Abstract
Abstract When excised wheat roots are exposed to blue light, catalase activity changes in a way to he expected as a result of photodestruction with first order kinetics. Wheat root catalase in vivo is less light sensitive than animal catalase in vitro , possibly due to internal screening. Illumination of the roots with red light causes some increase in catalasc activity. Peroxidase activity is much less affected by light. No relation has been found between catalase destruction and chlorophyll formation. The ability of roots to oxidize pyrogallol to purpurogallin (by other workers interpreted as peroxide production) is decreased by light, especially blue light. On the contrary, one peroxide producing enzyme, glycolic acid oxidase, was detected only in roots grown in blue light. The total flavin content, or the fraction present as FAD, is not affected by light. The ascorbic acid content is low, but slightly increased by blue light.
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Claims 9
Claim · model-written summary
Blue light changed wheat root catalase activity consistent with photodestruction.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- blue lighte0
- Outcome
- catalase activitye0
- Direction
- changese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When excised wheat roots are exposed to blue light, catalase activity changes in a way to he expected as a result of photodestruction with first order kinetics.”
Claim · model-written summary
Wheat root catalase in vivo was less light sensitive than animal catalase in vitro.
- Taxon
- WheatTriticum aestivume0
- Outcome
- catalasee0
- Direction
- less light sensitivee0
- Comparator
- animal catalase in vitroe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat root catalase in vivo is less light sensitive than animal catalase in vitro”
Claim · model-written summary
Red light increased root catalase activity somewhat.
Not reportedTaxonComparator
Verbatim
e0“Illumination of the roots with red light causes some increase in catalasc activity.”
t0“Wheat Roots”
Claim · model-written summary
Peroxidase activity was less affected by light.
Not reportedTaxonComparator
Verbatim
e0“Peroxidase activity is much less affected by light.”
t0“Wheat Roots”
Claim · model-written summary
Catalase destruction was unrelated to chlorophyll formation.
Not reportedTaxon
Verbatim
e0“No relation has been found between catalase destruction and chlorophyll formation.”
t0“Wheat Roots”
Claim · model-written summary
Light, especially blue light, reduced root oxidation of pyrogallol to purpurogallin.
Not reportedTaxonComparator
Verbatim
e0“The ability of roots to oxidize pyrogallol to purpurogallin (by other workers interpreted as peroxide production) is decreased by light, especially blue light.”
t0“Wheat Roots”
Claim · model-written summary
Glycolic acid oxidase was detected only in roots grown under blue light.
Not reportedTaxon
Verbatim
e0“one peroxide producing enzyme, glycolic acid oxidase, was detected only in roots grown in blue light.”
t0“Wheat Roots”
Claim · model-written summary
Light did not affect total flavin content or the FAD fraction.
- Treatment
- lighte0
- Outcome
- total flavin content, or the fraction present as FADe0
- Direction
- not affectede0
Not reportedTaxonComparator
Verbatim
e0“The total flavin content, or the fraction present as FAD, is not affected by light.”
t0“Wheat Roots”
Claim · model-written summary
Blue light slightly increased ascorbic acid content.
Not reportedTaxonComparator
Verbatim
e0“The ascorbic acid content is low, but slightly increased by blue light.”
t0“Wheat Roots”
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