New physiologic race of Phytophthora megasperma f. sp. glycinea

  title={New physiologic race of Phytophthora megasperma f. sp. glycinea},
  author={A. Layton and K. L. Athow and F. Laviolette},
  journal={Plant Disease},
Discriminant haplotypes of avirulence genes of Phytophthora sojae lead to a molecular assay to predict phenotypes
A molecular assay that reveals the avirulence allele of the seven main Avr genes in order to diagnose with precision the pathotypes of P. sojae isolates and offers a powerful and reliable tool to exploit and study with greater precision soybean resistance against P.Sojae. Expand
Pathotypes and metalaxyl sensitivity of Phytophthora sojae and their distribution in Heilongjiang, China 2011–2015
The results of the present study suggest that incorporating Rps genes 1c, 1k, and 3a into soybean cultivars and the use of metalaxyl-coated seeds should provide integrated approach to manage Phytophthora root and stem rot of soybean in Heilongjiang, China. Expand
A new race of Phytophthora megasperma f.sp. glycinea on soybean in Australia
An isolate of Phytophthora megasperma f.sp. glycinea from soybean cv. Ridley growing near Forbes in the Lachlan Valley, New South Wales, was classified as race 4 after hypocotyl inoculation on aExpand
Comparison of Haro-isolines with traditional soybean race differentials to distinguish races of Phytophthora sojae
Use of the new set of differentials, based on Harosoy isolines, did not improve the overall race determination of eight selected field isolates of Phytophthora sojae, and computations using the traditional differential set generally gave a closer fit to a race. Expand
Changes in racial composition of Phytophthora sojae in Iran between 1998 and 2005
There was no variability in virulence of Phytophthora sojae between the areas surveyed and race identification was made possible by inoculating differential soybean cultivars and lines. Expand
Characterization of Phytophthora clandestina races on Trifolium subterraneum in Western Australia
A comprehensive set of subterranean clover cultivars was used as differentials to delineate a broader range of races of the pathogen, presenting a clearer picture of the racial distribution of P. clandestina among W.A. isolates. Expand
Virulence Composition of Phytophthora sojae in Michigan.
Knowing the virulence composition of Phytophthora sojae is important for the management of Phytophthora root and stem rot of soybean. Plant samples were collected in Michigan from diseased plants inExpand
A family of repeated DNA in the genome of the oomycete plant pathogen Phytophthora cryptogea
A family of repetitive sequences, called PCISs (Phytophthora Cryptogea Insertion Sequences), in the genome of Phytphthora cryptogea, which exhibit insertion polymorphism, as well as a very low sequence divergence. Expand
Changes in the Racial Composition of Phytophthora sojae in Australia Between 1979 and 1996.
Only races 1 and 15 have been found in the northern soybean-growing regions, with the latter dominating, which coincides with the widespread use of cultivars with the Rps2 gene. Expand
A Greenhouse Technique for Assessing Phytophthora Root Rot Resistance in Glycine max and G. soja.
The results suggest that the plug-inoculation method can be used as an alternative to the hypocotyl-inOCulation method and potential sources of new P. sojae resistance and/or tolerance may be present in G. max. Expand