The possible polyphyletic origin of copper tolerance inAgrostis tenuis (Gramineae)

Nicholls, M. K.; McNeilly, T.

doi:10.1007/bf02407292

Cited by 16 publications

(9 citation statements)

References 25 publications

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“…Edaphic specialists can arise under both of these scenarios (i.e., rapid versus gradual). Recently evolved neoendemics can evolve from nearby, non-specialized relatives via rapid and local speciation, including via parapatric, sympatric, and peripatric modes (Anacker & (Wu et al, 1975;Nichols & McNeilly, 1982;Al-Hiyali et al, 1993); Saline soil (Venables & Wilkins, 1978) Serpentine (Sobczyk et al, 2017) Mine soil, Park Grass Experiment (nutrient and lime treatments) (Silvertown et al, 2005;Antonovics, 2006) Metal soils (Hunter & Bomblies, 2010) Serpentine (Turner et al, 2008) Calamine soils (Baumbach & Hellwig, 2007) Serpentine (Pepper & Norwood, 2001) Multiple mechanisms, including nicotianamine, L-cysteine, superoxide dismutase production, and HSP70 overexpression (Hego et al, 2016) Nickel hyperaccumulation (Sobczyk et al, 2017) Metal exclusion from shoot (Qureshi et al, 1985); nitrogen tolerance (Freeland et al, 2010) Zinc and Cadmium tolerance (Roux et al, 2011) Possibly, heavy metal and Ca:Mg tolerance (Turner et al, 2008(Turner et al, , 2010 Role of malate in metal translocation, reduced oxidative stress (Olko et al, 2008;…”

Section: Are Edaphic Endemics New or Old Species?mentioning

confidence: 99%

Lessons on Evolution from the Study of Edaphic Specialization

Rajakaruna

2017

Bot. Rev.

106

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Plants adapted to special soil types are ideal for investigating evolutionary processes, including maintenance of intraspecific variation, adaptation, reproductive isolation, ecotypic differentiation, and the tempo and mode of speciation. Common garden and reciprocal transplant approaches show that both local adaptation and phenotypic plasticity contribute to edaphic (soil-related) specialization. Edaphic specialists evolve rapidly and repeatedly in some lineages, offering opportunities to investigate parallel evolution, a process less commonly documented in plants than in animals. Adaptations to soil features are often under the control of major genes and they frequently have direct or indirect effects on genes that contribute to reproductive isolation. Both reduced competitiveness and greater susceptibility to herbivory have been documented among some edaphic specialists when grown in 'normal' soils, suggesting that a high physiological cost of tolerance may result in strong divergent selection across soil boundaries. Interactions with microbes, herbivores, and pollinators influence soil specialization either by directly enhancing tolerance to extremes in soil conditions or by reducing gene flow between divergent populations. Climate change may further restrict the distribution of edaphic specialists due to increased competition from other taxa or, expand their ranges, if preadaptations to drought or other abiotic stressors render them more competitive under a novel climate.

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Section: Are Edaphic Endemics New or Old Species?mentioning

confidence: 99%

Lessons on Evolution from the Study of Edaphic Specialization

Rajakaruna

2017

Bot. Rev.

106

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“…Repeated evolution of a specific metal tolerance within the same species implies the possibility that tolerance mechanisms may be population specific, rather than species specific or universal. Population-specific mechanisms have been suggested to occur in cases of copper tolerance in Agrostis capillaris (Nicholls and McNeilly 1982) and zinc tolerance in Deschampsia cespitosa (Von Frenckell-Insam and Hutchinson 1993) and A. capillaris (Al-Hiyaly et al 1990, 1993. However, none of these authors has provided evidence concerning the genetics, the biochemistry, and the physiology of the tolerances they investigated.…”

mentioning

confidence: 99%

Identical Major Gene Loci for Heavy Metal Tolerances that Have Independently Evolved in Different Local Populations and Subspecies of Silene vulgaris

Schat¹,

Vooijs²,

Kuiper³

1996

Evolution

109

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“…Heavy-metal tolerance in A. capillaris is not genetically simple. It is under polygenic control (Gartside and McNeilly, 1974) and may be of polyphyletic origin (Nicholls and McNeilly, 1982). Early work on heavymetal tolerance suggested that the tolerance of minewaste populations was metal-specific (Gregory and Bradshaw, 1965;Turner, 1969;Walley et al, 1974).…”

Section: Discussionmentioning

confidence: 99%