Journal
BIOLOGY AND FERTILITY OF SOILS
Volume 48, Issue 4, Pages 385-391Publisher
SPRINGER
DOI: 10.1007/s00374-011-0638-1
Keywords
Ectomycorrhizal fungi; Mycorrhiza helper bacteria; Boletus edulis; Bacillus cereus; Pinus thunbergii
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Funding
- Chinese Special Fund Project for the Scientific Research of the Forest Public Welfare Industry [201004061]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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The present greenhouse study was undertaken to evaluate the effects of co-inoculating the ectomycorrhizal (ECM) fungus Boletus edulis with the mycorrhiza helper bacterium Bacillus cereus HB12 or HB59 on the growth and nutrient uptake of Pinus thunbergii. The inoculation with mycorrhiza helper bacterium significantly (P a parts per thousand currency signaEuro parts per thousand 0.05) increased the ectomycorrhizal colonization. Treatments with dual inoculum (the mycorrhiza helper bacterium plus mycorrhiza) significantly (P a parts per thousand currency signaEuro parts per thousand 0.05) increased the P. thunbergii growth. Bacteria-mycorrhizae interactions resulted in a great utilization of phosphate and potassium. The single inoculation resulted in a higher root activity than the control while the co-inoculation led to the highest root activity. The 6-CFDA staining assay showed that B. cereus enhanced fungal activity in ectomycorrhizal symbiosis. The results conclusively suggest that B. cereus isolated from the rhizosphere of P. thunbergii can potentially be used as individual inoculant or co-inoculated with ECM fungi to increase the production in sustainable ecological systems. These results support the potential use of B. cereus (HB12 or HB59) and B. edulis as mixed inoculants stimulating growth of P. thunbergii.
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