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Mycorrhiza and root development of Eucalyptus grandis in vitro

Asun, M., Malajczuk, N., Dell, B. and Brundrett, M. (1996) Mycorrhiza and root development of Eucalyptus grandis in vitro. In: First International Conference on Mycorrhizae (ICOM), 31 July - 3 August, California.


Fifteen Australian ectomycorrhizal fungi were compared on their ability to stimulate root growth and form mycorrhiza in vitro. With the exception of H4325 (Protubera), H4317 (Setchelliogaster) and E494 (Descolea maculata) all fungi significantly increased the number of lareral root tips at day 27 compared with non-inoculated seedlings. The majority of inoculated seedlings produced from between 20 and 25 tips per seedling compared to.(controls?). Seedling inoculated with h2o00 (Scleroderma), H4403 (Paxillogaster) and E4869 (Amanita) produced more than 25 tips. However, not all of these fungi formed mycorrhiza in vitro. All fungi decreased the length of the main root of E. grandis seedlings at day 14 after inoculation compared with control seedlings with the exception of E766 (Laccaria laccata) which stimulated extensive root production. It is possible that this isolate could be used as a tool for tissue culture eucalpts which are difficult to root. Further, the results indicate that this technique is unsuitable for in vitro investigations of mycorrhizal development on eucalypt roots for all mycorrhizal isolates.

Item Type: Conference Item
Murdoch Affiliation(s): School of Biological and Environmental Sciences
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