Shokubutsugaku Zasshi
Online ISSN : 2185-3835
Print ISSN : 0006-808X
ISSN-L : 0006-808X
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Volume 78, Issue 925
Displaying 1-5 of 5 articles from this issue
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  • Electron Microscopical Observations on the Formation of Yeast-mitochondria
    Masako OSUMI
    1965 Volume 78 Issue 925 Pages 231-239
    Published: 1965
    Released on J-STAGE: October 31, 2006
    DOIhttps://doi.org/10.15281/jplantres1887.78.231
    JOURNAL FREE ACCESS
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    The influence of different composition of medium on the formation of mitochondria, the developmental process and the origin of mitochondria were studied by electron microscopy in the cell of Saccharomyces Strain No. 24843 (Lindegren's Carbondale Breeding Stock). The formation of mitochondria in aerobically grown yeast is more promoted by ethanol than by glucose as carbon source, and it is also promoted by adding ergosterol to the medium. The mitochondria and endoplasmic reticulum-like structure disappear in anaerobically grown yeast, but they still exist in 10% of cells which have grown on the medium with ergosterol. The yeast-mitochondria are enveloped by a pair of unit membranes. The total thickness of the mitochondrial membrane is 200 to 225Å. The unit membrane is about 75Å thick and is made up of the two electron-opaque layers, each about 25Å thick, separated by a light space of the same thickness. The origin of yeast-mitochondria is supposed to have an intimate relation with the membrane of endoplasmic reticulum-like structure. This kind of membrane is supposed to roll up and elaborately fold each other. The inner membrane infold from some parts into the matrix, and form typical mitochondrial cristae. Then mature mitochondria are formed.
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  • The Fruit-body Formation in Collybla velutipes Induced by the Lower Temperature Treatment of One Short Duration
    Kenjiro KINUGAWA, Hisahiko FURUKAWA
    1965 Volume 78 Issue 925 Pages 240-244
    Published: 1965
    Released on J-STAGE: October 31, 2006
    DOIhttps://doi.org/10.15281/jplantres1887.78.240
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    The fruit-body formation was studied using a strain of Collybia velutipes. When one short duration of lower temperature was given in the early period of incubation at constant 25°, the fungus was induced primordia formation of the fruit-body, while on the mycelium without being exposed to any lower temperature it did not occur. The minimal duration of lower temperature was 2 days at 5° and 10°, and half a day at 15° for the fruiting. The growth of fruit-body was vigorous when kept at 15° or at alternating room temperature between 5° and 20°, while at 25° it was much inhibited. The favourable temperature for the initiation and the growth of the fruit-body was unfavourable for the mycelial growth.
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  • Classification and Phylogeny of the Genus Mosla (=Orthodon) (Lamiaceae) Based on the Constituents of Essential Oil II.
    Yasuji FUJITA
    1965 Volume 78 Issue 925 Pages 245-252
    Published: 1965
    Released on J-STAGE: October 31, 2006
    DOIhttps://doi.org/10.15281/jplantres1887.78.245
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    1. The author discussed the phylogenetic relationship of species in the genus Mosla (Lamiaceae) mainly based on the mode of appearance of the constituents of essential oil.
    2. Five elements of formation of essential oils were pointed out in this genus (Fig. 1, A. B. C. D. E) and phylogeny of each species was shown in a cubic system according to their modes of appearance (Fig. 2).
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  • Karyological Studies on Mosses III.
    Utilization of the Regeneration for the Karyological Studies
    Satoru INOUE
    1965 Volume 78 Issue 925 Pages 253-260
    Published: 1965
    Released on J-STAGE: October 31, 2006
    DOIhttps://doi.org/10.15281/jplantres1887.78.253
    JOURNAL FREE ACCESS
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    This paper deals with the results of the karyological studies on fifteen moss species. In order to obtain vivid plants, a new method of culture was employed. In the cultures of these mosses, innovations were rarely produced. The regenrated young shoots from the fragments of stem or from the removed leaves were used for the karyological studies. In these karyological studies, metaphase and heteropycnotic chromosomes in the mitotic cells
    of gametophyte were observed. The chromosome numbers and karyotypes were determined as follows:
    Bryoxiphium japonicum K(n)=14=V(H)+2V+2J+8(4v+4j)+v(h)
    Blindia japonica K(n)=14=2V(H)+2V+2J+6(4v+2j)+2m(h)
    Dicranella heteromalla K(n)=14=2V(H)+2V+2J+6(4v+2j)+2m(h)
    Brothera leana K(n)=12=2V(H)+2V+2J+4(2v+2j)+2v(h)
    Oncophorus crispifolius K(n)=14=2V(H)+2V+2J+6(4v+2j)+2m(h)
    Trachypus humilis K(n)=11=V(H)+2J+7(5v+2j)+m(h)
    Pseudospiridentopsis horrida K(n)=11=V(H)+2J+7(5v+2j)+m(h)
    Dolichomitra cymbifolia K(n)=11=V(H)+2V+J+6(4v+2j)+v(h)
    Dolichomitriopsis diversiformis K(n)=11=V(H)+2V+J+6(4v+2j)+m(h)
    Isothecium subdiversiforme K(n)=11=V(H)+2V+J+6(4v+2j)+m(h)
    Fauriella tenuis K(n)=11=V(H)+V+2J+6(5v+j)+m(h)
    Fabronia matsumurae K(n)=11=V(H)+V+J+7(5v+2j)+m(h)
    Schwetschkeopsis japonica K(n)=11=V(H)+2V+7(5v+2j)+m(h)
    Okamuraea brachydictyon K(n)=11=2V(H)+J+7(5v+2j)+m(h)
    O. hakoniensis K(n)=11=2V(H)+J+7(5v+2j)+m(h).
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  • Chromosome Morphology of Smilacina scilloidea (Liliaceae) from Mexico
    Shoichi KAWANO
    1965 Volume 78 Issue 925 Pages 261-262
    Published: 1965
    Released on J-STAGE: October 31, 2006
    DOIhttps://doi.org/10.15281/jplantres1887.78.261
    JOURNAL FREE ACCESS
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