Plurivorosphaerella nawae
Plurivorosphaerella nawae (Hiura & Ikata) O. Hassan & T. Chang, Pl. Dis. 103(2): 210 (2018).
≡ Mycosphaerella nawae Hiura & Ikata, Research Bulletin of the Faculty of Agriculture, Gifu University 5: 1 (1929).
Index Fungorum number: IF 825619; Facesoffungi number: FoF 11202, Fig. 1, 2
Description: see Hassan and Chang (2019).
Material examined: see Hassan and Chang (2019).
Fig. 1 Plurivorosphaerella nawae (sexual morph, redrawn from Fig. 5–7 in Lee et al. 2016). a Pseudothecium on diseased leaves. b Section through pseudothecium. c Ascus. d Ascospores. Scale bars: b, c = 10 µm, d = 5 µm.
Fig. 2 Plurivorosphaerella nawae (redrawn from Fig. 6 in Hassan and Chang, 2019). a, b Conidia type I, single and varying size and shape. c, d Conidia type II, constricted at the septa and swollen cells at the base. e Conidiophore and conidia type II from diseased substrate. f Germinating conidia. g Conidiogenous cell which give rise to the conidia. Scale bars: = 10 µm. For sexual morph characteristics of Plurivorosphaerella nawae see Fig. 5 in Hassan and Chang (2019).
Importance and distribution
Plurivorosphaerella comprises only one species known on leaves of Diospyros kaki (Ebenaceae) in Asia (Korea). The symptoms comprise circular leaf spot that become necrotic spots, with chlorosis, red discoloration, and early defoliation (Berbegal et al. 2013).
References
Kwon JH, Kang SW, Park CS, Kim HK. 1998 – Microscopic observation of the pseudothecial development of Mycosphaerella nawae on persimmon leaves infected by ascospore and conidia. Korean Journal of Plant Pathology 14, 408–412.
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