Article
Environmental Sciences
Shanshan Meng, Youfen Qian, Xiaobo Liu, Yali Wang, Fasi Wu, Wanfu Wang, Ji-Dong Gu
Summary: The biodiversity and community structures of epilithic biofilms colonising outdoor stone dog sculptures were characterized. The biofilms showed high biodiversity, species richness, and differences in community compositions. The biofilms were found to be responsible for pigment production and mineral absorption from the stone. The presence of Acidiphilium indicated a positive correlation with acidic micro-environments and sulfuric acid corrosion.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Editorial Material
Geochemistry & Geophysics
Francois Renard
Summary: Reaction-induced fracturing occurs when fluid-rock interactions lead to the growth of a mineral phase, causing volume increase and perturbing stress field, potentially leading to fracturing in surrounding rock. This process may involve a positive feedback loop and intricate coupling between chemical and mechanical forces.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Microbiology
Gustavo Henrique Abrantes, Bjorn Gucker, Ronaldo Cesar Chaves, Iola Goncalves Boechat, Cleber Cunha Figueredo
Summary: In a Brazilian mountain area, epilithic biofilms on rocks have been found to be a significant source of nitrogen. The study measured the leaching of nitrate, ammonium, dissolved organic nitrogen (DON), and total dissolved nitrogen (TDN) during simulated rain events in different seasons. It was found that the leachate primarily consisted of DON, followed by nitrate and ammonium. The autotrophic epilithic community was mainly composed of non-heterocystous and heterocystous cyanobacteria. The study highlights the importance of conserving these biofilms and their habitats as they provide a crucial nitrogen source to surrounding ecosystems.
ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Geochemistry & Geophysics
Daniel Mege, Joanna Gurgurewicz, Matteo Massironi, Riccardo Pozzobon, Gloria Tognon, Maurizio Pajola, Livio L. Tornabene, Alice Lucchetti, Beatrice Baschetti, Joel M. Davis, Ernst Hauber, Barbara De Toffoli, Sylvain Doute, Laszlo Keszthelyi, Lucia Marinangeli, Jason Perry, Antoine Pommerol, Loredana Pompilio, Angelo Pio Rossi, Frank Seelos, Francesco Sauro, Ruth Ziethe, Gabriele Cremonese, Nicolas Thomas
Summary: We study the geological activity and water discharge in the Ladon basin on Mars using the data from ExoMars Trace Gas Orbiter/Color and Stereo Surface Imaging System. The combination of this data set with other data sets allows for effective geological mapping. We observe dark lobate flows and altered levels, indicating ultramafic rocks and potential hydrothermal activity. Additionally, kaolin minerals are detected, suggesting groundwater alteration. These findings suggest a coeval relationship between volcanism, tectonics, hydrothermal activity, and kaolinization in the Ladon basin on Mars.
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2023)
Article
Geosciences, Multidisciplinary
Oleg S. Vereshchagin, Olga V. Frank-Kamenetskaya, Dmitry Yu. Vlasov, Marina S. Zelenskaya, Oksana A. Rodina, Irina A. Chernyshova, Dmitry E. Himelbrant, Irina S. Stepanchikova, Sergey N. Britvin
Summary: Microorganisms play a vital role in settlement and biomineralization under extreme conditions. In this study, we examined biofilms in the extreme environment of Tolbachik Volcano area and identified microbial biomineralization. Our findings show that lichens promote oxalate biomineralization in an acidic environment, while cyanobacteria suppress carbonate biomineralization. Calcium and copper oxalates were found in lichen biofilms, with the intensity of biomineralization varying with lichen age. These results highlight the abundance of biomineralization in terrestrial environments and provide insights into microbial biomineralization mechanisms.
Article
Microbiology
Imran Khan, Sahib Zada, Muhammad Rafiq, Wasim Sajjad, Sumayya Zaman, Fariha Hasan
Summary: This study focused on isolating phosphate solubilizing bacteria from rocks in Murree, Pakistan. Three bacterial strains were found to have high phosphate solubilization abilities, potentially contributing to the weathering of rocks. These bacteria are capable of solubilizing inorganic phosphate through the production of organic acids, making them a promising biofertilizer to enhance overall crop performance.
ARCHIVES OF MICROBIOLOGY
(2022)
Article
Environmental Sciences
Sarah Schembri, Gabrielle Zammit
Summary: This research aims to increase knowledge about microbial communities in the coastal ecosystem around the Maltese islands. The study reveals highly diverse phototrophic communities using noninvasive sampling techniques and highlights the importance of a combined approach to supplement current knowledge about microbial biodiversity. Additionally, this study provides the first records of genetic sequences of microorganisms from the central Mediterranean coastline.
