The influences of macronutrient enrichment on iron absorption, adsorption, and the bioconcentration factor (BCF) of iron by coastal diatoms were examined. In addition, the distribution of different iron size fractions in seawater in relation to two diatom species exposed to nutrient enrichment over an extended period (6 days for Thalassiosira weissflogii, and 4 days for Skeletonema costatum), was investigated. Iron concentrations were measured of seven size fractions: particles (>0.4 μm), colloidal particles (0.4 μm-100, 100-50, 50-30, 30-10, 10-3 kDa), and soluble species (<3 kDa). The absorption, adsorption, uptake, BCF of iron by the diatoms, and the iron species distribution in seawater were affected by the diatom species, as well as the nitrate (N) and phosphate (P) concentration. The addition of P could affect the iron internalization strategy. The content of soluble iron species was positively correlated with the amount of iron absorption by T. weissflogii, but it was not suitable for S. costatum.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.marenvres.2011.06.001 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Transcriptome Analysis of the Growth-Promoting Effect of Large Macrofungal Sclerotium Powder on and Strains.
J Fungi (Basel)
November 2024
National Research Center for Edible Fungi Biotechnology and Engineering, Key Laboratory of Applied Mycological Resources and Utilization, Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China.
In the industrial production of and , slow growth of the mother seed and insufficient hyphal vitality can significantly affect the cultivation process. To shorten the growth period on traditional PDA medium, two strains of and were cultured with different proportions of . and sclerotium powders added into the medium to investigate the effect on the mycelial growth.
View Article and Find Full Text PDFUpper circumpolar deep water influences microbial functional gene composition and diversity along the southern Central Indian Ridge and eastern Southwest Indian Ridge.
Microbiol Spectr
December 2024
National Center for Polar and Ocean Research, Ministry of Earth Sciences, Vasco-da-Gama, Goa, India.
Deep sea microbial communities play a significant role in global biogeochemical processes. However, the depth-wise metabolic potential of microbial communities in hydrothermally influenced Central Indian Ridge (CIR) and Southwest Indian Ridge (SWIR) remains elusive. In this study, a comprehensive functional microarray-based approach was used to understand factors influencing the metabolic potential of microbial communities and depth-driven differences in microbial functional gene composition in CIR and SWIR.
View Article and Find Full Text PDFDistributions of DMS and DMSP and the influences of planktonic community assemblages in the Bohai Sea and Yellow Sea.
Mar Environ Res
December 2024
Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao, 266237, China. Electronic address:
Dimethyl sulfide (DMS) and dimethylsulfoniopropionate (DMSP) are important sulfur compounds influenced by community assemblages of plankton. The distributions of DMS, DMSP, DMSP lyase activity (DLA), DMSP-consuming bacteria (DCB), and community structures of phytoplankton and zooplankton were investigated during summer in the Bohai Sea and Yellow Sea. The variety ranges of DMS, dissolved DMSP (DMSP), and particulate DMSP (DMSP) concentrations in the surface seawater were 1.
View Article and Find Full Text PDFEnvironmental risk assessment of the surface sediments based on trace elements analysis from the largest freshwater lake in the southern slope of the Himalaya, Nepal.
Environ Monit Assess
December 2024
Central Department of Geology, Tribhuvan University, Kirtipur, Kathmandu, 44600, Nepal.
Freshwater ecosystems, including high-altitude lakes, can be affected by trace metal pollution derived from a mix of natural sources and anthropogenic activities. These pollutants often collect in surface sediments, with notable concentrations in the deeper areas of lakes. To evaluate the environmental risk associated with metal contaminated sediment in Rara Lake, southern Himalaya, surface sediment samples were systematically collected in November 2018, with a subsequent specific emphasis on determinations of trace element concentrations.
View Article and Find Full Text PDFThe receptor, involved in the control of arbuscular mycorrhizal symbiosis, regulates hormonal balance in roots.
Front Microbiol
December 2024
Department of Soil and Plant Microbiology, Estación Experimental del Zaidín (EEZ), CSIC, Granada, Spain.
Arbuscular mycorrhiza (AM) represents a symbiotic mutualistic association between most land plants and fungi. AM fungi develops specialized intraradical and highly branched structures, called arbuscules, where bidirectional exchange of nutrients between plant and fungi partners occurs, improving plant growth and fitness. Transcriptional reprogramming and hormonal regulation are necessary for the formation of the arbuscules.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!