. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 41 B. betae Mig. is reported as the cause of gummosis of beet.^" B. brassicsevorus Del. isolated from diseased cabbage ^"^ is per- haps identical with Pseudomonas fluorescens. See page 27. B. carotovonis Jones. (Group number ) From agar 1-2 days- old as short or long rods, in short or long chains. X It, com- monly X 2 n; ends rounded. No spore; flagella 2-10, peritri- chiate; no capsule; Gram negative. White on all media. Agar slope filiform to spread- ing,
. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 41 B. betae Mig. is reported as the cause of gummosis of beet.^" B. brassicsevorus Del. isolated from diseased cabbage ^"^ is per- haps identical with Pseudomonas fluorescens. See page 27. B. carotovonis Jones. (Group number ) From agar 1-2 days- old as short or long rods, in short or long chains. X It, com- monly X 2 n; ends rounded. No spore; flagella 2-10, peritri- chiate; no capsule; Gram negative. White on all media. Agar slope filiform to spread- ing, glistening, opaque to opalescent. In gela- tine stab; liquefaction crateriform to infun- dibuliform. Broth clouded, pellicle thin to absent, sediment flocculent; milk coagu- lated. Agar colonies, roimd, smooth, entire to imdulate, amor- phous or granular. Some gas in dextrose, lactose and saccharose, nitrates reduced to nitrites; indol feeble. T. D. P. 48-50°. Opt. 25-30°. A considerable number of cultivated plants suffer soft rot from the attacks of a non-chromogenic liquefying bacillus. Among the plants so affected are cabbage, turnips and other crucifers; parsnip, carrot, mangel, sugar-beet, potato, celery, tomato, Jerusalem artichoke, asparagus, rhubarb, onion and iris. In 1901, Jones reported an organism isolated from rotting carrots which he named B. ^- ">^ It disorganized tissue by solution of the middle lamella; and infection into wounds led. Fig. ; -B. carotovorus wedging apart cells of the carrot. After Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stevens, Frank Lincoln, 1871-1934. New York : Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1913
