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Table 1 Summary of phenotypic conversion upon passage experiments

From: Host-induced aneuploidy and phenotypic diversification in the Sudden Oak Death pathogen Phytophthora ramorum

Inoculated host, year # Trees (# Leaves)a Inoculum; duration in host Phenotypesf Total
wt nwt
Petri plate control n/a Pr-710, Pr-745, Pr-1556, Pr-1557, ND886 (wt, foliar hosts)b ; n/a 348 0 348
n/a Pr-102 (nwt, oak)c ; n/a 71 29 100
Canyon live oak, 2010 8 Pr-710 and Pr-745 (wt, bay); 20 weeks 37 25 62
10 Pr-710 and Pr-745 (wt, bay); 40 weeks 23 35 58
Shreve oak, 2010 2 Pr-710 and Pr-745 (wt, bay); 20 weeks 6 2 8
Canyon live oak, 2012 4 Pr-1556 and Pr-1557 (wt, bay); 20 weeks 27d 0 27
California bay, 2012 1 (9) Pr-745 (wt, bay); 20 weeks 9 0 9
California bay, 2013 3 (27) ND886 (wt, camellia); 4 to 25 weekse 20 0 20
3 (27) Pr-102 (nwt, oak); 4 to 25 weekse 16 2 18
  1. aThe total number of trees and the total number of leaves re-isolation were attempted. The pathogen was inoculated on oak stems or California bay leaves
  2. bcolony morphology of five wt isolates grown on Petri plates was scored. 24, 24, 100, 100 and 100 replicates were made for Pr-710, Pr-745, Pr-1556, Pr-1557, and ND886, respectively
  3. cPr-102 displaying wt colony morphology was used as inoculum. The 71 subcultures showing wt morphology were expected to display nwt colony morphology at a certain percentage upon subsequent subculturing
  4. dMost of the tested wt isolates displayed nwt after passage through race tubes
  5. ere-isolation was made 4, 12 and 25 weeks post-inoculation
  6. fCriteria for scoring of wt/nwt are described in Evaluation of colony morphology in Methods