Abstract
Abstract The chloroplasts from wheat leaves developed under intermittent illumination (1 ms light + 12 min dark) were able to photoreduce DPIP with DPC as electron donor but unable to photoreduce DPIP with water as electron donor. On exposure of these leaves to continuous light, the Hill activity with water as electron donor was rapidly induced. The photoactivation was sensitive to the treatment with DCMU prior to exposure to continuous light. The action spectrum for the photoactivation showed a sharp band at 680 nm with a distinct shoulder at 650 nm, and was similar to the absorption spectrum of photosytem‐2 particles. These data suggest that the electron transfer driven by photosystem 2 is essential for the activation of the water‐splitting system in the chloroplasts of intermittently illuminated leaves.
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Claims 7
Claim · model-written summary
Chloroplasts from wheat leaves grown under intermittent illumination could photoreduce DPIP with DPC as electron donor.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- intermittent illumination (1 ms light + 12 min dark)e0
- Outcome
- photoreduce DPIP with DPC as electron donore0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The chloroplasts from wheat leaves developed under intermittent illumination (1 ms light + 12 min dark) were able to photoreduce DPIP with DPC as electron donor”
Claim · model-written summary
Chloroplasts from wheat leaves grown under intermittent illumination were unable to photoreduce DPIP with water as electron donor.
- Taxon
- wheatTriticum aestivume1
- Treatment
- intermittent illumination (1 ms light + 12 min dark)e1
- Outcome
- unable to photoreduce DPIP with water as electron donore1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The chloroplasts from wheat leaves developed under intermittent illumination (1 ms light + 12 min dark) were able to photoreduce DPIP with DPC as electron donor but unable to photoreduce DPIP with water as electron donor”
Claim · model-written summary
Exposure of the intermittently illuminated wheat leaves to continuous light rapidly induced Hill activity with water as electron donor.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- continuous lighte2
- Outcome
- Hill activity with water as electron donore2
- Direction
- inducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“On exposure of these leaves to continuous light, the Hill activity with water as electron donor was rapidly induced”
t0“Wheat Leaves”
Claim · model-written summary
The photoactivation was sensitive to DCMU treatment given before exposure to continuous light.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- DCMUe3
- Outcome
- photoactivatione3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The photoactivation was sensitive to the treatment with DCMU prior to exposure to continuous light”
t0“Wheat Leaves”
Claim · model-written summary
The action spectrum for the photoactivation showed a sharp band at 680 nm with a distinct shoulder at 650 nm.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- action spectrum for the photoactivatione4
- Value
- 680 nme4
- Qualifier
- distinct shoulder at 650 nme4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The action spectrum for the photoactivation showed a sharp band at 680 nm with a distinct shoulder at 650 nm”
t0“Wheat Leaves”
Claim · model-written summary
The action spectrum was similar to the absorption spectrum of photosystem 2 particles.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- similar to the absorption spectrume5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“was similar to the absorption spectrum of photosytem‐2 particles”
t0“Wheat Leaves”
Claim · model-written summary
The authors suggest that photosystem 2-driven electron transfer is essential for activating the water-splitting system in chloroplasts of intermittently illuminated leaves.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- activation of the water‐splitting systeme6
- Qualifier
- electron transfer driven by photosystem 2 is essentiale6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“electron transfer driven by photosystem 2 is essential for the activation of the water‐splitting system in the chloroplasts of intermittently illuminated leaves”
t0“Wheat Leaves”
The same questions in other papers
light · molecular: metabolites · Triticum aestivum (wheat)Positive and negative results
13 papers in the same direction as this paper · 15 in the opposite direction
- no effect
- no effect
- negative
25 papers more in this group
See all 29 papers →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.