Distribution and development of sclerotium grains as influenced by aluminum status in volcanic ash soils
2002
"Watanabe, M. (Tokyo Inst. of Technology, Yokohama (Japan)) | Kado, T. | Ohta, H. | Fujitake, N. "
"The distribution of sclerotium grains, which are considered to be the resting bodies formed by fungi species, was studied in 5 Andosol profiles in central Japan. Sclerotium grains were detected in the surface A and buried A horizons of nonallophanic (Alp/Alo>0.5) soils but not in allophanic (Alp/Alo<0.5) soils. The maximum density of the sclerotium grains in each profile was approximately 2.5g kg**-1. A highly positive relationship was observed between the mean weight of the sclerotium grains and the content of exchangeable aluminum (Al sup(3+)) in soils. Aluminum concentration inside of the sclerotium grains was confirmed by energy dispersive X-ray spectrometer (EDS) analysis. The results obtained suggest that the status of active Al in soils is an important factor for sclerotium development."
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