Table 1 Results of the two-way and three-way Mantel tests that show correlations (r) and partial correlations between the genetic distances among the pathogen populations versus the host population genetic distances and geographical distances among sites.

From: Co-evolution in a landrace meta-population: two closely related pathogens interacting with the same host can lead to different adaptive outcomes

Datasets and variables

Correlation (r)

P

Partial correlation

P

Explained variance (%)

All markers

 Ptt pathogen vs.

Barley host

0.586

0.0107

0.597

0.0084

25.8

 

Geography

0.700

0.0725

0.707

0.0592

41.4

Barley vs.

Geography

0.246

0.6134

   

 Ptm pathogen vs.

Barley host

−0.079

0.5770

−0.186

0.6381

1.59

 

Geography

0.200

0.3060

0.260

0.2162

5.75

Barley vs.

Geography

0.431

0.2556

   

Putatively neutral

 Ptt pathogen vs.

Barley host

0.584

0.0297

0.543

0.0570

25.3

 

Geography

0.644

0.0778

0.611

0.0756

33.3

Barley vs.

Geography

0.289

0.6301

   

 Ptm pathogen vs.

Barley host

0.258

0.3008

0.312

0.2082

9.31

 

Geography

−0.022

0.5439

−0.183

0.6267

0.05

Barley vs.

Geography

0.431

0.2501

   

Putatively under selection

 Ptt pathogen vs.

Barley host

0.414

0.0041

0.443

0.0028

14.7

 

Geography

0.603

0.0555

0.618

0.0555

34.7

Barley vs.

Geography

0.246

0.6230

   

 Ptm pathogen vs.

Barley host

−0.051

0.4681

−0.021

0.4333

0.10

 

Geography

−0.299

0.7171

−0.296

0.7173

8.90

Barley vs.

Geography

0.101

0.5703

   
  1. The significance of r was tested using 100,000 permutations. Bold, significant correlations. Data are presented for the Ptt and Ptm forms of the pathogen separately and using all of the SSAP markers and only the putatively neutral and putatively under divergence selection markers.
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