NDLI: Selection and Characterization of Nickel-Tolerant Tobacco Cells

Content Provider	Springer Nature Link
Author	Nakazawa, R. Kameda, Y. Ito, T. Ogita, Y. Michihata, R. Takenaga, H.
Copyright Year	2004
Abstract	Tobacco (Nicotiana tabacum L. cv. BY-2) cell lines tolerant to 700 μM Ni in which unselected cells can not grow, were selected. The Ni-tolerant cells were also more tolerant to Co, but not to Cd than unselected cells. Ni concentrations in Ni-tolerant cells were always higher than those in medium. Since buthionine sulfoximine did not affect their Ni-tolerance, it is suggested that phytochelatins are not involved in Ni-tolerance of Ni-tolerant cells. On the other hand, histidine contents in Ni-tolerant and unselected cells, which were treated with Ni, were higher that those treated without Ni, and the degree of the elevation of histidine contents by Ni-treatment was higher in Ni-tolerant cells than in unselected cells. Additionally, exogenous histidine reduced the inhibitory effect of Ni on the growth of unselected cells. In addition, the cells that were tolerant to histidine-analogue, had higher contents of histidine and Ni-tolerance. These results suggest that histidine is involved in Ni-tolerance and the detoxification of Ni in symplast in Ni-tolerant cells.
Starting Page	497
Ending Page	502
Page Count	6
File Format	PDF
ISSN	00063134
Journal	Biologia Plantarum
Volume Number	48
Issue Number	4
e-ISSN	15738264
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2004-01-01
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Plant Science Horticulture

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