Premium
EFFECT OF CALCIUM ON THE UPTAKE AND TOXICITY OF LEAD IN HORDEUM VULGARE L. AND FESTUCA OVINA L.
Author(s) -
GARLAND C. J.,
WILKINS D. A.
Publication year - 1981
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1981.tb03229.x
Subject(s) - calcium , calcium nitrate , festuca rubra , hordeum vulgare , lead (geology) , agronomy , poaceae , festuca , chemistry , biology , botany , horticulture , paleontology , organic chemistry
SUMMARY The effect of increasing calcium concentration on root growth and the uptake of lead from solutions of lead nitrate, by both barley seedlings and lead‐tolerant and non‐tolerant plants of Festuca ovina , are described. Lead uptake into the roots of all plants declined linearly with the logarithm of increasing calcium nitrate concentration up to 12.72 mM. Root extension growth in each lead solution increased as calcium concentration was raised, and this increase was greater than could be accounted for by the diminishing lead uptake; a second influence of calcium may thus be indicated. The regression of root growth, or tolerance index, on root lead content may be a useful indicator of sensitivity to the metal.