Article
Chemistry, Multidisciplinary
Xiongxin Peng, Shuang Gai, Kui Cheng, Fan Yang
Summary: The study conducted hydrothermal humification kinetics experiments using corn straw as raw material and employed characterization techniques such as ultra-performance liquid chromatography, nuclear magnetic resonance spectroscopy, and Fourier-transform ion cyclotron resonance mass spectrometry to determine the formation mechanism of artificial humic substances (A-HS). The results showed that in an alkaline environment, rapid dissociation of lignocellulose can occur, with cellulose and hemicellulose being hydrolyzed into glucose and xylose, further dehydrated to form 5-hydroxy furfural and furfural, and then rehydrated to synthesize levulinic acid and other small molecular acids. These small precursors then combine with lignin fragments to form fulvic acids, humic acids, and even humin. The proposed mechanism of hydrothermal humification is of great significance for the design, synthesis, and application of A-HS in sustainable agriculture.
Article
Soil Science
Wambura E. Chacha, Huu-Tuan Tran, William R. Scarlett, Justin M. Hutchison
Summary: Soil microorganisms and their corresponding proteins and enzymes play crucial roles in the degradation of micro-and nano-pollutants. A new protein soil extraction protocol was developed to extract active intracellular enzymes involved in the perchlorate degradation pathway. The optimized indirect method achieved extraction efficiencies of 15.7% for active enzyme and 3.3% for total protein. Different buffer concentrations were tested for enhancing enzyme extraction efficiency, with the trade-off between activity and quality of recovered enzymes considered.
APPLIED SOIL ECOLOGY
(2023)
Article
Agronomy
Maria Roulia, Evangelia Kontezaki, Nikolaos Kalogeropoulos, Konstantinos Chassapis
Summary: This study discusses a new, simple, and rapid method for the biotechnology treatment of raw olive oil mill waste, utilizing microaerobic composting processes and a tailor-made biocatalyst. The bioprocess led to a significant reduction in polyphenols and an increased humic substances content, making the OMW compost stable, free of toxic compounds and pathogens, and rich in cenose, vital for soil fertility in organic farming. Applications confirmed the suitability of the product as a first-class soil conditioner.
Article
Forestry
Miaojing Meng, Chong Li, Youpeng Zhao, Jie Lin, Xin Liu, Zhaohui Jia, Jinchi Zhang
Summary: This study investigated the effects of forest conversion on soil aggregate stability. The results showed that forest conversion had significant effects on soil aggregates, but no significant effects on soil's physical properties and humic substances. Moreover, different types of forest conversion had different impacts on soil stability.
Review
Biochemistry & Molecular Biology
Miguel Baltazar, Sofia Correia, Kieran J. Guinan, Neerakkal Sujeeth, Radek Braganca, Berta Goncalves
Summary: Plant biostimulants are recognized as a sustainable solution to meet the demands for higher agricultural output with lower resources, offering potential benefits in improving plant growth, increasing crop production and quality, and alleviating stress effects. However, challenges arise from the multi-molecular nature and varying composition of commercially available biostimulants when attempting to elucidate their underlying mechanisms. Recent studies at the molecular level have started to reveal the pathways triggered by certain biostimulants at the cellular and gene level, which could lead to further refinement of these treatments.
Article
Forestry
Yu Tan, Kaijun Yang, Zhenfeng Xu, Li Zhang, Han Li, Chengming You, Bo Tan
Summary: Soil fauna play vital roles in litter humification in cold forests, with their contributions varying among species and seasons.
Article
Engineering, Environmental
Jerzy Weber, Elzbieta Jamroz, Andrzej Kocowicz, Magdalena Debicka, Jakub Bekier, Irmina Cwielag-Piasecka, Aleksandra Ukalska-Jaruga, Lilla Mielnik, Romualda Bejger, Maria Jerzykiewicz
Summary: Humin is an important fraction of humic substances that plays a crucial role in the fate of organic and inorganic xenobiotics contaminating the environment. Various methods of humin fraction isolation have different limitations, but a useful procedure involves removing soluble organic and mineral components from the soil to isolate humin. This modified method shows high efficiency and recovery in isolating humin from soil.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2022)
Article
Environmental Sciences
Wei-xia Wu, Cai-hong Huang, Zhu-rui Tang, Xiang-qin Xia, Wei Li, Yan-hong Li
Summary: The humic substances (HS) - mediated electron transfer process plays a vital role in reducing and degrading pollutants and improving soil quality. This study investigates the relationship between soil microenvironment, HS and electron transfer capacity (ETC). The results show significant differences in ETC and the composition of HS components in soils from different regions and depths.
ENVIRONMENTAL RESEARCH
(2022)
Review
Horticulture
Maria Celeste Dias, Marcia Araujo, Sonia Silva, Conceicao Santos
Summary: Climatic extreme events pose a threat to agriculture, particularly in olive groves in the Mediterranean. Both traditional and intensive olive cultivation systems face increased demands for water and agrochemicals. Finding sustainable alternatives, such as biostimulants, is urgent. Biostimulants can enhance plant yield, quality,and stress tolerance, while reducing water and agrochemical requirements.
