Results 31 to 40 of about 1,898 (177)
Microbiology Spectrum, 2021 In Anabaena variabilis, the nif1 genes, which are activated by CnfR1, produce a Mo-nitrogenase that is expressed only in heterocysts. Similarly, the nif2 genes, which are activated by CnfR2, make a Mo-nitrogenase that is expressed only in anaerobic ...
Brenda S. Pratte, Teresa Thiel
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Journal of Freshwater EcologyThe present study investigated the monthly dynamics of algal diversity in relation to the physicochemical parameters of the Dor River, a key freshwater tributary of the Indus Basin in Khyber Pakhtunkhwa, Pakistan.
Zain ul Abidin +2 more
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Antenna Modification Leads to Enhanced Nitrogenase Activity in a High Light-Tolerant Cyanobacterium
mBio, 2021 Biological nitrogen fixation is an energy-intensive process that contributes significantly toward supporting life on this planet. Among nitrogen-fixing organisms, cyanobacteria remain unrivaled in their ability to fuel the energetically expensive ...
Anindita Bandyopadhyay +4 more
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New Phytologist, EarlyView.Kimmerera cyanifera gen. et sp. nov. with associated cyanobacteria, holotype UWBM 116051. Summary Through symbiotic associations with microbes, mosses play many important ecological roles in terrestrial ecosystems, such as facilitating trophic interactions and nitrogen cycling.
Zane Walker +4 more
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Thylakoid membrane function in heterocysts
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 2016 Multicellular cyanobacteria form different cell types in response to environmental stimuli. Under nitrogen limiting conditions a fraction of the vegetative cells in the filament differentiate into heterocysts. Heterocysts are specialized in atmospheric nitrogen fixation and differentiation involves drastic morphological changes on the cellular level ...
Magnuson, Ann, Cardona, Tanai
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Control of heterocyst and nitrogenase synthesis in cyanobacteria [PDF]
Journal of Bacteriology, 1979 The development of the heterocyst by filamentous nitrogen-fixing cyanobacteria provides an attractive model system for studying cellular differentiation. Heterocyst synthesis is repressed by the presence of exogenous combined nitrogen. In this report, it is shown that the tryptophan analog, D,L-7-azatryptophan (Aza-T), is capable of relieving the ...
G, Stacey +3 more
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EcoMat, Volume 8, Issue 9, September 2026.A 3D‐printed polypyrrole/reduced graphene oxide (PPy/rGO) lattice anode with high porosity enhances biophotovoltaic (BPV) power density and current density by coordinating biofilm adhesion, light penetration, and endogenous mediator diffusion. Optimized PPy electropolymerization maximizes photocurrent and cell–electrode affinity.
Jinwook Moon +6 more
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Maintenance of heterocyst patterning in a filamentous cyanobacterium [PDF]
Journal of Biological Dynamics, 2010 In the absence of sufficient combined nitrogen, some filamentous cyanobacteria differentiate nitrogen-fixing heterocysts at approximately every 10th cell position. As cells between heterocysts grow and divide, this initial pattern is maintained by the differentiation of a single cell approximately midway between existing heterocysts.
Zhu, Mei +2 more
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MicrobiologyOpen, 2019 The nitrogenase complex in the heterocysts of the filamentous freshwater cyanobacterium Anabaenasp. PCC 7120 fixes atmospheric nitrogen to allow diazotrophic growth.
Dmitry Shvarev +2 more
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BMC Genomics, 2011 Background Cyanobacteria are potential sources of renewable chemicals and biofuels and serve as model organisms for bacterial photosynthesis, nitrogen fixation, and responses to environmental changes. Anabaena (Nostoc) sp.
Head Steven R +3 more
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