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Trop Anim Health Prod


Title:Mini review on photosensitization by plants in grazing herbivores
Author(s):Hussain SM; Herling VR; Rodrigues PHM; Naz I; Khan H; Khan MT;
Address:"Faculty of Animal Husbandry and Veterinary Sciences, The University of Agriculture Peshawar, Peshawar, 23200, Pakistan. syeda@aup.edu.pk. College of Animal Sciences and Food Engineering, University of Sao Paulo, Pirassununga, Sao Paulo, 13635-900, Brazil. syeda@aup.edu.pk. College of Animal Sciences and Food Engineering, University of Sao Paulo, Pirassununga, Sao Paulo, 13635-900, Brazil. Department of Plant Pathology, Faculty of Crop Protection, The University of Agriculture Peshawar, Peshawar, 23200, Pakistan. Faculty of Animal Husbandry and Veterinary Sciences, The University of Agriculture Peshawar, Peshawar, 23200, Pakistan"
Journal Title:Trop Anim Health Prod
Year:2018
Volume:20180406
Issue:5
Page Number:925 - 935
DOI: 10.1007/s11250-018-1583-x
ISSN/ISBN:1573-7438 (Electronic) 0049-4747 (Linking)
Abstract:"Photosensitization is severe dermatitis or oxidative/chemical changes in the epidermal tissues activated by the light-induced excitation of molecules within the tissue. It is a series of reactions mediated through light receptors and is more common when the plant-produced metabolites are heterocyclic/polyphenols in nature. The areas affected are exposed body parts and mostly non-pigmented areas with least ultraviolet protection. Similarly, cellular alteration also occurs in the affected animal's dermal tissues and body parts and grazing animals by the accumulation and activation of photodynamic molecules. Photo-oxidation can also occur within the plant due to the generation of reactive oxygen species causing damage and degradation in the form of free radicals and DNA. During the last few decades, many new tropical grass species have been introduced in the grazing lands which are genetically modified, and the animals grazing on them are facing various forms of toxicity including photosensitization. The plant's secondary metabolites/drugs may cause toxicity when bacteria, viral agents, fungi (Pithomyces chartarum), or neoplasia injures the liver and prevents the phylloerythrin excretion. All these may disturb the liver enzymes and blood profile causing a decrease in weight and production (wool and milk etc.) with severe dermal, digestive, and nervous problems. Recent advancements in OMICS (cellomics, ethomics, metabolomics, metabonomics, and glycomics) have enabled us to detect and identify the plants' secondary metabolites and changes in the animal's physiology and histopathology as a causative of photosensitivity. The review focuses on types of photosensitization, reasons, secondary metabolic compounds, chemistry, and environmental effect on plants"
Keywords:Animals Cattle Chlorophyll/*analogs & derivatives/chemistry Climate DNA/chemistry *Herbivory Inflammation Light Liver/*drug effects/pathology Oxygen/chemistry Photosensitivity Disorders/chemically induced/*pathology Pigmentation Plants/*chemistry Poaceae;
Notes:"MedlineHussain, Syeda M Herling, Valdo Rodrigues Rodrigues, Paulo Henrique Mazza Naz, Ishrat Khan, Hamayun Khan, Muhammad Tahir eng Review 2018/04/07 Trop Anim Health Prod. 2018 Jun; 50(5):925-935. doi: 10.1007/s11250-018-1583-x. Epub 2018 Apr 6"

 
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