Abstract
Detached etiolated wheat (Triticum aestivum L. cv. Chris) leaves accumulated plastid pigments at a high rate, developed chloroplasts with stacked thylakoids, and stored plastid starch when wetted on filter paper in light. A moderate water deficit of - 10 bars markedly reduced the accumulation of chlorophyll and carotenoids in the 8-day-old detached leaves during greening. delta-Aminolevulinic acid treatment of stressed leaf segments resulted in slightly increased pigment accumulations but benzyladenine application restored plastid pigment formation in stressed tissue to within 15% of the pigment content of the nonstressed detached leaves. The addition of delta-aminolevulinic acid to benzyladenine-treated stressed leaf segments improved both chlorophyll and carotenoid formation to nearly the amounts found in nonstressed leaf tissue. Stressed leaf sections developed plastids that were small, lacked starch, contained few thylakoids per granum, and possessed dilated thylakoids. Benzyladenine application to the stressed leaf segments did not restore normal plastid stacking but benzyladenine induced the formation of extended intergranal lamellae and stimulated pigment accumulations in both stressed and nonstressed detached leaves. Starch was absent in plastids of benzyladeninetreated leaf sections.
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Claims 10
Claim · model-written summary
Wetted etiolated wheat leaves accumulated pigments, developed stacked chloroplasts and stored plastid starch in light.
- Taxon
- wheat
Triticum aestivume0 - Material
- cv. Chrise0
- Organ / stage
- leavese0
- Outcome
- accumulated plastid pigments at a high rate, developed chloroplasts with stacked thylakoids, and stored plastid starche0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Detached etiolated wheat (Triticum aestivum L. cv. Chris) leaves accumulated plastid pigments at a high rate, developed chloroplasts with stacked thylakoids, and stored plastid starch when wetted on filter paper in light”
Claim · model-written summary
Moderate water deficit reduced chlorophyll and carotenoid accumulation in detached leaves.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- water deficit of - 10 barse0
- Outcome
- accumulation of chlorophyll and carotenoidse0
- Direction
- reducede0
- Value
- - 10 barse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A moderate water deficit of - 10 bars markedly reduced the accumulation of chlorophyll and carotenoids in the 8-day-old detached leaves during greening”
t0“Wheat Leaves”
Claim · model-written summary
Delta-aminolevulinic acid slightly increased pigment accumulation in stressed leaves.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- delta-Aminolevulinic acid treatmente0
- Outcome
- pigment accumulationse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“delta-Aminolevulinic acid treatment of stressed leaf segments resulted in slightly increased pigment accumulations”
t0“Wheat Leaves”
Claim · model-written summary
Benzyladenine restored pigment formation in stressed tissue to within 15% of nonstressed leaves.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- benzyladenine applicatione0
- Outcome
- plastid pigment formatione0
- Direction
- restorede0
- Value
- 15%e0
- Comparator
- nonstressed detached leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“benzyladenine application restored plastid pigment formation in stressed tissue to within 15% of the pigment content of the nonstressed detached leaves”
t0“Wheat Leaves”
Claim · model-written summary
Adding delta-aminolevulinic acid to benzyladenine improved chlorophyll and carotenoid formation nearly to nonstressed levels.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- addition of delta-aminolevulinic acid to benzyladenine-treated stressed leaf segmentse0
- Outcome
- chlorophyll and carotenoid formatione0
- Direction
- improvede0
- Comparator
- nonstressed leaf tissuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of delta-aminolevulinic acid to benzyladenine-treated stressed leaf segments improved both chlorophyll and carotenoid formation to nearly the amounts found in nonstressed leaf tissue”
t0“Wheat Leaves”
Claim · model-written summary
Stressed leaves formed small starchless plastids with few and dilated thylakoids.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- plastids that were small, lacked starch, contained few thylakoids per granum, and possessed dilated thylakoidse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stressed leaf sections developed plastids that were small, lacked starch, contained few thylakoids per granum, and possessed dilated thylakoids”
t0“Wheat Leaves”
Claim · model-written summary
Benzyladenine did not restore normal plastid stacking.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Benzyladenine applicatione0
- Outcome
- normal plastid stackinge0
- Direction
- did not restoree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Benzyladenine application to the stressed leaf segments did not restore normal plastid stacking”
t0“Wheat Leaves”
Claim · model-written summary
Benzyladenine induced extended intergranal lamellae.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- benzyladeninee0
- Outcome
- formation of extended intergranal lamellaee0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“benzyladenine induced the formation of extended intergranal lamellae”
t0“Wheat Leaves”
Claim · model-written summary
Benzyladenine increased pigment accumulation in stressed and nonstressed leaves.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- benzyladeninee2
- Outcome
- pigment accumulationse0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stimulated pigment accumulations in both stressed and nonstressed detached leaves”
t0“Wheat Leaves”
e2“benzyladenine application restored plastid pigment formation”
Claim · model-written summary
Plastid starch was absent in benzyladenine-treated leaves.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- Starch was absent in plastidse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Starch was absent in plastids of benzyladeninetreated leaf sections”
t0“Wheat Leaves”
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