The Ability of the Rf32 Strain (＂Cryptosporiopsis＂, Helotiales) to Form Ericoid Mycorrhiza Symbioses with Rhododendron Species

Rf32菌株（Cryptosporiopsis, Helotiales）與杜鵑屬植物形成杜鵑類菌根之研究

林瑞進(Lei-Chen Lin)

《台灣林業科學》 30卷2期 (2015/06) Pp. 89-96

https://doi.org/10.7075/TJFS.201506_30(2).0001

摘要

本研究室已成功證實自台灣杜鵑根系中分離之Rf32菌株係屬柔膜菌目，擬隱孢子屬之杜鵑類菌根菌，亦證實此菌株菌具有分解枯落物的能力。本研究更深入探討此杜鵑類菌根菌是否能與其他杜鵑屬植物共生形成菌根。試驗結果顯示，此Rf32菌株皆能成功與2種平戶杜鵑及3種台灣原生種杜鵑共生，且於植株根細皮層細胞中都可發現菌絲複合體之杜鵑類菌根構造；因此，本研究證實Rf32菌株能與平戶杜鵑（粉白杜鵑及大紅杜鵑）及台灣原生種杜鵑（紅毛杜鵑、烏來杜鵑及西施花）共生，並與其根系形成杜鵑類菌根。

關鍵字

杜鵑類菌根 ； 杜鵑類菌根菌 ； 杜鵑屬植物

並列摘要

The Rf32 strain isolated from Rhododendorn formosanum was demonstrated to be a species of Cryptosporiopsis (Dermateaceae, Helotiales) of ericoid mycorrhizal fungi (ERMF), and has the ability to decompose organic matter. This study further documented the symbiotic ability of the Rf32 fungal strain in association with 5 Rhododendron species. Inoculation results revealed that Cryptosporiopsis sp. Rf32-inoculated Rhododendron seedlings all grew vigorously, and the hyphal complex was found in cortical cells of root associations. This study demonstrated that Cryptosporiopsis sp. had symbiotic ability with R. mucronatum cv. Akemono, R. scabrum, R. kanehirai, R. ellipticum, and R. rubropilosum Hayata var. rubropilosum, and could form ericoid mycorrhiza in vitro with these Rhododendron seedlings.

並列關鍵字

Ericoid mycorrhiza ； Ericoid mycorrhizal fungus ； Rhododendron spp