Boron uptake by sunflower, squash and cultured tobacco cells
In: Physiologia Plantarum, Jg. 91 (1994), Heft 3, S. 435-441
academicJournal
Zugriff:
Boron uptake was studied in sunflower ( Helianthus annuus cv. Ha301), squash ( Cucurbita pepo cv. Early prolific straight neck) and cultured tobacco ( Nicotiana tobacum L. cv. TXD Monsanto cell line) cells with the use of stable B isotopes and inductively coupled plasma mass spectrometry. Boron uptake increased linearly with increasing B concentrations in the uptake medium, did not exhibit multiphasic kinetics and was not saturable over a wide concentration range. The addition of respiratory inhibitors to the uptake solution or exposure to low (2°C) or high (42°C) temperatures did not inhibit B uptake. The majority of the B within the plants, including recently absorbed B, was present in a nonexchangeable form and could not be removed by repeated rinsing with deionized water or exchange with B isotope. These results demonstrate that in these species B uptake is a passive, nonmetabolic process and that the formation of nonexchangeable B‐complexes within the cytoplasm and cell wall is a key factor in determining the uptake of B by plants.
Titel: |
Boron uptake by sunflower, squash and cultured tobacco cells
|
---|---|
Autor/in / Beteiligte Person: | Brown, Patrick H. ; Hu, Hening |
Link: | |
Zeitschrift: | Physiologia Plantarum, Jg. 91 (1994), Heft 3, S. 435-441 |
Veröffentlichung: | Wiley, 1994 |
Medientyp: | academicJournal |
ISSN: | 0031-9317 |
DOI: | 10.1111/j.1399-3054.1994.tb02971.x |
Schlagwort: |
|
Sonstiges: |
|