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. 1999 Nov 7;266(1434):2175-9.
doi: 10.1098/rspb.1999.0905.

Zinc tolerance and hyperaccumulation are genetically independent characters

M R Macnair  1 , V Bert, S B Huitson, P Saumitou-Laprade, D Petit
Affiliations

Zinc tolerance and hyperaccumulation are genetically independent characters

M R Macnair et al. Proc Biol Sci. .

Abstract

The hyperaccumulation of metals by a rare class of plants is a fascinating and little understood phenomenon. No genetic analysis has been possible since no intraspecific variation is known for this character. Here, we report on crosses between the zinc-hyperaccumulating and -tolerant species Arabidopsis halleri and the non-hyperaccumulating, non-tolerant species Arabidopsis petraea. The F2 segregates for both characters and it appears that the two characters are genetically independent. The data for tolerance are consistent with a single major gene for this character (although the number of genes for hyperaccumulation cannot be determined), and is probably not very large.

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References

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