Effect of Crop Rotation on the Survival of Phytophthora capsici in Michigan

Plant Disease
K H Lamour, M K Hausbeck

Abstract

Phytophthora capsici is a limiting factor for some vegetable producers in Michigan despite crop rotation and fungicide applications. Our objective was to assess the effect of crop rotation on the survival of P. capsici at a naturally infested site in Michigan planted to cucumbers in 1998, corn in 1999 and 2000, and tomatoes in 2001. Isolates were characterized for compatibility type (CT), mefenoxam sensitivity, and amplified fragment length polymorphism (AFLP) marker profiles, and compared with isolates recovered from other locations in Michigan during the same time period. The A1:A2 CT ratio was 1:1, and approximately 60% of the isolates recovered in both years were intermediately sensitive or insensitive to mefenoxam. The majority of the isolates (89%) had unique AFLP fingerprints, and no members of the same clonal lineage were recovered among years. Isolates from this location were more similar to each other than to isolates from other locations in Michigan, and it was not possible to distinguish isolates based on the year of isolation. Genetic similarity analyses indicate that isolates from this location are part of a genetically distinct outcrossing population. These data indicate that P. capsici persisted as oospores for ...Continue Reading

Citations

Oct 22, 2011·Molecular Plant Pathology·Kurt H LamourEdgar Huitema
Dec 1, 2004·Plant Disease·Mary K Hausbeck, Kurt H Lamour
Oct 24, 2008·Phytopathology·O Hurtado-GonzálesK Lamour
May 15, 2010·Phytopathology·L M Quesada-Ocampo, M K Hausbeck
Apr 14, 2011·Phytopathology·L M Quesada-OcampoM K Hausbeck
Nov 1, 2012·Plant Disease·Leah L GrankeMary K Hausbeck
Aug 16, 2018·Plant Disease·Catalina Salgado-SalazarJo Anne Crouch
Nov 1, 2013·Plant Disease·M Babadoost, C Pavon
Mar 30, 2017·Frontiers in Genetics·Maryn O CarlsonChristine D Smart
Feb 1, 2009·Plant Disease·L M Quesada-OcampoM K Hausbeck
Jan 30, 2021·Frontiers in Plant Science·Luz Maria Serrano-JamaicaGabriela Medina-Ramos

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