[Effect of NaCl stress on ion compartmentation, photosynthesis and growth of Salicornia bigelovii Torr].
Seedlings of Salicornia bigelovii Torr. were treated with different concentrations of NaCl (0, 100, 300, 600 mmol/L). Ion contents, Na(+) subcelluar localization, photosynthetic rate, ultrastructure of chloroplast and other parameters were measured. The data showed both fresh and dry weight of whole plant of Salicornia bigelovii Torr. under salinity were higher than the control. When NaCl concentration is about 300 mmol/L Salicornia bigelovii Torr. grow strongest. The contents of Na(+) and Cl(-) and c(Na)/c(K) in shoots increased with the salinity. Both Na(+) and Cl(-) were mainly transported to shoots. Ion X-ray microanalysis indicated Na(+) was mainly compartmentalized into vacuoles. Photosynthetic rate increased with the salinity under NaCl 100-300 mmol/L, but declined under NaCl 600 mmol/L. Ultrastructure of chloroplast was destroyed by NaCl 600 mmol/L.
Wang
Li-Yan
LY
Biology Department, Dezhou College, Dezhou 253023, China.
Zhao
Ke-Fu
KF
D002245:Carbon Dioxide / Q000032:analysis; D019663:Chenopodiaceae / Q000502:physiology*; D002712:Chlorides / Q000032:analysis; D002736:Chloroplasts / Q000648:ultrastructure; D010788:Photosynthesis / Q000187:drug effects*; D011188:Potassium / Q000032:analysis; D012964:Sodium / Q000032:analysis; D012965:Sodium Chloride / Q000494:pharmacology*
D002712:Chlorides; D002245:Carbon Dioxide; D012965:Sodium Chloride; D012964:Sodium; D011188:Potassium