In the halotolerant Lobularia maritima (Brassicaceae) salt adaptation correlates with activation of the vacuolar H+-ATPase and the vacuolar Na+/H+ antiporter

Popova OV, Golldack D (2007)
JOURNAL OF PLANT PHYSIOLOGY 164(10): 1278-1288.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
Lobularia thaliana and may be a suitable model to identify molecular mechanisms that regulate tolerance to salt stress in plants. Under the same salt stress conditions, the accumulation of sodium was similar in shoots and roots of Lobularia maritima and Arabidopsis thaliana, whereas the sodium to potassium ratio was less in Lobularia maritima. Aquaporins, the NHX-type Na+/H+ antiporter, and the vacuolar ATPase are well established targets of regulation under salt stress that have a central role in the control of water status and cytoplasmic sodium homeostasis. Therefore, salt-dependent expression of transcripts encoding a PIP2;1 aquaporin, the Na+/H+ antiporter NHX, and V-ATPase subunit E (VHA-E) was characterized in Lobularia maritima. Transcription of LmPIP2;1 was repressed in leaves and roots by treatment with 500 mM NaCl. In contrast, salt stress stimulated the expression of LmNHX1 and LmVHA-E. Cell-specificity of the transcription of LmNHX1 was analyzed by fluorescence in situ PCR in leaf cross sections of Lobularia maritima. Expression of the gene was localized to the phloem and to mesophyll cells. In plants treated with 500 mM NaCl, transcription of LmNHX1 was stimulated in the mesophyll.. The findings indicate divergent transcriptional responses of key mechanisms of salt adaptation in Lobularia maritima and suggest distinct regulation of sodium homeostasis and water flux under salt stress. (C) 2006 Elsevier GmbH. All rights reserved.
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Zeitschriftentitel
JOURNAL OF PLANT PHYSIOLOGY
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164
Zeitschriftennummer
10
Seite
1278-1288
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Popova OV, Golldack D. In the halotolerant Lobularia maritima (Brassicaceae) salt adaptation correlates with activation of the vacuolar H+-ATPase and the vacuolar Na+/H+ antiporter. JOURNAL OF PLANT PHYSIOLOGY. 2007;164(10):1278-1288.
Popova, O. V., & Golldack, D. (2007). In the halotolerant Lobularia maritima (Brassicaceae) salt adaptation correlates with activation of the vacuolar H+-ATPase and the vacuolar Na+/H+ antiporter. JOURNAL OF PLANT PHYSIOLOGY, 164(10), 1278-1288. doi:10.1016/j.jplph.2006.08.011
Popova, O. V., and Golldack, D. (2007). In the halotolerant Lobularia maritima (Brassicaceae) salt adaptation correlates with activation of the vacuolar H+-ATPase and the vacuolar Na+/H+ antiporter. JOURNAL OF PLANT PHYSIOLOGY 164, 1278-1288.
Popova, O.V., & Golldack, D., 2007. In the halotolerant Lobularia maritima (Brassicaceae) salt adaptation correlates with activation of the vacuolar H+-ATPase and the vacuolar Na+/H+ antiporter. JOURNAL OF PLANT PHYSIOLOGY, 164(10), p 1278-1288.
O.V. Popova and D. Golldack, “In the halotolerant Lobularia maritima (Brassicaceae) salt adaptation correlates with activation of the vacuolar H+-ATPase and the vacuolar Na+/H+ antiporter”, JOURNAL OF PLANT PHYSIOLOGY, vol. 164, 2007, pp. 1278-1288.
Popova, O.V., Golldack, D.: In the halotolerant Lobularia maritima (Brassicaceae) salt adaptation correlates with activation of the vacuolar H+-ATPase and the vacuolar Na+/H+ antiporter. JOURNAL OF PLANT PHYSIOLOGY. 164, 1278-1288 (2007).
Popova, Olga V., and Golldack, Dortje. “In the halotolerant Lobularia maritima (Brassicaceae) salt adaptation correlates with activation of the vacuolar H+-ATPase and the vacuolar Na+/H+ antiporter”. JOURNAL OF PLANT PHYSIOLOGY 164.10 (2007): 1278-1288.

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