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Effects of simulated nitrogen deposition on ectomycorrhizae community structure in hybrid larch and its parents grown in volcanic ash soil: The role of phosphorous

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Title: Effects of simulated nitrogen deposition on ectomycorrhizae community structure in hybrid larch and its parents grown in volcanic ash soil: The role of phosphorous
Authors: Wang, Xiaona Browse this author
Agathokleous, Evgenios Browse this author
Qu, Laiye Browse this author
Fujita, Saki Browse this author
Watanabe, Makoto Browse this author
Tamai, Yutaka Browse this author
Mao, Qiaozhi Browse this author
Koyama, Akihiro Browse this author
Koike, Takayoshi Browse this author →KAKEN DB
Keywords: Community structure
Ectomycorrhizal fungi
Volcanic ash soil
Issue Date: 15-Mar-2018
Publisher: Elsevier
Journal Title: Science of The Total Environment
Volume: 618
Start Page: 905
End Page: 915
Publisher DOI: 10.1016/j.scitotenv.2017.08.283
Abstract: Abstract:With the rapid industrial development and modern agricultural practices, increasing nitrogen (N) deposition can cause nutrient imbalance in immature volcanic ash soil commonly found in Japan. Larch species, widely distributed in northeast Eurasia, are associated with ectomycorrhizal (ECM) fungi which play a critical role in nutrient acquisition for their hosts. In this study, we investigated species richness and diversity of ECM fungi associated with a hybrid larch (F1) and its parents, Dahurian larch (Larix gmelinii var. japonica) and Japanese larch (L. kaempferi), under simulated N deposition (0 and 100 kg ha-1yr-1) with/without phosphorous (P) (0 and 50 kg ha-1yr-1). Seedlings planted in immature volcanic ash with low nutrient availability were subjected to the N and P treatments for fifteen months. We found that response of ECM community structure to the increased nutrient availability depended on host genotypes. Nutrient addition significantly affected ECM structure in Japanese larch, but no such significant effect was found for Dahurian larch. Effects of the nutrient addition to ECM fungal community in F1 was intermediate. F1 was tolerant to high N loading, which was due to consistent, relatively high association with Suillus sp. and Hebeloma sp. F1 showed heterosis in relative biomass, which was most apparent under high N treatments. This co-variation of ECM fungal community structure and F1 biomass in response to N loading suggest that ECM community structure might play an important role in host growth. The present findings indicate effects of N deposition on ECM fungal community structure can depend on larch species, thus it is challenging to predict general trends.
Rights: © 2018. Licensed under the Creative Commons [10.1016/j.scitotenv.2017.08.283].© 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Type: article (author version)
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 小池 孝良

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