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Responses of ectomycorrhizal diversity of larch and its hybrid seedlings and saplings to elevated CO2, O3, and high nitrogen loading

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Title: Responses of ectomycorrhizal diversity of larch and its hybrid seedlings and saplings to elevated CO2, O3, and high nitrogen loading
Authors: QU, Laiye Browse this author
WANG, Xiaona Browse this author
MAO, Qiaozhi Browse this author
AGATHOKLEOUS, Evgenios Browse this author
CHOI, DongSu Browse this author →KAKEN DB
TAMAI, Yutaka Browse this author →KAKEN DB
WATANABE, Toshihiro Browse this author →KAKEN DB
KOIKE, Takayoshi Browse this author →KAKEN DB
Keywords: Elevated CO2
nitrogen deposition, larch
hybrid larch
ectomycorrhiza (ECM)
Issue Date: 2022
Publisher: Hokkaido University Forests, EFRC
Journal Title: Eurasian Journal of Forest Research
Volume: 22
Start Page: 23
End Page: 27
Abstract: The genus Larix (larch) is broadly distributed in northern Eurasia, including Japan and Korea. Larch species are a typical afforestation tree in northeastern China, Russia, Korea, and Japan. Larch and red pine seedlings inoculated with Pisolithus arhizus (earth-ball fungus) have increased photosynthetic rates as well as being acid-soil tolerant. Infecting P. arhizus with a variety of ectomycorrhizae (ECM) accelerated these functions. Under elevated CO2 (about 700 ppm) conditions, larch and pine seedlings infected with ECM showed no down-regulation in photosynthesis and displayed higher growth rates than those grown in ambient CO2 (380 ppm) conditions. Simulated nitrogen (N) deposition (50 kg N hr-1yr-1) increased photosynthesis and growth of F1 hybrid larch for the initial two years. There were no significant effects for the next three to eight years on Brown Forest Soil. Among the three species (Japanese, Dahurian and F1 hybrid larch), the dominant ECM species preferred N. Elevated O3 decreased growth, ECM infection rates, and ECM species diversity; however, elevated CO2 moderated or increased them in hybrid larch F 1. After elevated CO2 and O3 fumigation on F1 seedlings, we found Suillus sp., a larch specialist ECM in F1, which means these ECM will be effective materials for larch plantations.
Type: bulletin (article)
Appears in Collections:Eurasian journal of forest research > Vol.22

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