Results 61 to 70 of about 1,898 (177)

Coming out of the cold: Vanadium is an important player in N‐fixation in warm tropical environments

Ecology, Volume 107, Issue 4, April 2026.
Abstract Nitrogen (N)‐fixation is a crucial source of reactive N in terrestrial environments. The nitrogenase enzyme (Nase), responsible for this conversion, has three isoforms: molybdenum (Mo)‐, vanadium (V)‐, and iron (Fe)‐Nases. The Mo‐Nase is found in all N‐fixers, but the distribution pattern and drivers of V‐ and Fe‐Nases remain poorly understood.
Ana Fávaro, Manuela Dal Forno, Daniel Stanton, Lara Cecília Oliveira Lourenço, Flávia de Freitas Coelho   +4 more
wiley   +1 more source

Endophytic Colonization of Rice (Oryza sativa L.) by the Symbiotic Strain Nostoc punctiforme PCC 73102

Molecular Plant-Microbe Interactions, 2020
Cyanobacteria are phototrophic microorganisms able to establish nitrogen-fixing symbiotic associations with representatives of all four of the major phylogenetic divisions of terrestrial plants.
Consolación Álvarez, José A. Navarro, Fernando P. Molina-Heredia, Vicente Mariscal   +3 more
doaj   +1 more source

Phytoplankton Biomass and Growth Limitation During Fifty Years of Reduced Nutrient Loading in Shallow Lake Arresø

Freshwater Biology, Volume 71, Issue 4, April 2026.
ABSTRACT We examine phytoplankton development and limitation in the 3‐m deep, well‐mixed water column of hypereutrophic, alkaline Lake Arresø during 50 years of improved sewage treatment that has reduced phosphorus (P) and nitrogen (N) availability and phytoplankton biomass.
Kaj Sand‐Jensen, Jonas Stage Sø, Theis Kragh   +2 more
wiley   +1 more source

Growth and reworking of freshwater microbially‐mediated carbonates in wind‐stressed lake margins (Lago Sarmiento, Southern Patagonia)

Sedimentology, Volume 73, Issue 3, Page 706-741, April 2026.
ABSTRACT Understanding the biotic and abiotic influences on the deposition and diagenesis of recent microbial carbonates is crucial for addressing the environmental and ecological significance of ancient organosedimentary structures. This study investigates these factors and their expression in the microstructure of Holocene tufa thrombolites from a ...
Paulo Quezada, Mauricio Calderón, Anelize Bahniuk, Carolina Henríquez, Tatiana Stepanenko, José Pérez‐Donoso, Nicolás Bruna, Larissa Santos, Guilherme Fedalto, Luis Mancini, Leonardo Fadel Cury   +10 more
wiley   +1 more source

Modifiers of heterocyst repression and spacing and formation of heterocysts without nitrogenase in the cyanobacterium Anabaena variabilis [PDF]

Journal of Bacteriology, 1979
Twelve amino acid analogs and related compounds were screened for their ability to induce heterocysts in ammonia-repressed, undifferential filaments of Anabaena variabilis. As has been previously described, 1-methionine-dl-sulfoximine induces both heterocysts and nitrogenase.
openaire   +2 more sources

Cyanobacteria as multifunctional bioinputs for sustainable intensification, soil health enhancement, and climate resilience in rice‐based cropping systems

Agrosystems, Geosciences &Environment, Volume 9, Issue 1, March 2026.
Abstract Ensuring food security goals through the provision of sustainable energy and food without compromising environmental sustainability is the current requirement amid threats from climate change, uncontrolled global population, and scarcity of natural resources.
Muhammad Shahbaz Farooq, Faiza Javed, Muhammad Uzair, Hossam S. El‐Beltagi, Usman Zulfiqar, Muhammad Ramzan Khan, Muhammad Yousuf, Muximilian Tuckner, Nazih Y. Rebouh, Mohd Asif Shah   +9 more
wiley   +1 more source

How Close We Are to Achieving Commercially Viable Large-Scale Photobiological Hydrogen Production by Cyanobacteria: A Review of the Biological Aspects

Life, 2015
Photobiological production of H2 by cyanobacteria is considered to be an ideal source of renewable energy because the inputs, water and sunlight, are abundant. The products of photobiological systems are H2 and O2; the H2 can be used as the energy source
Hidehiro Sakurai, Hajime Masukawa, Masaharu Kitashima, Kazuhito Inoue   +3 more
doaj   +1 more source

Microbial Metabolism and Disease Virulence Changes Across Day and Night in Coral Black Band Disease Lesions

Environmental Microbiology, Volume 28, Issue 2, February 2026.
Metatranscriptomic reads from black band disease (BBD) lesions derived from samples collected during the day and night were mapped to near‐complete BBD‐derived metagenome‐assembled genomes to profile diurnal metabolic shifts among key microbial groups. Photosynthesis genes from the cyanobacterium Roseofilum reptotaenium were highly expressed during the
Julia Y. Hung, Ira Cooke, Yui Sato, David J. Miller, David G. Bourne   +4 more
wiley   +1 more source

The DEAD-box RNA helicase CrhB exhibits pleiotropic functions in the cyanobacterium Anabaena PCC 7120

Water Biology and Security
DEAD-box RNA helicases play critical roles in regulating RNA metabolism and gene expression in both prokaryotes and eukaryotes. In the filamentous, heterocyst-forming cyanobacterium Anabaena PCC 7120, two DEAD-box helicases, CrhB and CrhC, are present ...
Wen-Kai Li, Tian-Cai Niu, Su-Juan Liu, Shi-Hao Jia, Jing Liu, Xiao-Li Zeng, Ju-Yuan Zhang, Cheng-Cai Zhang   +7 more
doaj   +1 more source

Ecological, Functional, and Phylogenetic Determinants of Cyanobacterial Biomineralisation

Environmental Microbiology Reports, Volume 18, Issue 1, February 2026.
Cyanobacteria contribute to the global carbon cycle by biomineralising CO2 into solid carbonates. Unlike photosynthesis, biomineralisation is a less‐understood, multifaceted and adaptive metabolic process with significant global impact. It involves cell wall structures, genetic factors, and metabolic pathways that enable mineral formation and help ...
Federica Tiddia, Sandeesha Kodru, Dario Piano, Domenica Farci   +3 more
wiley   +1 more source