Abstract
Wood decomposition by soil microorganisms is vital to carbon and nutrient cycles of forested ecosystems. Different wood types decompose at different rates; however, it is not known if there are differences in microbial community succession associated with the decay of different wood types. In this study, the microbial community associated with the decay of pine (decay-susceptible wood), western red cedar (decay resistant) and ACQ-treated pine (Ammoniacal Copper Quaternary, preservative-treated pine for decay resistance) in forest soil was characterized using DNA sequencing, phospholipid fatty acid (PLFA) analysis, and microbial activity over a 26-month period. Bray–Curtis ordination using an internal transcribed spacer (ITS) sequence and PLFA data indicated that fungal communities changed during succession and that wood type altered the pattern of succession. Nondecay fungi decreased over the 26 months of succession; however, by 18 months of decay, there was a major shift in the fungal communities. By this time, Trametes elegans dominated cedar and Phlebia radiata dominated pine and ACQ-treated pine. The description of PLFA associated with ACQ-treated pine resembled cedar more than pine; however, both PLFA and ITS descriptions indicated that fungal communities associated with ACQ-treated pine were less dynamic, perhaps a result of the inhibition by the ACQ preservative, compared with pine and cedar. Overall, fungal community composition and succession were associated with wood type. Further research into the differences in community composition will help to discern their functional importance to wood decay.
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Acknowledgments
The authors acknowledge the support for this work provided by the National Science Foundation (MCB-0641788) and the Lucas Biodeterioration Center. Also, special thanks to Mr. Min Lee for his help in this research.
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Prewitt, L., Kang, Y., Kakumanu, M.L. et al. Fungal and Bacterial Community Succession Differs for Three Wood Types during Decay in a Forest Soil. Microb Ecol 68, 212–221 (2014). https://doi.org/10.1007/s00248-014-0396-3
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DOI: https://doi.org/10.1007/s00248-014-0396-3