Colletotrichum acutatum

Wang, Qiu-Tong, Liu, Xiao-Ting, Ma, Hai-Ying, Shen, Xiao-Ye & Hou, Cheng-Lin, 2019, Colletotrichum yulongense sp. nov. and C. rhombiforme isolated as endophytes from Vaccinium dunalianum var. urophyllum in China, Phytotaxa 394 (4), pp. 285-298 : 290

publication ID

https://doi.org/ 10.11646/phytotaxa.394.4.6

persistent identifier

https://treatment.plazi.org/id/03AE6A28-AD3B-574A-FF31-FBC3FB52F9D9

treatment provided by

Felipe

scientific name

Colletotrichum acutatum
status

 

C. acutatum View in CoL species complex

For the 6-locus (ITS, GAPDH, CHS-1, HIS3, ACT, TUB2) phylogenetic analysis of the C. acutatum species complex, 38 reference sequences were downloaded from GenBank ( Table 1) and one isolate obtained from V. dunalianum var. urophyllum in this study. The multi-gene dataset (gene boundaries of ITS: 1−558, GAPDH: 559−811, CHS- 1: 812−1084, HIS3: 1085−1471, ACT: 1472−1697, TUB2: 1698−2187) comprised 2187 characters including the alignment gaps, of which 250 were parsimony-informative, 271 parsimony-uninformative and 1666 constant. The MP analysis of sequences resulted in one most parsimonious tree ( Fig. 1 View FIGURE 1 ) with a length (TL) of 886 steps, consistency index (CI) of 0.702, retention index (RI) of 0.844 and homoplasy index (HI) of 0.298. For the Bayesian analysis, MrModeltest 2.3 with the Akaike information criterion (AIC) was used to choose a substitution model for the two datasets. The model GRT+ I + G were chosen for the combined sequences. The analyses of the final MCMC chains were run from random trees for 1,000,000 generations and sampled every 100 generations. The tree generated from Bayesian analysis confirmed the tree topology obtained with parsimony. The phylogram constructed using combined dataset showed that V. dunalianum var. urophyllum isolate clustered into C. rhombiforme distinct clades with high bootstrap support (bootstrap support BS> 70 and Bayesian posterior probabilities PP> 0.95).

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