Phylogenetic variation in heavy metal accumulation in angiosperms

Broadley, Martin R.; Willey, Neil; Wilkins, Janine C.; Baker, A. J. M.; Mead, Andrew; White, Philip J.

doi:10.1046/j.0028-646x.2001.00238.x

Cited by 200 publications

(147 citation statements)

References 67 publications

Supporting

Mentioning

131

Contrasting

Unclassified

Order By: Relevance

“…Even so, for most plants its toxicological effects are still poorly described (Jordan et al, 2010;Street, Stirk, & Van Staden, 2008). Despite the secondary metabolites' toxicity (Sirikantaramas, Yamazaki, & Saito, 2008), other internal components can be toxic, as heavy metals often bio-accumulated by aromatic plants (Broadley et al, 2001;F.M. Ferreira et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

Antioxidant capacity and toxicological evaluation ofPterospartum tridentatumflower extracts

Ferreira

Dinis

Azedo

et al. 2012

CyTA - Journal of Food

View full text Add to dashboard Cite

Pterospartum tridentatum Willk. (prickled broom) is an autochthonous plant, common in Portuguese territory. The yellow flowers are used in traditional medicine, as a potential cure for all body illnesses, mainly to treat throat irritations or for diabetes, hypertension and hypercholesterolemia therapy. Despite its traditional use, no toxicological assessment has been performed to our knowledge. A high antioxidant activity of P. tridentatum flower water extract was found, in good agreement with its electrospray ionisation-mass spectroscopy (ESI-MS) spectrum which revealed the presence of several flavonoids, such as luteolin-O-(O-acetyl)-glucuronide, luteolin-Oglucuronide or isorhamnetin-O-hexoside. Mitocondrial respiratory rates (state 4, state 3 and FCCP-stimulated respiration) and respiratory indexes (respiratory control and P/O ratios) showed no consistent decrease of respiratory and phosphorylative efficiencies for the concentrations tested (up to 500 mg.mL 71 ). Cytotoxicity evaluation, using MTT assay, was in agreement with the previous results. In conclusion, for the concentration range commonly used, P. tridentatum flower usage can be regarded as harmless and credible.Keywords: antioxidant capacity; cytotoxicity; oxidative phosphorylation; phytotherapy; Pterospartum tridentatum (L.); Willk.; toxicologic evaluation Pterospartum tridentatum Willk. es una planta auto´ctona comu´n en el territorio portugue´s. Las flores amarillas se usan en medicina tradicional como cura potencial para todas las enfermedades, especialmente para tratamientos de irritacio´n de garganta o para tratamientos contra diabetes, hipertensio´n o hipercolesterolemia. A pesar de su uso tradicional, ninguna evaluacio´n toxicolo´gica se ha llevado a cabo. Se encontro´una alta actividad antioxidante de extracto acuoso de flor de P. Tridentatum, concordando con su espectro ESI-MS, el cual revelo´la presencia de varios flavonoides, como luteolina O-(O-acetil)-glucuro´nido, luteolina-Oglucuro´nido o isorramntina-O-hexo´sido. Las frecuencias respiratorias mitocondriales (estado 4, estado 3 y respiracio´n estimulada por FCCP) mostraron un descenso no consistente de eficiencia respiratoria y fosforilativa para las concentraciones analizadas (hasta 500 mg.mL -1 ). La evaluacio´n de citotoxicidad, usando ensayo MTT, coincidio´con los resultados previos. En conclusio´n, para las concentraciones comu´nmente empleadas, el uso de las flores de P. tridentatum se puede considerar inocuo y verosı´mil.Palabras claves: capacidad antioxidante; citotoxicidad; fosforilacio´n oxidativa; fitoterapia; Pterospartum tridentatum (L.) Willk; evaluacio´n toxicolo´gica Abbreviations: ESI, electrospray ionization; FCCP, carbonyl cyanide p-trifluoromethoxyphenylhydrazone; HepG2, a human hepatoma cell line; MS, mass spectrometry; MTT, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide; P/O ratio, ratio of ADP molecules phosphorylated to atoms of oxygen consumed; RCR, respiratory control ratio (state 3 respiratory rate/state 4 respiratory rate)

show abstract

Section: Discussionmentioning

confidence: 99%

Antioxidant capacity and toxicological evaluation ofPterospartum tridentatumflower extracts

