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Title: Intercropped silviculture systems, a key to achieving soil fungal community management in eucalyptus plantations

Journal Article · · PLoS ONE
 [1];  [2];  [2];  [3];  [4];  [2]
  1. Embrapa Solos (Brazil)
  2. Federal University of Rio de Janeiro (Brazil)
  3. Embrapa Agrobiologia (Brazil)
  4. Michigan State Univ., East Lansing, MI (United States)

Fungi are ubiquitous and important contributors to soil nutrient cycling, playing a vital role in C, N and P turnover, with many fungi having direct beneficial relationships with plants. However, the factors that modulate the soil fungal community are poorly understood. We studied the degree to which the composition of tree species affected the soil fungal community structure and diversity by pyrosequencing the 28S rRNA gene in soil DNA. We were also interested in whether intercropping (mixed plantation of two plant species) could be used to select fungal species. More than 50,000 high quality sequences were analyzed from three treatments: monoculture of Eucalyptus; monoculture of Acacia mangium; and a mixed plantation with both species sampled 2 and 3 years after planting. We found that the plant type had a major effect on the soil fungal community structure, with 75% of the sequences from the Eucalyptus soil belonging to Basidiomycota and 19% to Ascomycota, and the Acacia soil having a sequence distribution of 28% and 62%, respectively. The intercropping of Acacia mangium in a Eucalyptus plantation significantly increased the number of fungal genera and the diversity indices and introduced or increased the frequency of several genera that were not found in the monoculture cultivation samples. Our results suggest that management of soil fungi is possible by manipulating the composition of the plant community, and intercropped systems can be a means to achieve that.

Research Organization:
CTCCR; FCB; RSP; GMC; ASR; JMT
Sponsoring Organization:
USDOE
Grant/Contract Number:
FC02-07ER64494
OSTI ID:
1188329
Journal Information:
PLoS ONE, Vol. 10, Issue 2; ISSN 1932-6203
Publisher:
Public Library of ScienceCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 37 works
Citation information provided by
Web of Science

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Cited By (7)

The Microbiome of Eucalyptus Roots under Different Management Conditions and Its Potential for Biological Nitrogen Fixation journal June 2017
Understanding the enhanced litter decomposition of mixed-species plantations of Eucalyptus and Acacia mangium journal November 2017
Short-term effect of Eucalyptus plantations on soil microbial communities and soil-atmosphere methane and nitrous oxide exchange journal October 2018
A review of nutrient, water and organic matter dynamics of tropical acacias on mineral soils for improved management in Southeast Asia journal May 2019
High-yield grass Pennisetum sinese Roxb plantation and organic manure alter bacterial and fungal communities structure in an ecological agriculture farm journal May 2020
Soil Physicochemical Properties and the Rhizosphere Soil Fungal Community in a Mulberry (Morus alba L.)/Alfalfa (Medicago sativa L.) Intercropping System journal February 2019
Impact of intercropping on the coupling between soil microbial community structure, activity, and nutrient-use efficiencies journal January 2019