Abstract
Some photoreactions of photosynthetic materials (corn chloroplasts, spinach chloroplasts and subchloroplast particles rich in System II) are examined at 77°K. The fluorescence yield of chlorophyll is observed to decrease reversibly upon irradiation at 77°K. The presence of ferricyanide in the chloroplast preparations increases the rate of decline of fluorescence yield while the presence of benzylviologen and phenazine methosulfate inhibits the decline of fluorescence yield. Extracts of Ricinus communis leaf (castor bean) also inhibits the decline of fluorescence yield. Data is given showing the effect of linolenic acid, extracts of Ricinus leaf, ferricyanide, benzylviologen and phenazine methosulfate on the ratio of fluorescence intensities at 725 and 700 nm.
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Claims 6
Claim · model-written summary
corn chloroplast fluorescence yield decreased reversibly on irradiation at 77°K.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- irradiation at 77°Ke1
- Outcome
- fluorescence yield of chlorophylle1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Some photoreactions of photosynthetic materials (corn chloroplasts, spinach chloroplasts and subchloroplast particles rich in System II) are examined at 77°K”
e1“The fluorescence yield of chlorophyll is observed to decrease reversibly upon irradiation at 77°K”
Claim · model-written summary
spinach chloroplast fluorescence yield decreased reversibly on irradiation at 77°K.
- Taxon
- spinach
Spinacia oleraceae0 - Treatment
- irradiation at 77°Ke1
- Outcome
- fluorescence yield of chlorophylle1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Some photoreactions of photosynthetic materials (corn chloroplasts, spinach chloroplasts and subchloroplast particles rich in System II) are examined at 77°K”
e1“The fluorescence yield of chlorophyll is observed to decrease reversibly upon irradiation at 77°K”
Claim · model-written summary
ferricyanide increases chloroplast fluorescence decline.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- ferricyanidee0
- Outcome
- decline of fluorescence yielde0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The presence of ferricyanide in the chloroplast preparations increases the rate of decline of fluorescence yield”
e1“Some photoreactions of photosynthetic materials (corn chloroplasts, spinach chloroplasts and subchloroplast particles rich in System II) are examined at 77°K”
Claim · model-written summary
benzylviologen inhibits chloroplast fluorescence decline.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- benzylviologene0
- Outcome
- decline of fluorescence yielde0
- Direction
- inhibitse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the presence of benzylviologen and phenazine methosulfate inhibits the decline of fluorescence yield”
e1“Some photoreactions of photosynthetic materials (corn chloroplasts, spinach chloroplasts and subchloroplast particles rich in System II) are examined at 77°K”
Claim · model-written summary
phenazine methosulfate inhibits chloroplast fluorescence decline.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- phenazine methosulfatee0
- Outcome
- decline of fluorescence yielde0
- Direction
- inhibitse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the presence of benzylviologen and phenazine methosulfate inhibits the decline of fluorescence yield”
e1“Some photoreactions of photosynthetic materials (corn chloroplasts, spinach chloroplasts and subchloroplast particles rich in System II) are examined at 77°K”
Claim · model-written summary
Extracts of Ricinus communis leaf (castor bean) inhibits chloroplast fluorescence decline.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- Extracts of Ricinus communis leaf (castor bean)e0
- Outcome
- decline of fluorescence yielde0
- Direction
- inhibitse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Extracts of Ricinus communis leaf (castor bean) also inhibits the decline of fluorescence yield”
e1“Some photoreactions of photosynthetic materials (corn chloroplasts, spinach chloroplasts and subchloroplast particles rich in System II) are examined at 77°K”
The same questions in other papers
radiation · physiology: pigments · Zea mays (maize)Positive and negative results
5 papers in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
6 papers more in this group
See all 10 papers →radiation · physiology: pigments · Spinacia oleracea (spinach)Results agree
3 papers in the same direction as this paper
- no effect
- negative
- negative
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.