兰科石斛属植物菌根真菌研究进展

Research Advances in Mycorrhizal Fungi of Dendrobium (Orchidaceae)

摘要:

石斛属(Dendrobium)隶属于兰科(Orchidaceae)树兰亚科(Epidendroideae)石斛兰族(Dendrobiinae),是兰科最大的属之一,终生附生于树上或岩石上。石斛属很多种类具有很高的药用价值与观赏价值。由于人为过度采挖和野生生境的破坏,使得野生石斛资源濒临灭绝。石斛属植物为典型的兰科菌根植物,在自然条件下需要与真菌共生,才能完成生活史。菌根真菌对于石斛属植物的种子萌发和植株生长具有重要的作用。对石斛属植物菌根的形成、菌根真菌的作用、菌根真菌多样性及菌根技术在石斛属植物中的应用做了评述,并对今后的研究内容和重点提出了一些思路。

Abstract:

Dendrobium, epiphyticly growing on tree or rock, is one of the largest genus in orchid family, belonging to Dendrobiinae of Epidendroideae. Most of species in this genus have high medicinal and ornamental values. Howerver, the wild species of Dendrobium has been threatened because of over-collection and habitat deterioration in recent years. Dendrobium is one of typical orchid mycorrhizal plants, it needs symbiosisn with mycorrhizal fungi to complete its life cycle under natural conditions. Mycorrhizal fungus have important roles in Dendrobium seed germination and plant growth. the conformation of Dendrobium mycorrhizae, effects and diversity of mycorrhizal fungi in Dendrobium were reviewed, as well as the mycorrhizal technology utilization in Dendrobium. In addition, some ideas based on the current researches are proposed for future studies.