Chemical composition and mycobiota of bleached portion of Camellia japonica leaf litter at two stands with the different nitrogen status
2003
Koide, K. (Kyoto Univ. (Japan)) | Osono, T.
Koide, K. and Osono, T. : Chemical Composition and Mycobiota of Bleached Portion of Camellia Leaf Litter at Two Stands with the Different Nitrogen Status. J. Jpn. For. Soc. 85 : 359-363, 2003 A distinctive bleaching is often recognized on Camellia japonica leaf litter. In a stand in which nitrogen was saturated and a control stand, the chemical composition and the mycobiota of bleached portion were studied and compared with those of the non-bleached area. Lignin and polyphenol concentrations in the bleached portion were lower than in the non-bleached portion. Carbohydrate concentration was higher in the non-bleached portion than in the bleached portion, and was higher in the control stand than in the nitrogen-saturated stand. In the bleached portion, 10 species were isolated, including anamorphic Coccomyces sp. and Xylariaceous ascomycetes Xylaria sp. (anamorph) and Geniculosporium sp. In the non-bleached portion, 7 species were isolated including Geniculosporium sp., Nodulisporium sp. The mycobiota did not differ between the nitrogen-saturation site and the control site. These results suggest that the bleaching of C. japonica leaf litter was produced by the degradation of lignin and polyphenol by Xylariaceous and Rhytismaceous ascomycetes.
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