Results 51 to 60 of about 2,943 (165)

Temperature controls bryophyte‐associated nitrogen fixation in super‐humid temperate forests in New Zealand

Ecology, Volume 107, Issue 3, March 2026.
Abstract Nitrogen (N) fixation performed by certain prokaryotes (diazotrophs) is a key source of new N in pristine ecosystems. Diazotrophs associate with various plants, including bryophytes—the dominant plant group in northern ecosystems such as boreal forests. There, bryophyte‐associated N2 fixation contribute half of total ecosystem N input. However,
Kathrin Rousk, Meila Picard, Annika Engroff, David Glenny, Naomi Wells   +4 more
wiley   +1 more source

Nitrogen Fixation and Diazotrophs – A Review

Romanian Biotechnological Letters, 2021
Nitrogen fixation involves formation of ammonium from N2, which needs a high input of energy. Biological nitrogen fixation utilizes the enzyme nitrogenase and ATP to fix nitrogen. Nitrogenase contains a Fe-protein and a Mo-Fe-protein and other metal cofactors.
WENLI SUN, MOHAMAD HESAM SHAHRAJABIAN, QI CHENG   +2 more
openaire   +1 more source

Diazotrophs and N2-Fixation Associated With Particles in Coastal Estuarine Waters

Frontiers in Microbiology, 2018
Putative heterotrophic bacteria carrying out N2-fixation, so-called non-cyanobacterial diazotrophs (NCDs), are widely distributed in marine waters, but details of how the O2-inhibited N2-fixation process is promoted in the oxic water column remains ...
Jeppe N. Pedersen, Deniz Bombar, Ryan W. Paerl, Lasse Riemann   +3 more
doaj   +1 more source

High nitrogen fixation and Braarudosphaera presence in the North Sea

Limnology and Oceanography, Volume 71, Issue 3, March 2026.
Abstract Nitrogen fixation, the microbial conversion of dinitrogen gas to ammonia, is a key nitrogen source and critical for sustaining marine productivity. We investigated the diversity and activity of nitrogen‐fixers in surface waters of the North Sea and Norwegian coast during July 2023.
Kendra Turk‐Kubo, Claire Mahaffey, Jo Hopkins, Ruth Hawley, Louisa Norman, Lewis Wrightson, Ben Fisher, Stefanie Rynders, Clive Neil, Maryam Ilyas, Maeve C. Lohan   +10 more
wiley   +1 more source

Diazotrophic abundance and community structure associated with three meadow plants on the Qinghai-Tibet Plateau

Frontiers in Microbiology
Symbiotic diazotrophs form associations with legumes and substantially fix nitrogen into soils. However, grasslands on the Qinghai-Tibet Plateau are dominated by non-legume plants, such as Kobresia tibetica.
Jean Bosco Nshimiyimana, Jean Bosco Nshimiyimana, Kang Zhao, Kang Zhao, Wenying Wang, Wenying Wang, Weidong Kong, Weidong Kong   +7 more
doaj   +1 more source

Microbial regulation of global macroalgal blooms (green tides): From holobiont interactions to bloom dynamics and biogeochemistry

Limnology and Oceanography Letters, Volume 11, Issue 2, March 2026.
Abstract Green tides caused by Ulva species have become one of the most serious marine ecological disasters, now impacting many coastal nations around the world. Although climatic and environmental drivers of these macroalgal blooms are well recognized, growing evidence identifies Ulva‐associated microbiota as potential pivotal regulators of bloom ...
Zhangyi Xia, Zenghu Zhang, Jiulong Zhao, Xiaojie Wang, Shanli Mou, Nianzhi Jiao, Yongyu Zhang   +6 more
wiley   +1 more source

Climate Change Projections for the Southwest Pacific Ocean Using Coupled Model Intercomparison Project (CMIP) Phase 5 and 6 Models: Implications for Physics, Biogeochemistry, Ecosystems, and Fisheries

New Zealand Journal of Marine and Freshwater Research, Volume 60, Issue 1, March 2026.
This article analyses future projections of ocean properties for a region of the south‐west Pacific Ocean encompassing the New Zealand Exclusive Economic Zone under different climate change emission scenarios. Projections are updated and expanded from previous assessments using a “best” ensemble comprising both CMIP5 and CMIP6 earth system models.
Graham J. Rickard, Cliff S. Law, Matthew H. Pinkerton   +2 more
wiley   +1 more source

Long-Term Warming in Alaska Enlarges the Diazotrophic Community in Deep Soils

mBio, 2019
Tundra ecosystems are typically carbon (C) rich but nitrogen (N) limited. Since biological N2 fixation is the major source of biologically available N, the soil N2-fixing (i.e., diazotrophic) community serves as an essential N supplier to the tundra ...
Jiajie Feng, C. Ryan Penton, Zhili He, Joy D. Van Nostrand, Mengting M. Yuan, Liyou Wu, Cong Wang, Yujia Qin, Zhou J. Shi, Xue Guo, Edward A. G. Schuur, Yiqi Luo, Rosvel Bracho, Konstantinos T. Konstantinidis, James R. Cole, James M. Tiedje, Yunfeng Yang, Jizhong Zhou   +17 more
doaj   +1 more source

Predicting compatibility between ferredoxins and the Fe protein of nitrogenase using in silico protein modeling

Protein Science, Volume 35, Issue 3, March 2026.
Abstract Biological nitrogen fixation is the process by which certain bacteria and archaea use the enzyme nitrogenase to reduce atmospheric nitrogen into bioavailable ammonium. Engineering non‐nitrogen‐fixing organisms, like plants, to use nitrogenase could reduce dependency on synthetic fertilizer and mitigate the environmental impacts of industrial ...
Adity Biswas, Katerina Trachtova, Kathryn R. Fixen   +2 more
wiley   +1 more source

EVIDENCE FOR INTERGENERIC TRANSFORMATION IN FILAMENTOUS, DIAZOTROPHIC CYANOBACTERIA [PDF]

New Phytologist, 1987
SummaryA clonal population of a mutant Nostoc muscorum, with the ability to assimilate azide as a fixed nitrogen source, was used as a source of donor DNA for transforming Anabaena doliolum from an azide‐sensitive to an azide‐assimilating phenotype. The donor DNA. transformed A.
D T, Singh, S N, Bagchi, D R, Modi, H N, Singh   +3 more
openaire   +2 more sources