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Mineralization and Plant Availability of Phosphorus from Biomass of Hyaline and Melanic Fungi
Author(s) -
Kapoor K. K.,
Haider K.
Publication year - 1982
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1982.03615995004600050014x
Subject(s) - mineralization (soil science) , chaetomium , curvularia , biology , mycelium , botany , phosphorus , penicillium citrinum , incubation , agronomy , penicillium , chemistry , soil water , ecology , organic chemistry , biochemistry
This study was conducted to evaluate the mineralization and phosphorus availability to plants from fungal biomass and to determine differences between hyaline and melanic fungi in this respect. In a period of 5 weeks, wheat plants took up 6 to 16% of applied 32 P in the form of fungal mycelia from soil. The availability of P from this biomass was lowest with highly melanized fungi Curvularia lunata and Stachybotrys chartarum (6 to 11%) and highest in the case of hyaline fungi Paecilomyces fusisporus and Penicillium chrysogenum (12 to 16%). This compared to >20% uptake of applied inorganic phospate. Carbon mineralization of fungal biomass during a 5‐week‐incubation period decreased with increase in melanization. Phosphorus availability to plants followed C mineralization but the correlation was not highly significant. Sixty to 70% of the P from fungal biomass was extractable with sodium bicarbonate predominantly in an organic form. Plant availability of this extractable organic P was lower in the case of melanized fungi than in hyaline.