Results 41 to 50 of about 4,604,712 (309)
Bacterial Responses to Alkaline Stress
Science Progress, 2003 Studies of bacterial adaptation to alkaline pH have been less extensive to date compared with those of acidic pH. Recent development of novel methods for global analysis of gene expression under various conditions revealed that many genes were induced at high pH.
Hiromi, Saito, Hiroshi, Kobayashi
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Transcriptome analysis of Enterococcus faecalis in response to alkaline stress [PDF]
Frontiers in Microbiology, 2015 Enterococcus faecalis is the most commonly isolated species from endodontic failure root canals; its persistence in treated root canals has been attributed to its ability to resist high pH stress. The goal of this study was to characterize the E. faecalis transcriptome and to identify candidate genes for response and resistance to alkaline stress using
Ran, Shujun +4 more
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Hopanoids Play a Role in Membrane Integrity and pH Homeostasis in Rhodopseudomonas palustris TIE-1 [PDF]
, 2009 Sedimentary hopanes are pentacyclic triterpenoids that serve as biomarker proxies for bacteria and certain bacterial metabolisms, such as oxygenic photosynthesis and aerobic methanotrophy.
Hunter, Ryan C. +5 more
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Polyphosphate‐hydrolysis ‐ a protective mechanism against alkaline stress?
FEBS Letters, 1990 Different microorganisms, including yeast and algae, accumulate large amounts of polyphosphates. However, the physiological role of polyphosphates is largely unknown. In vivo 31P NMR studies, carried out in the unicellular alga, Dunaliella salina, demonstrate that cytoplasmic alkalization induces massive hydrolysis of polyphosphates, which is ...
Pick, Uri +3 more
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Frontiers in Plant Science, 2017 Alkaline stress (high pH) severely damages root cells, and consequently, inhibits rice (Oryza sativa L.) seedling growth. In this study, we demonstrate the accumulation of reactive oxygen species (ROS) in root cells under alkaline stress.
Hui Zhang +18 more
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DNA 3 '-Phosphatase Activity Is Critical for Rapid Global Rates of Single-Strand Break Repair following Oxidative Stress [PDF]
, 2009 Oxidative stress is a major source of chromosome single-strand breaks (SSBs), and the repair of these lesions is retarded in neurodegenerative disease. The rate of the repair of oxidative SSBs is accelerated by XRCC1, a scaffold protein that is essential
Breslin, Claire, Caldecott, Keith W
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Alkaline Stress Causes Changes in Polyamine Biosynthesis in Thermus thermophilus
International Journal of Molecular Sciences, 2022 An extreme thermophile, Thermus thermophilus, produces 16 different polyamines including long-chain and branched-chain polyamines. The composition and content of polyamines in the thermophile cells change not only with growth temperature but also with pH changes.
Teruyuki Kobayashi +6 more
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Ecotoxicology and Environmental Safety, 2022 Land alkalization is an abiotic stress that affects global sustainable agricultural development and the balance of natural ecosystems. In this study, two broomcorn millet cultivars, T289 (alkaline-tolerant) and S223 (alkaline-sensitive), were selected to
Qian Ma +7 more
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Stress-Life Interrelationships Associated with Alkaline Fuel Cells [PDF]
22nd Intersociety Energy Conversion Engineering Conference, 1987 A review is presented concerning the interrelationships between applied stress and the expected service life of alkaline fuel cells. Only the physical, chemical, and electrochemical phenomena that take place within the fuel cell stack portion of an overall fuel cell system will be discussed.
Lawrence H. Thaller +2 more
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Elevated Level of DNA Damage and Impaired Repair of Oxidative DNA Damage in Patients with Recurrent Depressive Disorder [PDF]
, 2015 Background: Depressive disorder (DD), including recurrent DD (rDD), is a severe psychological disease, which affects a large percentage of the world population.
Bielecka-Kowalska, Anna +9 more
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