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Publication Type J
Authors Stefani, A., I. Arduini and A. Onnis
Title Juncus-Acutus - Germination and Initial Growth in Presence of Heavy-Metals
Source Annales Botanici Fennici
Author Keywords germination heavy metals initial growth juncus-acutus ultrastructural-changes electron-transport brassica-chinensis solution culture photosystem-ii cadmium copper accumulation toxicity lead
Abstract The effects of Pb(NO3)2, CuSO4 and CdCl2 on the germination and initial growth of Juncus acutus L. (Juncaceae) were studied. The metal content of the seedlings was also measured. The concentrations used were: Pb(NO3)2 from 0.97 to 3.90 x 10(-5) M, and CuSO4 or CdCl2 from 0.12 to 1.95 x 10(-5) M. Germination was not affected by any of the tested metals, whereas the initial growth was strongly inhibited by Pb(NO3)2 concentrations from 1.95 x 10(-5) M upwards, and by CuSO4 and CdCl2 concentrations from 0.12 x 10(-5) M. The root was affected more than the shoot and failed to develop at all the tested concentrations of CuSO4. J. acutus seedlings accumulated 55% to 98% of the metals present in the culture solution. The accumulation of cadmium in the seedlings was higher than that of lead and copper.
Author Address UNIV PISA,DIPARTIMENTO SCI BOT,I-56100 PISA,ITALY. STEFANI, A, SCUOLA SUPER STUDI UNIV & PERFEZIONAMENTO S ANNA,VIA G CARDUCCI 40,I-56100 PISA,ITALY.
Year Published 1991
Volume 28
Issue 1
Beginning Page 37-43
Unique Article Identifier ISI:A1991FN79300003
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