Didymella sinensis (Q. Chen) Q. Chen et al.

Wang, Yuchun, Tu, Yiyi, Chen, Xueling, Jiang, Hong, Ren, Hengze, Lu, Qinhua, Wei, Chaoling & Lv, Wuyun, 2024, Didymellaceae species associated with tea plant (Camellia sinensis) in China, MycoKeys 105, pp. 217-251 : 217-251

Didymella sinensis (Q. Chen) Q. Chen et al. , Studies in Mycology. 87: 138. 2017

Description.

see Chen et al. (2017).

Materials examined.

China, Yunnan Province, Puer City, Jingdong Yizu Autonomous County, from healthy leaves of C. sinensis , 13 Jun 2020, Y. C. Wang, culture YCW 2118 .

Notes.

Didymella sinensis is closely related to D. pomorum . It can be observed from different host plants in a wide range, such as Cerasus pseudocerasus ( Rosaceae ), Dendrobium officinale ( Orchidaceae ) and Urticaceae . The sexual morph was characterised by ascomata aggregated, globose to irregular, brown, small and papillate. Asci were bitunicate, clavate to short cylindrical; Ascospores were biseriate, ellipsoidal, straight to slightly curved, hyaline, apex obtuse, medianly 1 - septate ( Chen et al. 2017). In the present study, eight isolates from healthy tea plant leaves phylogenetically grouped with D. sinensis with high statistical support (Fig. 2 ). This is the first report of D. sinensis isolated from C. sinensis .

Figures

Figure 2. Phylogenetic tree generated by Maximum Likelihood analysis, based on the combined ITS, LSU, RPB 2 and TUB 2 dataset of Didymella species. Bootstrap support values above 50 % and Bayesian posterior values above 0.75 are shown at each node (ML / PP). Pleiochaeta setosa CBS 118.25 / CBS 496.63 and Coniothyrium palmarum CBS 400.71 are used as outgroups. Ex-type strains are emphasised in bold.