Ferreira

Dinis

Azedo

et al. 2012

CyTA - Journal of Food

View full text Add to dashboard Cite

show abstract

“…Literature reports of inter-species comparisons in Sr concentrations of any isotope were compiled with data we generated for 85 Sr using the Residual Maximum Likelihood (REML) procedure of Broadley et al ( , 2001Broadley et al ( , 2003Broadley et al ( , 2004. Nine publications were identified that reported, without the possibility of foliar contamination, a comparison of concentrations of a Sr isotope in green shoots in two or more plant species growing on the same substrate under identical conditions.…”

Section: Methodsmentioning

confidence: 99%

“…REML analysis was run on the statistical package Genstat for Windows 5th Ed. release 4.2 (VSN International, Oxford, UK) (Thompson and Welham, 2001) using the programme of Broadley et al ( , 2001Broadley et al ( , 2003Broadley et al ( , 2004. Defining blocks and treatments in this way accounts for the absolute differences in values arising from blocks (experimental conditions) to reveal mean relative values for the treatments (species).…”

Section: Methodsmentioning

confidence: 99%

“…numerous inter-species comparisons reveal a phylogenetic effect on phenotype. Not only have phylogenetic effects been described in plant phenotypes such as photosynthetic pathway (Ehleringer and Monson, 1993), carnivory (Albert et al, 1992), N-fixing symbioses (Doyle, 1998), mycorrhizal symbioses (Fitter and Moyerson, 1996) and ecological traits (Ackerley, 1999), but also in the uptake of 134/137 Cs Willey et al, 2005), heavy metals (Broadley et al, 2001), Al (Jansen et al, 2002), Ca and a range of nutrients . It has been noted that phylogenies might be useful to estimating radionuclide transfer to plants (Beresford et al, 2004;Willey et al, 2005).…”

Section: E-mail Addressmentioning

confidence: 99%

See 1 more Smart Citation

A phylogenetic effect on strontium concentrations in angiosperms

Willey

Fawcett

2006

Environmental and Experimental Botany

View full text Add to dashboard Cite

A Residual Maximum Likelihood (REML) procedure was used to compile Sr concentrations in 103 plant species from experiments with Sr concentrations in 66 plant species from the literature. There were 14 species in common between experiments and the literature. The REML procedure log e -transformed data and removed absolute differences in Sr concentrations arising from soil factors and exposure times to estimate mean relative Sr concentrations for 155 species. One hundred and forty-two species formed a group with a normal frequency distribution in mean relative Sr concentration. A nested hierarchical analysis of variance (ANOVA) based on the most recent molecular phylogeny of the angiosperms showed that plant species do not behave independently for Sr concentration but that there is a significant phylogenetic effect on mean relative Sr concentrations. Concentrations of Sr in non-Eudicots were significantly less than in Eudicots and there were significant effects on Sr concentrations in the dataset down the phylogenetic hierarchy to the family level. Of the orders in the dataset the Cucurbitales, Lamiales, Saxifragales and Ranunculales had particularly high Sr concentrations and the Liliales, Poales, Myrtales and Fabales particularly low Sr concentrations. Mean relative Sr concentrations in 60 plant species correlated with those reported elsewhere for Ca in the same species, and the frequency distribution and some phylogenetic effects on Sr concentration in plants were similar to those reported for Ca. This analysis of mean relative Sr concentrations in 155 plant species across the angiosperm phylogeny might be helpful for modelling 90 Sr in food chains, predicting radiological doses to flora, and selecting species for phytomonitoring and phytoremediation of 90 Sr.

