Results 11 to 20 of about 5,719 (219)
Eumelanin and pheomelanin are predominant pigments in bumblebee (Apidae: Bombus) pubescence [PDF]
PeerJ, 2017 Background Bumblebees (Hymenoptera: Apidae: Bombus) are well known for their important inter- and intra-specific variation in hair (or pubescence) color patterns, but the chemical nature of the pigments associated with these patterns is not fully ...
Carlo Polidori +2 more
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Condition-dependence of pheomelanin-based coloration in nuthatches Sitta europaea suggests a detoxifying function: implications for the evolution of juvenile plumage patterns [PDF]
Scientific Reports, 2017 Adult-like juvenile plumage patterns often signal genotypic quality to parents. During adulthood, the same patterns often signal quality to mates. This has led to assume that adult-like juvenile plumage is a developmental consequence of sexual selection ...
Ismael Galván
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Pheomelanin pigment remnants mapped in fossils of an extinct mammal
Nature Communications, 2019 Chemical imaging and spectroscopy have previously been used to identify eumelanin residue in fossils and infer dark coloration. Here, Manning and colleagues develop an approach to identify pheomelanin (red pigment) residues and ascertain their ...
Phillip L. Manning +14 more
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Pigment Intensity in Dogs is Associated with a Copy Number Variant Upstream of KITLG. [PDF]
, 2020 Dogs exhibit a wide variety of coat color types, and many genes have been identified that control pigment production, appearance, and distribution. Some breeds, such as the Nova Scotia Duck Tolling Retriever (NSDTR), exhibit variation in pheomelanin ...
Affolter, Verena +6 more
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Molecules, 2023 1,4-Benzothiazines are the main building blocks of the naturally occurring pheomelanin pigments, and their chromophoric properties have been strongly related to the well-known phototoxicity of these pigments, partly responsible for the high incidence of ...
Maria Laura Alfieri, Lucia Panzella
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PLoS ONE, 2022 Growing concern of antibiotic resistance has increased research efforts to find nonspecific treatments to inhibit pathogenic microorganisms. In this regard, photodynamic inactivation is a promising method.
Denisse Fuentes-López +3 more
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Oxidative physiology is weakly associated with pigmentation in birds
Ecology and Evolution, 2022 The mechanistic link between avian oxidative physiology and plumage coloration has attracted considerable attention in past decades. Hence, multiple proximal hypotheses were proposed to explain how oxidative state might covary with the production of ...
Attila Marton +11 more
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Frontiers in Microbiology, 2023 Morchella sextelata, a highly sought-after edible mushroom worldwide, is evaluated based on its cap color as an essential commercial property indicator. In the present study, the effects of blue light on cap pigmentation in M.
Zhiheng Qiu +19 more
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A significance of botanical and synthetic ingredients in supporting skin depigmentation process [PDF]
Farmacja Polska, 2021 Melanogenesis is a process catalyzed by tyrosinase enzyme leading to synthesis of two types of pigment in the skin: black-brown eumelanin and red-yellow pheomelanin. Pheomelanin is synthesized in the second stage of melanosome maturation, while eumelanin-
Natalia Magdalena Schäfer +3 more
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Evidence for pheomelanin sheet structure [PDF]
Applied Physics Letters, 2018 Melanin remains one of the most enigmatic of pigments. It occurs in a variety of forms but is perhaps best known for its role in providing ultra-violet protection of skin as brown/black eumelanin and red/yellow pheomelanin. Despite decades of research, many questions remain about the structure, spectroscopy, and biology of both forms.
A. D. Davy, D. J. S. Birch
openaire +2 more sources