Figure 6
From: Accumulation and cellular toxicity of aluminum in seedling of Pinus massoniana
Effects of Al on NORs in root tip cells of P. massoniana during mitosis (Black arrowheads show NORs; White arrowheads show silver stained materials). A-I. Normal mitotic process. A-C. Showing decondensed chromatin fibers around the nucleoli. D. Showing decreased nucleoli in size. E. Showing filamentous NORs at late prophase. F. Showing NORs on metaphase chromosome. G. Showing NORs migration with the chromosomes to the poles at anaphase. H-L. Mitotic process under Al stress. H-J. Nucleoli still existed after the treatment with Al during metaphase (H: 10-5 M Al, 72 h; I: 10-4 M Al, 24 h; J: 10-3 M Al, 24 h ). K-L. Showing some small NORs localized on sticky chromsomes and similar silver stained particles distributed in cytoplasm (K: 10-4 M Al, 72 h; L: 10-3 M Al, 72 h). Scale bar = 10 μm.