PMID: 16667148Nov 1, 1989Paper

Stable NaCl Tolerance of Tobacco Cells Is Associated with Enhanced Accumulation of Osmotin

Plant Physiology
P C LarosaR A Bressan

Abstract

Osmotin is a major protein which accumulates in tobacco cells (Nicotiana tabacum L. var Wisconsin 38) adapted to low water potentials. Quantitation of osmotin levels by immunoblots indicated that cells adapted to 428 millimolar NaCl contained 4 to 30 times the level of osmotin found in unadapted cells, depending on the stage of growth. Unadapted cells accumulated low levels of osmotin with apparent isoelectric points, (pl) of 7.8 and >8.2. Upon transfer of NaCl-adapted cells to medium without NaCl and subsequent growth for many cell generations, the amount of osmotin declined gradually to a level intermediate between that found in adapted and unadapted cells. NaCl-adapted cells grown in the absence of NaCl accumulated both pl forms; however, the form accumulated by cells adapted to NaCl (pl > 8.2) was most abundant. Adapted cells grown in the absence of NaCl exhibited absolute growth rates and NaCl tolerance levels which were intermediate to those of NaCl-adapted and unadapted cells. The association between osmotin accumulation and stable NaCl tolerance indicates that cells with a stable genetic change affecting the accumulation of osmotin are selected during prolonged exposure to high levels of NaCl. This stable alteration in ...Continue Reading

References

Jan 1, 1987·Proceedings of the National Academy of Sciences of the United States of America·S Ramagopal
Feb 1, 1987·Proceedings of the National Academy of Sciences of the United States of America·N K SinghR A Bressan
Sep 1, 1985·Plant Physiology·M L BinzelR A Bressan
Sep 1, 1985·Plant Physiology·N K SinghR A Bressan
Sep 1, 1985·Plant Physiology·P C LarosaR A Bressan
Mar 1, 1987·Plant Physiology·W J Hurkman, C K Tanaka
Aug 1, 1987·Plant Physiology·M L BinzelR A Bressan
Feb 1, 1988·Plant Physiology·M L BinzelP M Hasegawa

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Citations

Sep 1, 1992·Plant Physiology·P C LarosaR A Bressan
May 1, 1992·Plant Physiology·A M CasasP M Hasegawa
Mar 13, 2008·Microbial Cell Factories·Magnólia de A CamposMaria F Grossi de Sá
Aug 28, 2003·The Plant Journal : for Cell and Molecular Biology·Paola VeroneseRay A Bressan
Apr 9, 2015·Frontiers in Plant Science·S Anil KumarP B Kavi Kishor
Oct 31, 2019·Plant Physiology and Biochemistry : PPB·Jinhui LinShuilin He
Aug 8, 2021·International Journal of Molecular Sciences·Eun-Joo Park, Tae-Houn Kim

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