Results 91 to 100 of about 2,158,587 (221)

Photophobotaxis of single‐celled and filamentous cyanobacteria

Photochemistry and Photobiology, EarlyView.
LED illumination from below induces central accumulation of cyanobacterial species. Abstract Phototaxis refers to an organism's movement toward a light source, while photophobotaxis involves movement into illuminated regions. Although phototaxis in cyanobacteria has been widely studied, photophobotaxis has been investigated in only a few species.
Maria Sinetova, Nina Spohrer, David Gabrielyan, Luke Lehmann, Julian Breinich, Dmitry Los, Tilman Lamparter   +6 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

Role of two NtcA-binding sites in the complex ntcA gene promoter of the heterocyst-forming cyanobacterium Anabaena sp. strain PCC 7120 [PDF]

, 2015
Anabaena sp. strain PCC 7120 is a filamentous cyanobacterium that fixes N2 in specialized cells called heterocysts, which differentiate from vegetative cells in a process that requires the nitrogen control transcription factor NtcA.
Flores, Enrique, Herrero, Antonia, Muro-Pastor, Alicia M., Olmedo-Verd, E., Valladares, Ana   +4 more
core   +2 more sources

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

Heterocyst differentiation and pattern formation in cyanobacteria: a chorus of signals [PDF]

Molecular Microbiology, 2005
SummaryHeterocyst differentiation in filamentous cyanobacteria provides an excellent prokaryotic model for studying multicellular behaviour and pattern formation. In Anabaena sp. strain PCC 7120, for example, 5–10% of the cells along each filament are induced, when deprived of combined nitrogen, to differentiate into heterocysts.
Zhang, C.-C., Laurent, S., Sakr, S., Peng, Ling, Bédu, S.   +4 more
openaire   +3 more sources

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

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

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

Manipulation of Pattern of Cell Differentiation in a hetR Mutant of Anabaena sp. PCC 7120 by Overexpressing hetZ Alone or with hetP

Life, 2018
In the filamentous cyanobacterium, Anabaena sp. PCC 7120, single heterocysts differentiate at semi-regular intervals in response to nitrogen stepdown. HetR is a principal regulator of heterocyst differentiation, and hetP and hetZ are two genes that are ...
He Zhang, Xudong Xu
doaj   +1 more source

A storage-based model of heterocyst commitment and patterning in cyanobacteria

, 2013
When deprived of fixed nitrogen (fN), certain filamentous cyanobacteria differentiate nitrogen-fixing heterocysts. There is a large and dynamic fraction of stored fN in cyanobacterial cells, but its role in directing heterocyst commitment has not been ...
Brown, Aidan I, Rutenberg, Andrew D
core   +1 more source