ノリ糸状体の黄斑病に関する研究-III 発病におよぼす水質の影響

谷口 道子

doi:10.2331/suisan.43.259

Strdies on the Yellow SpotDisease in conchocelis-III

Aquatic Factors Influencing the Development of the Yellow Spot Disease

Michiko TANIGUCHI

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JOURNAL FREE ACCESS

1977 Volume 43 Issue 3 Pages 259-263

DOI https://doi.org/10.2331/suisan.43.259

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Published: March 25, 1977 Received: - Available on J-STAGE: February 29, 2008 Accepted: August 12, 1977 Advance online publication: - Revised: -
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Date of correction: February 29, 2008 Reason for correction: - Correction: ABSTRACT Details: Wrong : Aquatic factors that influence the development of yellow spot disease in Porphyra conchocelis were examined.
1. When sterilized water drawn from a culture container in which the disease conchocelis inoculated with the fractionated pathogen complex suffered from the disease. On the other hand, when the inoculated conchocelis were kept in fresh sea water, they did not suffer from the disease at all. There was remarkable difference between the srerilized culture water and the fresh seawater in their respective COD values and NO₃-N concentrations; i.e., the COD value and NO₃-N concentration was comparatively high in the sterilized culture water and low in the fresh seawater.
2. The appearance of the symptoms on inoculated conchocelis was affected by the NO₃-N concentration and the amount of laver extract which were added to the culture water; i.e., the appearance of the symptom was restained at NO₃-N 100μg at.|liter or the laver extract 1.25g|liter, was not always restained at NO₃-N lower than 100μgat.|liter or the laver extract lower than 1.25g|liter, and was scarcely restained and spread quickly at NO₃-N higher than 500μgat.|liter or the laver extract 2.5g|liter.
3. The appearance of the symptom on incoulater conchocelis was not restained at pH 5.0 in culture water, and restained at the pH value higher than neutral.
Right : Aquatic factors that influence the development of yellow spot disease in Porphyra conchocelis were examined.
1. When sterilized water drawn from a culture container in which the disease conchocelis inoculated with the fractionated pathogen complex suffered from the disease. On the other hand, when the inoculated conchocelis were kept in fresh sea water, they did not suffer from the disease at all. There was remarkable difference between the srerilized culture water and the fresh seawater in their respective COD values and NO₃-N concentrations; i.e., the COD value and NO₃-N concentration was comparatively high in the sterilized culture water and low in the fresh seawater.
2. The appearance of the symptoms on inoculated conchocelis was affected by the NO₃-N concentration and the amount of laver extract which were added to the culture water; i.e., the appearance of the symptom was restained at NO₃-N 100μg at./liter or the laver extract 1.25g/liter, was not always restained at NO₃-N lower than 100μgat./liter or the laver extract lower than 1.25g/liter, and was scarcely restained and spread quickly at NO₃-N higher than 500μgat./liter or the laver extract 2.5g/liter.
3. The appearance of the symptom on incoulater conchocelis was not restained at pH 5.0 in culture water, and restained at the pH value higher than neutral.

Date of correction: February 29, 2008 Reason for correction: - Correction: PDF FILE Details: -

Abstract

Aquatic factors that influence the development of yellow spot disease in Porphyra conchocelis were examined.
1. When sterilized water drawn from a culture container in which the disease conchocelis inoculated with the fractionated pathogen complex suffered from the disease. On the other hand, when the inoculated conchocelis were kept in fresh sea water, they did not suffer from the disease at all. There was remarkable difference between the srerilized culture water and the fresh seawater in their respective COD values and NO₃-N concentrations; i.e., the COD value and NO₃-N concentration was comparatively high in the sterilized culture water and low in the fresh seawater.
2. The appearance of the symptoms on inoculated conchocelis was affected by the NO₃-N concentration and the amount of laver extract which were added to the culture water; i.e., the appearance of the symptom was restained at NO₃-N 100μg at./liter or the laver extract 1.25g/liter, was not always restained at NO₃-N lower than 100μgat./liter or the laver extract lower than 1.25g/liter, and was scarcely restained and spread quickly at NO₃-N higher than 500μgat./liter or the laver extract 2.5g/liter.
3. The appearance of the symptom on incoulater conchocelis was not restained at pH 5.0 in culture water, and restained at the pH value higher than neutral.

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