GROWTH-RESPONSE OF BARLEY ROOTS AS AN INDICATOR OF LEAD-TOXIC EFFECTS

Authors
IVANOV VB BYSTROVA EI OBROUCHEVA NV ANTIPOVA OV SOBOTIK M BERGMANN H
Citation
Vb. Ivanov et al., GROWTH-RESPONSE OF BARLEY ROOTS AS AN INDICATOR OF LEAD-TOXIC EFFECTS, Journal of Applied Botany-Angewandte Botanik, 72(3-4), 1998, pp. 140-143
Citations number
7
Categorie Soggetti
Plant Sciences
Journal title
Journal of Applied Botany-Angewandte Botanik
ISSN journal
09495460 → ACNP
Volume
72
Issue
3-4
Year of publication
1998
Pages
140 - 143
Database
ISI
SICI code
0949-5460(1998)72:3-4<140:GOBRAA>2.0.ZU;2-J
Abstract
The influence of lead nitrate (1 . 10(-5) to 1 . 10(-2)) on seed germi nation and growth of barley (Hordeum vulgare L.) seedlings was studied . No toxic effect of lead on rate of radicle emergence was observed at any concentration applied. Shoot growth was only slightly affected. R oot growth was inhibited completely by 1 . 10(-2) M and partially by 1 . 10(-3) M lead nitrate. The inhibition resulted from nonselective su ppression of both cell division and cell elongation by lead ions. Chan ge in the pattern of root system architecture, i.e. formation of short root system consisting of the same number of roots, can indicate lead toxic concentration.