Effective Degradation of Phenolic Glycoside Rhododendrin and its Aglycone Rhododendrol by Cecal Feces of Wild Japanese Rock Ptarmigans

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  • TSUCHIDA Sayaka
    Laboratory of Animal Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University
  • OHARA Yoko
    Laboratory of Animal Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University
  • KURAMOCHI Kouji
    Laboratory of Organic Chemistry, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University
  • MURATA Koichi
    College of Bioresource Sciences, Nihon University
  • USHIDA Kazunari
    Laboratory of Animal Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University

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Other Title
  • 野生ニホンライチョウ腸内細菌によるフェノール性配糖体ロドデンドリンと そのアグリコンであるロドデノールの効率的分解
  • Effective degradation of phenolic glycoside rhododendron and its aglycone rhododendron by feces of wild Japanese rock ptarmigans
  • Effective degradation of phenolic glycoside rhododendrin and its aglycone ghododendrol by cecal feces of wild Japanese rock ptarmigans

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<p>　Japanese rock ptarmigans (Lagopus muta japonica) graze alpine plants as a major food resource. These alpine plants harbor defensive chemicals, often toxic, to avoid animal herbivory. Wild Japanese rock ptarmigans decompose these chemicals to avoid any ill effect from such plants, and detoxification presumably depends on gut-associated bacteria. In this report, we demonstrated the efficient degradation of a phenolic glycoside, rhododendrin, and its aglycone, rhododendrol, by cecal feces of wild Japanese rock ptarmigans, as compared with those from captive-bred Svalbard rock ptarmigans (L. m. hyperborea), which have shown the much less efficient degradation of rhododendrol. The present results indicate the importance of gut-associated bacteria for the survival of wild Japanese rock ptarmigans.</p>

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