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Developmental changes and water status in tulip bulbs during storage: Visualization by NMR imaging
Year:
2000
Source of publication :
Journal of Experimental Botany
Authors :
Kamenetsky, Rina
;
.
Zemach, Hanita
;
.
Volume :
51
Co-Authors:
Van Der Toorn, A., Department of Biomolecular Sciences, Wageningen University, Wageningen NMR Centre, Wageningen, Netherlands
Zemah, H., Dept. of Ornamental Horticulture, ARO, Volcani Centre, Bet Dagan, Israel
Van As, H., Department of Biomolecular Sciences, Wageningen University, Wageningen NMR Centre, Wageningen, Netherlands
Bendel, P., Department of Chemical Services, MR Centre, Weizmann Institute of Science, Rehovot, Israel
Kamenetsky, R., Dept. of Ornamental Horticulture, ARO, Volcani Centre, Bet Dagan, Israel
Facilitators :
From page:
1277
To page:
1287
(
Total pages:
11
)
Abstract:
Magnetic Resonance Imaging (MRI) and light and scanning electron microscopy (SEM) were used to follow time-dependent morphological changes and changes in water status of tulip bulbs (Tulipa gesneriana L., cv. 'Apeldoorn') during bulb storage for 12 weeks at 20°C (non-chilled) or 4°C (chilled) and after planting. MR images reflecting the water content, the relaxation times T1 and T2 (or their reciprocal values, the relaxation rates R1 and R2), and the apparent self-diffusion coefficient of water molecules (ADC), were obtained for intact bulbs. After planting, scape elongation and flowering occurred only in chilled bulbs, while elongation in non-chilled bulbs was retarded. Microscopic observations showed different structural components and high heterogeneity of the bulb tissues. MRI revealed the elongation of the flower bud during storage, which was significantly faster in the chilled bulbs. In addition, MRI demonstrated a redistribution of water between different bulb organs, as well as significant differences in the pattern of this redistribution between the chilled and non-chilled bulbs. Generally, R2 relaxation rates became faster in all bulb organs during storage. At the same time, ADC values remained constant in the chilled bulbs, while exhibiting a significant difference.
Note:
Related Files :
geophytes
Growth, Development and Aging
Magnetic Resonance Imaging
Storage
ultrastructure
water
Show More
Related Content
More details
DOI :
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
28480
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:39
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Scientific Publication
Developmental changes and water status in tulip bulbs during storage: Visualization by NMR imaging
51
Van Der Toorn, A., Department of Biomolecular Sciences, Wageningen University, Wageningen NMR Centre, Wageningen, Netherlands
Zemah, H., Dept. of Ornamental Horticulture, ARO, Volcani Centre, Bet Dagan, Israel
Van As, H., Department of Biomolecular Sciences, Wageningen University, Wageningen NMR Centre, Wageningen, Netherlands
Bendel, P., Department of Chemical Services, MR Centre, Weizmann Institute of Science, Rehovot, Israel
Kamenetsky, R., Dept. of Ornamental Horticulture, ARO, Volcani Centre, Bet Dagan, Israel
Developmental changes and water status in tulip bulbs during storage: Visualization by NMR imaging
Magnetic Resonance Imaging (MRI) and light and scanning electron microscopy (SEM) were used to follow time-dependent morphological changes and changes in water status of tulip bulbs (Tulipa gesneriana L., cv. 'Apeldoorn') during bulb storage for 12 weeks at 20°C (non-chilled) or 4°C (chilled) and after planting. MR images reflecting the water content, the relaxation times T1 and T2 (or their reciprocal values, the relaxation rates R1 and R2), and the apparent self-diffusion coefficient of water molecules (ADC), were obtained for intact bulbs. After planting, scape elongation and flowering occurred only in chilled bulbs, while elongation in non-chilled bulbs was retarded. Microscopic observations showed different structural components and high heterogeneity of the bulb tissues. MRI revealed the elongation of the flower bud during storage, which was significantly faster in the chilled bulbs. In addition, MRI demonstrated a redistribution of water between different bulb organs, as well as significant differences in the pattern of this redistribution between the chilled and non-chilled bulbs. Generally, R2 relaxation rates became faster in all bulb organs during storage. At the same time, ADC values remained constant in the chilled bulbs, while exhibiting a significant difference.
Scientific Publication
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