Abstract
Intact wheat seedlings (Triticum aestivum L.) were induced to senesce by placing them in the dark and at various stages of senescence were placed back in the light and their recoverability observed. Seedlings demonstrated complete recovery of chlorophyll, protein, and rate of photosynthesis after 2 days in the dark, but were unable to recover fully after 4 days. This suggests the onset of an irreversible stage in senescence by day 4. Foliar applied cytokinins delayed senescence, and zeatin at 0.1 mm delayed the onset of the irreversible stage for 6 days. In addition to delaying the loss of total soluble protein, zeatin maintained the net protein recovery capacity of the tissue. Control seedlings, however, lost their potential for net protein recovery at a rate similar to their loss of total soluble protein. Treatment with zeatin had no apparent effect on dark respiration during senescence, and although treatment did delay the loss of membrane permeability to substrate, the change in permeability occurred too late to have a causal role in senescence.
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Claims 8
Claim · model-written summary
Wheat seedlings fully recovered chlorophyll, protein and photosynthesis after two days in darkness.
- Taxon
- Wheat
Triticum aestivumt0 - Treatment
- 2 days in the darke0
- Outcome
- chlorophyll, protein, and rate of photosynthesise0
- Direction
- complete recoverye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedlings demonstrated complete recovery of chlorophyll, protein, and rate of photosynthesis after 2 days in the dark”
t0“Wheat Seedlings”
Claim · model-written summary
Wheat seedlings could not recover fully after four days in darkness.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- 4 dayse0
- Outcome
- recover fullye0
- Direction
- unablee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“were unable to recover fully after 4 days”
t0“Wheat Seedlings”
Claim · model-written summary
Foliar cytokinins delayed wheat seedling senescence.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Foliar applied cytokininse0
- Outcome
- senescencee0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar applied cytokinins delayed senescence”
t0“Wheat Seedlings”
Claim · model-written summary
Zeatin at 0.1 mm delayed the irreversible senescence stage for six days.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- zeatin at 0.1 mme0
- Outcome
- onset of the irreversible stagee0
- Direction
- delayede0
- Value
- 6 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“zeatin at 0.1 mm delayed the onset of the irreversible stage for 6 days”
t0“Wheat Seedlings”
Claim · model-written summary
Zeatin delayed total soluble protein loss and maintained protein recovery capacity.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- zeatine0
- Outcome
- net protein recovery capacitye0
- Direction
- maintainede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“zeatin maintained the net protein recovery capacity of the tissue”
e1“delaying the loss of total soluble protein”
t0“Wheat Seedlings”
Claim · model-written summary
Control seedlings lost net protein recovery capacity at a rate similar to soluble protein loss.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- potential for net protein recoverye0
- Direction
- loste0
- Comparator
- loss of total soluble proteine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Control seedlings, however, lost their potential for net protein recovery at a rate similar to their loss of total soluble protein”
t0“Wheat Seedlings”
Claim · model-written summary
Zeatin had no apparent effect on dark respiration during senescence.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- zeatine0
- Outcome
- dark respiratione0
- Direction
- no apparent effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment with zeatin had no apparent effect on dark respiration during senescence”
t0“Wheat Seedlings”
Claim · model-written summary
Zeatin delayed loss of membrane permeability to substrate.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- zeatine1
- Outcome
- membrane permeability to substratee0
- Direction
- delaye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment did delay the loss of membrane permeability to substrate”
e1“Treatment with zeatin”
t0“Wheat Seedlings”
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