Fusarium bambusarum M.M. Wang & L. Cai

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 : 115-116

Fusarium bambusarum M.M. Wang & L. Cai ,

Persoonia 48: 25(2022) ( Figs. 1 , 6 )

MycoBank. MB 842152

On PDA, colonies circular form, margin erose to entire, aerial mycelia dense, mycelia white, pigment absent in medium. On OA, colonies circular form, margin entire, aerial mycelia dense, mycelia white, pigment absent in medium. On SNA, colonies circular form, margin erose to entire, aerial mycelia scant, mycelia white, pigment absent in medium. Conidiophores borne on aerial mycelia, branched, hyaline, thin-walled, bearing terminal a group of 2-5 phialides. Phialides subulate to subcylindrical, hyaline, (11-)13-21(-26) × 2.5-3.0(-4.0) μm. Microconidia oval, hyaline, thin-walled, aseptate, (6.0-)8.0- 11.0(-13.5) × (1.8-)2.0-3.0(-3.5) μm. Macroconidia not observed. Chlamydospores terminal, globose, rough, thick-walled, 6.0-8.0 μm diam.

Distribution. China; and Republic of Korea.

Habitat. bamboo, culm of unidentified bamboo and Phyllostachys pubescens .

Specimen examined. KOREA, Jeollabuk-do, Gochang, Gochangeupseong , 35.4303N, 126.7031E, isolated from a culm of Phyllostachys pubescens , 18 Mar 2021, Sun Lul Kwon, KUC21851 (= NIBRFGC000510466) ; KOREA, Jeollanam-do, Gwangju , Mudeungsan National Park , 35.1267N, 126.9685E, isolated from a culm of bamboo, 23 Sep 2020, Sun Lul Kwon, KUC21852 (= NIBRFGC 000510467) ; KOREA, Jeollanam-do, Gwangju , Mudeungsan National Park , 35.1267N, 126.9685E, isolated from a culm of bamboo, 23 Sep 2020, Sun Lul Kwon, KUC21853 (= NIBRFGC000510468) .

Notes. The size of the aerial phialides of F. bambusarum KUC 21851 (13-21 μm long) is shorter than that of F. bambusarum LC 7180 (ex-type) (23-30 μm long) ( Wang et al., 2022a). However, other morphological features and habitats are comparable (both strains are found from bamboo species).

Figures

Fig. 1. Maximum Likelihood tree for genus Fusarium with TEF-1α+RPB2 combined dataset. Node numbers indicate bootstrap value above 70%. Blue colored names indicate the strains isolated in this study. Type strains are indicated by “T”.

Fig. 6. Morphology of Fusarium bambusarum (KUC21851). (A) colony on PDA; (B) colony on OA; (C) colony on SNA; (D) conidiophore bearing phialides; (E) chlamydospores; (F) microspores. Scale bars: 10μm (D-F).