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231222s2001 xx ||||| 00| ||eng c |
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|a pubmed25n0373.xml
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|a (DE-627)NLM111926874
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|a (NLM)11283172
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Ohtake, N
|e verfasserin
|4 aut
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|a Rapid N transport to pods and seeds in N-deficient soybean plants
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|c 2001
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 30.08.2001
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|a Date Revised 13.12.2023
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|a published: Print
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|a Citation Status MEDLINE
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|a Non-nodulated soybean (Glycine max (L.) Merr.) plants were cultivated hydroponically under N-sufficient (5 mM NaNO(3)) or N-deficient (0.5 mM NaNO(3)) conditions. (13)N- or (15)N- labelled nitrate was fed to the cut end of the stems, and the accumulation of nitrate-derived N in the pods, nodes and stems was compared. Real-time images of (13)N distribution in stems, petioles and pods were obtained using a Positron Emitting Tracer Imaging System for a period of 40 min. The results indicated that the radioactivity in the pods of N-deficient plants was about 10 times higher than that of N-sufficient plants, although radioactivity in the stems and nodes of N-deficient versus N-sufficient plants was not different. A similar result was obtained by supplying (15)NO(3) to cut soybean shoots for 1 h. The fact that the N translocation into the pods from NO(3) fed to the stem base was much faster in N-deficient plants may be due to the strong sink activity of the pods in N-deficient plants. Alternatively, the redistribution of N from the leaves to the pods via the phloem may be accelerated in N-deficient plants. The temporal accumulation of (13)NO(3) in nodes was suggested in both N-sufficient and N-deficient plants. In one (13)NO(3) pulse-chase experiment, radioactivity in the stem declined rapidly after transferring the shoot from the (13)NO(3) solution to non-labelled NO(3); in contrast, the radioactivity in the node declined minimally during the same time period
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|a Comparative Study
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|a Journal Article
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|a Amino Acids
|2 NLM
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|a Nitrates
|2 NLM
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|a Nitrogen Radioisotopes
|2 NLM
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|a Nitrogen
|2 NLM
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|a N762921K75
|2 NLM
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|a Sato, T
|e verfasserin
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|a Fujikake, H
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|a Sueyoshi, K
|e verfasserin
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|a Ohyama, T
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|a Ishioka, N S
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|a Watanabe, S
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|a Osa, A
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|a Sekine, T
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|a Matsuhashi, S
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|a Ito, T
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|a Mizuniwa, C
|e verfasserin
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|a Kume, T
|e verfasserin
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|a Hashimoto, S
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|a Uchida, H
|e verfasserin
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|a Tsuji, A
|e verfasserin
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 52(2001), 355 vom: 02. Feb., Seite 277-83
|w (DE-627)NLM098182706
|x 0022-0957
|7 nnns
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| 773 |
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|g volume:52
|g year:2001
|g number:355
|g day:02
|g month:02
|g pages:277-83
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|a GBV_USEFLAG_A
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|a SYSFLAG_A
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|a GBV_ILN_350
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|a AR
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|d 52
|j 2001
|e 355
|b 02
|c 02
|h 277-83
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