Adriano Sofo

Naser A. Anjum

Mirza Hasanuzzaman

Masayuki Fujita

Sarvajeet Singh Gill

Narendra Tuteja

Francisco J. Corpas

Cristina Ortega-Villasante

Luis E. Hernandez

Recent Insights into the Double Role of Hydrogen Peroxide in Plants

José Manuel Palma

Subcellular Compartmentalization of Plant Antioxidants and ROS Generating Systems

José M. Palma

Dharmendra K Gupta

This book provides an up-to-date overview of redox signaling in plant cells and its key role in responses to different stresses. The chapters, which are original works or reviews, focus on redox signaling states; cellular tolerance under different biotic and abiotic stresses; cellular redox homeostasis as a central modulator; redox homeostasis and reactive oxygen species (ROS); redox balance in chloroplasts and mitochondria; oxidative stress and its role in peroxisome homeostasis; glutathione-related enzyme systems and metabolism under metal stress; and abiotic stress-induced redox changes and programmed cell death. The book is an invaluable source of information for plant scientists and students interested in redox state chemistry and cellular tolerance in plants.

Redox State as a Central Regulator of Plant-Cell Stress Responses

Luciano Freschi

Victoriano Valpuesta

This Research Topic compiles the most recent advances made in cutting-edge research on fruit ripening events, including crop species such as fig, watermelon, tomato, peach, berries, olive, etc. From the regulation of metabolic pathways of physiological relevance for fruits to genetic and molecular approaches, this piece of work covers current bio-technology cues like CRISPR/Cas9, metagenomics, metabolomics, transcriptomics, microRNA, and others oriented towards future improvement of fruit nutritional value. The editors hope the readers enjoy this work and acknowledge the authors' great contributions to this Research Topic.

Fruit Ripening: From Present Knowledge to Future Development

M. Nasir Khan

Mohammad Mobin

Firoz Mohammad

This book covers the key features of nitric oxide (NO) in plants. Comprising nine chapters, Part I highlights its metabolism and identification in plants. Part II, which consists of eight chapters, focuses on the chemical, physical and biochemical properties of the NO molecule and its derivatives; on its functional role and mode of action; and on its signaling and interaction with phytohormones, mineral nutrients, biomolecules, ions and ion channels in plants under abiotic stresses. Combining the expertise of leading researchers in the field, the book provides a concise overview of plant NO biology and offers a valuable reference work.

Nitric Oxide in Plants: Metabolism and Role in Stress Physiology

Dharmendra K. Gupta

This book provides an overview of antioxidants and antioxidant enzymes and their role in the mechanisms of signaling and cellular tolerance under stress in plant systems. Major reactive oxygen species (ROS)-scavenging/modulating enzymes include the superoxide dismutase (SOD) that dismutates O2 into H2O2, which is followed by the coordinated action of a set of enzymes including catalase (CAT), ascorbate peroxidase (APX), glutathione peroxidase (GPX) and peroxiredoxins (Prx) that remove H2O2. In addition to the ROS scavenging enzymes, a number of other enzymes are found in various subcellular compartments, which are involved in maintaining such redox homeostasis either by directly scavenging particular ROS and ROS-byproducts or by replenishing antioxidants. In that respect, these enzymes can be also considered antioxidants. Such enzymes include monodehydroascorbate reductase (MDAR), dehydroascorbate reductase (DHAR), glutathione reductase (GR), alternative oxidases (AOXs), peroxidases (PODs) and glutathione S-transferases (GSTs). Some non-enzymatic antioxidants, such as ascorbic acid (vitamin C), carotenes (provitamin A), tocopherols (vitamin E), and glutathione (GSH), work in concert with antioxidant enzymes to sustain an intracellular steady-state level of ROS that promotes plant growth, development, cell cycles and hormone signaling, and reinforces the responses to abiotic and biotic environmental stressors. Offering a unique compilation of information on antioxidants and antioxidant enzymes, this is a valuable resource for advanced students and researchers working on plant biochemistry, physiology, biotechnology, and signaling in cell organelles, and those specializing in plant enzyme technology.

Antioxidants and Antioxidant Enzymes in Higher Plants

Plants possess a range of potential cellular mechanisms that may be involved in the detoxification of heavy metals and thus tolerance to metal stress. Metal toxicity causes multiple direct and indirect effects in plants that concern practically all physiological functions. The main purpose of this book is to present comprehensive and concise information on recent advances in the field of metal transport and how genetic diversity affects heavy metal transport in plants. Other key futures of the book are related to metal toxicity and detoxification mechanisms, biochemical tools for HM remediation processes, molecular mechanisms for HM detoxification, how metallomics and metalloproteomics are affected by heavy metal stress in plants, and the role of ROS metabolism in the alleviation of heavy metals. Some chapters also focus on recent developments in the field of phytoremediation. Overall the book presents in-depth information and the most essential advances in the field of heavy metal toxicity in plants in recent years.

Heavy Metal Stress in Plants

Francisco J. Corpas

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