Competition Between Metal Tolerant and Normal Plant Populations on Normal Soil

Cook, Sheila C. A.; Lefèbvre, Claude; McNeilly, T.

doi:10.2307/2407012

Cited by 48 publications

(36 citation statements)

References 7 publications

(14 reference statements)

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“…An examination of correlations among these values showed that the competitive ability in the control plot and copper tolerance were negatively correlated (r= -0.68, Table 8). This is in accord with the trend reported by Cook et al (1972) in three plant species as well as by Hickey and McNeilly (1975) in four species, and indicates that metal tolerant plants could generally be inferior in competition to normal plants under normal conditions. The competitive ability in the control plot was positively correlated with performance index though insignificantly (r=0.54), and was also correlated with the competitive ability measured in copper-treated plot (r=0.64).…”

Section: Competitive Abilities Of Copper-tolerant and Normal Plantssupporting

confidence: 91%

The impact of copper pollution on barnyard grass populations.

Morishima

Oka

1977

The Japanese journal of genetics

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Section: Competitive Abilities Of Copper-tolerant and Normal Plantssupporting

confidence: 91%

The impact of copper pollution on barnyard grass populations.

Morishima

Oka

1977

The Japanese journal of genetics

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“…As in other cases of lowered fitness for tolerant individuals cultured in clean environments (Cook et al, 1972 ;Cox & Hutchinson, 1981 ;Hickey & McNeilly, 1975 ;Weis & Weis, 1989), the lowered larval growth rate of the iron tolerant population Westerloo could also indicate such costs . However, the larval growth rate of the cadmium tolerant population Neerpelt did not differ from the reference populations .…”

Section: Discussionmentioning

confidence: 95%

Site specific differentiation in metal tolerance in the midge Chironomus riparius (Diptera, Chironomidae)

1995

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Site specific differentiation in metal tolerance in the midge, Chironomus riparius (Diptera: Chironomidae) Postma, J.F.; Kyed, M.; Admiraal, W. Published in: Hydrobiologia DOI:10.1007/BF00033628 Link to publicationCitation for published version (APA): Postma, J. F., Kyed, M., & Admiraal, W. (1995). Site specific differentiation in metal tolerance in the midge, Chironomus riparius (Diptera: Chironomidae). Hydrobiologia, 315, 159-165. DOI: 10.1007/BF00033628 General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. Key words : Chironomus riparius, metal tolerance, Cd, Zn, Fe Abstract Metal tolerance in Chironomus riparius (Diptera) populations from contaminated streams was studied by comparing the effects of cadmium, zinc and iron on first generation laboratory reared midges . First instar larvae were exposed for four days, after which surviving larvae were counted and their length measured . Larvae from two highly polluted sites, kept under control conditions, grew substantially slower than those from other populations . All populations showed the same growth responses to increased zinc concentrations, but differences were found in the responses to both cadmium and iron . Since population differentiation was demonstrated in first generation laboratory animals, it is suggested that the differences between populations of C . riparius have a genetic basis . Download date: 11 May 2018

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“…It is clear from studies of both plants and animals that natural selection for increased tolerances of pollutants in contaminated habitats leads to profound changes in gene pools (30 (31). Other correlated responses, including increased susceptibility to diseases, or, in the case of animals, behavioral changes, are likely, though poorly understood.…”

Section: Copper Mossesmentioning

confidence: 99%

Adaptation to metals in widespread and endemic plants.

Shaw

1994

Environ Health Perspect

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Bryophytes, including the mosses, liverworts, and hornworts, occur in a variety of habitats with high concentrations of metals and have other characteristics that are advantageous for studies of metal tolerance. Mosses may evolve genetically specialized, metal-tolerant races less frequently than flowering plants. Some species of mosses appear to have inherently high levels of metal tolerance even in individuals that have not been subjected to natural selection in contaminated environments. Scopelophila cataractae, one of the so-called copper mosses, not only tolerates extremely high concentrations of metals in its substrates, but requires these substrates for optimum growth. This species should be included in mechanistic studies of tolerance at the cellular and molecular levels. - 274-3474. evolve in just a few generations, and high levels of tolerance tend to be metal-specific. Tolerance mechanisms are varied and the genetic basis for infraspecific differences in tolerance may also be varied. Major genes with modifiers seem to be involved in several species but additional genetic analyses are needed. Tolerance in Widespread MossesMany species of bryophytes are known to tolerate habitats with high concentrations of environmental pollutants (7) and the effects of metals such as copper, zinc, and lead have been most thoroughly studied under experimental conditions. Genetically specialized ecotypes tolerant of copper have been described in the liverwort, Solenostomum crenulatum (8) Other studies on several species of mosses suggest that in addition to, or sometimes instead of, the evolution of genetically adapted ecotypes, inherently broad tolerances permit plants to colonize and thrive in metal-contaminated environments. Shaw (9) studied tolerance of copper, zinc, cadmium, and nickel in plants from eight populations of Funaria hygrometrica. There was strong evidence of ecotypic differentiation for copper tolerance; populations could be clearly segregated as either tolerant or relatively nontolerant. Tolerant plants were restricted to copperenriched sites. These observations provide solid, if indirect, evidence of responses to natural selection for tolerance at contaminated sites.The same populations were genetically variable with regard to cadmium and zinc tolerance, but the relationships between tolerance levels and concentrations of these metals in the natural habitats of populations were less clear than for copper. For cadmium, plants from one population that originated at a cadmium-enriched site were indeed relatively tolerant of this metal, but plants from several other populations growing at sites without cadmium enrichment were also tolerant. Plants that were tolerant of copper also tended to be tolerant of cadmium, even if cadmium was not present in high concentration in their substrates. This observation suggests cotolerances between metals, with obvious implications for mechanistic studies.Plants also exhibited variation in tolerance of zinc, but there appeared to be no relationship between toleran...

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Competition Between Metal Tolerant and Normal Plant Populations on Normal Soil

Cited by 48 publications

References 7 publications

The impact of copper pollution on barnyard grass populations.

The impact of copper pollution on barnyard grass populations.

Site specific differentiation in metal tolerance in the midge Chironomus riparius (Diptera, Chironomidae)

Adaptation to metals in widespread and endemic plants.

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