Article
Environmental Sciences
Erika Jez, Carlo Bravo, Domen Lestan, Simon Gluhar, Ladislau Martin-Neto, Maria De Nobili, Marco Contin
Summary: The study found that CaEDTA remediation significantly decreased the free fraction of humic acids in soils contaminated with potentially toxic metals, while the bound fraction of humic acids and fulvic acids remained unchanged. Disturbance of intermolecular bonds during remediation affected the composition of the free humic acid fraction, confirming a selective removal of non-radical molecules such as carbohydrates while increasing the concentration of free radicals in acidic soil. The restoration of free humic fractions is likely to be a long-term process, indicating that CaEDTA soil washing is moderately conservative in terms of soil organic matter remediation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Kanika Sarkar, Gengrui Wei, Maulana Yusup Rosadi, Naoki Murata, Fusheng Li
Summary: The study revealed that chlorine concentrations and contact time significantly influenced the characteristics of DOM, with high chlorine concentrations leading to an increase in humic-like and fulvic-like substances in the DOM, while chlorine-free treatment enriched the DOM with protein-like substances.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Agronomy
Maysa Mathias Alves Pereira, Ludmila Caproni Moraes, Maria Cristina Troya Mogollon, Carlos Junio Falconi Borja, Mateus Duarte, Victor Hugo Teixeira Buttros, Jose Magno Queiroz Luz, Moacir Pasqual, Joyce Doria
Summary: Based on the concepts of circular economy and bioeconomy, the reuse of agrifood residues through vermicomposting can help solve environmental problems and contribute to sustainable production systems. The study focused on identifying, quantifying and analyzing the physical, chemical, hormonal, amino acid content and microbial biodiversity of different vermicompost formulations. The results showed that the vermicomposts met the minimum requirements for organic fertilizer and had differences in parameters such as phosphorus, auxin, tryptophan, organic matter, and humic and fulvic acids. Inoculation with microorganisms from native forest promoted biodiversity and reduced heavy metal levels in the compost. Vermicomposting is concluded to be a potential tool in reusing agri-food residues and maintaining soil biodiversity and fertility.
Article
Agronomy
Dorota Pikula, Olga Ciotucha
Summary: Understanding the transformation processes of organic matter in soil is crucial for managing soil organic carbon dynamics. This study found that both crop rotation and manure fertilization had significant effects on soil organic matter fractions and humus humification index. Additionally, mineral nitrogen fertilization and pH conditions also played a role in the composition of humus compounds in the soil.
Article
Environmental Sciences
R. Lopez, J. Antelo, A. C. Silva, F. Bento, S. Fiol
Summary: This study analyzed compost samples from different sources and treated with different composting methods to investigate their chemical composition, physicochemical, and acid-base properties, revealing correlations and testing the potential value of compost as amendments. The application of compost improved soil pH, organic matter and nutrient content, and promoted seed germination and root growth in a mining area.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Agronomy
Michal Dudek, Beata Labaz, Magdalena Bednik, Agnieszka Medynska-Juraszek
Summary: Unfavorable changes in both quantity and quality of soil organic matter are caused by degradation processes, such as water erosion resulting from intensive agricultural activities. It is therefore urgent to identify appropriate indicators for soil quality or degradation. This study investigated the use of humic and fulvic fractions in determining the processes of soil formation and degradation rates in chernozemic soils. The results showed that the HA/FA ratio was higher in non-eroded and accumulative soils compared to eroded or forest soils, indicating a potential relationship between land usage and degradation rate.
Article
Agronomy
F. Mercl, V. Tejnecky, M. Sagova-Mareckova, K. Dietel, J. Kopecky, K. Brendova, M. Kulhanek, Z. Kosnar, J. Szakova, P. Tlustos
Article
Ecology
Jan Hubert, Marta Nesvorna, Jan Kopecky, Tomas Erban, Pavel Klimov
Article
Microbiology
Pavla Madrova, Tomas Vetrovsky, Marek Omelka, Michal Grunt, Yvona Smutna, Daria Rapoport, Marek Vach, Petr Baldrian, Jan Kopecky, Marketa Sagova-Mareckova
FRONTIERS IN MICROBIOLOGY
(2018)
Article
Entomology
Jitka Stara, Stano Pekar, Marta Nesvorna, Tomas Erban, Hana Vinsova, Jan Kopecky, Ivo Doskocil, Martin Kamler, Jan Hubert
EXPERIMENTAL AND APPLIED ACAROLOGY
(2019)
Article
Biotechnology & Applied Microbiology
A. Buresova, J. Kopecky, V. Hrdinkova, Z. Kamenik, M. Omelka, M. Sagova-Mareckova
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2019)
Article
Microbiology
S. Pereira, A. Buresova, J. Kopecky, P. Madrova, A. Aupic-Samain, C. Fernandez, V. Baldy, M. Sagova-Mareckova
FEMS MICROBIOLOGY ECOLOGY
(2019)
Article
Multidisciplinary Sciences
Jan Kopecky, Zuzana Samkova, Ensyeh Sarikhani, Martina Kyselkova, Marek Omelka, Vaclav Kristufek, Jiri Divis, Genevieve G. Grundmann, Yvan Moenne-Loccoz, Marketa Sagova-Mareckova
SCIENTIFIC REPORTS
(2019)
Article
Microbiology
Daria Rapoport, Marketa Sagova-Mareckova, Ivo Sedlacek, Jan Provaznik, Stanislava Kralova, Dinko Pavlinic, Vladimir Benes, Jan Kopecky
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2020)
Article
Ecology
Andrea Buresova, Vaclav Tejnecky, Jan Kopecky, Ondrej Drabek, Pavla Madrova, Nada Rerichova, Marek Omelka, Petra Krizova, Karel Nemecek, Thomas B. Parr, Tsutomu Ohno, Marketa Sagova-Mareckova
Summary: The study compared the soil forming processes and microbial community structures under beech and spruce forests, finding higher litter decomposition rates in beech forests and lower rates in spruce forests.
