Observation of water and Na+ in tissues of theBruguiera gymnorrhiza by1H-and23Na-NMR imaging

Koizumi, Masaru; Ishida, Noriko; Takagishi, Hidejiro; Shirata, Kazuto; Kano, Hiromi

doi:10.1007/bf02489399

Cited by 9 publications

(2 citation statements)

References 19 publications

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“…So far, very little effort has been made to detect macroscopic sodium pools in higher plants by NMR imaging. In the literature, only one example for 23 Na NMR imaging of a plant sample can be found (11), where a cut piece of a mangrove was investigated.…”

Section: Introductionmentioning

confidence: 99%

23Na and 1H NMR Microimaging of Intact Plants

Olt

Krötz

Komor

et al. 2000

Journal of Magnetic Resonance

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Section: Introductionmentioning

confidence: 99%

23Na and 1H NMR Microimaging of Intact Plants

Olt

Krötz

Komor

et al. 2000

Journal of Magnetic Resonance

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“…Transpiration of water is essential for organizing the system of plants (e.g., transport of water between tissues, uptake of nutrients and other materials, and cooling of the plant body) and is related to photosynthesis [8]. Magnetic resonance imaging (MRI) has been used to investigate water in tree plants [9][10][11][12][13][14]. Based on studies of water in plant tissues using MRI, distribution of water is presented using 1 H-NMR images [15], spatial movement of water is measured as diffusion coefficients [16][17], and flowing water and flow velocity are examined by dynamic imaging methods [18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Seasonal Changes in the Dynamic State of Water for Excised Cherry Branches (Prunus lannesiana) Observed Using Dedicated Micro-Magnetic Resonance Imaging

Kano¹,

Koizumi

2014

PLANT

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Seasonal changes in the dynamic state of water for cherry (Prunus lannesiana), a deciduous broad-leaved tree, were studied by combined k-space and q-space imaging using dedicated magnetic resonance imaging (MRI) with a 1.0-T permanent magnet. Water amounts, diffusion coefficients and transpiration were examined for excised branches cut from a tree with and without weak light (100-140 µmol m -2 s -1 ) throughout the year. The water amount in the cambium was large in spring and summer, decreased in autumn, and decreased further in winter. There were three components in the diffusion coefficient of the branch. The second component of the diffusion coefficient ascribed to the cambium did not fluctuate notably throughout the year, despite marked alternation in water amounts. However, diffusion coefficients in the secondary xylem, the primary component, were elevated in summer and decreased in winter. Upward water flow was restricted in the secondary xylem, and the positions where large flow was detected coincided with places exhibiting high diffusion coefficients and the arrangements of vessels. Total transpiration exhibited a tendency similar to that of the diffusion coefficients; however, total transpiration declined to zero when the plant had no leaf, whereas the diffusion coefficient decreased to 60 % of the maximum but did not decrease further. Light-enhanced transpiration related to potential photosynthetic activity increased in spring as the leaves sprouted and grew, considerably decreased in summer, decreased to one third of the maximum in autumn, and was not detected in winter. Measurement of the dynamic state of water for the excised branches will provide useful information for better understanding of the phenological changes of tree physiology.

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The NMR Microscope: a Unique and Promising Tool for Plant Science

Ishida

2000

Annals of Botany

103

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Observation of water and Na+ in tissues of theBruguiera gymnorrhiza by1H-and23Na-NMR imaging

Cited by 9 publications

References 19 publications

23Na and 1H NMR Microimaging of Intact Plants

23Na and 1H NMR Microimaging of Intact Plants

Seasonal Changes in the Dynamic State of Water for Excised Cherry Branches (Prunus lannesiana) Observed Using Dedicated Micro-Magnetic Resonance Imaging

The NMR Microscope: a Unique and Promising Tool for Plant Science

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