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  • 1
    Keywords: Plant physiology. ; Agronomy. ; Botanical chemistry. ; Plant Physiology. ; Agronomy. ; Plant Biochemistry.
    Description / Table of Contents: Ch 1. Melatonin discovery and divergent biosynthetic pathways in plant -- Ch 2. Melatonin detection and quantification techniques -- Ch 3. Melatonin-mediated regulation of germination, plant establishment and vegetative development -- Ch 4. Regulatory role of melatonin in flowering, fruit setting and ripening -- Ch 5. Regulatory role of melatonin in photosynthesis and respiration -- Ch 6. Phytohormonal cross-talk with melatonin in plant -- Ch 7. Interaction of melatonin with reactive oxygen species in plants -- Ch 8. Reactive Nitrogen Species (RNS) and Melatonin Interaction in Plant -- Ch 9. Diverse functional role of melatonin in post-harvest biology -- Ch 10. Regulatory role of melatonin in post-harvest management of vegetables and fruits -- Ch 11. Synergistic effect of melatonin in plant growth and development in stress mitigation -- Ch 12. Melatonin mediated regulation of growth, production and protection in forest plant species -- Ch 13. Melatonin: A promising tool against climate change and food security for better plant survival.
    Abstract: This book highlights the multifunctional role of the ubiquitous molecule, melatonin, in crop plants. The major focus of this edition is to provide detailed insights into morphophysiological, biochemical, and molecular responses of melatonin in the growth and development of the plant. The inception of melatonin as an animal hormone and the subsequent discovery of its multifaceted function in the animal system has triggered the research on this pineal gland hormone. During the last decade, the discovery, quantification and functional studies of melatonin as phytohormone has emerged at a rapid pace. Recently, this phyto-protectant has become an integral component of lab and field-based research on the mitigation of adverse effects of climate-driven abiotic stresses and postharvest biology and technology. The book explores various biosynthetic pathways and detection of melatonin covering its role in flowering, fruit development, photosynthesis, respiration, hormonal crosstalk, post-harvest biology and reactive oxygen species and nitrogen cycles. This book is of high interest to postharvest industries, horticulturists, scientists, researchers, and students. .
    Type of Medium: Online Resource
    Pages: XVII, 300 p. 1 illus. , online resource.
    Edition: 1st ed. 2023.
    ISBN: 9789819967452
    DDC: 571.2
    Language: English
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  • 2
    Keywords: Plant physiology. ; Plant diseases. ; Botanical chemistry. ; Plant Physiology. ; Plant Pathology. ; Plant Biochemistry.
    Description / Table of Contents: Ch 1. Evolution of melatonin as an oxidative stress mitigator in plant -- Ch 2. Melatonin-mediated drought stress mitigation by modulation of physiological and biochemical responses in plants -- Ch 3. Reprogramming of salt stress under the influence of melatonin -- Ch 4. Mechanistic insights on melatonin-mediated heat stress regulation in plant -- Ch 5. Melatonin a key regulator of cold stress in plants -- Ch 6. Illustrating recent development in melatonin-heavy metal research in plant -- Ch 7. Melatonin in Nutrient use efficiency of regulation in crop plants -- Ch 8. Melatonin-mediated signalling and regulation of viral and bacterial diseases -- Ch 9. Explicating the role of melatonin in the mitigation of fungal diseases in plants -- Ch 10. Role of melatonin in management of stress tolerance of forest tree species -- Ch 11. Emerging role of melatonin in integrated management of crop pathogens -- Ch 12. Exploring Melatonin's Potential as an Alternative Strategy for Protecting Plants from Biotic Stresses.
    Abstract: This edited book highlights the multifunctional role of the ubiquitous molecule, melatonin in crop plants. The major focus of this edition is to provide a comprehensive insight into the key focus is on Melatonin mediated alleviation of abiotic stresses and pathogens infection. The inception of melatonin as an animal hormone and the subsequent discovery of its multifaceted function in the animal system has revolutionized the research on this penial hormone. During the last decade, the discovery, quantification and functional studies of melatonin as phytohormone has emerged at a rapid pace. Recently, this phyto-protectant has become an integral component of lab and field-based research on the mitigation of adverse effects of climate-driven abiotic stresses and postharvest biology and technology. The book explores melatonin mediated management of various abiotic stresses such as drought, salinity, heat and cold temperature. The book also focuses on role of melatonin in heavy metal stress, viral, bacterial, and fungal diseases, and, also contains chapter on melatonin facilitated nutrient use efficiency in plants. This book is of interest to postharvest industries, horticulturists, scientists, researchers, and students.
