Na+ compartmentation strategy of Chinese cabbage in response to salt stress
Copyright © 2019 Elsevier Masson SAS. All rights reserved.
| Veröffentlicht in: | Plant physiology and biochemistry : PPB. - 1991. - 140(2019) vom: 26. Juli, Seite 151-157 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2019
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| Zugriff auf das übergeordnete Werk: | Plant physiology and biochemistry : PPB |
| Schlagworte: | Journal Article Chinese cabbage Gene expression Na(+) compartmentation Na(+)/H(+) antiporter (NHX) Salt-tolerance Plant Proteins Sodium 9NEZ333N27 |
| Zusammenfassung: | Copyright © 2019 Elsevier Masson SAS. All rights reserved. Na+/H+ antiporter (NHX), responsible for counter-transport of Na+ and H+ across membranes (Na+ compartmentalization), plays a central role in plant salt-tolerance. In order to explore the Na+ compartmentalization modes and salt tolerance strategy in Chinese cabbage (Brassica rapa L. ssp. pekinensis), the seedlings of a salt-susceptible cabbage cultivar (Kuaicai 38) and a salt-tolerant cabbage cultivar (Qingmaye) were exposed to 100-400 mM NaCl for 30 days. Both of these cultivars showed a gradual decrease in fresh weight and water content and an increase in root-shoot ratio with the increasing NaCl-treatment concentration. The distribution of Na+ in these two cultivars was similar, with the green leaves showing the highest Na+ content, followed by inflated midribs, stems, and roots. The Na+ concentration in the apoplast was higher than that in the protoplast of the leaves. The expression levels of BrNHX1-1 and BrNHX1-2 in the leaves of Qingmaye were the highest among all BrNHX members, and increased after salt treatment. However, only BrNHX1-1 was expressed in Kuaicai 38. These results indicate that Na+ compartmentation into vacuoles is the major salt-adaptation strategy in Chinese cabbage. Coordinated overexpression of BrNHX1-1 and BrNHX1-2 may confer greater salt-tolerance for Chinese cabbage |
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| Beschreibung: | Date Completed 10.06.2019 Date Revised 30.09.2020 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1873-2690 |
| DOI: | 10.1016/j.plaphy.2019.05.001 |