Japanese Journal of Phytopathology
Online ISSN : 1882-0484
Print ISSN : 0031-9473
ISSN-L : 0031-9473
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Volume 5, Issue 3
Displaying 1-7 of 7 articles from this issue
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  • Cytological Study of Tobacco Mosaic, I
    S. HIRAYAMA, A. YUASA
    1935 Volume 5 Issue 3 Pages 197-205
    Published: 1935
    Released on J-STAGE: March 26, 2009
    DOIhttps://doi.org/10.3186/jjphytopath.5.197
    JOURNAL FREE ACCESS
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    The cell inclusions of Nicotiana tabacum L. (Hatano variety) affected with the mosaic disease were observed. X-bodies and other cell inclusions were found in all tissues of mosaic plants. Namely, they occured in all leaf tissues (epidermis, guard-cells, hairs, palisade and spongy parenchyms), in stems (with hairs), in roots (except root hairs, root caps, and calyptrogens) and in flowers (hairs, calyxes, corollas and anthers; rarely microsporogenous cells, pollen mother cells, pollens and pollen-tubes). Striate materials, raphids, crystalline plates and amorphous bodies were also found in the tissues in which X-bodies occured. Anther-tissues contained abundant crystals of calcium oxalate, and root tissues bipyramidic, rhombohedral or hexahedral crystals.
    Inoculation was done by means of rubbing over the leaf surface with cloth soaked in expressed juice of diseased leaves. In the leaf tissues, X-bodies and other cell inclusions were observed about 1 week after the inoculation. In the cases of root tissues, they occured within a little shorter periods. However, it seems that the period of the occurrence of cell inclusions varies according to the internal and external factors.
    Tracing the process of the formation of X-bodies, the cytoplasm, mostly neighbouring the nucleus, becomes denser in its appearance, and then its margin becomes obvious, and at last the body is filled with granular constitution containing vacuoles. According to the present observations, the X-bodies must be considered as being derived from the cytoplasm. Striate materials also seems to be the stratified accumulation of the crystalline products of the cytoplasm. Raphids and crystalline plates may be the crystals produced from cytoplasm. The amorphous bodies are also supposed to be the products of the cytoplasm.
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  • A Helotium causing the black bulb disease of Allium Bakeri REGEL
    H. ASUYAMA, Y. NAGAI, T. NISIKORI
    1935 Volume 5 Issue 3 Pages 216-224
    Published: 1935
    Released on J-STAGE: March 26, 2009
    DOIhttps://doi.org/10.3186/jjphytopath.5.216
    JOURNAL FREE ACCESS
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    In the field the bulb of Allium Barkeri REGEL is subjected to attack by a fungus. Its outer scale is altered into a black membrane, on account of which market value of the crops is reduced. In the membrane a dense ramification of dark mycelia is observed. Kept in a moist place, it gives rise to brown apothecia which are funnel-, cup- or dish-shaped, having smooth stipes of variable lengths. Clavate asci measure 120-190×8-13μ in dimension and contain eight spores, which are 1-2 celled, being 13.3-19.0×5.7-6.7μ in size.
    The fungus may develop profusely on agar media of various kinds. On potato agar it produces white, floccose aerial mycelium and tough, black-brown thallus. After about four weeks it forms black, stromatoid crusts on the substratum. Apothecia arise from these crusts. Optimum temperature for mycelial growth is 20-25°C. Conidial stage is unknown.
    The fungus is considered to be a species of Helotium, but to decide whether it is new to science or not, further investigations are required. Inoculation with mycelium and ascospores resulted in blackening of the scales, so that our fungus is recognized to be the cause of the disease under consideration.
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  • [title in Japanese]
    [in Japanese]
    1935 Volume 5 Issue 3 Pages 265-269
    Published: 1935
    Released on J-STAGE: March 26, 2009
    DOIhttps://doi.org/10.3186/jjphytopath.5.265
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1935 Volume 5 Issue 3 Pages 270-274
    Published: 1935
    Released on J-STAGE: March 26, 2009
    DOIhttps://doi.org/10.3186/jjphytopath.5.270
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1935 Volume 5 Issue 3 Pages 275-278
    Published: 1935
    Released on J-STAGE: March 26, 2009
    DOIhttps://doi.org/10.3186/jjphytopath.5.275
    JOURNAL FREE ACCESS
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  • Erratum to : On Some Physiological Characters of Stereum induratum BERK
    1935 Volume 5 Issue 3 Pages 292a
    Published: 1935
    Released on J-STAGE: March 26, 2009
    DOIhttps://doi.org/10.3186/jjphytopath.5.3_292a
    JOURNAL FREE ACCESS
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  • Erratum to : Notes on the penetration phenomena and haustorium formation in Peronospora Brassicae GÄUM
    1935 Volume 5 Issue 3 Pages 292b
    Published: 1935
    Released on J-STAGE: March 26, 2009
    DOIhttps://doi.org/10.3186/jjphytopath.5.3_292b
    JOURNAL FREE ACCESS
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