Results 61 to 70 of about 5,029 (176)

Marine bacterial richness increases towards higher latitudes in the eastern Indian Ocean

Limnology and Oceanography Letters, 2018
We investigated the bacterial community structure in surface waters along a 2500 km transect in the eastern Indian Ocean. Using high throughput sequencing of the 16S rRNA gene, we measured a significant latitudinal increase in bacterial richness from 800
Eric J. Raes, Levente Bodrossy, Jodie van de Kamp, Andrew Bissett, Anya M. Waite   +4 more
doaj   +1 more source

Nitrogen and Phosphorus Controls on Phytoplankton Growth and Bacterioplankton Communities in Wetland Impoundments

Freshwater Biology, Volume 71, Issue 8, August 2026.
ABSTRACT Nutrient enrichment in shallow lakes and ponds can shift systems from clear water, macrophyte dominance to turbid, phytoplankton dominance. Because the identity and threshold of the limiting nutrients vary among sites, system‐specific evidence is needed to guide water quality management. We conducted 3‐day in situ nutrient‐enrichment bioassays
Rachel. L. Wood, Jakob L. Young, Madeleine P. Malmfeldt, Adam J. Norris, Zachary T. Aanderud, Michelle A. Baker   +5 more
wiley   +1 more source

Ecological Patterns of nifH Genes in Four Terrestrial Climatic Zones Explored with Targeted Metagenomics Using FrameBot, a New Informatics Tool

mBio, 2013
Biological nitrogen fixation is an important component of sustainable soil fertility and a key component of the nitrogen cycle. We used targeted metagenomics to study the nitrogen fixation-capable terrestrial bacterial community by targeting the gene for
Qiong Wang, John F. Quensen, Jordan A. Fish, Tae Kwon Lee, Yanni Sun, James M. Tiedje, James R. Cole   +6 more
doaj   +1 more source

Environmental forcing of nitrogen fixation in the eastern tropical and sub-tropical North Atlantic Ocean. [PDF]

PLoS ONE, 2011
During the winter of 2006 we measured nifH gene abundances, dinitrogen (N(2)) fixation rates and carbon fixation rates in the eastern tropical and sub-tropical North Atlantic Ocean.
Micha J A Rijkenberg, Rebecca J Langlois, Matthew M Mills, Matthew D Patey, Polly G Hill, Maria C Nielsdóttir, Tanya J Compton, Julie Laroche, Eric P Achterberg   +8 more
doaj   +1 more source

Natural Variation of NAR5 Determines Nitrogenase Activity and the Yield in Soybean

Advanced Science, Volume 13, Issue 38, 9 July 2026.
This study identified NAR5, a gene encoding a subtilisin‐like protease, that regulates nitrogenase activity in soybean nodules. Overexpressing NAR5 delayed nodule senescence, enhancing nitrogenase activity, yield, and low‐nitrogen tolerance. The elite haplotype NAR5HapI‐1 linked to superior nitrogenase activity and greater seed weight has been ...
Chao Ma, Hanyu Zhao, Haojie Feng, Xulun Dong, Lin Chen, Mingliang Yang, Runyi Chen, Chengjun Lei, Chunyan Liu, Qingshan Chen, Dawei Xin, Jinhui Wang   +11 more
wiley   +1 more source

Nitrogen Fixation Aligns with nifH Abundance and Expression in Two Coral Trophic Functional Groups

Frontiers in Microbiology, 2017
Microbial nitrogen fixation (diazotrophy) is a functional trait widely associated with tropical reef-building (scleractinian) corals. While the integral role of nitrogen fixation in coral nutrient dynamics is recognized, its ecological significance ...
Claudia Pogoreutz, Claudia Pogoreutz, Claudia Pogoreutz, Nils Rädecker, Nils Rädecker, Anny Cárdenas, Anny Cárdenas, Astrid Gärdes, Christian Wild, Christian R. Voolstra   +9 more
doaj   +1 more source

Soil Microbiota and Rhizosphere Dynamics: Ecological Mechanisms Driving Crop Stress Adaptation in Climate‐Smart Agriculture

Food and Energy Security, Volume 15, Issue 4, July/August 2026.
ABSTRACT Climate change‐mediated abiotic stresses limit crop performance, and plant responses are increasingly recognized as emergent properties of the coupling between soil, plants, and microbiomes rather than inherent plant characteristics. This review synthesizes mechanistic evidence from 2020 to 2025 on how rhizosphere microbiota contribute to crop
Alaba Adewole Adebayo, Funso Raphael Kutu, Dennis Ndolo, Ma del Carmen Orozco‐Mosqueda, Gustavo Santoyo, Olubukola Oluranti Babalola   +5 more
wiley   +1 more source

Microbiome of Trichodesmium Colonies from the North Pacific Subtropical Gyre

Frontiers in Microbiology, 2017
Filamentous diazotrophic Cyanobacteria of the genus Trichodesmium, often found in colonial form, provide an important source of new nitrogen to tropical and subtropical marine ecosystems.
Mary R. Gradoville, Byron C. Crump, Ricardo M. Letelier, Matthew J. Church, Angelicque E. White   +4 more
doaj   +1 more source

Enhanced CO2 Coordinates the Spatial Recruitment of Diazotrophs in Rice Via Root Development

Plant, Cell &Environment, Volume 49, Issue 7, Page 3678-3693, July 2026.
ABSTRACT Understanding the reciprocal interaction between root development and coadapted beneficial microbes in response to elevated CO2 (eCO2) will facilitate the identification of nutrient‐efficient cultivars for sustainable agriculture. Here, systematic morphological, anatomical, chemical and gene expression assays performed under low‐nitrogen ...
Junwen Zhao, Yuting Chen, Qi Tao, Lukas Schreiber, Kiran Suresh, Michael Frei, Muhammad Shahedul Alam, Bing Li, Yaping Zhou, Marcel Baer, Frank Hochholdinger, Changquan Wang, Peng Yu   +12 more
wiley   +1 more source

Mutagenic Survey of Key Residues of NifB Involved in Radical SAM‐Dependent Nitrogenase Cofactor Assembly

ChemBioChem, Volume 27, Issue 11, 15 June 2026.
NifB uses an RS–K1–K2 triad to assemble the L‐cluster, a [Fe8S9C] precursor of the nitrogenase cofactor. The RS module cleaves SAM to form the 5′‐dA radical, K1 serves structural/SAM‐sensing roles, and K2 drives radical‐dependent fusion with K1. SAM‐anchoring residues link SAM binding to cluster fusion, while termini and surface residues regulate ...
Calder Duffin, Robert Quechol, Yimo Yang, Chi Chung Lee, Yilin Hu, Markus W. Ribbe   +5 more
wiley   +1 more source