Fusicolla violacea Gräfenhan & Seifert, Stud. Mycol.

Kwon, Sun Lul, Cho, Minseo & Kim, Changmu Kim and Jae-Jin, 2024, First report of seven unrecorded bambusicolous fungi in Korea, Journal of Species Research 13 (2), pp. 111-126 : 117-118

Fusicolla violacea Gräfenhan & Seifert, Stud. Mycol.

68: 101(2011) ( Figs. 2 , 7 )

MycoBank. MB 519439

On PDA, colonies circular to irregular form, margin entire, mycelia brownish to brownish red, becoming partially purple after ten days. pigment absent in medium. Colony diameters (in mm after ten days in dark): 25℃, 3 mm diam. Mono- and poly-phialides, subulate to subcylindrical, hyaline, (18-)19-25 × 2.5-3.5 μm. Macroconidia mostly 3-septate, falcate to subfalcate, hyaline, smooth, thin-walled, (40-)45-55(-57) × (3.0-)3.5- 4.5(-5.0) μm. Chlamydospores not observed.

Distribution. Iran, China, and Republic of Korea.

Habitat. On Quadraspidiotus perniciosus on dying twig of Prunus domestica , Actinidia cinensis , and dead culm of Phyllostachys bambusoides .

Specimen examined. KOREA, Jeollanam-do, Damyang, Juknokwon , 35.3284N, 126.9855E, isolated from a dead culm of Phyllostachys bambusoides , 20 Dec 2021, Sun Lul Kwon, KUC21850 (= NIBRFGC000510469) .

Notes. The morphological information of Fc. violacea is poor in the original description( Gerlach, 1977). However, following the study of Zeng and Zhuang (2023), the purple pigment of Fc. violacea is the taxonomical key factor, and it was also found in our strain after 10 days of culture. Thus, our strain KUC21850 was identified as Fc. violacea by the cultural characteristics. The phylogeny and microscopic features (conidia size and shape) also supported the identification. A prior investigation has revealed that Fc. violacea J-1 possesses antifungal properties effective against Alternaria alternata , the pathogen responsible for causing soft rot disease in kiwifruit ( Li et al., 2021b). Consequently, this fungus exhibits potential as a viable biocontrol agent.

Figures

Fig. 2. Maximum Likelihood tree for genus Fusicolla with RPB2 dataset. Node numbers indicate bootstrap value above 70%. Blue colored name indicates the strains isolated in this study. Type strains are indicated by “T”.

Fig. 7. Morphology of Fusicolla violacea(KUC21850). (A) colony on PDA after five days; (B) colony on PDA after ten days; (C) conidia; (D) phialides. Scale bars: 10 μm (C, D).