NDLI: A comparison of lead accumulation and tolerance among heavy metal hyperaccumulating and non-hyperaccumulating metallophytes

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A comparison of lead accumulation and tolerance among heavy metal hyperaccumulating and non-hyperaccumulating metallophytes

Content Provider	Semantic Scholar
Author	Mohtadi, Ahmad Ghaderian, Seyed Majid Schat, Henk
Copyright Year	2011
Abstract	AimsThe aim of the present study was to compare lead accumulation and tolerance among heavy metal hyperaccumulating and non-hyperaccumulating metallophytes.MethodsTo this purpose, we compared Pb tolerance and accumulation in hydroponics among calamine and non-calamine populations of Silene vulgaris, Noccaea caerulescens, and Matthiola flavida. We established the effects of Ca on Pb tolerance and accumulation in M. flavida, and measured exchangeable soil Pb and Ca at two calamine sites.ResultsResults revealed that calamine populations of S. vulgaris and N. caerulescens were Pb hypertolerant, but the calamine M. flavida population was not. Pb hyperaccumulation capacity was exclusively found in one of the calamine N. caerulescens populations.Conclusions1) Pb hypertolerance is sometimes lacking in metallophyte populations from strongly Pb-enriched soil, probably due to a relatively high level of exchangeable soil Ca, 2) Ca effectively counteracts Pb uptake and Pb toxicity, 3) The tendency to hyperaccumulate Pb is a population-specific phenomenon in N. caerulescens, 4) Pb hypertolerance in N. caerulescens is not necessarily associated with a tendency to hyperaccumulate Pb, 5) apparent natural Pb hyperaccumulation in M. flavida is not reproducible in hydroponics, probably due to the absence of air-born contamination in laboratory experiments.
Starting Page	267
Ending Page	276
Page Count	10
File Format	PDF HTM / HTML
DOI	10.1007/s11104-011-0994-5
Volume Number	352
Alternate Webpage(s)	http://dare.ubvu.vu.nl/bitstream/handle/1871/51555/chapter%202.pdf?isAllowed=y&sequence=4
Alternate Webpage(s)	https://research.vu.nl/ws/portalfiles/portal/42137728/chapter+2.pdf
Alternate Webpage(s)	https://doi.org/10.1007/s11104-011-0994-5
Journal	Plant and Soil
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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