JOURNAL OF COASTAL RESEARCH
(2022)
Article
Microbiology
Naresh Kumar, Aniket Saraf, Sagarika Pal, Deeksha Mishra, Prashant Singh
Summary: This study isolated a dark-colored thin film of cyanobacteria growing on a submerged stone in Udhampur district, Jammu and Kashmir, India. The isolated strain was found to belong to a new genus, highlighting the need for further research in resolving taxonomic discrepancies.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2022)
Article
Environmental Sciences
D. Moraetis, A. S. Al-Suhai, B. Pracejus, K. Pyrgaki, A. Argyraki, D. Dermatas
Summary: The study revealed variations in leaching and environmental immobilization abilities of Cr(VI) in different soil types, influenced by sunlight conditions and soil magnetic components.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2021)
Article
Environmental Sciences
Cedric Hubas, Dominique Monti, Jean-Michel Mortillaro, Sylvie Augagneur, Anne Carbon, Robert Duran, Solange Karama, Tarik Meziane, Patrick Pardon, Theo Risser, Nathalie Tapie, Najet Thiney, Helene Budzinski, Beatrice Lauga
Summary: The rivers in Guadeloupe and Martinique have high levels of chlordecone contamination, which has a significant impact on both aquatic ecosystems and human health. The biochemical composition and microbial community of epilithic biofilms are closely related to chlordecone pollution, and changes in these factors affect the viscoelastic properties of the biofilms. Microorganisms have been found to implement a strategy to scavenge chlordecone, providing new insights into the role of extracellular polymeric substances in microbial adaptation to chlordecone-polluted environments.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Energy & Fuels
Wenwen Li, Jian Cao, Wenxuan Hu, Yong Tang, Baoli Xiang, Wanyun Ma, Wenjun He, Keyu Tao, Yingqi Wang
Summary: Saline lacustrine fine-grained rocks are important hydrocarbon source rocks that host large shale oil accumulations worldwide. The process and mechanism of hydrocarbon generation and accumulation in such rocks are not clear. This study used sequential extraction to analyze source rock samples from the alkaline lacustrine strata of the Junggar Basin in China, and found that low-maturity source rocks underwent one stage of hydrocarbon generation and associated shale oil accumulation, while high-maturity source rocks experienced multi-stage hydrocarbon generation and accumulation. The results suggest that hydrocarbon generation in these alkaline lacustrine source rocks involves multiple sources and stages, contributing to the abundant shale oil resources in the study area.
Editorial Material
Multidisciplinary Sciences
Jef Huisman, Elke Dittmann, Jutta Fastner, J. Merijn Schuurmans, J. Thad Scott, Dedmer B. Van de Waal, Petra M. Visser, Martin Welker, Ingrid Chorus
Summary: Hellweger et al. suggest that phosphorus limitation will lead to higher concentrations of cyanobacterial toxins in lakes. However, their assumptions about molecular, physiological, and ecological mechanisms lack support and contradict other studies. It is concluded that their take-home message about increased toxicity in Lake Erie due to phosphorus load reduction is fundamentally flawed.
Article
Chemistry, Multidisciplinary
Lei Ouyang, Fangfang Song, Caiyue Yu, Lijin Huang, Qin Shuai
Summary: A new method using serpentine and Fe(ii) for coagulating arsenic was developed, achieving excellent removal efficiency (>99%) and satisfactory stability of the sediments for As(v) and As(iii). Mechanism study revealed that hydroxyls generated by surface hydrolysis of serpentine mediated active iron hydroxides for arsenic adsorption, while Fe-As and Mg-As chemical interaction contributed to arsenic stabilization.
CHEMICAL COMMUNICATIONS
(2023)
Article
Microbiology
Maija Nuppunen-Puputti, Riikka Kietaevaeinen, Mari Raulio, Aino Soro, Lotta Purkamo, Ilmo Kukkonen, Malin Bomberg
Summary: The study investigated the morphology and attachment strategies of deep subsurface microbial communities on rock surfaces, revealing diverse microbial cell morphologies such as outer membrane vesicles and tubular cell structures on mica schist surfaces. Amplicon sequencing showed that Pseudomonas, Desulfosporosinus, Hydrogenophaga, and Brevundimonas genera dominated the bacterial communities. The results also indicated the potential for these microbes to shift between multiple energy or carbon sources and adapt to oligotrophic environments.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Biodiversity Conservation
Nam-Ju Lee, Do-Hyun Kim, Eun-Chan Yang, Ok-Min Lee
Summary: A soil cyanobacterium, FBCC-A195, was isolated from the soil underneath the Jangnak Bridge in Republic of Korea. The study of FBCC-A195 included its morphological features observed under light and transmission electron microscopy, as well as its genetic characteristics through analysis of 16S rRNA and 16S-23S ITS. Based on these findings, FBCC-A195 was classified as a unique and novel species, Katagnymene terrestris, within the Gomontiellaceae family.
