Microorganisms and plant of Autonomous Biological Systems (ABS) samples
Distribution of microorganisms and cellular structure of an Autonomous Biological Systems (ABS) were studied with a special attention to the effect of space environments. Viable cell densities measured by the direct fluorescence microscopic method were in the order of 10(5) cells/ml for fractions 1 (upper suspension) and 2 (lower suspension), and 10(6) cells/ml for fraction 3 (sediments). These values were 10 to 100 times larger than the values obtained by the classical colony forming unit method. No difference between flight and ground samples was observed in the vertical distribution of viable microorganisms when fractionation and analysis were carried out after recovery. Intracellular distribution of chloroplasts in higher green plants, Ceratophyllum demersum, of flight samples was disturbed after 10 days of flight (24hrs/day light on). After 4 months of flight (Mir/STS-79/81) with 24 hrs light on, Ceratophyllum demersum was completely disintegrated. On the other hand, in the second 4-months-flight experiment with 16 hrs/day light on, Ceratophyllum demersum was only slightly deteriorated.
Medienart: |
Artikel |
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Erscheinungsjahr: |
1998 |
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Erschienen: |
1998 |
Enthalten in: |
Zur Gesamtaufnahme - volume:12 |
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Enthalten in: |
Uchu Seibutsu Kagaku - 12(1998), 4 vom: 01. Dez., Seite 373-6 |
Sprache: |
Englisch |
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Beteiligte Personen: |
Kawasaki, Y [VerfasserIn] |
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Themen: |
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Anmerkungen: |
Date Completed 12.12.1999 Date Revised 05.11.2019 published: Print Citation Status MEDLINE |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM11440447X |
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100 | 1 | |a Kawasaki, Y |e verfasserin |4 aut | |
245 | 1 | 0 | |a Microorganisms and plant of Autonomous Biological Systems (ABS) samples |
264 | 1 | |c 1998 | |
336 | |a Text |b txt |2 rdacontent | ||
337 | |a ohne Hilfsmittel zu benutzen |b n |2 rdamedia | ||
338 | |a Band |b nc |2 rdacarrier | ||
500 | |a Date Completed 12.12.1999 | ||
500 | |a Date Revised 05.11.2019 | ||
500 | |a published: Print | ||
500 | |a Citation Status MEDLINE | ||
520 | |a Distribution of microorganisms and cellular structure of an Autonomous Biological Systems (ABS) were studied with a special attention to the effect of space environments. Viable cell densities measured by the direct fluorescence microscopic method were in the order of 10(5) cells/ml for fractions 1 (upper suspension) and 2 (lower suspension), and 10(6) cells/ml for fraction 3 (sediments). These values were 10 to 100 times larger than the values obtained by the classical colony forming unit method. No difference between flight and ground samples was observed in the vertical distribution of viable microorganisms when fractionation and analysis were carried out after recovery. Intracellular distribution of chloroplasts in higher green plants, Ceratophyllum demersum, of flight samples was disturbed after 10 days of flight (24hrs/day light on). After 4 months of flight (Mir/STS-79/81) with 24 hrs light on, Ceratophyllum demersum was completely disintegrated. On the other hand, in the second 4-months-flight experiment with 16 hrs/day light on, Ceratophyllum demersum was only slightly deteriorated | ||
650 | 4 | |a Journal Article | |
650 | 7 | |a Chlorophyll |2 NLM | |
650 | 7 | |a 1406-65-1 |2 NLM | |
700 | 1 | |a Koike, J |e verfasserin |4 aut | |
700 | 1 | |a Ijiri, K |e verfasserin |4 aut | |
700 | 1 | |a Yamashita, M |e verfasserin |4 aut | |
700 | 1 | |a Sugiura, K |e verfasserin |4 aut | |
700 | 1 | |a Kobayashi, K |e verfasserin |4 aut | |
700 | 1 | |a Seki, K |e verfasserin |4 aut | |
700 | 1 | |a Ishikawa, Y |e verfasserin |4 aut | |
700 | 1 | |a Mizutani, H |e verfasserin |4 aut | |
700 | 1 | |a Poynter, J |e verfasserin |4 aut | |
700 | 1 | |a MacCallum, T |e verfasserin |4 aut | |
700 | 1 | |a Anderson, G |e verfasserin |4 aut | |
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