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Science 10 June 1983:
Vol. 220. no. 4602, pp. 1161 - 1163
DOI: 10.1126/science.220.4602.1161
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Articles

Acquisition of Digestive Enzymes by Siricid Woodwasps from Their Fungal Symbiont

JEROME J. KUKOR 1 and MICHAEL M. MARTIN 1

1 Division of Biological Sciences, University of Michigan, Ann Arbor 48109

Larvae of the woodwasp, Sirex cyaneus, contain midgut digestive enzymes that enable them to utilize the major fungal and plant polysaccharides found in their food. At least two classes of enzymes, the Ckhgr-cellulases and the xylanases, are not produced by the larvae. Instead, larvae acquire these enzymes while ingesting tissue of Amylostereum chailletii, the fungal symbiont that occurs in the wood on which the larvae feed.

Submitted on November 8, 1982
Revised on February 4, 1983

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Science. ISSN 0036-8075 (print), 1095-9203 (online)