F. F. Long, Marli F. F. Fiore
Summary: Cyanobacteria produce mycosporine-like amino acids (MAAs) as a defense mechanism against solar UV radiation. In this study, the relationship between gene cluster architecture and constitutive production of MAAs was evaluated. It was found that MAAs were only produced in strains with a co-linear gene cluster and this production was enhanced by UV irradiation and different culture media. Other photoprotection strategies were observed in strains that did not produce MAAs. The conservation of gene order in MAA biosynthesis warrants further experimentation to understand its evolutionary and ecological significance.
Article
Environmental Sciences
Meryem Jabrane, Abdessamad Touiouine, Abdelhak Bouabdli, Said Chakiri, Ismail Mohsine, Vincent Valles, Laurent Barbiero
Summary: When studying large multiparametric databases, the probability of observing extreme values is high. The information carried by these extreme values monopolizes a large part of the information conveyed by the entire database. Data transformation, specifically log transformation, can improve the spatial structure of the data and provide a better understanding of the associated processes. These results have implications for more targeted and cost-effective water quality monitoring by Regional Health Agencies.
Article
Biochemistry & Molecular Biology
Rafael B. Dextro, Marli F. Fiore, Paul F. Long
Summary: Multiple lines of evidence suggest that all MAAs are derived from mycosporine-glycine in cyanobacteria and algae, modified by an ATP-dependent ligase encoded by the mysD gene. Therefore, it is proposed to rename mysD as mycosporine-glycine-amine ligase (MG-amine ligase), considering relaxed specificity for various amino acid substrates. The evolutionary and ecological context of MG-amine ligase catalysis is important, especially in the biotechnology field for producing MAAs with enhanced optical or antioxidant properties.
Article
Plant Sciences
Daniele F. Parma, Kaik F. Souza, Marcelo G. M. V. Vaz, Sandy Bastos Martins, Wagner L. Araujo, Agustin Zsogon, Andreas P. M. Weber, M. Eric Schranz, Adriano Nunes-Nesi
Summary: The flowers of Cleomaceae family exhibit remarkable floral diversity and abundant nectar and pollen production. This study evaluated the flower functional characteristics and reproductive traits of different Cleomaceae species. The results showed different sexual systems and the most efficient type of crossing for seed production. These findings suggest that the Cleomaceae family can provide valuable information on mechanisms involved in reproductive traits in plants.
Article
Biotechnology & Applied Microbiology
Allan Victor M. Almeida, Marcelo Gomes Marcal Vieira Vaz, Naira Valle de Castro, Diego Bonaldo Genuario, Jean Coutinho Oder, Pedro Augusto Marazzo de Souza, Sandy Bastos Martins, Mariana Machado, Adriano Nunes-Nesi, Wagner L. Araujo
Summary: In this study, the diversity within Desmonostoc was investigated using morphological, molecular, metabolic, and physiological characteristics. The results showed that Desmonostoc has high species diversity, with a large metabolic diversity and great biotechnological potential.
SYSTEMATIC AND APPLIED MICROBIOLOGY
(2023)
Article
Environmental Sciences
Ismail Mohsine, Ilias Kacimi, Shiny Abraham, Vincent Valles, Laurent Barbiero, Fabrice Dassonville, Tarik Bahaj, Nadia Kassou, Abdessamad Touiouine, Meryem Jabrane, Meryem Touzani, Badr El Mahrad, Tarik Bouramtane
Summary: This study successfully divided groundwater bodies into 11 homogeneous clusters through the intersection analysis of two databases, which can be used to develop specific management and protection strategies. The study also emphasizes the need to consider the temporal variability of groundwater quality when implementing monitoring and management programs.
Letter
Limnology
Rafael B. Dextro, Endrews Delbaje, Paloma N. N. Freitas, Vanessa Geraldes, Ernani Pinto, Paul F. Long, Marli F. Fiore
Summary: Antarctica presents challenges to life, but cyanobacteria have adapted to this harsh environment and become dominant primary producers. A study discovered a cyanobacterium strain, Halotia branconii CENA392, that has genes for low-temperature adaptation and production of photoprotective compounds. The study also found that the strain can produce these compounds without exposure to low temperatures or ultraviolet radiation stress. This research highlights the importance of studying microorganisms from extreme intertidal environments for ecological and taxonomic evaluations.
