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Small Grains Viral Disease Laboratory
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Research Project: POPULATION DYNAMICS AND DISEASE MANAGEMENT OF SOYBEAN ROOT PATHOGENS

Location: Crop Production and Pest Control Research

Title: Genetic mapping and characterization of two novel Phytophthora resistance genes from soybean landrace PI567139B

Authors
item Lin, Feng -
item Johnson, Austin -
item Ping, Jieqing -
item Zhao, Meixia -
item Abney, Scott -
item Hughes, Teresa
item Ma, Jianxin -

Submitted to: Midwest Soybean Conference Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: August 12, 2012
Publication Date: N/A

Interpretive Summary: Phytophthora root and stem rot (PRR) disease, caused by P. sojae, is a widespread soybean disease resulting in an annual yield loss of $1~2 billion worldwide. To control the disease, breeders primarily employ race-specific resistant genes which are named Rps genes which have been identified to be located at 8 loci with 14 dominant alleles. However, soybean breeders are continuously facing big challenges due to the scarcity of excellent resistant genes and lack of efficient molecular markers for Marker Assisted Selection (MAS). Recently a soybean landrace PI567139B has been identified to confer excellent resistance to all major P.sojae races in Indiana soybean field and could provide potentially new resources of Rps genes. Genetic analysis revealed two dominant resistance genes and the resistance spectrum of each gene was characterized. Our results suggested that both of them were novel Rps genes.

Technical Abstract: Phytophthora root and stem rot (PRR) disease, caused by P. sojae, is a widespread soybean disease resulting in an annual yield loss of $1~2 billion worldwide. To control the disease, breeders primarily employ race-specific resistant genes which are named Rps genes which have been identified to be located at 8 loci with 14 dominant alleles. However, soybean breeders are continuously facing big challenges due to the scarcity of excellent resistant genes and lack of efficient molecular markers for Marker Assisted Selection (MAS). Recently a soybean landrace PI567139B has been identified to confer excellent resistance to all major P.sojae races in Indiana soybean field and could provide potentially new resources of Rps genes. Genetic analysis revealed two dominant resistance genes and the resistance spectrum of each gene was characterized. Our results suggested that both of them were novel Rps genes.

   

 
Project Team
Hughes, Teresa - Terri
 
Publications
   Publications
 
Related National Programs
  Plant Genetic Resources, Genomics and Genetic Improvement (301)
  Plant Diseases (303)
 
Related Projects
   IDENTIFYING RESISTANCE TO CHARCOAL ROT AND UNDERSTANDING THE ROLE OF PATHOGEN VARIABILITY IN DISEASE DEVELOPMENT IN THE NORTH CENTRAL US
   CHARCOAL ROT DISEASE DEVELOPMENT AND ITS IMPACT ON SOYBEAN YIELD IN THE NORTH CENTRAL U.S.
   CHARCOAL ROT DISEASE DEVELOPMENT AND ITS IMPACT ON SOYBEAN YIELD IN THE NORTH CENTRAL U.S.
   Charcoal Rot Disease Development and its Impact on Soybean Yield in the North Central U.S.
   Charcoal Rot Disease Development and its Impact on Soybean Yield in the North Central U.S.
 
 
Last Modified: 05/24/2013
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