Tissue and cell injuries caused by chlorine water to Scots pine needles

SUMMARYThe mesophyll ultrastructure of needles of Norway spruce [Pkea abies (L.) Karst.] and Scots pine (Pinus sylvestris L.) seedlings was examined in the course of experimental acid rain treatment lasting three years. The pH 3-treated needle mesophyll cells exhibited thicker granal packing in their chloroplasts than the dry control needles after one season's irrigation. Starch occurrence had decreased due to pH treatment when the whole hardening and rest period was considered. Chloroplast shapes were seen to vary from ellipsoid to irregular, especially in the pH 4 and pH 3-treated needles, due to divisions during hardening. The mean area of mesophyll chloroplasts in the hardened state after three seasons' irrigation was largest (10-3 /(m^) in the pH 3-treated needles, which also contained the smallest number of dark-stained plastoglobuii. Starch occurrence in the hardened mesophyll cells in October reflected disturbances in the hardening processes in the pH 3-treated needles.

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Tissue and cell injuries caused by chlorine water to Scots pine needles

Cited by 3 publications

References 9 publications

Comparative evaluation of the effects of gaseous pollutants, acidic deposition and mineral deficiencies: structural changes in the cells of forest plants

Comparative evaluation of the effects of gaseous pollutants, acidic deposition and mineral deficiencies: structural changes in the cells of forest plants

Effects of long-term exposure to simulated acid rain on conifer needle ultrastructure and hardening status

Structural responses of needles of conifer seedlings to acid rain treatment

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