Results 81 to 90 of about 2,612 (190)

Vegetative cells may perform nitrogen fixation function under nitrogen deprivation in Anabaena sp. strain PCC 7120 based on genome-wide differential expression analysis.

PLoS ONE, 2021
Nitrogen assimilation is strictly regulated in cyanobacteria. In an inorganic nitrogen-deficient environment, some vegetative cells of the cyanobacterium Anabaena differentiate into heterocysts.
Hongli He, Runyu Miao, Lilong Huang, Hongshan Jiang, Yunqing Cheng   +4 more
doaj   +1 more source

A Long‐Standing Taxonomic Puzzle: Species Delimitation and Phylogenetic Analysis Reveal New Findings in Neogoniolithon (Spongitidaceae, Corallinophycidae and Rhodophyta) From the Southwestern Atlantic

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 10, October 2025.
ABSTRACT In the first study on Neogoniolithon species for the Southwestern Atlantic Ocean, based on both molecular (COI‐5P, psbA and SSU rDNA) and morpho‐anatomical data, three taxa were identified for the Brazilian coast, including two new species. DNA‐based species delimitation methods distinguished Neogoniolithon crypticum sp. nov.
Priscila Jesus, Iara Costa, Marcos Nunes, Marina Sissini, Paulo Horta, Maria Barros‐Barreto   +5 more
wiley   +1 more source

Role of Two Cell Wall Amidases in Septal Junction and Nanopore Formation in the Multicellular Cyanobacterium Anabaena sp. PCC 7120

Frontiers in Cellular and Infection Microbiology, 2017
Filamentous cyanobacteria have developed a strategy to perform incompatible processes in one filament by differentiating specialized cell types, N2-fixing heterocysts and CO2-fixing, photosynthetic, vegetative cells. These bacteria can be considered true
Jan Bornikoel, Alejandro Carrión, Qing Fan, Enrique Flores, Karl Forchhammer, Vicente Mariscal, Conrad W. Mullineaux, Rebeca Perez, Nadine Silber, C. Peter Wolk, Iris Maldener   +10 more
doaj   +1 more source

Functional dissection and evidence for intercellular transfer of the heterocyst‐differentiation PatS morphogen [PDF]

Molecular Microbiology, 2013
SummaryThe formation of a diazotrophic cyanobacterial filament represents a simple example of biological development. In Anabaena, a non‐random pattern of one nitrogen‐fixing heterocyst separated by about 10 photosynthetic vegetative cells results from lateral inhibition elicited by the cells differentiating into heterocysts. Key to this process is the
Corrales-Guerrero, Laura, Mariscal, Vicente, Flores, Enrique, Herrero, Antonia   +3 more
openaire   +3 more sources

The smallest known genomes of multicellular and toxic cyanobacteria: comparison, minimal gene sets for linked traits and the evolutionary implications. [PDF]

PLoS ONE, 2010
Cyanobacterial morphology is diverse, ranging from unicellular spheres or rods to multicellular structures such as colonies and filaments. Multicellular species represent an evolutionary strategy to differentiate and compartmentalize certain metabolic ...
Karina Stucken, Uwe John, Allan Cembella, Alejandro A Murillo, Katia Soto-Liebe, Juan J Fuentes-Valdés, Maik Friedel, Alvaro M Plominsky, Mónica Vásquez, Gernot Glöckner   +9 more
doaj   +1 more source

Formation and maintenance of nitrogen-fixing cell patterns in filamentous cyanobacteria [PDF]

, 2016
Cyanobacteria forming one-dimensional filaments are paradigmaticmodel organisms of the transition between unicellular andmulticellular living forms. Under nitrogen-limiting conditions, infilaments of the genus Anabaena, some cells differentiate into ...
Ares García, Saúl, Muñoz-García, Javier   +1 more
core   +2 more sources

Towards the control of biofilm formation in Anabaena (Nostoc) sp. PCC7120: novel insights into the genes involved and their regulation

New Phytologist, Volume 247, Issue 4, Page 1805-1825, August 2025.
Summary Cyanobacteria are major components of biofilms in light‐exposed environments, contributing to nutrient cycling, nitrogen fixation and global biogeochemical processes. Although nitrogen‐fixing cyanobacteria have been successfully used in biofertilization, the regulatory mechanisms underlying biofilm formation remain poorly understood.
Irene Olivan‐Muro, Jorge Guío, Germán Alonso‐Tolo, Emma Sevilla, María F. Fillat   +4 more
wiley   +1 more source

ABC Transporter Required for Intercellular Transfer of Developmental Signals in a Heterocystous Cyanobacterium [PDF]

, 2015
In the filamentous cyanobacterium Anabaena, patS and hetN encode peptide-derived signals with many of the properties of morphogens. These signals regulate the formation of a periodic pattern of heterocysts by lateral inhibition of differentiation. Here
Callahan, Sean M., Higa, Kelly C., Rivers, Orion S., Videau, Patrick   +3 more
core   +2 more sources

Biological Routes for Biohydrogen Production: A Clean and Carbon‐Free Fuel

Biotechnology Journal, Volume 20, Issue 7, July 2025.
Graphical Abstract and Lay Summary Biological routes for hydrogen (H2) production are mainly classified into four pathways: 1) direct bio‐photolysis, 2) indirect bio‐photolysis, 3) photo‐fermentation, and 4) dark fermentation. Of these pathways, dark fermentation produces the highest levels of H2 production.
Minseok Cha, Min‐Seo Park, Soo‐Jung Kim   +2 more
wiley   +1 more source

NsrR1, a Nitrogen stress-repressed sRNA, contributes to the regulation of nblA in Nostoc sp. PCC 7120 [PDF]

, 2018
Small regulatory RNAs (sRNAs) are currently considered as major post-transcriptional regulators of gene expression in bacteria. The interplay between sRNAs and transcription factors leads to complex regulatory networks in which both transcription factors
Muro Pastor, Alicia María, Vioque Peña, Agustín, Álvarez Escribano, Isidro   +2 more
core   +3 more sources