LIMNOLOGY AND OCEANOGRAPHY LETTERS
(2023)
Article
Water Resources
Meryem Jabrane, Abdessamad Touiouine, Vincent Valles, Abdelhak Bouabdli, Said Chakiri, Ismail Mohsine, Youssouf El Jarjini, Moad Morarech, Yannick Duran, Laurent Barbiero
Summary: In France and Europe, the large number of groundwater bodies per administrative region complicates the management and monitoring of water quality for human consumption. However, a method using two databases and hierarchical clustering successfully established 20 homogeneous groups of groundwater bodies in the Occitanie region. The grouping did not result in significant loss of information or variation, and it allowed for targeted guidelines and recommendations for water quality management.
Article
Soil Science
Youssouf El Jarjini, Moad Morarech, Vincent Valles, Abdessamad Touiouine, Meryem Touzani, Youssef Arjdal, Abdoul Azize Barry, Laurent Barbiero
Summary: The salinity of estuarine areas in arid or semi-arid environments can reach high values, affecting the distribution of vegetation and soil surface characteristics. This study compared landscape units derived from satellite imagery and naturalistic environmental analysis with a systematic survey of salinity in a wadi estuary in northern Morocco. The results showed that 57-66% of the measurement points were correctly classified, indicating that salinity is a major factor in discriminating estuary zones.
Article
Marine & Freshwater Biology
Mauricio J. Machado, Rafael B. Dextro, Renata B. Cruz, Simone R. Cotta, Marli F. Fiore
Summary: This study evaluated the response of two cyanobacteria to non-biodegradable glitter particles. The results showed that high concentrations of glitter had a negative effect on one cyanobacteria strain and a positive effect on the other.
AQUATIC TOXICOLOGY
(2023)
Article
Environmental Sciences
Jordana Stein Rabelo, Edson Aparecido dos Santos, Edmar Isaias de Melo, Marcelo Gomes Marcal Vieira Vaz, Gilberto de Oliveira Mendes
Summary: Competition with weeds limits forest species development. Some herbicides have residual effects on the soil. This study evaluated the tolerance and degrading potential of fungi (Aspergillus niger, Penicillium pinophilum, and Trichoderma sp.) and bacteria (Bacillus subtilis, Pseudomonas sp., and Azospirillum brasilense) to herbicides. The tested herbicides had no significant effect on bacterial growth, and all fungi were tolerant to the herbicides. Trichoderma sp. showed increased growth in the presence of certain herbicides. The tested residual herbicides did not interfere with the growth of evaluated microorganisms.
Article
Environmental Sciences
Amauris Hechavarria-Hernandez, Jose Lucas Martins Viana, Laurent Barbiero, Ary Tavares Rezende-Filho, Celia Regina Montes, Adolpho Jose Melfi, Anne Helene Fostier
Summary: The presence of high arsenic concentrations in the soda lakes of the Pantanal wetland is a unique case of natural arsenic contamination in South America. This study investigates the speciation of arsenic in these lakes, particularly regarding changes related to the trophic status and seasonality. The results show that the speciation of arsenic varies seasonally according to the wet or dry periods and water levels, with different distribution patterns in eutrophic and oligotrophic soda lakes. Cyanobacteria or macrophytes/algae play a role in the biotransformation of arsenic through their metabolic and detoxification processes.
Article
Chemistry, Physical
Jennifer L. L. Cordoza, Percival Yang-Ting Chen, Linnea R. R. Blaustein, Stella T. T. Lima, Marli F. F. Fiore, Jonathan R. R. Chekan, Bradley S. S. Moore, Shaun M. K. McKinnie
Summary: Researchers have discovered and characterized the biosynthetic pathway of guanitoxin, a neurotoxin containing a cyclic arginine derivative. By comparing the structures and activities, they have identified the amino acid residues that contribute to the catalytic mechanism. This study provides a better understanding of how nature produces cyclic arginine noncanonical amino acids and offers tools for their biocatalytic production and biological applications.
Article
Chemistry, Analytical
Carlos Eduardo Eismann, Amauri Antonio Menegario, Edson Geraldo de Oliveira Jr, Lucas Pellegrini Elias, Jose Lucas Martins Viana, Melina Borges Teixeira Zanatta, Laurent Barbiero, Anne Helene Fostier
Summary: The diffusive gradients in thin films (DGT) technique uses agarose as the hydrogel to immobilize a mixed binding layer of ZrO2 and Chelex 100, enabling the simultaneous determination of labile cations and anions in aquatic systems. The proposed device reduces costs and simplifies the manufacturing process compared to previous approaches using polyacrylamide. The device was evaluated through recovery tests, deployment curves, and pH/ionic strength tests, and the concentrations of trace elements determined in river water using the proposed devices agreed with those determined by commercial devices.
ANALYTICAL METHODS
(2023)
