Abstract
Gravitropic response of Kalanchoë stems was analyzed in terms of instantaneous curvature along the stem, relative elemental growth rates, and epidermal cell dimensions. A bimodal pattern of instantaneous curvature along the stem axis was detected at the end of the gravitropic response. Results of the study revealed hitherto unreported complex spatial and temporal patterns of growth rate oscillations in both gravistimulated and unstimulated control stems. Spatial and temporal growth oscillations, thought to be associated with circumnutation, appear to be overridden by local changes in growth rates in gravistimulated stems. Overall, rate of growth is initially depressed and then stimulated in response to reorientation in the gravitational field. There is a basipetal migration in amplified growth rate on the lower side and a return to oscillatory growth rate on the upper side of gravistimulated stems. Analysis of epidermal cell dimensions reveals that, in general, there is a redistribution of cell elongation potential to the lower side of the gravistimulated stem but no evidence for overall enhancement of cell expansion in response to gravity.
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Claims 9
Claim · model-written summary
A bimodal pattern of instantaneous curvature along the stem axis of Kalanchoë was detected at the end of the gravitropic response.
Verbatim
e1“Gravitropic response of Kalanchoë stems was analyzed in terms of instantaneous curvature along the stem, relative elemental growth rates, and epidermal cell dimensions”
e2“A bimodal pattern of instantaneous curvature along the stem axis was detected at the end of the gravitropic response”
Claim · model-written summary
Growth-rate oscillations in Kalanchoë stems showed complex spatial and temporal patterns in both gravistimulated and unstimulated control stems.
Verbatim
e1“Gravitropic response of Kalanchoë stems was analyzed in terms of instantaneous curvature along the stem, relative elemental growth rates, and epidermal cell dimensions”
e3“Results of the study revealed hitherto unreported complex spatial and temporal patterns of growth rate oscillations in both gravistimulated and unstimulated control stems”
Claim · model-written summary
Spatial and temporal growth oscillations appear to be overridden by local changes in growth rate in gravistimulated Kalanchoë stems.
Verbatim
e1“Gravitropic response of Kalanchoë stems was analyzed in terms of instantaneous curvature along the stem, relative elemental growth rates, and epidermal cell dimensions”
e4“Spatial and temporal growth oscillations, thought to be associated with circumnutation, appear to be overridden by local changes in growth rates in gravistimulated stems”
Claim · model-written summary
Rate of growth in Kalanchoë stems is initially depressed in response to reorientation in the gravitational field.
- Taxon
- Kalanchoëe1
- Treatment
- reorientation in the gravitational fielde5
- Outcome
- rate of growthe5
- Direction
- initially depressede5
Not reportedComparator
Verbatim
e1“Gravitropic response of Kalanchoë stems was analyzed in terms of instantaneous curvature along the stem, relative elemental growth rates, and epidermal cell dimensions”
e5“Overall, rate of growth is initially depressed and then stimulated in response to reorientation in the gravitational field”
Claim · model-written summary
Rate of growth in Kalanchoë stems is then stimulated after reorientation in the gravitational field.
- Taxon
- Kalanchoëe1
- Treatment
- reorientation in the gravitational fielde5
- Outcome
- rate of growthe5
- Direction
- stimulatede5
Not reportedComparator
Verbatim
e1“Gravitropic response of Kalanchoë stems was analyzed in terms of instantaneous curvature along the stem, relative elemental growth rates, and epidermal cell dimensions”
e5“Overall, rate of growth is initially depressed and then stimulated in response to reorientation in the gravitational field”
Claim · model-written summary
Growth rate is amplified on the lower side of gravistimulated Kalanchoë stems, with a basipetal migration.
Verbatim
e1“Gravitropic response of Kalanchoë stems was analyzed in terms of instantaneous curvature along the stem, relative elemental growth rates, and epidermal cell dimensions”
e6“There is a basipetal migration in amplified growth rate on the lower side and a return to oscillatory growth rate on the upper side of gravistimulated stems”
Claim · model-written summary
Growth rate returns to oscillatory on the upper side of gravistimulated Kalanchoë stems.
Verbatim
e1“Gravitropic response of Kalanchoë stems was analyzed in terms of instantaneous curvature along the stem, relative elemental growth rates, and epidermal cell dimensions”
e6“There is a basipetal migration in amplified growth rate on the lower side and a return to oscillatory growth rate on the upper side of gravistimulated stems”
Claim · model-written summary
Cell elongation potential is redistributed to the lower side of gravistimulated Kalanchoë stems.
Verbatim
e1“Gravitropic response of Kalanchoë stems was analyzed in terms of instantaneous curvature along the stem, relative elemental growth rates, and epidermal cell dimensions”
e7“Analysis of epidermal cell dimensions reveals that, in general, there is a redistribution of cell elongation potential to the lower side of the gravistimulated stem but no evidence for overall enhancement of cell expansion in response to gravity”
Claim · model-written summary
No evidence was found for overall enhancement of cell expansion in response to gravity in Kalanchoë stems.
Verbatim
e1“Gravitropic response of Kalanchoë stems was analyzed in terms of instantaneous curvature along the stem, relative elemental growth rates, and epidermal cell dimensions”
e7“Analysis of epidermal cell dimensions reveals that, in general, there is a redistribution of cell elongation potential to the lower side of the gravistimulated stem but no evidence for overall enhancement of cell expansion in response to gravity”