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 Add this item to the list   Septoria rubi Westend.
   
Literature:
 
Page number:128 
Remarks (internal):The taxonomy of Septoria on Rubus is very complicated. At least 7 species of Septoria have been described on Rubus spp. Jørstad (1965) and Radulescu et al. (1973) discussed S. rubi in details. Lu (1992) proposed that Septoria rubi Westend. f. brevispora Sacc. (cf. Saccardo, 1931) on Rubus hispidus L. be synonymous to S. rubi. The present study adds Rubus hirsutus as a new host plant to Korea. This fungus was first recorded with a short description and phytopathological notes by Shin (1998) in Korea. Shin and Sameva (1999) provided the mycological characteristics of this species based on Korean collections.
 
Description type:Non-original description 
Description:Septoria rubi Westend.
Herb. Crypt. Belg. p. 938 (1854)

= Rabdospora rubi Ellis, J. Mycol. p. 90, 1887.
= Septoria rubi Westend. var. saxatilis Allesch., Ber. Bayer Bot. Ges. 2(B); 16, 1891.
= Septoria rubi Westend. var. asiatica Bubák, Ann. Naturhist. Hofmus. Wien. 23: 105, 1909.
= Septoria campoi Speg., Bol. Acad. Nac. Cienc. Cordoba 25: 108, 1921.

Literature: Saccardo (1884, p. 486); Allescher (1901, p. 847); Grove (1935, p. 405); JÀ¸rstad (1965, p. 58); Radulescu et al. (1973, p. 121); Teterevnikova-Babayan (1987, p. 373); Lu (1992, p. 274); Guo et al. (1993, p. 85); Vanev et al. (1997, p. 195); Bai et al. (2003, p. 284); Markevi?ius and Treigiene (2003, p. 55).
Lesions on the upper leaf surface, numerous, scattered or sometimes confluent, distinct, circular to angular, rather small, discrete lesion 1-3 mm diam., up to 7 mm when confluent, at first appearing as olivaceous green discoloration, later turning brown to reddish brown with distinct dark brown border line, finally central area becoming white to grayish brown and surrounded by reddish to darkish brown margin, reddish pigments may diffuse outward to form a halo; on the lower leaf surface initially showing reddish discoloration, later becoming brown with distinct border line, center brown to whitish brown with indistinct border line. Conidiomata pycnidial, scattered, amphigenous, but mostly epiphyllous, rusty brown to brown, subglobose to cupulate, immersed, unilocular, relatively small, 45-80 µm diam.; ostiole circular to partly angular or sometimes irregular, 25-40 µm wide, surrounded with darker cells. Conidia filiform, variable in shape, substraight to falcate, sometimes somewhat flexuous, subtruncate at the base, subobtuse to subacute at the apex, eguttulate, subhyaline, variable in size and septation, 30-65 x (1.5-)2-2.5(-3) µm, (1-)3-6(-8)-septate, septa more or less distinct.
Habitat: On living leaves of Rubus crataegifolius Bunge and Rubus hirsutus Thunb. - (Rosaceae).
Distribution: Australia, New Zealand, Kenya, Libya, South Africa, Zimbabwe, Baltic countries, Bulgaria, Caucasus, Greece, Moldova, Russia (European part, Siberia, Far East), Ukraine, Canada, USA, China, India, Iran, Japan, Kazakhstan, Korea, Taiwan.
Disease: The Septoria leaf spot on Rubus spp. seems to occur commonly in Korea. The disease on Rubus crataegifolius was first recorded in Annual Report of Forestry Research Institute (p. 676 in 1967 year) as associated with Septoria sp. without description. Among 18 species of Rubus growing in Korea, only two species of Rubus were found to be infected with S. rubi in Korea. In the southern part of Korea, Rubus coreanus Miq. is widely cultivated to produce the fruits for making 'Rubus wine' (Bokbunja-ju in Korean). We have not found the Septoria leaf spot on R. coreanus.
The leaf lesions are mostly brown with dark brown to reddish margin during disease development, and finally becoming white to grayish. The Korean name of the disease was 'Galsaek-muni-byong', which means literally 'brown-lesion-disease'.
 
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