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United States Department of Agriculture

Agricultural Research Service

Research Project: Genetic Characterization, Taxonomy, and Acquisition of Genetic Resources for Carrot, Potato, and Their Related Wild Species

Location: Vegetable Crops Research Unit

Title: Characterization of resistance to Globodera rostochiensis pathotype Ro1 in cultivated and wild potato accessions from the collection of the Vavilov Institute of Plant Industry (VIR)

item Limantseva, L -
item Mironenko, N -
item Shuvalov, O -
item Khiutti, A -
item Afanasenko, O -
item Antonova, O -
item Novikova, L -
item Spooner, David
item Gavrilenko, T -

Submitted to: Plant Breeding
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: May 2, 2014
Publication Date: N/A

Interpretive Summary: Potato cyst nematodes are microscopic work like organisms that live in the soil and can infect the roots of potato plants. They can greatly reduce the yield of potato plants and are a big problem in some areas. This study is part of a long-term collaboration between the US Government and the Government of Russia regarding potato breeding and genetics. It investigates the occurrence and type (species) of potato cyst nematodes in Russia using how the cyst nematodes appear (morphology), how they infect different potato plants that have different infection reactions to different species, and using molecular markers. Our results show the species of potato cyst nematodes in the St. Petersburg Region of Russia, technically referred to as Globodera rostochiensis. It also shows wild potato species that have resistance to these nematodes. The wild species showing resistance are particularly useful to help potato breeders combat this disease through hybridizations between wild and cultivated potato species.

Technical Abstract: Potato cyst nematodes (PCN) in Russia are represented by only Globodera rostochiensis pathotype Ro1. It is a quarantine pathogen with losses in yield in susceptible cultivars which can reach 50-90%. The aims of our study were to verify the species and pathotype composition of natural PCN populations in the North West Region of Russia, to search for new sources of resistance to G. rostochiensis pathotype Ro1 among cultivated potato species and their wild relatives, to characterize intra-and interspecific variation of nematode resistance to investigate possible associations between this trait and taxonomy, geographical origin, and molecular markers useful for the detection of resistant potato genotypes.

Last Modified: 11/25/2014
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