. Diseases of plants induced by cryptogamuc parasites; introduction to the study of pathogenic fungi, slime-fungi, bacteria, and algae. English ed. by William G. Smith. Plant diseases; Parasitic plants. 'lIOKA. OL'O decay, so that not only is the root itself worthless, but the aerial shoot is badly developed. The destruction is greatly favoured by moist rainy years. The malformations of the root are the result of hypertrophy of the host-cells due to a stimulus exerted by the plasniodiuni of Plasmodi&phora, not only on the contents of cells inhabited by it, but also extending int
. Diseases of plants induced by cryptogamuc parasites; introduction to the study of pathogenic fungi, slime-fungi, bacteria, and algae. English ed. by William G. Smith. Plant diseases; Parasitic plants. 'lIOKA. OL'O decay, so that not only is the root itself worthless, but the aerial shoot is badly developed. The destruction is greatly favoured by moist rainy years. The malformations of the root are the result of hypertrophy of the host-cells due to a stimulus exerted by the plasniodiuni of Plasmodi&phora, not only on the contents of cells inhabited by it, but also extending into the cells of the whole neigli- bouring tissue. The cells so inilnenced enlar^i*' in size and. Kiij. ;il6.—flasmoiiiophofa Itriuiiirae. Effcuta uii 'i'iirnii>» gmwii in f^cutluiia. (v. Tubcvif phot.) become divided iij) by new cidl-walls. Tin- plasiiKMljuiu niakt-^ its way frdiu cfll to cell by means of the wall-j)its, and by aljsorbing the contents it and tills ihe whnle cell. ()n exhaustion of foud, and without previous enclosure in a luenibrane, the jilasmodiuin tonus itself into sjtores. so that the tissues of attacked roots become completely tilled with thick- walled s])ores, which are set free; only after decay of the surrounding tissues and eell-iueinliranes. The spores hibernate. anil in spriiiL,' inyxanioebae sli]i out, capable .if iidccling. 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 Tubeuf, Karl, Freiherr von, 1862-. London Longman's, Green
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectparasit, bookyear1897