show abstract

“…12 Cd is toxic for most of the important crop plants at concentrations more than 5-10 μg Cd g -1 leaf dry weight except some of the Cd-hyperaccumulators which can tolerate Cd concentrations of 100 μg Cd g -1 leaf dry weight. [16][17][18] However, Cd is toxic to plants even at low concentration in the soils but its phytotoxicity varies with the concentration of Cd in the soil as well as with the plant species and cultivars. Some plant species or cultivars content, as well as reduced CA activity.…”

Section: Introductionmentioning

confidence: 99%

Differential cadmium stress tolerance in five Indian mustard (Brassica junceaL.) cultivars

Gill

Khan

Tuteja

2011

Plant Signaling & Behavior

141

View full text Add to dashboard Cite

IntroductionAgricultural soils worldwide are slightly to moderately contaminated with toxic heavy metals that restrict the crop plants to reach their full genetic potential and cause significant loss by reducing the crop productivity. 1 Among heavy metals, Cd is a non-essential and most deleterious heavy metal pollutant commonly released into the arable soil from various industrial, mining and farming practices, 2 and has been ranked No. 7 among the top 20 toxins which affect the human health by entering in the food chain. 3,4 Although Cd is a highly phytotoxic metal, it is easily taken up by plant roots growing on Cd-contaminated soils and transported to above ground plant parts. 5-7 The regulatory limit of Cd in agricultural soils is 100 mg Cd kg -1 soil, 8 but this threshold is continuously increasing because of anthropogenic and industrial activities. Plants growing on Cd contaminated soil result in Cd accumulation in all plant parts, which inhibits plant growth, affect nutrient uptake, alters the chloroplast ultrastructure, inactivates enzymes of CO 2 fixation, inhibits photosynthesis and induces lipid peroxidation and antioxidant machinery. 4,[9][10][11] However, Cd is a non redox-active metal, but it induces the generation of reactive oxygen species (ROS) including superoxide radical (O 2•-), hydrogen peroxide (H 2 O 2 ) and hydroxyl radicalThe presence of cadmium (cd) in the agricultural soils affects horticultural cultivars and constrains the crop productivity. a pot experiment was performed using five cultivars of mustard (Brassica juncea L.) to evaluate the difference in their response to cd toxicity under greenhouse conditions. The pots containing reconstituted soil were supplied with different concentration of cdcl 2 (0, 25, 50, 100 or 150 mg cd kg -1 soil). Increasing concentration of cd in the soil resulted in decreased growth, photosynthesis and yield. Maximum significant reduction in growth, photosynthesis and yield were observed with 150 mg cd kg -1 soil in all the cultivars. Our results indicate that the cultivar alankar is found to be more tolerant to cd stress, recording higher plant dry mass, net photosynthesis rate, associated with high antioxidant activity and low cd content in the plant leaves and thus less oxidative damage. cultivar rh30 experienced maximum damage in terms of reduction in growth, photosynthesis, yield characteristics and oxidative damage and emerged as sensitive cultivar. The data of tolerance index of alankar were found to be higher among all tested mustard cultivars which indicate its higher tolerance to cd. Better coordination of antioxidants protected alankar from cd toxicity, whereas lesser antioxidant activity in rh30 resulted in maximum damage. cultivars of mustard were ranked with respect to their tolerance to cd: alankar > Varuna > Pusa Bold > Sakha > rh30, respectively.Differential cadmium stress tolerance in five indian mustard (Brassica juncea L.) cultivars

show abstract

Phylogenetic variation in heavy metal accumulation in angiosperms

Cited by 200 publications

References 67 publications

Antioxidant capacity and toxicological evaluation ofPterospartum tridentatumflower extracts

Antioxidant capacity and toxicological evaluation ofPterospartum tridentatumflower extracts

A phylogenetic effect on strontium concentrations in angiosperms

Differential cadmium stress tolerance in five Indian mustard (Brassica junceaL.) cultivars

Contact Info

Product

Resources

About