TITLE

Vegetation Influence on Ectomycorrhizal Inoculum Available to Sub-Arctic Willow (Salix lapponum L.) Planted in an Upland Site

AUTHOR(S)
Milne, J. M.; Ennos, R. A.; Hollingsworth, P. M.
PUB. DATE
March 2006
SOURCE
Botanical Journal of Scotland;2006, Vol. 58 Issue 1, p19
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Restoration of scrub and woodland in deforested upland sites is an important conservation activity. However, little is known about the mycorrhizal colonisation potential of upland soils or the factors that influence the distribution of mycorrhizal inoculum. We investigated the effect of existing vegetation on mycorrhizal colonisation potential for a sub-arctic willow (Salix lapponum) by planting uninoculated cuttings into plots representing two upland habitats with either grass and herbs (‘grass’) or Vaccinium myrtillus (‘vaccinium’) and assessing mycorrhizal colonisation after 14 months using morphological and molecular techniques. From 40 willow cuttings (20 in each habitat), DNA sequences of five ectomycorrhizal (EcM) fungal taxa were recovered: Laccaria proxima, Thelephora terrestris, Hebeloma sp., ‘Thelephoraceae sp.’ and ‘Pezizales sp.’ Cuttings in the ‘grass’ habitat were dominated by Laccaria proxima and ‘Pezizales sp.’ and in the ‘vaccinium’ habitat by Thelephora terrestris which was absent from the ‘grass’ habitat. There were no significant differences between habitats in frequency of EcM inoculum (overall percentage of cuttings colonised = 70%) or colonisation potential (overall mean percentage of root tips colonised per cutting = 20%). These data suggest that the mycorrhizal colonisation potential and diversity of fungi available to willow in these upland soils are low and planted willow may benefit from inoculum enhancement.
ACCESSION #
24829423

 

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