<?xml version='1.0' encoding='UTF-8'?><xml><records><record><source-app name="HighWire" version="7.x">Drupal-HighWire</source-app><ref-type name="Journal Article">17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Van Sluyter, Steven</style></author><author><style face="normal" font="default" size="100%">Durako, Michael J.</style></author><author><style face="normal" font="default" size="100%">Halkides, Christopher J.</style></author></authors><secondary-authors></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Comparison of Grape Chitinase Activities in Chardonnay and Cabernet Sauvignon with &lt;em&gt;Vitis rotundifolia&lt;/em&gt; cv. Fry</style></title><secondary-title><style face="normal" font="default" size="100%">American Journal of Enology and Viticulture</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2005-03-01 00:00:00</style></date></pub-dates></dates><pages><style  face="normal" font="default" size="100%">81-85</style></pages><doi><style  face="normal" font="default" size="100%">10.5344/ajev.2005.56.1.81</style></doi><volume><style face="normal" font="default" size="100%">56</style></volume><issue><style face="normal" font="default" size="100%">1</style></issue><abstract><style  face="normal" font="default" size="100%">Fungal resistance in Euvitis is generally correlated with levels of pathogenesis-related proteins such as chitinase. Vitis rotundifolia is resistant to many pathogens that affect Vitis vinifera; therefore, grape chitinase activities were compared in V. rotundifolia cv. Fry and V. vinifera cvs. Cabernet Sauvignon and Chardonnay. Cabernet Sauvignon and Chardonnay chitinase activities were approximately 130-fold and 80-fold higher than Fry activities, respectively. Thus, the high pathogen resistance of Fry may be a result of factors other than chitinase. By sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), Fry berries had two chitinase isoforms, and at least one was not found in the V. vinifera berries. Cabernet Sauvignon and Chardonnay had four and five chitinase isoforms, respectively.</style></abstract></record></records></xml>