Diaporthe betulina C.M. Tian & Q. Yang, Mycokeys 39: 97 (2018)

Zhu, Haiyan, Pan, Meng, Bonthond, Guido, Tian, Chengming & Fan, Xinlei, 2019, Diaporthalean fungi associated with canker and dieback of trees from Mount Dongling in Beijing, China, MycoKeys 59, pp. 67-94 : 67

Diaporthe betulina C.M. Tian & Q. Yang, Mycokeys 39: 97 (2018)

Description.

See Yang et al. (2018).

Material examined.

CHINA, Beijing City, Mentougou District, Mount Dongling, Xiaolongmen Forestry Centre (39°59'23.58"N, 115°27'05.00"E), from branches of Betula dahurica Pall., 17 Aug. 2017, H.Y. Zhu & X.L. Fan, deposited by X.L. Fan, CF 2019831, living culture CFCC 53144.

Notes.

Yang et al. (2018) described Diaporthe betulina from cankers of Betula spp. in Heilongjiang Province. The only strain CFCC 53144 representing D. betulina clusters in a well-supported clade and appear most closely related to D. betulae , which was also isolated from Betula platyphylla in Sichuan Province ( Du et al. 2016). Diaporthe betulina (strain CFCC 52562) differs from D. betulae by its slender alpha conidia (2.5-3 vs. 3-4 μm) ( Du et al. 2016), and 13 bp for ITS, 7 bp for cal, 19 bp for his, 12 bp for tef and 6 bp for tub2 based on alignment of the concatenated five-gene deposited in TreeBASE (S24893). Both morphology and sequence data confirmed that our isolates belong to this species.