Table 1 Evolution of presyngamic and postsyngamic reproductive compatibility with genetic distance in basidiomycetes

From: The tempo and modes of evolution of reproductive isolation in fungi

Model fitted

Sum of squares

Kruskall–Wallis

Runs test

e1, e2 or e3

a

Basidiomycetes (allopatric), plasmogamy initiation vs ITS divergence, N=47

 Snowball

316.6

0.465

0.008

−2934.7

 

 Linear

201.9

0.243

0.002

−127.7

 

 Slowdown

123.1

0.685

0.100

−6666.4

13040.2

Basidiomycetes (sympatric), plasmogamy initiation vs ITS divergence, N=57

 Snowball

622.8

2.10−4

9.10−7

−4405.7

 

 Linear

391.8

2.10−10

2.10−8

−176.9

 

 Slowdown

139.4

0.039

0.489

−2.1018

2.10 19

Microbotryum, conjugation of sporidia vs g-tubulin gene divergence, N=9

 Snowball

20.5

0.023

0.048

−679.6

 

 Linear

13.5

0.023

0.048

−42.7

 

 Slowdown

1.1

0.063

0.524

−1.10 17

2.10 18

Microbotryum, hyphal growth of F1 hybrids vs g-tubulin gene divergence, N=9

 Snowball

4.0

0.730

0.429

−590.7

 

 Linear

4.8

0.190

0.524

−31.6

 

 Slowdown

3.8

0.190

0.429

−13.9

−15.8

Microbotryum, F1 infection on Silene latifolia vs g-tubulin gene divergence, N=10

 Snowball

23.3

0.067

0.905

−987.6

 

 Linear

10.5

0.007

0.850

−64.7

 

 Slowdown

3.3

0.383

0.809

−1985.9

2836.0

Microbotryum, F1 infection on Silene dioicae vs g-tubulin gene divergence, N=10

 Snowball

41.8

0.200

0.400

−1146.6

 

 Linear

20.1

0.067

0.566

−76.2

 

 Slowdown

3.4

0.985

0.047

−8773.0

14095.8

Microbotryum, conjugation of F1 sporidia vs g-tubulin gene divergence, N=14

 Snowball

10.1

0.190

0.846

−530.4

 

 Linear

8.0

0.088

0.980

−29.6

 

 Slowdown

7.7

0.088

0.846

−45.5

27.4

Microbotryum, DNA content of F1 hybrid gametes vs g-tubulin gene divergence, N=14

 Snowball

7.1

0.898

0.078

−609.5

 

 Linear

4.3

0.852

0.452

−33.9

 

 Slowdown

4.0

0.852

0.452

−54.9

32.5

Microbotryum F2 infection on host plants vs g-tubulin gene divergence, N=15

 Snowball

22.1

0.448

0.259

−1147.1

 

 Linear

7.5

0.594

0.643

−64.6

 

 Slowdown

3.8

0.779

0.970

−170.7

110.4

  1. The first two data sets are measures of presyngamy between pairs of different species of basidiomycetes, whereas the last seven data sets are measures of presyngamy (conjugation of sporidia) and postsyngamy (all remaining data sets) within the microbotryum species complex, which belongs to basidiomycetes. For each data set, the retained model appears in bold (see main text for details on model selection, and Figures 3, 5 and 6 for the fits of these models to the data sets).
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