Results 101 to 110 of about 3,354 (214)

A dual role of phycoerythrin in the nitrogen‐fixing cyanobacterium Crocosphaera watsonii: From light‐harvesting to nitrogen reservoir

Limnology and Oceanography Letters, Volume 11, Issue 5, September 2026.
Abstract Unicellular diazotrophic cyanobacteria contribute up to ~50% of marine N2 fixation, and Crocosphaera watsonii, characterized by high phycoerythrin (PE) content, is among one of the key species in tropical and subtropical oceans. Although recent observations have revealed heterogeneous N2 fixation activity within C.
Takako Masuda, Grzegorz Konert, Dominik Pinkas, Marie Vancová, Vlada Filimonenko, Radek Kaňa, Ondřej Prásil   +6 more
wiley   +1 more source

Limited evidence for soil enzyme activities mediating C:N discrepancies between microbial biomass and organic matter in year 145 of a maize‐based agroecosystem experiment

Soil Science Society of America Journal, Volume 90, Issue 5, September/October 2026.
Abstract Soil microbial biomass (MB) generally exhibits a narrower C:N than soil organic matter (SOM), creating a stoichiometric discrepancy hypothesized to be reconciled in part by C‐ and N‐acquiring enzyme activities. We used soils from an at‐equilibrium long‐term experiment to evaluate the degree to which MB C:N plasticity and enzyme activities ...
Tianze Song, Ezra Moses, Rosa Elena Ibarra López, Chammi Attanayake, Taylor B. Berkshire‐Akers, Andrew John Margenot   +5 more
wiley   +1 more source

RESPON TANAMAN CABAI MERAH (Capsicum annum L.) YANG DIAPLIKASIKAN BAKTERI ENDOFITIK DIAZOTROF DAN PUPUK N TERHADAP POPULASI ENDOFITIK DIAZOTROF, KONSENTRASI N, DAN BOBOT KERING TANAMAN PADA INCEPTISOLS JATINANGOR [PDF]

, 2018
The aim of the research was to determine the effect of nitrogen-fixing endophytic bacteria and N fertilizer on population of nitrogen-fixing (diazotroph) endophytic bacteria, N concentration and dry matter of red chili plant (Capsicum annuum L.) on ...
Sofyan, Emma Trinurani, Setiawati, Mieke Rochimi, Suryatmana, Pujawati, Pujawati Suryatmana, Emma Trinurani Sofyan, Mieke Rochimi Setiawati   +5 more
core   +1 more source

Projected AMOC Weakening Controls Future Diatom Decline in the Subpolar North Atlantic Ocean

Earth's Future, Volume 14, Issue 9, September 2026.
Abstract Climate models consistently project a decline in diatom net primary production (NPP) under high‐emission scenarios in the highly productive subpolar North Atlantic. However, the magnitude of this decline remains highly uncertain and varies substantially across models, limiting our ability to anticipate its ecological and biogeochemical ...
S. Doléac, M. Lévy, L. Bopp
wiley   +1 more source

Table_1_Protistal Grazers Increase Grazing on Unicellular Cyanobacteria Diazotroph at Night.pdf

, 2020
In this study, we have for the first time analyzed diel microzooplankton grazing selectivity on unicellular cyanobacterial diazotroph (i.e., Crocosphaera watsonii WH8501) and non-diazotrophic unicellular microalga (i.e., Chlorella autotrophica).
Hongbin Liu (217935), Lixia Deng (8552397), Shunyan Cheung (3184812)   +2 more
core   +1 more source

Protistal Grazers Increase Grazing on Unicellular Cyanobacteria Diazotroph at Night

, 2020
In this study, we have for the first time analyzed diel microzooplankton grazing selectivity on unicellular cyanobacterial diazotroph (i.e., Crocosphaera watsonii WH8501) and non-diazotrophic unicellular microalga (i.e., Chlorella autotrophica).
Deng, Lixia, Cheung, Shunyan, Liu, Hongbin   +2 more
core   +1 more source

Contribution and pathways of diazotroph-derived nitrogen to zooplankton during the VAHINE mesocosm experiment in the oligotrophic New Caledonia lagoon [PDF]

, 2016
In oligotrophic tropical and subtropical oceans, where strong stratification can limit the replenishment of surface nitrate, dinitrogen (N-2) fixation by diazotrophs can represent a significant source of nitrogen (N) for primary production.
Bonnet, Sophie, Berthelot, Hugo, Conroy, B. J., Foster, Rachel A.,, Conroy, Brandon J., Hunt, B. P. V., B. P. V. Hunt, Berthelot, H., Foster, R. A., Foster, Rachel A., H. Berthelot, Pagano, Marc, R. A. Foster, M. Pagano, S. Bonnet, Hunt, Brian P. V., B. J. Conroy   +16 more
core   +2 more sources

Diazotroph community succession during the VAHINE mesocosm experiment (New Caledonia lagoon) [PDF]

, 2015
The VAHINE mesocosm experiment, conducted in the low-nutrient low-chlorophyll waters of the Noumea lagoon (coastal New Caledonia) was designed to trace the incorporation of nitrogen (N) fixed by diazotrophs into the food web, using large volume (50 m(3))
Bonnet, Sophie, Turk-Kubo, K. A., Frank, IE, I. E. Frank, Desnues, A, Turk-Kubo, KA, K. A. Turk-Kubo, M. E. Hogan, Bonnet, S, Desnues, Anne, J. P. Zehr, A. Desnues, Frank, I. E., Hogan, ME, Zehr, J. P., Hogan, M. E., S. Bonnet, Zehr, JP   +17 more
core   +2 more sources

Specificity of salt marsh diazotrophs for vegetation zones and plant hosts

Frontiers in Microbiology, 2012
Salt marshes located on the east coast of temperate North America are highly productive, typically nitrogen-limited, and support diverse assemblages of nitrogen fixing (diazotrophic) bacteria.
Debra Aline Davis, Debra Aline Davis, Charles R Lovell   +2 more
doaj   +1 more source

Assimilation of Diazotrophic Nitrogen into Pelagic Food Webs

PLoS ONE, 2013
The fate of diazotrophic nitrogen (N(D)) fixed by planktonic cyanobacteria in pelagic food webs remains unresolved, particularly for toxic cyanophytes that are selectively avoided by most herbivorous zooplankton. Current theory suggests that N(D) fixed during cyanobacterial blooms can enter planktonic food webs contemporaneously with peak bloom biomass
Ryan J Woodland, Daryl P Holland, John Beardall, Jonathan Smith, Todd Scicluna, Perran L M Cook   +5 more
openaire   +4 more sources