Abstract
In debladed bean petioles calcium and dry weight increased in the abscission zone during an induction period of 14 hr. Before the microscopic appearance of the abscission layer calcium decreased in the abscission zone and increased in the petiole. Dry matter began to decrease in both the abscission zone and the petiole 24 hr after deblading. The first visual change in the cells of the abscission zone was a swelling of the pectic materials of the cell walls. This was followed by breakdown of other cell wall components, i.e., non‐cellulosic polysaccharides and cellulose. The cellulose of the cell walls adjacent and distal to the abscission layer was found to be altered; however, no lignin was present during abscission layer development. The alteration of pectic materials, coupled with breakdown of cell wall components, resulted in the collapse of cells of the abscission layer just prior to separation. Auxin delayed abscission and also delayed the initial increase in calcium, the movement of calcium from the abscission zone to the petiole, and the decrease in dry weight.
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Claims 14
Claim · model-written summary
Calcium increased in the abscission zone of debladed bean petioles during the 14 hr induction period.
Verbatim
e0“In debladed bean petioles calcium and dry weight increased in the abscission zone during an induction period of 14 hr”
t0“THE BEAN”
Claim · model-written summary
Dry weight increased in the abscission zone during the 14 hr induction period.
Verbatim
e0“In debladed bean petioles calcium and dry weight increased in the abscission zone during an induction period of 14 hr”
t0“THE BEAN”
Claim · model-written summary
Before layer appearance, calcium decreased in the abscission zone.
Verbatim
e0“Before the microscopic appearance of the abscission layer calcium decreased in the abscission zone and increased in the petiole”
t0“THE BEAN”
Claim · model-written summary
Before layer appearance, calcium increased in the petiole.
Verbatim
e0“Before the microscopic appearance of the abscission layer calcium decreased in the abscission zone and increased in the petiole”
t0“THE BEAN”
Claim · model-written summary
Dry matter decreased in abscission zone and petiole 24 hr after deblading.
Verbatim
e0“Dry matter began to decrease in both the abscission zone and the petiole 24 hr after deblading”
t0“THE BEAN”
Claim · model-written summary
Pectic material swelling was the first visual change in abscission zone cells.
Verbatim
e0“The first visual change in the cells of the abscission zone was a swelling of the pectic materials of the cell walls”
t0“THE BEAN”
Claim · model-written summary
Non-cellulosic polysaccharides and cellulose subsequently broke down.
Verbatim
e0“This was followed by breakdown of other cell wall components, i.e., non‐cellulosic polysaccharides and cellulose”
t0“THE BEAN”
Claim · model-written summary
Cellulose adjacent and distal to the layer was altered.
Verbatim
e0“The cellulose of the cell walls adjacent and distal to the abscission layer was found to be altered”
t0“THE BEAN”
Claim · model-written summary
No lignin was present during layer development.
Verbatim
e0“no lignin was present during abscission layer development”
t0“THE BEAN”
Claim · model-written summary
Cell wall component changes caused abscission layer cells to collapse before separation.
Verbatim
e0“The alteration of pectic materials, coupled with breakdown of cell wall components, resulted in the collapse of cells of the abscission layer just prior to separation”
t0“THE BEAN”
Claim · model-written summary
Auxin delayed abscission in bean petioles.
Not reportedComparator
Verbatim
e0“Auxin delayed abscission and also delayed the initial increase in calcium, the movement of calcium from the abscission zone to the petiole, and the decrease in dry weight”
t0“THE BEAN”
Claim · model-written summary
Auxin delayed initial increase in calcium in bean petioles.
Not reportedComparator
Verbatim
e0“Auxin delayed abscission and also delayed the initial increase in calcium, the movement of calcium from the abscission zone to the petiole, and the decrease in dry weight”
t0“THE BEAN”
Claim · model-written summary
Auxin delayed movement of calcium from the abscission zone to the petiole in bean petioles.
- Taxon
- BEANt0
- Treatment
- Auxine0
- Outcome
- movement of calcium from the abscission zone to the petiolee0
- Direction
- delayede0
Not reportedComparator
Verbatim
e0“Auxin delayed abscission and also delayed the initial increase in calcium, the movement of calcium from the abscission zone to the petiole, and the decrease in dry weight”
t0“THE BEAN”
Claim · model-written summary
Auxin delayed decrease in dry weight in bean petioles.
Not reportedComparator
Verbatim
e0“Auxin delayed abscission and also delayed the initial increase in calcium, the movement of calcium from the abscission zone to the petiole, and the decrease in dry weight”
t0“THE BEAN”