Highlights of the Didymellaceae - Studies in Mycology

AveSkAMp et al.
Fig. 2. (Continued).
have glabrous pycnidia and, like Ph. betae, aseptate conidia,
hence their link to Phoma section Phoma. Absence of an ostiole is
only recorded in Ph. glaucispora (De Gruyter et al. 1998).
Pleospora is linked to the anamorph genus Stemphylium
(Simmons 1969), Alternaria and Dendryphion (Von Arx 1981). The
pluriform nature of the Pleospora anamorphs strongly contrasts with
the relatively uniform morphology of the teleomorphic structures
(Holm 1962, Kodsueb et al. 2006, Inderbitzin et al. 2009). The
polyphyletic nature of Pleospora has been hypothesised by Holm
(1962) and Berbee (1996), but only recently have molecular studies
confirmed its taxonomic complexity (Dong et al. 1998, Kodsueb et
al. 2006, Inderbitzin et al. 2009).
20
0.62
-
0.98
83
1.00
56
0.94
83
0.98
78
1.00
66
0.90
52
1.00
100
1.00
99
Phoma section Phoma
Phoma section Heterospora
Phoma section Paraphoma
Phoma section Peyronellaea
Phoma section Phyllostictioides
Phoma section Sclerophomella
Phoma section Plenodomus
Phoma section Macrospora
Phoma section Pilosa
Unknown/ non-Phoma -species
CBS 172.34 ‘Dothiorella ulmi’
0.96
86
1.00
CBS 100167
CBS 101202
Boeremia exigua var. populi
96 CBS 101196
CBS 443.94
Boeremia exigua var. heteromorpha
CBS 119730 Boeremia exigua var. tarda
0.96
93
0.82
84
CBS 114.28
CBS 116.76
Boeremia exigua var. linicola
0.95
66
CBS 101211 Boeremia exigua var. viburni
CBS 100354 Boeremia exigua var. viburni
CBS 109183 Boeremia exigua var. coffeae
CBS 101207
CBS 101197
CBS 101213
CBS 431.74
CBS 101150
Boeremia exigua var. exigua,
Boeremia exigua var. pseudolilacis var. nov.,
Boeremia exigua var. forsythiae
0.91
73
0.97
98
CBS 126.93
CBS 261 261.92 92
Boeremia strasserii
0.67
-
0.58
-
1.00
-
0.93 CBS 109.79
100
Boeremia crinicola
CBS 118.93
CBS 569.79 Boeremia lilacis
0.98
1.00
100
CBS 100353
Boeremia noackiana
CBS 101203
0.65
- 0.90
99
74
0.98 CBS 101194
80
Boeremia diversispora
CBS 102.80
CBS 109175
CBS 760.73
Boeremia telephii
1.00
98
CBS 109170
CBS 629.68
Boeremia sambuci-nigrae
1.00
100 1.00
100
CBS 366.91
CBS 367 367.91 91
Boeremia hedericola
0.99
99
CBS 109176
CBS 341.67
1.00 CBS 378.67
100 CBS 109172
Boeremia foveata
Boeremia lycopersici
CBS 454.64 Didymella vitalbina
0.89
1.00
100
CBS 246.60
PD 77/1028 Epicoccum pimprinum
75
1.00
100
CBS 125.82
CBS 173.73
Epicoccum nigrum
1.00
100
CBS 179.80
CBS 627.68
Epicoccum sorghi
1.00
100
CBS 105.80
CBS 390.93
Phoma huancayensis
CBS 284.93
CBS 558.81
Phoma plurivora
CBS 104.80 Phoma henningsii
CBS 186.83 Phoma draconis
CBS 120105 Phoma brasiliensis sp. nov.
CBS 193.82 Phoma crystallifera
Group N: Boeremia
Group M: Epicoccum
Group L
Clade 8, Didymellaceae:
The major cluster observed in the generic phylogeny is the top
clade in Fig. 1, which represents the Didymellaceae clade. This
clade is well supported (BPP = 0.99, RBS = 94 %), but with the loci
used, a high level of basal polytomy is recorded within the clade.
The ancestral species in this clade are the Graminae-pathogens,
Ascochyta hordei and Ph. paspali. The latter species has been
considered to be an indigenous pathogen of grasses in Australia
and New Zealand (Johnston 1981, Boerema et al. 2004), but based
on sequence comparisons this species is probably also present in
Europe (Wirsel et al. 2001, C. Gueidan pers. comm.).
Clade 8 comprises most Phoma species, including CBS
615.75, the representative strain of Ph. herbarum (Boerema et al.