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This is a multi-part message in MIME format. --Boundary_(ID_S+NrksV2BCYfZgBFTAqFSA) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7BIT Here's a question for the plant biologists: A dead tree soon develops a garden of various kinds of fungi on its bark. This doesn't happen to living trees, as far as I know (although lichens, liverworts etc. do attach to them). The outer surface of the bark of a tree appears to be made up of dead tissue. How is the tree able to fight off infection by external fungi when it is more or less surrounded by dead material? Is it perhaps a matter of attacking the fungal "roots" when they penetrate the park to the living tissue? Peter Payzant --Boundary_(ID_S+NrksV2BCYfZgBFTAqFSA) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: 7BIT <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <META content="MSHTML 6.00.2900.3020" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>Here's a question for the plant biologists: A dead tree soon develops a garden of various kinds of fungi on its bark. This doesn't happen to living trees, as far as I know (although lichens, liverworts etc. do attach to them).</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>The outer surface of the bark of a tree appears to be made up of dead tissue. How is the tree able to fight off infection by external fungi when it is more or less surrounded by dead material? Is it perhaps a matter of attacking the fungal "roots" when they penetrate the park to the living tissue?</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Peter Payzant</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2></FONT> </DIV></BODY></HTML> --Boundary_(ID_S+NrksV2BCYfZgBFTAqFSA)--
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