EUROPEAN JOURNAL OF SOIL BIOLOGY
(2021)
Review
Engineering, Environmental
M. Sagova-Mareckova, J. Boenigk, A. Bouchez, K. Cermakova, T. Chonova, T. Cordier, U. Eisendle, T. Elersek, S. Fazi, T. Fleituch, L. Fruhe, M. Gajdosova, N. Graupner, A. Haegerbaeumer, A. -M. Kelly, J. Kopecky, F. Leese, P. Noges, S. Orlic, K. Panksep, J. Pawlowski, A. Petrusek, J. J. Piggott, J. C. S. Rusch, R. Salis, J. Schenk, K. Simek, A. Stovicek, D. A. Strand, M. I. Vasquez, T. Vralstad, S. Zlatkovic, M. Zupancic, T. Stoeck
Summary: The importance and potential of utilizing microbes as bioindicators in water quality monitoring are discussed in this review. Molecular methods have revealed microbial diversity and new metabolic pathways, which can improve our understanding of environmental processes, serving as a solid foundation for novel monitoring programs. Microbial community dynamics are highlighted as a missing link essential for comprehending rapid changes in aquatic ecosystem structure and function, suggesting they should be addressed in future environmental monitoring of freshwater ecosystems.
Article
Agronomy
Sagova-Mareckova Marketa, Ensyeh Sarikhani, Ondrej Daniel, Marek Omelka, Vaclav Kristufek, Jiri Divis, Jan Kopecky
Summary: The study on common scab of potatoes revealed the influence of plant-microbe-soil interactions on nitrogen, calcium, phosphorus and other nutrient contents affecting susceptibility to the disease. The diversity of bacteria was found to be positively correlated with disease severity, indicating interactions between pathogen populations and soil communities.
Article
Microbiology
Andrea Buresova-Faitova, Jan Kopecky, Marketa Sagova-Mareckova, Lise Alonso, Florian Vautrin, Yvan Moenne-Loccoz, Veronica Rodriguez-Nava
Summary: This study compared Actinobacteria communities in four French limestone caves and found significant differences in community composition influenced by anthropogenic activities. Different caves and areas within caves exhibited distinct Actinobacteria communities, with marked differences in species richness and composition.
Article
Soil Science
Tereza Patrmanova, Iva Krizkova, Daria Rapoport, Jan Kopecky, Sarka Hrychova, Marketa Sagova-Mareckova
Summary: This study explores the application of antagonistic strains to control common scab of potatoes and demonstrates their impact on soil microbial communities and host plant nutrition. One isolate shows significant reduction in the severity of common scab, while inoculation with these isolates leads to changes in host plant nutrition.
APPLIED SOIL ECOLOGY
(2022)
Article
Agronomy
Pavel Saska, Jan Kopecky, Marek Omelka, Alois Honek, Pavla Madrova, Petra Vokurkova, Zdenka Martinkova, Hana Foffova, Tereza Patrmanova, Marketa Sagova-Mareckova
Summary: This study compared the bacterial communities associated with seeds of seven weed species after burial in soil for two years and demonstrated the relationships between these changes and seed properties as well as attractiveness for a seed predator. The results showed that seed microbiomes remained specific after burial and contained taxa characteristic for both plant endophytes and insect guts. Changes in seed consumption were partially explained by bacterial communities and seed properties.
Article
Plant Sciences
Elodie Quer, Susana Pereira, Thomas Michel, Mathieu Santonja, Thierry Gauquelin, Guillaume Simioni, Jean-Marc Ourcival, Richard Joffre, Jean-Marc Limousin, Adriane Aupic-Samain, Caroline Lecareux, Sylvie Dupouyet, Jean-Philippe Orts, Anne Bousquet-Melou, Raphael Gros, Marketa Sagova-Mareckova, Jan Kopecky, Catherine Fernandez, Virginie Baldy
Summary: In Mediterranean ecosystems, projected rainfall reduction may alter plant-soil interactions, particularly litter decomposition and home field advantage. This study found that amplified drought conditions led to changes in litter quality and metabolomes, resulting in a slowdown of litter decomposition and loss of home field advantage in Mediterranean forests.
