EFFECT OF DIFFERENT NITROGEN-FORMS AND IRON-CHELATES ON THE DEVELOPMENT OF STINGING NETTLE

Authors
Citation
F. Fodor et E. Cseh, EFFECT OF DIFFERENT NITROGEN-FORMS AND IRON-CHELATES ON THE DEVELOPMENT OF STINGING NETTLE, Journal of plant nutrition, 16(11), 1993, pp. 2239-2253
Citations number
32
Categorie Soggetti
Plant Sciences
Journal title
ISSN journal
01904167
Volume
16
Issue
11
Year of publication
1993
Pages
2239 - 2253
Database
ISI
SICI code
0190-4167(1993)16:11<2239:EODNAI>2.0.ZU;2-T
Abstract
The development of stinging nettle (Urtica dioica L.) grown on culture solution containing with either ammonium or nitrate ions, or urea, wa s investigated under iron deficiency conditions, and with added FeEDTA or FeCl3. Both seed-cultured and vegetatively-cultured stinging nettl e plants produced normally developed green shoots when nitrate and 4 m u M FeEDTA or FeCl3 were supplied. Stinging nettle plants were able to utilize Fe-citrate, Fe-ascorbate, and Fe-malate effectively at the sa me concentration as well. When K3Fe(CN)6 was supplied, which is imperm eable to the plasmalemma, and therefore is used to measure the reducti ve capacity of the roots, stinging nettle plants became chlorotic beca use the complex was stable at the pH of the culture solution. Urea did not induce chlorosis but inhibited growth. The plants died when ammon ium was supplied as a sole N source. Applying bicarbonate and ammonium together prevented the plants from dying, but the plants became chlor otic. Total exclusion of iron from the culture solution resulted in ir on-deficiency stress reactions as has been described for other dicotyl edonous plants (Strategy II).