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Remarks (public):For a complete description including images see www.cababstractsplus.org/dfb 
Remarks (internal):The principal diseases caused by this pathogen occur on coffee growing under marginal or poor cultural conditions (38: 745). Storey's bark disease (11: 711; 33: 449), first described in 1932, was found to be caused by Fusarium lateritium var. longum which existed as two strains A1 and A2. Gordon confirmed the A1 strain as F. stilboides.Recently Gordon has shown A2 to be a mutant of A1 and has mated this with F. stilboides producing Gibberellaperithecia (unpublished). Siddiqi and Corbett (1963), have shown all three diseases can be caused by a singleisolate from coffee infected by Storey's bark disease. The pathogen does not penetrate the xylem of its host and isdistinct from Fusarium lateritium which has been reported associated with coffee canker in the Ivory Coast (40:534).The pathogen has also been found attacking immature berries of Coffea liberica, in Trinidad by Gordon (36: 501) and on both berries and leaves of C. arabica in Nyasaland by Siddiqi and Corbett (1963), but this appears to be aminor role.Coffea robusta, and other species have also been reported as substrata for F. stilboides by Gordon from Kenya, Uganda and Southern Rhodesia (40: 89). Three varieties of C. arabica appear to be resistant in Nyasaland, where the application of captan as a paste to wounds gives promise of control (41: 7).
 
Description type:Non-original description 
Description:Fusarium stilboides Wollenw., Fus. Auto. Dell., no. 615, 1924.
= Fusarium lateritium var. longum Wollenw., 1931
= Fusarium lateritium var. longum forma A1 & A2 Storey, 1932.
Colonies on potato sucrose agar (pH 6,5) initially a flat white mycelial growth followed by a pink colouration, the colonybecoming tufted and deep carmine to port-wine coloured; sterile blue to olive-green sclerotia developing. Microconidia absentbut a few 0-3-septate conidia may develop sparsely from aerial mycelium. Sporodochia usually present. Macroconidiaoblong, cylindrical to fusiform, straight to falcate, apex often beaked, thin-walled, pedicellate, pinkish to orange or red inmass, 0-septate 7-14 x 2-2,5 µm, 1-septate 9-23 x 2,5-3,5 µm, 3-septate 15-35 x 2,5-3,5 µm, 6-9-septate 35-85 x 3,5-5µm. Chlamydospores absent in mycelium but present in conidia.
Hosts: On Coffea arabica.
Diseases: Storey's bark disease in which suckers are attacked at their base and finally killed; scaly bark in which mature main stems are attacked through wounds left after pruning-off laterals and are subsequently girdled; and collar rot, where stems are slowly girdled at or slightly above soil level leading to death of the plants.
Geographical distribution: Tanganyika, Nyasaland and possibly Madagascar.Physiological specialization: Not known.
Transmission: Mainly by rain-drop splash (41: 7).
Literature: A useful summary is contained in the paper on coffee bark diseases in Nyasaland by Siddiqi & Corbett, Trans. Brit. Mycol. Soc. 46(1): 91-101, 1963.
 
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