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NICKEL AND ZINC ACCUMULATION BY SPECIES OF THLASPI L., COCHLEARIA L., AND OTHER GENERA OF THE BRASSICACEAE
Author(s) -
Reeves Roger D.
Publication year - 1988
Publication title -
taxon
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 81
eISSN - 1996-8175
pISSN - 0040-0262
DOI - 10.2307/1222140
Subject(s) - brassicaceae , botany , ultramafic rock , biology , zinc , ecology , chemistry , paleontology , organic chemistry
Summary Accumulation of nickel to levels exceeding 1000 μg/g of dry matter, already found in many species of Thlaspi L. from Europe and western U.S.A., is also characteristic of seven species of this genus growing on ultramafic soils in Cyprus, Turkey, northern Syria and Japan. Two Turkish serpentineendemic species of Cochlearia behave in the same way, but many other members of the Brassicaceae from nickel‐rich soils show only slightly elevated nickel levels. Zinc accumulation is known to occur in some European Thlaspi species, in Cochlearia pyrenaica and in Arabidopsis thaliana on zinc‐rich soils. Some Thlaspi species, however, accumulate high levels of zinc even when they are not associated with known zinc mineralisation. Abnormal metal uptake by many species of Thlaspi and Cochlearia is a property of fundamental importance in considerations of the taxonomy and distribution in these genera.