Rapid increase of vacuolar volume in response to salt stress.
Suspension-cultured cells of mangrove [Bruguiera sexangula (Lour.) Poir.] showed a rapid increase in vacuolar volume under salt stress, although there was no change in the cell volume. The rapid increase in the vacuolar volume was an active process, which followed the activation of the tonoplast H(+)-ATPase and the vacuolar acid phosphatase. The same phenomenon was observed in barley (Hordeum vulgare L. cv. Doriru) root meristematic cells under salt stress but not in pea ( Pisum sativum L.). Increases in vacuolar volume could potentially protect the cytoplasm by decreasing the cytoplasmic volume during the initial phases of salt stress.
Mimura
Tetsuro
T
Department of Biological Science, Faculty of Science, Nara-Women's University, Kitauoyanishimachi, Nara 630-8506, Japan. mimura@cc.nara-wu.ac.jp
Kura-Hotta
Mariko
M
Tsujimura
Tomoko
T
Ohnishi
Miwa
M
Miura
Makiko
M
Okazaki
Yoshiji
Y
Mimura
Mari
M
Maeshima
Masayoshi
M
Washitani-Nemoto
Setsuko
S
D000135:Acid Phosphatase / Q000378:metabolism; D000222:Adaptation, Physiological / Q000187:drug effects / Q000502:physiology*; D032407:Avicennia / Q000187:drug effects / Q000502:physiology; D002478:Cells, Cultured; D001467:Hordeum / Q000187:drug effects / Q000502:physiology; D009997:Osmotic Pressure / Q000187:drug effects; D018532:Pisum sativum / Q000187:drug effects / Q000502:physiology; D063245:Plant Development; D010944:Plants / Q000187:drug effects*; D012965:Sodium Chloride / Q000494:pharmacology*; D025262:Vacuolar Proton-Translocating ATPases / Q000378:metabolism; D014617:Vacuoles / Q000187:drug effects / Q000201:enzymology / Q000502:physiology*
D012965:Sodium Chloride; D000135:Acid Phosphatase; D025262:Vacuolar Proton-Translocating ATPases