Bacterial Leaf Spot of Cissus japonica WILLD
1939 Volume 9 Issue 1 Pages 41-43
Details
1939 Volume 9 Issue 1 Pages 41-43
A bacterial disease on Cissus japonica WILLD., with black spots on the leaves has been noted. The causal organism is believed to be a heretofore undescribed species, and proposed the name Aplanobacter cissicola n. sp. The description of the bacteria is as follows:
A non-motile short rod with rounded ends, occurs in single or in pair. Measures 1.0-2.0×0.5-0.9μ, no spore but capsule formed. Gram negative. Colonies on potato extract agar are circular, convex, smooth, and dirty white. Feebly clouded in beef bouillon followed by precipitation of pellicle and rim. Gelatin not liquefied, milk digested without coagulation; good growth in USCHINSKY'S solution with the formation of pellicle, green pigment and increased viscidity. Strict aerobic, nitrate not reduced, nor hydrogen sulphide and indol produces. Starch is not digested, no acid nor gas from sucrose, glucose, lactose and glycerin. Salt toleration 3%. Minimum temprature for growth 10°C, maximum 35°C, optimum 30°C, with the thermal death point of 49-50°C.
The host is limited to Cissus japonica WILLD., being nonparasitic on other vines.
