外生菌根真菌与丝状真菌混合对红松凋落物降解效能的影响

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Abstract

Using a common filamentous fungi(Alternaria sp.) and ectomycorrhizal fungi(Xerocomus Pulverulentus and Clitocybe maxima) from original Pinus koraiensis forest,we investigated the ability of different combination of strains to decompose fresh Pinus koraiensis litterfall by measuring mass loss rate,enzymes activity,and N and P contents during fermentation process.The results showed that the total mass loss rate of AX(Alternaria sp.and X.Pulverulentus) reached the highest values(up to 18.33%) after 60 days,while mat of AC(Alternaria sp.and C.maxima) was 13.27% because of antagonism.After 20 days the highest laccase activity of X. Pulverulentus,C.maxima and AX was 0.093 U·mL^-1,0.063 U·mL^-1 and 0.047 U·mL^-1,respectively.During the same period,the highest cellulase activity of Alternaria sp.,AC and AX was 0.59 U·mL^-1,0.57 U·mL^-1 and 0.53 U·mL^-1,while cellulase activity of AX reached 0.48 U·mL^-1 after 50 days.During the fermentation process,N content of AX decreased significantly by 12.21%,and P content by 25.82%.This study further revealed the mechanism of different functional fungi groups to degrade forest litterfall and the interaction among fungal communities.

Key words： Ectomycorrhiza Filamentous fungi Litter Decomposition rate Lignocellulolytic enzymes

Received: 25 June 2011

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	FENG Le
	SONG Fu-qiang

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FENG Le,SONG Fu-qiang. The impacts of combination of ectomycorrhizal fungi with filamentous fungi on decomposition of Korean-pine litterfall[J]. , 2011, 30(3): 315-320.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2011/V30/I3/315

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