Does copper tolerance give cadmium tolerance in Mimulus guttatus

Tilstone, Gavin H.; Macnair, Mark R.; Smith, Suzanne

doi:10.1038/hdy.1997.183

Cited by 9 publications

(2 citation statements)

References 28 publications

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“…[ 45 ], after examining the contribution of metallothioneins on metal tolerance of Arabidopsis , observed that different types and different conjugations of metallothioneins are responsible for conferring tolerance to different metals in this species. Also, Tilstone and Macnair [ 46 ], [ 47 ], after studying several tolerant and non-tolerant populations of the plant Mimulus guttatus found that tolerance to many metals observed in this plant was due to multiple metal tolerance, which was caused by independent genetic mechanisms for specific metals.…”

Section: Discussionmentioning

confidence: 99%

Multiple Stressor Differential Tolerances: Possible Implications at the Population Level

et al. 2016

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The probability of the most sensitive genotypes being eliminated from a population due to a contaminant pulse–genetic erosion–is negatively associated to the within-genotype variation. A sensitive genotype with a small phenotypic variation would be more prone to be lost–a critically sensitive genotype. Furthermore, natural populations inhabiting contaminated sites are usually exposed to several pollutants. Such co- or sequential exposure can have severe effects if at least some tolerant clonal lineages surviving one contaminant are sensitive to the others. Such an inverse relationship coupled with a low within-genotype variation potentially enhances genetic erosion. Accordingly, this study evaluated co-tolerance and the occurrence of clonal lineages critically sensitive to 48-hours lethal exposures of copper, zinc, cobalt, and chromium among eight clonal lineages of the cladocerans Daphnia longispina. Median lethal concentrations (LC50) of each metal were found to have the potential to provoke genetic erosion. Pairwise comparisons of LC50, from the eight clonal lineages, revealed neither negative nor positive correlations (r ≤ |0.56|; p ≥ 0.18), but inversely sensitive clonal lineages were found for all pairs of metals. Therefore, besides having the potential to eliminate critically sensitive clonal lineages in a first intermediately lethal pulse, all tested metals may provoke further losses of clonal lineages in an already genetically eroded population.

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Section: Discussionmentioning

confidence: 99%

Multiple Stressor Differential Tolerances: Possible Implications at the Population Level

et al. 2016

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“…Генетический анализ популяций ряда высших растений показал, что основная устойчивость к некоторым металлам (мышьяк, медь, цинк) скорее всего, определяется одним или двумя основными генами и работой геновмодификаторов, определяющих уровень устойчивости (Schat et al, 1993;Smith, Macnair, 1998). Устойчивость к определенному металлу обычно контролируется геном (или генами), отличными от генов, определяющих устойчивость к другому металлу (Tilstone et al, 1997). Исследования природных популяций арахиса, гороха, кукурузы, пшеницы, риса, сои, ячменя, и гипераккумуляторов B. juncea и T. caerulescens выявили широкий полиморфизм по признакам основной и гиперустойчивости к Cd и его аккумуляции и гипераккумуляции ( Для твердой пшеницы было показано, что признак пониженного содержания Cd в зерне контролируется доминантной аллелью одного гена (Clarke et al, 1997), который локализован на хромосоме 5B (Grant et al, 2008).…”

Section: генетический анализ устойчивости растений к CD и его аккумуляцииunclassified

Molecular-Genetic Basis of Higher Plants Tolerance To, and Accumulation Of, Cadmium

Kulaeva

Tsyganov

2010

Ecological genetics

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Cadmium (Cd) is one of the most wide-ranged and dangerous pollutants for all living organisms, including plants. At present time the intensive studies of mechanisms of Cd accumulation in plant tissues and plant tolerance to its toxic influence are performed. Data about variation of Cd tolerance and accumulation traits in natural populations of hyperaccumulators species as well as important crops were obtained. A series of mutants with changed sensitivity to Cd was obtained. In recent decade several classes of proteins involving in cell responses to Cd ions were revealed. An important role of microRNA in plant adaptation to Cd was recently demonstrated. Studies of molecular-genetic mechanisms of Cd accumulation and plant tolerance to it are theoretical basis for development of phytoremediation technologies of soil contaminated with heavy metals and breeding of crop varieties with decreased Cd accumulation.

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Genetic Engineering for Metal Tolerance and Accumulation

2022

Aquatic Environmental Bioengineering

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Does copper tolerance give cadmium tolerance in Mimulus guttatus

Cited by 9 publications

References 28 publications

Multiple Stressor Differential Tolerances: Possible Implications at the Population Level

Multiple Stressor Differential Tolerances: Possible Implications at the Population Level

Molecular-Genetic Basis of Higher Plants Tolerance To, and Accumulation Of, Cadmium

Genetic Engineering for Metal Tolerance and Accumulation

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