Journal of Nematology (2006) 38, p. 261 (Bekal et al.)

S. Bekal, T.L. Niblack, M.E. Hudson, L.L. Domier and K.N. Lambert (2006)
A genetic approach to understanding Heterodera glycines virulence
Journal of Nematology 38 (2), 261-261
Abstracts of Society of Nematologists 45th Annual Meeting, Lihue, Hawaii, 18-21 June 2006
Abstract: Heterodera glycines, the soybean cyst nematode (SCN), is the most devastating pathogen of soybean in the USA. SCN is a very diverse and adaptable nematode capable of reproducing on what would normally be considered SCN resistant soybean. This phenomenon is also known as resistance breaking and such nematodes are referred to as virulent. The build up of virulent SCN populations is an ever-growing threat to soybean production since it renders the major method of SCN control, nematode resistant plants, ineffective. If the underlying genetics of SCN virulence could be understood, then virulent SCN populations could be monitored and crop rotation strategies could be devised to prevent the spread and accumulation of virulent SCN. To this end, we have initiated a project to map-base clone a recessive SCN virulence gene that allows the nematode to grow on the resistant, soybean cultivar Hartwig. In this project we are identifying DNA sequence polymorphisms between virulent and avirulent inbred SCN biotypes. These polymorphisms are being converted into molecular markers, which in turn are being mapped to generate a high resolution SCN genetic linkage map and to find markers linked to the SCN virulence loci. Some of our molecular markers are being generated from bacterial artificial chromosome end sequences, thus this project will also facilitate the ultimate integration of our SCN genetic map to a future SCN physical map.
Database assignments for author(s): Leslie L. Domier, Kris N. Lambert, Terry L. Niblack

Research topic(s) for pests/diseases/weeds:
molecular biology - genes
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Heterodera glycines