Potential for the evolution of heavy metal tolerance in Bryum argenteum, a moss. I. Variation within and among populations
- Ithaca College, NY (USA)
Bryum argenteum frequently occurs in urban environments and therefore appears to have the ability to tolerate high levels of such atmospheric pollutants as lead. The presence of genetic variation for tolerance to lead was assessed within and among three populations of this species from Ithaca, New York state. Plants from these populations contained extremely different concentrations of lead and other metals, but there was little or no variation in metal tolerance among the populations. There were, however, significant differences in general vigor (growth rates across all experimental treatments) among populations. Moreover, the rural and suburban populations contained high levels of variation in vigor among haploid-sib families (families of gametophytes derived from different sporophytes). The urban population, in contrast, contained conspicuously less variation than the other two.
- OSTI ID:
- 6943014
- Journal Information:
- Bryologist; (USA), Vol. 92:1; ISSN 0007-2745
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
BIOLOGICAL INDICATORS
LEAD
TOXICITY
MOSSES
SENSITIVITY
GENETIC VARIABILITY
NEW YORK
PLANT GROWTH
RURAL AREAS
URBAN AREAS
BIOLOGICAL VARIABILITY
BRYOPHYTA
ELEMENTS
FEDERAL REGION II
GROWTH
METALS
NORTH AMERICA
PLANTS
POLLUTION
USA
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
560300 - Chemicals Metabolism & Toxicology