Roussoella doimaesalongensis Thambug. & K.D. Hyde, Mycosphere 8 (4): 782 (2017)

Hu, Hongmin, He, Minghui, Wu, Youpeng, Long, Sihan, Zhang, Xu, Liu, Lili, Shen, Xiangchun, Wijayawardene, Nalin N., Meng, Zebin, Long, Qingde, Kang, Jichuan & Li, Qirui, 2023, Taxonomic and phylogenetic characterisations of six species of Pleosporales (in Didymosphaeriaceae, Roussoellaceae and Nigrogranaceae) from China, MycoKeys 100, pp. 123-151 : 123

Roussoella doimaesalongensis Thambug. & K.D. Hyde, Mycosphere 8 (4): 782 (2017)

Fig. 7

Descriptions.

See Thambugala et al. (2017).

Specimen examined.

China, Guizhou Province, Huaxi District, Shilihetan Wetland Park (26°23'23.4"N, 106°67'56.4"E), 1511 m elev., on dead bamboo branches, 8 October 2022, Y.P Wu and H.M Hu, 2022SLHT14 (GMB0497; GMBC0497, living culture).

Notes.

In our phylogram (Fig. 2 ), the sequence of our collection clustered with Roussoella doimaesalongensis with robust support (100% ML, 1 BYPP). Roussoella doimaesalongensis was originally found on decaying bamboo culms in Thailand ( Thambugala et al. 2017). Morphologically, our specimens match the description provided by Thambugala et al. (2017) and this species was first reported in China by Seong et al. (2022).

Figures

Figure 2. RAxML phylogram of Roussoellaceae, based on a combined dataset of partial ITS, LSU, tef 1 and rpb 2 DNA sequences. The tree is rooted by Torula hollandica (CBS 220.69) and T. herbarum (CBS 111855). Bootstrap supports ML (MLB ≥ 75 %) and Bayesian posterior probabilities (BYPP ≥ 0.95) are given as MLB / BYPP above the branches. Sequences from newly-generated isolates are in red, bold letters, while those of ex-type isolates are shown in black, bold letters.

Figure 7. Roussoella doimaesalongensis (GMB 0497) A specimen B appearance of ascomata on substrate C cross-section of ascostromata D longitudinal section of an ascoma E peridium F pseudoparaphyses G-I asci J-M ascospores. Scale bars: 0.5 mm (B-C); 10 μm (D-M).