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Heavy metal toxicity and iron chlorosis

Journal Article:

Abstract

The toxicity of copper, nickel, cobalt, zinc, chromium, and manganese to mustard was studied in water culture, utilizing either the ionic form or the EDTA chelate of the metal in the presence of either ferric chloride or ferric EDTA. In presence of ferric chloride the activity of the metals in producing chlorosis was as given above, i.e. in the order of stability of their chelates. In the presence of ferric versenate, toxicity of the ionic metal was much reduced. The metal chelates gave very little indication of toxicity with either form of iron. It was found that the ratio of total phosphorus to total iron was higher in chlorotic plants than in green plants, irrespective of which metal was causing the toxicity. Copper could be demonstrated in the phloem cells of the root using biscyclohexanone-oxalydihydrazone as histochemical reagent. It is postulated that transport of iron probably takes place in the phloem as an active process. It would appear that as a major part of the iron in plant cells is attached to nucleo- or phospho-proteins, the heavy metals must be similarly attached to phospho-proteins.
Authors:
Publication Date:
Jan 01, 1956
Product Type:
Journal Article
Reference Number:
EDB-86-027426
Resource Relation:
Journal Name: Ann. Bot. (London); (United Kingdom); Journal Volume: 20:77
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; CHROMIUM; TISSUE DISTRIBUTION; TOXICITY; COBALT; COPPER; LEAVES; CHLOROSIS; MANGANESE; NICKEL; ZINC; BRASSICA; CHELATING AGENTS; EDTA; EXPERIMENTAL DATA; IRON; PHOSPHORUS; ROOTS; AMINO ACIDS; CARBOXYLIC ACIDS; DATA; DISTRIBUTION; ELEMENTS; FOOD; INFORMATION; METALS; NONMETALS; NUMERICAL DATA; ORGANIC ACIDS; ORGANIC COMPOUNDS; PATHOLOGICAL CHANGES; PLANTS; TRANSITION ELEMENTS; VEGETABLES; 560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)
OSTI ID:
6372178
Research Organizations:
Macaulay Institute of Soil Research, Aberdeen, Scotland
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: ANBOA
Submitting Site:
HEDB
Size:
Pages: 133-141
Announcement Date:

Journal Article:

Citation Formats

DeKock, P C. Heavy metal toxicity and iron chlorosis. United Kingdom: N. p., 1956. Web.
DeKock, P C. Heavy metal toxicity and iron chlorosis. United Kingdom.
DeKock, P C. 1956. "Heavy metal toxicity and iron chlorosis." United Kingdom.
@misc{etde_6372178,
title = {Heavy metal toxicity and iron chlorosis}
author = {DeKock, P C}
abstractNote = {The toxicity of copper, nickel, cobalt, zinc, chromium, and manganese to mustard was studied in water culture, utilizing either the ionic form or the EDTA chelate of the metal in the presence of either ferric chloride or ferric EDTA. In presence of ferric chloride the activity of the metals in producing chlorosis was as given above, i.e. in the order of stability of their chelates. In the presence of ferric versenate, toxicity of the ionic metal was much reduced. The metal chelates gave very little indication of toxicity with either form of iron. It was found that the ratio of total phosphorus to total iron was higher in chlorotic plants than in green plants, irrespective of which metal was causing the toxicity. Copper could be demonstrated in the phloem cells of the root using biscyclohexanone-oxalydihydrazone as histochemical reagent. It is postulated that transport of iron probably takes place in the phloem as an active process. It would appear that as a major part of the iron in plant cells is attached to nucleo- or phospho-proteins, the heavy metals must be similarly attached to phospho-proteins.}
journal = {Ann. Bot. (London); (United Kingdom)}
volume = {20:77}
journal type = {AC}
place = {United Kingdom}
year = {1956}
month = {Jan}
}