ibclogo XVI International Botanical Congess

Abstract Number: 4840
Poster No. = 1722


HOST SPECIES EFFECTS ON GROWTH, AMINO ACIDS, ORGANIC ACIDS AND SUGAR CONTENT OF SANTALUM ALBUM


A. M. Radomiljac2,1, J. A. McComb1, J. S. Pate3 and K. U. Tennakoon3, 1Murdoch University, W. Australia, 2Department of Conservation and Land Management, W. Australia, 3The University of Western Australia


Santalum album seedlings were grown as with Sesbania formosa, Acacia trachycarpa, A. ampliceps or Eucalyptus camaldulensis as hosts, or without a host. Sandal growth was greater and its root:shoot ratio lower when parasitising the legumes than the eucalypt. Haustoria number varied markedly between species. There was close similarity between sandal and the legume hosts in concentration and composition of xylem sap amino acids, but marked differences between the sandal and the eucalypt. Host xylem sap contained variable amounts of sucrose, fructose and glucose while the sandal sap was dominated by fructose. Organic acid composition of the sandals was unaffected by differences in the organic acids of hosts.Prof. Jen A. McComb

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