Effect of sodium fluoride on the root apex border cells in one-day-old wheat seedlings
2009
Bozhkov, A. I | Kuznetsova, Yu. A | Menzyanova, N. G
The number of border (scaled off) cells (BCs) was determined in the root apex of 1-day-old wheat (Triticum aestivum L.) seedlings. Microscopic examination of cytological root preparations showed that in 24 h the number of BCs in the gel sheath of the root apex was 30-40 per root. When the gel sheath was preparatively removed, their number per root increased twice. It is assumed that the subpopulation of BCs directly associated with the root apex differs from the subpopulation of BCs freely accommodated in the gel sheath. The number of BCs was the same in the roots with low and high natural growth rates. NaF (1-20 mM) suppressed growth of wheat seedling roots; the viscosity of the gel sheath increased (by 3-5 times), and the number of BC rose with the most pronounced increment in the size of the BC subpopulation directly associated with the root apex.
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