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ARS Home » Midwest Area » Urbana, Illinois » Soybean/maize Germplasm, Pathology, and Genetics Research » Research » Publications at this Location » Publication #213877
Title: Soybean cyst nematode populations suppressed by Pasteuria nishizawae

Author
item Noel, Gregory
item ATIBALENTJA, N - UNIV OF ILLINOIS
item BAUER, S - UNIV OF ILLINOIS

Submitted to: Journal of Nematology
Publication Type: Abstract Only
Publication Acceptance Date: 7/29/2007
Publication Date: 8/1/2007
Citation: Noel, G.R., Atibalentja, N., Bauer, S. Soybean cyst nematode populations suppressed by Pasteuria nishizawae. Journal of Nematology.39(11):82-82 Mar 2007

Interpretive Summary:

Technical Abstract: Pasteuria nishizawae is a mycelial and endospore forming, obligately parasitic bacterium of Heterodera glycines. The effectiveness of P. nishizawae in controlling H .glycines was investigated in an ongoing tillage and genetic resistance study by adding P. nishizawae infested soil to three of six replications in 1999. Soybean yield, and Pi and Pf of H. glycines were determined during 1999 – 2005. Yield of the resistant cultivar was greater than the susceptible cultivar in 1999 – 2004, in contrast with 2005 when yield of the susceptible cultivar was greater. Differences in yield were associated with P. nishizawae infestation and interactions with tillage in 1999 –2001. Pi was affected by P. nishizawae in 2001 – 2005 and Pf was affected in 2000 – 2005. In 2005, a dramatic decline in Pf occurred on the susceptible cultivar, which was associated with higher yield when compared with the resistant cultivar. In this study, P. nishizawae was successfully transferred to a field experiment and became suppressive to H. glycines, resulting in an increase in soybean yield.