Phyllosticta musaechinensis S.P. Wu, Z.Y. Liu & K.D. Hyde, 2014

Wu, Shi-Ping, Liu, Yong-Xiang, Yuan, Jie, Wang, Yong, Hyde, Kevin D. & Liu, Zuo-Yi, 2014, Phyllosticta species from banana (Musa sp.) in Chongqing and Guizhou Provinces, China, Phytotaxa 188 (3), pp. 135-144 : 142

Phyllosticta musaechinensis S.P. Wu, Z.Y. Liu & K.D. Hyde , sp. nov. ( Fig 3 ) MycoBank MB 806057.

Phyllosticta musaechinensis is weakly pathogenic on leaves of Musa sp. It grows slowly on PDA. Sexual and spermatial states were not observed.

Type: — CHINA. Chongqing Municipality: Yubei District, Longtou Temple Park , on leaves of Musa sp. , 21 September 2012, Shiping Wu, (CQ12097, holotype); ex-type living culture = GZAAS6.1247 = MFLUCC13-0907 = ICMP 20111 ).

Etymology:— From Musa , the host and chinensis, in reference to the first collection of the species on a banana host in China.

Weakly pathogenic on leaves of Musa sp. , slightly discoloring leaves yellow, with black, shiny conidiomata forming on healthy green, or yellowing parts of leaves. Sexual state: Unknown. Asexual state: Pycnidia 45–145 µm (= 93 µm) diam. subcuticular to erumpent, solitary or clustered in small groups, black, shiny, globose or subglobose, with a rounded ostiole at the center. Conidiogenous cells cylindrical or conical. Conidia 14–18 × 8–12 µm (= 17 × 10 µm), hyaline, aseptate, coarsely guttulate, ellipsoidal or clavate, thin- and smooth-walled, surrounded by a mucilaginous sheath 0.5–3.5 µm thick, apex tapering, straight to curved, appendage 4.0–18.5 µm (= 12 µm) long. Spermatial state: unknown.

Colony on PDA bluish black to black, without aerial mycelium, irregular, raised to about 0.7 mm, reaching 14.2– 12.5 mm diam after 60 d at 28°C. Pycnidiasolitary or aggregated in colony, black. Conidia 15.5–22.5 × 8.5–13 µm (= 18 × 11 µm), hyaline, aseptate, coarsely guttulate, ellipsoidal, clavate or irregular, thin- and smooth-walled, surrounded by a mucilaginous sheath or not, apex tapering, straight to curved 4–18 µm (= 11.6 µm). Spermatia not formed.

Known distribution:— China.

Host:— Musa sp.

Additional material examined:— CHINA. Chongqing Municipality: Yubei District, Longtou Temple Park , on leaves of Musa sp. , 3 August 2013, Shiping Wu ( CQ13018 ); living culture = GZAAS6.1384 .

Figures

FIGURE 3.Phyllosticta musaechinensis (CQ12097, holotype).a. Symptom of disease. b. Pycnidia on infected leaf of Musa sp. c, d. Ostiole of pycnidium. e. Pycnidium and conidiogenous cell. f–h. Conidia.i. Conidia on colony. j. Conidiogenous cell in culture. k. Conidia from culture. l–n. Culture on PDA. Scale bars: e = 50µm, f–h, j, k = 20 µm, n = 5 mm.