Kwon Jin-Hyeuk, Hong Seung-Beom
Gyeongsangnam-do Agricultural Research and Extension Services, Jinju 660-360, Korea.
Mycobiology. 2005 Dec;33(4):240-2. doi: 10.4489/MYCO.2005.33.4.240. Epub 2005 Dec 31.
A soft rot of fruits caused by Mucor racemosus occurred on cherry tomato collected in Agricultural Products Wholesale Market in Jinju, Korea. The disease infection usually occurred wounded areas after cracking of fruits. At first, the lesions started with water soaked and rapidly softened and diseased lesion gradually expanded. Colonies were white to brownish to gray in color. Sporangia were 3254 µm in size and globose in shape. Sporangiophores were 814 µm in width. Sporangiospores were 512 × 48 µm in size, ellipsoidal to subglobose in shape. Columella was 27~42 µm in size, obovoid, ellipsoidal, cylindrical-ellipsoidal, slightly pyriform in shape. Chlamydospores were numerous in sporangiophores and barrelshaped when young, subglobose in old cultures. Optimum growth temperature was about 25℃. The fungus was identified as M. racemosus Fres. This is the first report of soft rot on cherry tomato caused by M. racemosus in Korea.
在韩国晋州农产品批发市场采集的樱桃番茄上发生了由总状毛霉引起的果实软腐病。病害感染通常发生在果实开裂后的伤口处。起初，病斑以水渍状开始，迅速软化，患病病斑逐渐扩大。菌落颜色从白色到褐色再到灰色。孢子囊大小为3254 µm，呈球形。孢囊梗宽度为814 µm。孢囊孢子大小为512×48 µm，呈椭圆形至近球形。囊轴大小为27~42 µm，呈倒卵形、椭圆形、圆柱状椭圆形，形状略呈梨形。厚垣孢子在孢囊梗中大量存在，年轻时呈桶形，在老龄培养物中呈近球形。最适生长温度约为25℃。该真菌被鉴定为总状毛霉Fres。这是韩国首次报道由总状毛霉引起的樱桃番茄软腐病。
