Distinguishing isolates of Aureobasidium on the basis of their ability to utilise lignin breakdown products as a sole carbon source

IRG/WP 96-10151

M W Schoeman, D J Dickinson

Wild isolates of Aureobasidium were obtained by dilution plating from a ca 20 year old painted pine window frame. Four isolates were obtained from the paint/wood interface region and four isolated from regions deep in the wood. The isolates were then used to inoculate liquid cultures containing ferulic acid, a lignin breakdown product, present as the sole carbon source. Ability of the isolates to use ferulate, judged by fungal yield, viable propagule count and absorbance at 280 nm (a measure of the aromatic's final concentration) was dependent on the site of isolation. Isolates from the paint/wood interface were consistently better at utilising ferulate than those isolated from deep in the wood and a possible reason for this is suggested.


Keywords: AUREOBASIDIUM; ISOLATES; BLUE STAIN; WINDOW FRAME; PAINT/WOOD INTERFACE; DEGRADATION; LIGNIN DEGRADATION; BREAKDOWN PRODUCTS

Conference: 96-05-19/24 Guadeloupe, France


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