[Osmotica accumulation and its role in osmotic adjustment in Thellungiella halophila under salt stress].
Thellungiella halophila was treated with different concentrations of NaCl (0, 50, 100, 200, 300 and 400 mmol/L). Water content, osmotic potential, various organic and inorganic osmotica contents in the leaves and roots were determined and the calculated osmotic potential (COP) of osmotica in the osmotic adjustment was calculated (Figs.1-10 and Table 1). The result showed that water content, osmotic potential decreased with the increase of salinity; Na(+) and Cl(-) were the accumulated inorganic osmotica in roots and leaves; soluble sugar, organic acid and free amino acid were the accumulated organic osmotica in roots; and proline was the accumulated organic osmotica in both root and leaf. Na(+) X-ray microanalysis indicated that vacuole in the cell was the main organelle of accumulation toxic ions (Table 2).
Liu
Ai-Rong
AR
Engneering and Teachology Center for Halphyte, Shandong Normal University, Jinan 250014, China.
Zhao
Ke-Fu
KF
D019607:Brassicaceae / Q000187:drug effects* / Q000378:metabolism / Q000502:physiology; D009997:Osmotic Pressure / Q000187:drug effects; D018515:Plant Leaves / Q000187:drug effects / Q000378:metabolism / Q000502:physiology; D018517:Plant Roots / Q000187:drug effects / Q000378:metabolism / Q000502:physiology; D011392:Proline / Q000378:metabolism; D012965:Sodium Chloride / Q000494:pharmacology*; D014867:Water / Q000378:metabolism
D014867:Water; D012965:Sodium Chloride; D011392:Proline