Abstract
Abstract— Four types of triggered luminescence of isolated lettuce chloroplast (HCl‐induced, methanol‐induced, sodium benzoate‐induced and T‐jump‐induced) were examined after preillumination by a series (from 1 to 10) of short flashes. Oscillations were observed in the luminescence peaks, with a period of four flashes. These oscillations had maxima after the second and the sixth flash, similar to those of delayed light emission. The maxima were shifted forward two flashes by 50 μ M hydroxylamine, as in oxygen evolution, and were abolished by 5 μ M DCMU, as for delayed light. These results may show that the mechanism of triggered luminescence is influenced directly by the oxidation states ( S 1 ) on the donor side of photo‐system II.
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Claims 5
Claim · model-written summary
Triggered luminescence peaks oscillated every four flashes.
- Taxon
- lettuce
Lactuca sativae0 - Organ / stage
- chloroplaste0
- Outcome
- luminescence peakse0
- Value
- four flashese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four types of triggered luminescence of isolated lettuce chloroplast (HCl‐induced, methanol‐induced, sodium benzoate‐induced and T‐jump‐induced) were examined after preillumination by a series (from 1 to 10) of short flashes. Oscillations were observed in the luminescence peaks, with a period of four flashes.”
Claim · model-written summary
Luminescence maxima occurred after flashes two and six.
- Taxon
- lettuceLactuca sativae7
- Outcome
- maximae0
- Value
- second and the sixth flashe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These oscillations had maxima after the second and the sixth flash, similar to those of delayed light emission.”
e7“isolated lettuce chloroplast”
Claim · model-written summary
Hydroxylamine shifted maxima forward two flashes.
- Taxon
- lettuceLactuca sativae7
- Treatment
- 50 μ M hydroxylaminee0
- Outcome
- maximae0
- Direction
- shifted forwarde0
- Value
- two flashese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maxima were shifted forward two flashes by 50 μ M hydroxylamine”
e7“isolated lettuce chloroplast”
Claim · model-written summary
DCMU abolished the maxima.
- Taxon
- lettuceLactuca sativae7
- Treatment
- 5 μ M DCMUe0
- Outcome
- maximae0
- Direction
- abolishede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maxima were shifted forward two flashes by 50 μ M hydroxylamine, as in oxygen evolution, and were abolished by 5 μ M DCMU”
e7“isolated lettuce chloroplast”
Claim · model-written summary
Authors suggest donor-side photosystem II oxidation state directly influences triggered luminescence.
- Taxon
- lettuceLactuca sativae7
- Outcome
- triggered luminescencee0
- Qualifier
- oxidation states ( S 1 ) on the donor side of photo‐system IIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These results may show that the mechanism of triggered luminescence is influenced directly by the oxidation states ( S 1 ) on the donor side of photo‐system II.”
e7“isolated lettuce chloroplast”