    Type of Medium: Online Resource
    Pages: XVI, 242 p. 1 illus. , online resource.
    Edition: 1st ed. 2023.
    ISBN: 9789819967414
    DDC: 571.2
    Language: English
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  • 3
    Publication Date: 2021-03-25
    Description: Heat stress and abscisic acid (ABA) induce leaf senescence, whereas melatonin (MT) and gibberellins (GA) play critical roles in inhibiting leaf senescence. Recent research findings confirm that plant tolerance to diverse stresses is closely associated with foliage lifespan. However, the molecular mechanism underlying the signaling interaction of MT with GA and ABA regarding heat-induced leaf senescence largely remains undetermined. Herein, we investigated putative functions of melatonin in suppressing heat-induced leaf senescence in tomato and how ABA and GA coordinate with each other in the presence of MT. Tomato seedlings were pretreated with 100 μM MT or water and exposed to high temperature (38/28°C) for 5 days (d). Heat stress significantly accelerated senescence, damage to the photosystem and upregulation of reactive oxygen species (ROS), generating RBOH gene expression. Melatonin treatment markedly attenuated heat-induced leaf senescence, as reflected by reduced leaf yellowing, an increased Fv/Fm ratio, and reduced ROS production. The Rbohs gene, chlorophyll catabolic genes, and senescence-associated gene expression levels were significantly suppressed by MT addition. Exogenous application of MT elevated the endogenous MT and GA contents but reduced the ABA content in high-temperature-exposed plants. However, the GA and ABA contents were inhibited by paclobutrazol (PCB, a GA biosynthesis inhibitor) and sodium tungstate (ST, an ABA biosynthesis inhibitor) treatment. MT-induced heat tolerance was compromised in both inhibitor-treated plants. The transcript abundance of ABA biosynthesis and signaling genes was repressed; however, the biosynthesis genes MT and GA were upregulated in MT-treated plants. Moreover, GA signaling suppressor and catabolic gene expression was inhibited, while ABA catabolic gene expression was upregulated by MT application. Taken together, MT-mediated suppression of heat-induced leaf senescence has collaborated with the activation of MT and GA biosynthesis and inhibition of ABA biosynthesis pathways in tomato.
    Electronic ISSN: 1664-462X
    Topics: Biology
    Published by Frontiers Media
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  • 4
    Publication Date: 2021-10-26
    Description: Climate change exacerbates flooding problems due to hurricanes followed by heavy rains, particularly in sub-tropical regions. Consequently, submerged plants experience hypoxia stress which limits agronomic and horticultural crop growth and production. Hypoxia causes oxidative damage by accelerating the lipid peroxidation associated with O2- and H2O2 levels. Additionally, hypoxia increases the accumulation of organic osmoprotectants and antioxidant activity, whereas it decreases the macronutrient (N, P, K, and Zn) uptake. This study aimed at investigating the effects of flooding-induced hypoxia stress on the growth and the physiological, biochemical, and nutritional characteristics of the hydroponically grown southern highbush blueberry (cv. Jewel) plants. In addition, the hypoxia-mitigating effects of conventional silicon (Si-C) and silicon nanoparticles (SiNPs) and their application methods (foliar vs. foliar and rootzone application) were also appraised. Both the Si-C and the SiNPs efficiently alleviated hypoxia-induced oxidative and osmotic damage to cells by enhancing the activities of the enzymatic antioxidants (ascorbate peroxidase, catalase, dehydroascorbate reductase, superoxide dismutase, peroxidase, guaiacol peroxidase, monodehydroascorbate, reductase); the non-enzymatic antioxidants (ascorbic acid and glutathione contents); and the accumulation of compatible solutes (proline and glycinebetaine) in leaves and roots. However, the SiNPs were more effective than Si-C at improving antioxidant activities and osmolytes formation. A strong negative correlation between the antioxidant activities and the lipid peroxidation rate was observed in the SiNP-treated plants under hypoxia stress. The SiNPs also regulated nutrient uptake by increasing the K, N, P, and Zn concentrations while decreasing Fe and Mn concentrations to a less toxic level. Blueberry plants treated with SiNPs responded more effectively to hypoxia stress by maintaining higher antioxidant and osmoprotectant concentrations than blueberry plants treated with Si-C. Additionally, the foliar and rootzone applications yielded better results than the foliar applications only.
    Electronic ISSN: 2073-4395
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
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