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ID 111952
タイトル別表記
Mycorrhizal generalist with wood-decay fungi
著者
Ogura-Tsujita, Yuki Saga University
Gebauer, Gerhard University of Bayreuth
Xu, Hui Tohoku University
Fukasawa, Yu Tohoku University
Umata, Hidetaka Kagoshima University
Tetsuka, Kenshi Yaku-shima Yakutane-goyo Reseaech Group
Kubota, Miho Saga University
Schweiger, Julienne M.‐I. University of Bayreuth
Maekawa, Nitaro Tottori University
Maki, Masayuki Tohoku University
Isshiki, Shiro Saga University
Yukawa, Tomohisa National Museum of Nature and Science
キーワード
mycoheterotrophy
mycorrhiza
orchid
stable isotope
symbiotic germination
wood-decaying fungi
資料タイプ
学術雑誌論文
抄録
The climbing orchid Erythrorchis altissima is the largest mycoheterotroph in the world. Although previous in vitro work suggests that E. altissima has a unique symbiosis with wood-decaying fungi, little is known about how this giant orchid meets its carbon and nutrient demands exclusively via mycorrhizal fungi. In this study, the mycorrhizal fungi of E. altissima were molecularly identified using root samples from 26 individuals. Furthermore, in vitro symbiotic germination with five fungi and stable isotope compositions in five E. altissima at one site were examined. In total, 37 fungal operational taxonomic units (OTUs) belonging to nine orders in Basidiomycota were identified from the orchid roots. Most of the fungal OTUs were wood-decaying fungi, but underground roots had ectomycorrhizal Russula. Two fungal isolates from mycorrhizal roots induced seed germination and subsequent seedling development in vitro. Measurement of carbon and nitrogen stable isotope abundances revealed that E. altissima is a full mycoheterotroph whose carbon originates mainly from wood-decaying fungi. All of the results show that E. altissima is associated with a wide range of wood- and soil-inhabiting fungi, the majority of which are wood-decaying taxa. This generalist association enables E. altissima to access a large carbon pool in woody debris and has been key to the evolution of such a large mycoheterotroph.
掲載誌名
Molecular Ecology
ISSN
1365294X
09621083
cat書誌ID
AA10935085
出版者
Wiley
27
5
開始ページ
1324
終了ページ
1337
発行日
2018-03-06
備考
This is the peer reviewed version of the following article: Ogura‐Tsujita Y, Gebauer G, Xu H, et al. The giant mycoheterotrophic orchid Erythrorchis altissima is associated mainly with a divergent set of wood‐decaying fungi. Mol Ecol. 2018;27:1324–1337. which has been published in final form at https://doi.org/10.1111/mec.14524. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
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出版社版DOI
出版社版URL
フルテキストファイル
言語
eng
著者版フラグ
著者版
部局
生物資源系