Abstract
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 V(1) 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.
Publication types
-
Research Support, Non-U.S. Gov't
MeSH terms
-
Biomass
-
Blotting, Western
-
Chenopodiaceae / drug effects*
-
Chenopodiaceae / enzymology*
-
Chlorides / metabolism
-
Cross Reactions / drug effects
-
Hydrolysis / drug effects
-
Organ Specificity / drug effects
-
Plant Roots / cytology
-
Plant Roots / drug effects
-
Plant Roots / enzymology*
-
Plant Roots / growth & development
-
Plant Shoots / cytology
-
Plant Shoots / drug effects
-
Plant Shoots / enzymology*
-
Plant Shoots / growth & development
-
Protein Subunits / immunology
-
Salt-Tolerant Plants / drug effects
-
Salt-Tolerant Plants / enzymology*
-
Sodium / metabolism
-
Sodium Chloride / pharmacology*
-
Vacuolar Proton-Translocating ATPases / immunology
-
Vacuolar Proton-Translocating ATPases / metabolism*
-
Vacuoles / drug effects
-
Vacuoles / enzymology
Substances
-
Chlorides
-
Protein Subunits
-
Sodium Chloride
-
Sodium
-
Vacuolar Proton-Translocating ATPases