Arid
DOI10.1371/journal.pone.0189957
Ectomycorrhizal fungal communities in endangered Pinus amamiana forests
Murata, Masao1; Kanetani, Seiichi2; Nara, Kazuhide1
通讯作者Murata, Masao
来源期刊PLOS ONE
ISSN1932-6203
出版年2017
卷号12期号:12
英文摘要

Interactions between trees and ectomycorrhizal (ECM) fungi are critical for the growth and survival of both partners. However, ECM symbiosis in endangered trees has hardly been explored, complicating conservation efforts. Here, we evaluated resident ECM roots and soil spore banks of ECM fungi from endangered Pinus amamiana forests on Yakushima and Tanegashima Islands, Kagoshima Prefecture, Japan. Soil samples were collected from remaining four forests in the two islands. The resident ECM roots in soil samples were subjected to molecular identification. Soil spore banks of ECM fungi were analyzed via bio-assays using a range of host seedlings (P. amamiana, P. parviflora, P. densiflora and Castanopsis sieboldii) for 6 +/- 8 months. In all remaining P. amamiana forests, we discovered a new Rhizopogon species (Rhizopogon sp. 1), the sequence of which has no match amoung numerous Rhizopogon sequences deposited in the international sequence database. Host identification of the resident ECM roots confirmed that Rhizopogon sp. 1 was associated only with P. amamiana. Rhizopogon sp. 1 was far more dominant in soil spore banks than in resident ECM roots, and its presence was confirmed in nearly all soil samples examined across the major remaining populations. While Rhizopogon sp. 1 did not completely lose compatibility to other pine species, its infection rate in the bioassays was highest in the original host, P. amamiana, the performance of which was improved by the infection. These results indicate that Rhizopogon sp. 1 is very likely to have a close ecological relationship with endangered P. amamiana, probably due to a long co-evolutionary period on isolated islands, and to play the key role in seedling establishment after disturbance. We may need to identify and utilize such key ECM fungi to conserve endangered trees practically.


类型Article
语种英语
国家Japan
收录类别SCI-E
WOS记录号WOS:000418554900042
WOS关键词SCALE GENETIC-STRUCTURE ; SOIL PROPAGULE BANKS ; PRIMARY SUCCESSION ; RESISTANT PROPAGULES ; SPORE BANKS ; SEEDLING ESTABLISHMENT ; CENOCOCCUM-GEOPHILUM ; MYCORRHIZAL NETWORKS ; VOLCANIC DESERT ; RHIZOPOGON
WOS类目Multidisciplinary Sciences
WOS研究方向Science & Technology - Other Topics
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/201687
作者单位1.Univ Tokyo, Grad Sch Frontier Sci, Kashiwa, Chiba, Japan;
2.Kyushu Res Ctr, Forestry & Forest Prod Res Inst, Chuo Ku, Kumamoto, Japan
推荐引用方式
GB/T 7714
Murata, Masao,Kanetani, Seiichi,Nara, Kazuhide. Ectomycorrhizal fungal communities in endangered Pinus amamiana forests[J],2017,12(12).
APA Murata, Masao,Kanetani, Seiichi,&Nara, Kazuhide.(2017).Ectomycorrhizal fungal communities in endangered Pinus amamiana forests.PLOS ONE,12(12).
MLA Murata, Masao,et al."Ectomycorrhizal fungal communities in endangered Pinus amamiana forests".PLOS ONE 12.12(2017).
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