Japanese Journal of Phytopathology

Online ISSN : 1882-0484
Print ISSN : 0031-9473
ISSN-L : 0031-9473

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Volume 25, Issue 5

Displaying 1-7 of 7 articles from this issue

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An anti-bacterial serum method for the purification of phages which attack phytopathogenic bacteria

Satoshi WAKIMOTO

1960 Volume 25 Issue 5 Pages 205-208_2
Published: December 25, 1960
Released on J-STAGE: April 03, 2009

DOIhttps://doi.org/10.3186/jjphytopath.25.205

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A purification method using anti-bacterial sera to remove a major part of the bacterial debris from crude phage suspension followed by differential centrifuging was developed, and was successfully applied to make clear under electron microscope, the shape and size of several phage particles attacking phytopathogenic bacteria.
Each of Xanthomonas oryzae phages OP₁, OP_1h, and OP_1h2, the OP₁ group ones, is a tadpole shaped particle having a polyhedral head 70mμ in diameter and a tail of 150mμ in length and 15mμ in width. X. oryzae phage OP₂ is also tadpole shaped, having a polyhedral head as large as that of OP₁, but it differs from OP₁ in its long and slender tail of 95mμ in length and 25mμ in width.
Xanthomonas citri phage CP₁ is also of a tadpole shaped, but the head looks like spherical, 68mμ in diameter, the tail being 160mμ in length and 15mμ width.

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On the amino acids in potato leaves of different stages of growth and potato tubers infected with Phytophthora infestans

Masaki YAMAMOTO, Hironori HONDA

1960 Volume 25 Issue 5 Pages 209-213
Published: December 25, 1960
Released on J-STAGE: February 19, 2009

DOIhttps://doi.org/10.3186/jjphytopath.25.209

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It was rather difficult to deduce a definite conclusion regarding the difference of amino acid content between the potato varieties, grown under different stages, resistant or susceptible to Phytophthora infestans, although some quantitative variations of amino acids were observed among different potato varieties. In general, potato tubers of resistant varieties have rather small quantity of glutamic acid compared with susceptible ones. Generally speaking, quantity of aspartic acid in potato tubers decreased with the infection of P. infestans, and increase or decrease of the amounts of other amino acids in potato tubers were also accompanied with the infection of P. infestans.

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Abstracts of papers presented at the summer meeting of the Kanto Division

1960 Volume 25 Issue 5 Pages 214-220
Published: December 25, 1960
Released on J-STAGE: February 19, 2009

DOIhttps://doi.org/10.3186/jjphytopath.25.214

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Abstracts of papers presented at the meeting of the Kyushu Division

1960 Volume 25 Issue 5 Pages 220-224
Published: December 25, 1960
Released on J-STAGE: February 19, 2009

DOIhttps://doi.org/10.3186/jjphytopath.25.220

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Abstracts of papers presented at the meeting of the Kansai Division

1960 Volume 25 Issue 5 Pages 224-232
Published: December 25, 1960
Released on J-STAGE: February 19, 2009

DOIhttps://doi.org/10.3186/jjphytopath.25.224

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Abstracts of papers presented at the meeting of the Hokkaido Division

1960 Volume 25 Issue 5 Pages 233-237
Published: December 25, 1960
Released on J-STAGE: February 19, 2009

DOIhttps://doi.org/10.3186/jjphytopath.25.233

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Abstracts of papers presented at the winter meeting of the Kanto Division

1960 Volume 25 Issue 5 Pages 237-242
Published: December 25, 1960
Released on J-STAGE: February 19, 2009

DOIhttps://doi.org/10.3186/jjphytopath.25.237

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