Inheritance and mapping of 11 avirulence genes in Phytophthora sojae
Article
Article Title | Inheritance and mapping of 11 avirulence genes in Phytophthora sojae |
---|---|
ERA Journal ID | 2592 |
Article Category | Article |
Authors | May, K.J., Whisson, S.C., Zwart R.S., Searle, I.R., Irwin, J.A.G., Maclean, D.J., Carroll, B.J. and Drenth, A. |
Journal Title | Fungal Genetics and Biology |
Journal Citation | 37 (1), pp. 1-12 |
Number of Pages | 12 |
Year | 2002 |
ISSN | 0147-5975 |
1087-1845 | |
1096-0937 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/S1087-1845(02)00027-0 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S1087184502000270 |
Abstract | Two new crosses involving four races (races 7, 16, 17, and 25) of the soybean root and stem rot pathogen Phytophthora sojae were established (7/16 cross; 17/25 cross). An F2 population derived from each cross was used to determine the genetic basis of avirulence towards 11 different resistance genes in soybean. Avirulence was found to be dominant and determined by a single locus for Avr1b, 1d, 1k, 3b, 4, and 6, as expected for a simple gene-for-gene model. We also observed several cases of segregation, inconsistent with a single dominant gene being solely responsible for avirulence, which suggests that the genetic background of the different crosses can affect avirulence. Avr4 and 6 cosegregated in both the 7/16 and 17/25 crosses and, in the 7/16 cross, Avr1b and 1k were closely linked. Information from segregating RAPD, RFLP, and AFLP markers screened on F2 progeny from the two new crosses and two crosses described previously (a total of 212 F2 individuals, 53 from each cross) were used to construct an integrated genetic linkage map of P. sojae. This revised genetic linkage map consists of 386 markers comprising 35 RFLP, 236 RAPD, and 105 AFLP markers, as well as 10 avirulence genes. The map is composed of 21 major linkage groups and seven minor linkage groups covering a total map distance of 1640.4 cM. © 2002 Elsevier Science (USA). All rights reserved. |
Keywords | AFLP; Gene-for-gene; Genetic linkage mapping; Genetics; Oomycetes; Phytophthora megasperma f. sp. glycinea; RAPD; RFLP; Virulence |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 300409. Crop and pasture protection (incl. pests, diseases and weeds) |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Funder | Australian Research Council |
Byline Affiliations | University of Queensland |
North Carolina State University, United States | |
Scottish Crop Research Institute, United Kingdom | |
Leslie Research Centre, Australia |
https://research.usq.edu.au/item/yy406/inheritance-and-mapping-of-11-avirulence-genes-in-phytophthora-sojae
36
total views0
total downloads4
views this month0
downloads this month