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This topic focuses on distribution, synthesis, metabolism, and the in vivo roles of melatonin in plants, with 1 editorial, 3 reviews, 21 original research studies and 1 corrigendum.

Melatonin --- development --- plant --- reactive oxygen species (ROS) --- stress responses

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Chloroplasts are at the front line of many advancements in molecular biology, ranging from evolutionary biology to the mechanism of energy transduction, also including stress responses and programmed leaf death. In addition to the relevance of basic knowledge, advances are unveiling promising insights to improve plant productivity, disease resistance, and environmental control. The production of secondary metabolites and proteins by transformed chloroplasts adds further excitement to applied investigations on chloroplasts. The comparison of the sequences of the chloroplast DNA of different plants provides valuable information on gene content, reordering in the circular chloroplast DNA, and mutational genetic-derive, relevant to the evolution of the chloroplast. Increasing facilities for intense genome sequencing have prompted many laboratories to focus on the chloroplast DNA. Reflecting these efforts, more than half of the articles in this book deal with functional or evolutionary investigations based on sequence analyses of chloroplast DNA. Additional topics treated in the issue include post-transcriptional control, the processing of nuclear encoded preproteins of chloroplasts, the response of photosynthetic machinery to water deficit, turn-over of chloroplast proteins, mechanism of chloroplast division, and chloroplast movements.

photosynthesis --- endosymbiosis --- plants --- plastid DNA --- electron transport --- thylakoid --- reactive oxygen species (ROS) --- photosystems

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The collection of articles discussed above covers various types of discharges and various processes. The discharges presented include, for example, microwave, spark, glow or surface discharges. The characterizations of the sources of these discharges, the parameters of the generated plasmas as well as the applications of these plasmas are discussed. The applications include, for example, the synthesis of nanoparticles or the treatment of skin cancer cells. I hope that the presented articles will be valuable for readers representing the world of science, medicine and technology.

Research & information: general --- Biology, life sciences --- Biochemistry --- surface discharge --- epoxy resin --- electronegative gas --- high-voltage power equipment --- diffusion welding --- plasma --- glow discharge --- surface treatment --- plasma techniques --- spark discharge --- nanoparticle synthesis --- silver electrodes --- electrodes asymmetry --- vortex break down --- plasma swirl injector --- dielectric barrier discharge --- swirling flow control --- melanoma cell (B16F10) --- plasma cancer therapy --- cold atmospheric plasma (CAP) --- transferred cold atmospheric plasma --- reactive oxygen species (ROS) --- reactive nitrogen species (RNS) --- catalase --- microwave plasma --- dual-frequency plasma --- electron temperature --- electron density --- n/a

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The collection of articles discussed above covers various types of discharges and various processes. The discharges presented include, for example, microwave, spark, glow or surface discharges. The characterizations of the sources of these discharges, the parameters of the generated plasmas as well as the applications of these plasmas are discussed. The applications include, for example, the synthesis of nanoparticles or the treatment of skin cancer cells. I hope that the presented articles will be valuable for readers representing the world of science, medicine and technology.

Research & information: general --- Biology, life sciences --- Biochemistry --- surface discharge --- epoxy resin --- electronegative gas --- high-voltage power equipment --- diffusion welding --- plasma --- glow discharge --- surface treatment --- plasma techniques --- spark discharge --- nanoparticle synthesis --- silver electrodes --- electrodes asymmetry --- vortex break down --- plasma swirl injector --- dielectric barrier discharge --- swirling flow control --- melanoma cell (B16F10) --- plasma cancer therapy --- cold atmospheric plasma (CAP) --- transferred cold atmospheric plasma --- reactive oxygen species (ROS) --- reactive nitrogen species (RNS) --- catalase --- microwave plasma --- dual-frequency plasma --- electron temperature --- electron density

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The kidney performs important functions in the human body and can inflict either acute kidney injury (AKI) or chronic kidney disease (CKD). AKI can be induced by kidney ischemia, drugs such as cisplatin, and heavy metals such as cadmium and arsenic. CKD can be induced by drugs, heavy metals, hypertension, and diabetes, as well as cancer. Importantly, nearly all kidney disorders have been shown to involve redox imbalance, reductive stress, oxidative stress, and mitochondrial abnormalities such as impaired mitochondrial homeostasis, including disrupted mitophagy and deranged mitochondrial unfolded protein responses. Understanding how these redox-related dysregulated pathways operate may give us new insights into how to design novel approaches to fighting kidney disease. This Special Issue of Biomolecules entitled “Redox imbalance and mitochondrial abnormalities in kidney disease” covers a variety of topics focusing on oxidative stress, mitochondrial dysfunction, and antioxidation enhancement implicated in kidney disease or kidney transplantation.

Medicine --- Pharmacology --- diabetic kidney disease --- caloric restriction --- NADH/NAD+ --- redox imbalance --- mitochondrial homeostasis --- mitophagy --- oxidative stress --- kidney allograft --- kidney rejection --- ischemia --- acute kidney injury (AKI) --- chronic kidney disease (CKD) --- tricarboxylic acid (TCA) cycle --- mitochondrial metabolism --- mitochondrial redox signaling --- mitochondrial proteins --- oxidative phosphorylation (OXPHOS) --- fatty acid (FA) β-oxidation --- mitochondrial dynamics --- biogenesis --- diabetes --- kidney --- mitochondria --- Oryza sativa --- rice husk --- TCA cycle metabolites --- kidney diseases --- renalase --- chronic kidney disease --- major adverse cardiovascular outcomes --- cadmium --- kidney injury --- renal toxicity --- oxidative damage --- proximal tubule --- controlled oxygenated rewarming --- mitochondrial uncoupling --- rewarming injury --- temperature paradox --- redox --- mitochondrial dysfunction --- SGLT2 --- mitochondrial reactive oxygen species --- Warburg effect --- podocytopathies --- mitochondrial oxidative stress --- reactive oxygen species (ROS) --- antioxidant defense --- cell death --- n/a