Article
Biotechnology & Applied Microbiology
Tomas Hauer, Petr Capek, Petra Boehmova
FOLIA MICROBIOLOGICA
(2016)
Article
Ecology
Katerina Capkova, Tomas Hauer, Klara Rehakova, Jiri Dolezal
Article
Plant Sciences
Latlra Gonzalez-Resendiz, Jeffrey R. Johansen, Luisa Alba-Lois, Claudia Segal-Kischinevzky, Viviana Escobar-Sanchez, Luis F. Jimenez Garcia, Tomas Hauer, Hilda Leon-Tejera
Article
Environmental Sciences
Fatemeh Heidari, Hossein Riahi, Mahmoud Reza Aghamiri, Farideh Zakeri, Zeinab Shariatmadari, Tomas Hauer
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
(2018)
Article
Plant Sciences
Radka Muhlsteinova, Tomas Hauer, Paul De Ley, Nicole Pietrasiak
Article
Multidisciplinary Sciences
Jeffrey R. Johansen, Jan Mares, Nicole Pietrasiak, Marketa Bohunicka, Jan Zima, Lenka Stenclova, Tomas Hauer
Article
Plant Sciences
Fatemeh Heidari, Jan Zima, Hossein Riahi, Tomas Hauer
Article
Plant Sciences
Chase Kilgore, Jeffrey R. Johansen, Truc Mai, Tomas Hauer, Dale A. Casamatta, Christopher A. Sheil
Article
Plant Sciences
Jan Mares, Jeffrey R. Johansen, Tomas Hauer, Jan Zima, Stefano Ventura, Oana Cuzman, Bruno Tiribilli, Jan Kastovsky
JOURNAL OF PHYCOLOGY
(2019)
Article
Multidisciplinary Sciences
Paulina Nowicka-Krawczyk, Radka Muhlsteinova, Tomas Hauer
SCIENTIFIC REPORTS
(2019)
Article
Biology
Drahos Blanar, Anna Guttova, Ivan Mihal, Vitezslav Plasek, Tomas Hauer, Zdenek Palice, Karol Ujhazy
Article
Biochemistry & Molecular Biology
Radka Hauerova, Tomas Hauer, Jan Kastovsky, Jiri Komarek, Olga Lepsova-Skacelova, Jan Mares
Summary: Recent research revealed that the previously thought similar Tenebriella actually belongs to a new genus and is capable of forming prominent microbial mats. Molecular phylogenetics analysis identified unique morphological and ecological characteristics of Tenebriella, leading to the recognition of two new species within this genus.
MOLECULAR PHYLOGENETICS AND EVOLUTION
(2021)
Article
Multidisciplinary Sciences
Somayeh Rasouli-Dogaheh, Jiri Komarek, Thomrat Chatchawan, Tomas Hauer
Summary: A new taxon of simple trichal cyanobacteria, Thainema gen. nov., was discovered from a wetland in Thailand. This novel taxon shares similar ecological habitats with previously classified strains.
Article
Multidisciplinary Sciences
Jungmoo Huh, Jin Zhang, Radka Hauerova, Joseph Lee, Saqlain Haider, Mei Wang, Tomas Hauer, Ikhlas A. Khan, Amar G. Chittiboyina, Nirmal D. Pugh
Summary: This research aimed to advance the standardization technology for commercially cultivated Limnospira. Quantitative methods were established to detect fatty acids as potential chemical markers and immune-enhancing activity. The results showed a significant correlation between fatty acid content and biological activity, and a large variation in fatty acid content and activity among different samples. Therefore, the use of standardization methods is crucial in the production and scientific research of Limnospira to ensure consistency and accuracy.
SCIENTIFIC REPORTS
(2022)
Article
Plant Sciences
Somayeh Rasoli-dogaheh, Mostafa Noroozi, Javad Khansha, Mohammad Ali Amoozegar, Rezvan Rahimi, Mahdi Moshtaghi Nikou, Tomas Hauer
Summary: A study on the diversity of cyanobacteria in the rainwater basin of the Persian Gulf region found a novel taxon, Khargia iranica, on Kharg Island. Similar strains were also found in South Italy and India, leading to the recognition of the new genus Khargia. Different analytical methods were used to identify and classify the new species.
