Effects of Water Stress on the Endophytic Fungal Communities of Pinus koraiensis Needles Infected by Cenangium ferruginosum

Title
Effects of Water Stress on the Endophytic Fungal Communities of Pinus koraiensis Needles Infected by Cenangium ferruginosum
Author(s)
배한홍이선근[이선근]이승규[이승규]서상태[서상태]이종규[이종규]
Keywords
CHESTNUT INK DISEASE; PHYTOPHTHORA-KATSURAE; DOUGLAS-FIR; LEAVES; KOREA; IDENTIFICATION; DIVERSITY; CONIFERS
Issue Date
201412
Publisher
KOREAN SOC MYCOLOGY
Citation
MYCOBIOLOGY, v.42, no.4, pp.331 - 338
Abstract
To examine the effects of water stress and Cenangium ferruginosum (CF) on the fungal endophytic community of needles of Pinus koraiensis (PK), fungal endophytes isolated from the needles of 5-year-old PK seedlings were compared before and after exposure to water stress conditions and artificial inoculation with CF ascospores. Artificial CF inoculation was successfully confirmed using PCR with CF-specific primers (CfF and CfR). For comparison of the degree of water deficit in water-stressed and control groups of PK seedlings infected with CF, the water saturation deficit and water potential were measured. Lower water potential estimates were found in the water-stressed seedlings than in the control group. The fungal endophytes isolated from the second-year needles of non-water-stressed seedlings before and after CF inoculation revealed that primary saprobes were approximately 30% and 71.7%, respectively, and the remaining endophytes were rot fungi or pathogens. Sixty days after CF inoculation, diverse fungal endophytes in the first-year needles were isolated from the water-stressed seedlings. However, some fungal endophytes isolated from the non-water-stressed seedlings were also identified. Fungal endophytes in the second-year needles of the water-stressed and non-water-stressed seedlings were approximately 8% and 71.7% of saprobes, respectively, and the remaining endophytes were rot fungi or pathogens. On the basis of the results, we conclude that water deficit and CF can have an effect on fungal endophytic communities in the needles of PK seedlings.
URI
http://hdl.handle.net/YU.REPOSITORY/30304http://dx.doi.org/10.5941/MYCO.2014.42.4.331
ISSN
1229-8093
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생명공학부 > 생명공학부 > Articles
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