文档介绍：Phytobacteriology
principles and practice
Explanation for Figures on cover page
Top left: Symptoms of bacterial brown rot, caused by Ralstonia solanacearum in potato.
Top centre: Fluorescent cells of Erwinia chrysanthemi in immuno-fluorescence microscopy.
Top right: Potato tuber showing symptoms of soft rot caused by Erwinia carotovora subsp.
carotovora.
Lower left: Water-soaked spots on pods of pea (Pisum sativum), caused by Pseudomonas
syringae pv. pisi.
Lower centre: Pure culture of Pseudomonas savastanoi pv. fraxini, 3-day-old culture on nutrient
agar.
Lower right: Galls on root collar of Gladiolus corms, caused by us fascians.
Explanation for Figures on title page
Left: Electron-microscopic (EM) photo of dividing cells of Xanthomonas hyacinthi, causal
agent of yellow disease in hyacinth (Hyacinthus orientalis). Shadow cast technique.
Cells µm in length. Photo: Laboratory for Bulb Research (LBO), Lisse, The
Netherlands.
Right: EM photo of a single cell of Xanthomonas hyacinthi, showing the one polar
flagellum, typical for the genus Xanthomonas. Shadow cast technique. Cell µm in
length. Photo: Laboratory for Bulb Research (LBO), Lisse, herlands.
Fig. 1
Top: Principal bacterial morphologies
(straight rod, curved rod or vibrio,
us, spirillum and curved with
tapered end) of fresh water bacteria,
using a long-forgotten Congo Red
negative stain.
Bottom: Large fresh water Spirillum species
showing flagellar bundles in the
same stain as mentioned above.
Phytobacteriology
principles and practice
Dr. J. D. Janse
Head of Department Bacteriology
Plant Protection Service
Wageningen
herlands
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