Results 101 to 110 of about 138,443 (212)

Identification of cyanobacteria inhabiting paddy fields in intermediate zone and dry zone of Sri Lanka

Tropical Agricultural Research, 2018
Cyanobacteria have the ability to fix atmospheric nitrogen to plant available forms; thus, useful in producing bio-fertilizers especially for rice cultivation. In this study, cyanobacteria were isolated from soil samples collected from 23 paddy fields in
R. P. U. I. Amarawansa, B. L. W. K. Balasooriya, W. S. Dandeniya, B. Suganthan, T. Dasanyaka   +4 more
doaj   +1 more source

Comparison of Envelope-Related Genes in Unicellular and Filamentous Cyanobacteria

Comparative and Functional Genomics, 2007
To elucidate the evolution of cyanobacterial envelopes and the relation between gene content and environmental adaptation, cell envelope structures and components of unicellular and filamentous cyanobacteria were analyzed in comparative genomics. Hundreds of envelope biogenesis genes were divided into 5 major groups and annotated according to their ...
Yang, Yu, Qin, Song, Zhao, Fangqing, Chi, Xiaoyuan, Zhang, Xiaowen   +4 more
openaire   +2 more sources

Trait‐based responses of nitrogen‐fixing cyanobacteria to nitrogen limitation and light availability: Insights from 45 years of monitoring

Limnology and Oceanography, Volume 71, Issue 8, August 2026.
Abstract The degree to which N2‐fixation compensates for reduced external nitrogen loading has significant implications for eutrophication recovery. We analyzed 45 years of monitoring data from the shallow, polymictic Lake Müggelsee during which external P‐ and N‐loading declined by about 80% and there were extended periods of N‐limitation in summer ...
Jordan A. Facey, Jan Köhler
wiley   +1 more source

Transient Ecological Niches for Diazotrophs in Upwelling Bays

Journal of Geophysical Research: Oceans, Volume 131, Issue 8, August 2026.
Abstract Diazotrophs, microorganisms capable of fertilizing the ocean through biological nitrogen fixation (BNF), are widespread in the oceans, including upwelling bays. However, their ability to respond to short‐lived upwelling pulses, lasting only a few days, remains poorly understood. To investigate diazotrophy across temporal scales, we analyzed 18 
D. Fernández‐Román, M. Fontela, E. Broullón, H. Farnelid, A. Fernández‐Carrera, B. Fernández Castro, R. A. Foster, S. Martínez‐García, E. Nogueira, B. Reguera, T. Rodríguez‐Ramos, M. M. Varela, E. Velasco‐Senovilla, B. Mouriño‐Carballido   +13 more
wiley   +1 more source

Biochemical characteristics of the sea surface microlayer in the central Baltic Sea and potential signatures of cyanobacterial blooms [PDF]

Biogeosciences
The sea surface microlayer (SML) forms the < 1 mm thin ocean's boundary with the atmosphere and plays a critical role in mediating air–sea gas exchange and biogeochemical cycling.
J. Karnatz, T. Barthelmeß, B. Sabbaghzadeh, A. Engel, A. Engel   +4 more
doaj   +1 more source

Recent Advances in the Molecular Mechanisms of Bacterial Anti‐Phage Defence Systems

Microbial Biotechnology, Volume 19, Issue 8, August 2026.
Panoptes as an example for an antiphage system consists of OptS producing a cyclic dinucleotide that prevents activation of OptE, a transmembrane protein. Phage T4 infection introduces the sponge protein Acb2 that adsorbs the cyclic dinucleotide thus activating OptE which disrupts the cell membrane aborting phage infection.
Harald Brüssow
wiley   +1 more source

Helicoid Morphology of Arthrospira platensis NIES-39 Confers Temperature Compensation in the Longitudinal Movement Velocity of Its Trichomes

Phycology
The velocity of the gliding movement of filamentous cyanobacteria on a solid surface usually has a strong temperature dependency, and the higher the temperature, the faster the speed.
Hideaki Shiraishi, Mari Sasase, Ayano Sakaida Nakashima   +2 more
doaj   +1 more source

Linking Biocrust Architecture and Dispersal: Reproductive Ecology of Lichens of the Grit Crust in the Coastal Atacama Desert

Environmental Microbiology Reports, Volume 18, Issue 4, August 2026.
Microscopic analysis of Atacama Desert grit crust revealed a sequential assembly process in which airborne fungal spores of the Caliciaceae colonise quartz particles before encountering compatible Trebouxia photobionts. Free‐living algal cells on grit surfaces function as environmental reservoirs for symbiosis initiation, while multiple wind‐driven ...
Lina Werner, Janina Koziol, Patrick Jung
wiley   +1 more source

The Effects of Microplastics and Additives on Ecosystem Function, Structure, and Signaling

Global Change Biology, Volume 32, Issue 8, August 2026.
Microplastics disrupt ecosystem signaling through olfactory traps, altering predator–prey signaling and disrupting microbial communication and quorum sensing. ABSTRACT Microplastics (MPs) and their associated chemical additives are pervasive contaminants whose ecological impacts extend beyond organismal toxicity to fundamentally alter ecosystem ...
Sally Gaw, Maia Raymundo, Ciemon F. Caballes   +2 more
wiley   +1 more source

Genome-wide comparative analysis of metacaspases in unicellular and filamentous cyanobacteria

BMC Genomics, 2010
Background Cyanobacteria are an ancient group of photoautotrophic prokaryotes with wide variations in genome size and ecological habitat. Metacaspases (MCAs) are cysteine proteinases that have sequence homology to caspases and play essential roles in ...
Qin Song, Jiang Qiao, Wu Qing-yu
doaj   +1 more source