Journal
JOURNAL OF INTEGRATIVE PLANT BIOLOGY
Volume 52, Issue 3, Pages 308-314Publisher
WILEY-BLACKWELL
DOI: 10.1111/j.1744-7909.2010.00895.x
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Funding
- National Natural Science Research Foundation of China [30670177]
- Hi-Tech Research and Development (863) Program of China [2007AA091701]
- Specialized Research Fund for the Doctoral Program of Higher Education [20050445003]
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Suaeda salsa L. is a halophytic species that is well adapted to high salinity. In order to understand its salt tolerance mechanism, we examined the growth and vacuolar H+-ATPase (V-ATPase) response to NaCl within the shoots and roots. The growth of shoots, but not roots, was dramatically stimulated by NaCl. Cl- and Na+ were mainly accumulated in shoots. V-ATPase activity was significantly increased by NaCl in roots and especially in shoots. Interestingly, antisera ATP95 and ATP88b detected three Vi subunits (66, 55 and 36 KDa) of V-ATPase only in shoots, while an 18 kDa V-0 subunit of V-ATPase was detected by both antisera in shoots and roots. It suggested that the tissue-specific characteristics of V-ATPase were related to the different patterns of growth and ion accumulation in shoots and roots of S. salsa.
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