Results 21 to 30 of about 105,276 (274)

The Diverse Modes of Oxygen Reactivity in Life & Chemistry

ChemSusChem, Volume 15, Issue 24, December 20, 2022., 2022
Breath of life: Oxygen is the quintessential molecule of life on our planet. Three molecular oxygen species dominate natural and artificial oxygenation reactions: the singlet and triplet spin states of dioxygen and ozone. This Review summarizes key applications of these molecular oxygen species in biology, medicine, technologies, and laboratories ...
Robin Stuhr, Patrick Bayer, Axel Jacobi von Wangelin   +2 more
wiley   +1 more source

Phylogenomic Analysis and Dynamic Evolution of Chloroplast Genomes in Salicaceae

Frontiers in Plant Science, 2017
Chloroplast genomes of plants are highly conserved in both gene order and gene content. Analysis of the whole chloroplast genome is known to provide much more informative DNA sites and thus generates high resolution for plant phylogenies. Here, we report
Yuan Huang, Yuan Huang, Jun Wang, Yongping Yang, Chuanzhu Fan, Jiahui Chen, Jiahui Chen   +6 more
doaj   +1 more source

A shared mucosal gut microbiota signature in primary sclerosing cholangitis before and after liver transplantation

Hepatology, EarlyView., 2022
In this study of the gut mucosal microbiota in primary sclerosing cholangitis (PSC), we found consistent microbiota features associated with PSC and recurrent PSC, PSC with inflammatory bowel disease and a persistent gut dysbiosis after liver transplantation Abstract Background and Aims Several characteristic features of the fecal microbiota have been ...
Mikal Jacob Hole, Kristin Kaasen Jørgensen, Kristian Holm, Peder R. Braadland, Malin Holm Meyer‐Myklestad, Asle Wilhelm Medhus, Dag Henrik Reikvam, Alexandra Götz, Krzysztof Grzyb, Kirsten Muri Boberg, Tom Hemming Karlsen, Martin Kummen, Johannes R. Hov   +12 more
wiley   +1 more source

Planktonic microbial communities from microbialite‐bearing lakes sampled along a salinity‐alkalinity gradient

Limnology and Oceanography, Volume 67, Issue 12, Page 2718-2733, December 2022., 2022
Abstract Continental freshwater systems are particularly vulnerable to environmental variation. Climate change‐induced desertification and the anthropogenic exploitation of hydric resources result in the progressive evaporation and salinization of inland water bodies in many areas of the globe.
Miguel Iniesto, David Moreira, Karim Benzerara, Guillaume Reboul, Paola Bertolino, Rosaluz Tavera, Purificación López‐García   +6 more
wiley   +1 more source

Chloroplast microsatellites: measures of genetic diversity and the effect of homoplasy [PDF]

Molecular Ecology 14, 5 (2005) 1333-41, 2009
Chloroplast microsatellites have been widely used in population genetic studies of conifers in recent years. However, their haplotype configurations suggest that they could have high levels of homoplasy, thus limiting the power of these molecular markers.
arxiv   +1 more source

The use of an automated organism tracking microscope in mesocosm experiments

Limnology and Oceanography: Methods, Volume 20, Issue 12, Page 768-780, December 2022., 2022
Abstract A method for automatically counting and measuring sizes and motility behavior of zooplankton and phytoplankton in water samples is presented. Two video cameras are focused on separate optical chambers of different sizes. The chambers are filled and emptied repeatedly by synchronized pumps.
Nicholas Blackburn, Pia Haecky, Iveta Jurgensone, Evelina Griniene, Sonia Brugel, Agneta Andersson, Jacob Carstensen   +6 more
wiley   +1 more source

Natural recovery of genetic diversity by gene flow in reforested areas of the endemic Canary Island pine, Pinus canariensis [PDF]

Forest Ecology and Management 244, 1-3 (2007) 122-128, 2008
The endemic pine, Pinus canariensis, forms one of the main forest ecosystems in the Canary Islands. In this archipelago, pine forest is a mosaic of natural stands (remnants of past forest overexploitation) and artificial stands planted from the 1940's. The genetic makeup of the artificially regenerated forest is of some concern. The use of reproductive
arxiv   +1 more source

Indirect Export of Reducing Equivalents From the Chloroplast to Resupply NADP for C3 Photosynthesis—Growing Importance for Stromal NAD(H)?

Frontiers in Plant Science, 2021
Plant productivity greatly relies on a flawless concerted function of the two photosystems (PS) in the chloroplast thylakoid membrane. While damage to PSII can be rapidly resolved, PSI repair is complex and time-consuming. A major threat to PSI integrity
Moritz Krämer, Hans-Henning Kunz
doaj   +1 more source

Chloroplast microsatellites reveal colonization and metapopulation dynamics in the Canary Island pine [PDF]

Molecular Ecology 15, 10 (2006) 2691-8, 2008
Chloroplast microsatellites are becoming increasingly popular markers for population genetic studies in plants, but there has been little focus on their potential for demographic inference. In this work the utility of chloroplast microsatellites for the study of population expansions was explored.
arxiv   +1 more source

Salt Stress Affects Plastid Ultrastructure and Photosynthetic Activity but Not the Essential Oil Composition in Spearmint (Mentha spicata L. var. crispa “Moroccan”)

Frontiers in Plant Science, 2021
High levels of soil salinity affect plant growth, reproduction, water and ion uptake, and plant metabolism in a complex manner. In this work, the effect of salt stress on vegetative growth, photosynthetic activity, and chloroplast ultrastructure of ...
Roumaissa Ounoki, Ferenc Ágh, Ferenc Ágh, Richard Hembrom, Renáta Ünnep, Bernadett Szögi-Tatár, Andrea Böszörményi, Katalin Solymosi   +7 more
doaj   +1 more source