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PLANT PHYSIOLOGY , Vol 102, Issue 2 645-650, Copyright © 1993 by American Society of Plant Biologists

PLANT-MICROBE INTERACTIONS

A Novel Fungal Protease Expressed in Endophytic Infection of Poa Species

J. T. Lindstrom, S. Sun and F. C. Belanger
Plant Science Department, Rutgers University, New Brunswick, New Jersey 08903

The fungus Acremonium typhinum produces a novel endoprotease during symbiotic endophytic infection of the grass, Poa ampla. This protease is unusual because it is highly active in the presence of sodium dodecyl sulfate. The enzyme is a thiol-containing serine protease and is localized to a crude membrane fraction. Similar protease activity has been detected in endophyte-infected Poa autumnalis and Poa sylvestris plants. Expression of this protease may be important in endophytic infection of Poa spp., because similar activity has not been detected in endophyte-infected Festuca arundinacea or Lolium perenne.


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M. Moy, H. M. Li, R. Sullivan, J. F. White Jr., and F. C. Belanger
Endophytic Fungal beta -1,6-Glucanase Expression in the Infected Host Grass
Plant Physiology, November 1, 2002; 130(3): 1298 - 1308.
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Copyright © 1993 by the American Society of Plant Biologists