Results 81 to 90 of about 1,262 (192)

Heterocyst Differentiation in Anabaena sp. UTCC-426 (Photograph: Mary Olaveson, University of Toronto Scarborough, Toronto, Ontario, Canada)

, 2013
Heterocyst Differentiation in Anabaena sp. UTCC-426 (Photograph: Mary Olaveson, University of Toronto Scarborough, Toronto, Ontario, Canada)
Ned S Wingreen (21365), Simon A Levin (17957)   +1 more
core   +1 more source

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

Characterization of a gene controlling heterocyst differentiation in the cyanobacterium Anabaena 7120. [PDF]

Genes & Development, 1991
Anabaena 7120 mutant 216 fails to differentiate heterocyst. We previously identified a 2.4-kb wild-type DNA fragment able to complement this mutant. We show here that the sequence of this fragment contains a single open reading frame (hetR), encoding a 299-amino-acid protein.
W J, Buikema, R, Haselkorn
openaire   +2 more sources

Amazonian Cyanobacteria as a Source of Bioactive Compounds With Antimicrobial and Cytotoxic Properties

Chemistry &Biodiversity, Volume 22, Issue 12, December 2025.
ABSTRACT Cyanobacteria are photosynthetic microorganisms known for producing diverse bioactive compounds. This study explores the bioactivity of extracts and fractions from Amazonian cyanobacteria and their pigment and phenolic compound production. A fraction from Synechococcus sp. CACIAM 05 showed cytotoxicity against hCMEC/D3 and MG‐63 cells.
Samuel Cavalcante do Amaral, Luciana Pereira Xavier, Mariana Reis, Rhuana V. Médice, Janaína Morone, Raquel Silva, João Morais, Vitor Vasconcelos, Agenor Valadares Santos   +8 more
wiley   +1 more source

Gene expression indicates a zone of heterocyst differentiation within the thallus of the cyanolichen Pseudocyphellaria crocata

, 2012
Development of the symbiotic association in the bipartite lichen Pseudocyphellaria crocata was investigated by characterizing two regions of the thallus. Thallus organization was examined using microscopy.
Wallace, EJS, Tina C. Summerfield, Dearden, PK, Elizabeth J. Duncan, Emma J. S. Wallace, Chua, JPS, Duncan, EJ, Jocelyn P. S. Chua, Jessica A. Yardley, Yardley, JA, Summerfield, TC, Peter K. Dearden   +11 more
core   +1 more source

NtcA-regulated heterocyst differentiation genes hetC and devB from Anabaena sp. strain PCC 7120 exhibit a similar tandem promoter arrangement [PDF]

, 2009
Transcription of the hetC gene, whose product is required for heterocyst differentiation, takes place from a long promoter region that includes the previously described HetR-independent, NtcA-activated promoter producing transcripts with a 5′ end ...
Flores, Enrique, Herrero, Antonia, Flores García, Enrique, Muro Pastor, María Isabel, Herrero Moreno, Antonia, Muro-Pastor, Alicia M.   +5 more
core   +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

Integrating phytoplankton phenology, traits, and model‐data fusion to advance bloom prediction

Limnology and Oceanography Letters, Volume 10, Issue 6, Page 815-834, December 2025.
Abstract While there is a diversity of approaches for modeling phytoplankton blooms, their accuracy in predicting the onset and manifestation of a bloom is still lagging behind what is needed to support effective management. We outline a framework that integrates trait theory and ecosystem modeling to improve bloom prediction.
Matthew R. Hipsey, Cayelan C. Carey, Justin D. Brookes, Michele A. Burford, Hoang V. Dang, Bas W. Ibelings, David P. Hamilton   +6 more
wiley   +1 more source

Taxonomic, phylogenetic and functional β‐diversity of stream algae is driven by the number of added nutrients and herbivory

Journal of Ecology, Volume 113, Issue 11, Page 3390-3405, November 2025.
Higher numbers of added nutrients (NAN) in treatment (T) relative to control (C) algal communities (1) and grazing (2) elevated taxonomic/phylogenetic nestedness (βNes) and functional gradient (βGra) components of β‐diversity. Herbivory favoured grazer‐resistant inferior competitors (2).
Sophia I. Passy, Chad A. Larson
wiley   +1 more source

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