Is metal hyperaccumulation occurring in ultramafic vegetation of central and southern Mexico?

Gutiérrez, Dulce M. Navarrete; Pons, Marie‐Noëlle; Sánchez, Jesús Axayacatl Cuevas; Echevarria, Guillaume

doi:10.1007/s11284-018-1574-4

Cited by 14 publications

(6 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ultramafic outcrops, ophiolites, and Ni‐laterite soils are documented in the region (Roberts and Irving, ; Lewis et al., ; Ortiz‐Hernández et al., ; Harlow et al., ; Hernández‐Quiroz et al., ). A few field expeditions have previously searched such areas for hyperaccumulators but found none (Reeves et al., ; Navarrete Gutiérrez et al., ).…”

mentioning

confidence: 99%

Phylogenetic and geographic distribution of nickel hyperaccumulation in neotropical Psychotria

McCartha

Taylor

Ent

et al. 2019

American J of Botany

Self Cite

View full text Add to dashboard Cite

Hyperaccumulation of metals and metalloids is a rare phenomenon, currently known in only about 720 plant species; yet, it has a broad geographic and phylogenetic distribution (Reeves et al., 2017). Hyperaccumulators are defined on the basis of exceptionally high concentrations of a given metallic element in their foliar tissue, exceeding specified criteria that are typically 2-3 orders of magnitude higher than is generally found in most plants and at least one order of magnitude higher than in other plants growing on metalliferous soils (Reeves, 2003;van der Ent et al., 2013). These high concentrations are toxic to normal plants, but hyperaccumulators have sufficient metal tolerance to survive and to reproduce on metalliferous soils, and the majority of such species are restricted to these habitats (Pollard et al., 2014). Hypotheses that have been proposed to explain the evolution of hyperaccumulation (Boyd and Martens, 1992;Boyd, 2014) include tolerance or disposal of substrate metals, drought resistance, allelopathy, "inadvertent" accumulation of the metal via mechanisms for uptake of another element, and defense against herbivores and pathogens.Regulation of elemental uptake, including processes of exclusion, accumulation, and hyperaccumulation, has broad implications for plant biochemistry, physiology, ecology, and evolution. The extreme elemental concentrations found in hyperaccumulators have made them useful systems for study of nutrient acquisition, transport, and homeostasis (van der Ent et al., 2013), plant-herbivore interactions PREMISE: Hyperaccumulation of heavy metals in plants has never been documented from Central America or Mexico. Psychotria grandis, P. costivenia, and P. glomerata (Rubiaceae) have been reported to hyperaccumulate nickel in the Greater Antilles, but they also occur widely across the neotropics. The goals of this research were to investigate the geographic distribution of hyperaccumulation in these species and explore the phylogenetic distribution of hyperaccumulation in this clade by testing related species.METHODS: Portable x-ray fluorescence (XRF) spectroscopy was used to analyze 565 specimens representing eight species of Psychotria from the Missouri Botanical Garden herbarium. RESULTS:Nickel hyperaccumulation was found in specimens of Psychotria costivenia ranging from Mexico to Costa Rica and in specimens of P. grandis from Guatemala to Ecuador and Venezuela. Among related species, nickel hyperaccumulation is reported for the first time in P. lorenciana and P. papantlensis, but no evidence of hyperaccumulation was found in P. clivorum, P. flava, or P. pleuropoda. Previous reports of hyperaccumulation in P. glomerata appear to be erroneous, resulting from taxonomic synonymy and specimen misidentification.CONCLUSIONS: Hyperaccumulation of nickel by Psychotria is now known to occur widely from southern Mexico through Central America to northwestern South America, including some areas not known to have ultramafic soils. Novel aspects of this research include the successful predi...

show abstract

mentioning

confidence: 99%

Phylogenetic and geographic distribution of nickel hyperaccumulation in neotropical Psychotria

McCartha

Taylor

Ent

et al. 2019

American J of Botany

Self Cite

View full text Add to dashboard Cite

show abstract

“…This is mainly due to the existence of a reagent paper test that is only specific to nickel (based on dimethylglyoxime, it is clear that many territories remain to be prospected. It is also true that recent research, for example, in Mexico, has not detected new hyperaccumulator taxa (Navarrete Gutiérrez et al, 2018). On the contrary, the Central American zone has found new hyperaccumulator species of the genus Psychotria (McCartha et al, 2019).…”

Section: Conservation Status Of Hyperaccumulator Floramentioning

confidence: 99%

Use of machine learning to establish limits in the classification of hyperaccumulator plants growing on serpentine, gypsum and dolomite soils

Mota-Merlo

Martos

2021

Mediterr. Bot.

View full text Add to dashboard Cite

The so-called hyperaccumulator plants are capable of storing hundred or thousand times bigger quantities of heavy metals than normal plants, which makes hyperaccumulators very useful in fields such as phytoremediation and phytomining. Among these plants there are many serpentinophytes, i.e., plants that grow exclusively on ultramafic rocks which produce soils with a great proportion of heavy metals. Even though there are multiple classifications, the lack of consensus regarding which parameters to use to determine whether a plant is a hyperaccumulator, as well as the arbitrariness of stablished thresholds, bring about the need to propose more objective criteria. To this end, plant mineral composition data from different vegetal species were analysed using machine learning techniques. Three complementary case studies were established. Firstly, plants were classified in three types of soils: dolomite, gypsum and serpentine. Secondly, data about normal and hyperaccumulator plant Ni composition were analysed with machine learning to find differentiated subgroups. Lastly, association studies were carried out using data about mineral composition and soil type. Results in the classification task reach a success rate over 75%. Clustering of plants by Ni concentration in parts per million (ppm) resulted in four groups with cut-off points in 2.25, 100 (accumulators) and 3000 ppm (hyperaccumulators). Associations with a confidence level above 90% were found between high Ni levels and serpentine soils, as well as between high Ni and Zn levels and the same type of soil. Overall, this work demonstrates the potential of machine learning to analyse data about plant mineral composition. Finally, after consulting the red list of the IUCN and those of countries with high richness in hyperaccumulator species, it is evident that a greater effort should be made to establish the conservation status of this type of flora.

show abstract

“…The area is mainly covered by the "Lacandona" tropical evergreen rainforest, and dominated by rolling hills made up mainly of limestone sedimentary rocks (lutite, limonite) from the upper Cretaceous (Mesozoic) with overlapped layers of marine origin from the lower Tertiary (Cenozoic). Marls and clays could be found on the foot of the slopes and in alluvial areas (Müllerried 1957;Levy Tacher et al 2006;SGM 2006). Main soil types are Rendzinas, Gleysols and Litosols (INIFAP-CONABIO 1995;Mendoza-Vega and Messing 2005)..…”

Section: Ocosingo Chiapasmentioning

confidence: 99%

Blepharidium guatemalense, an obligate nickel hyperaccumulator plant from non-ultramafic soils in Mexico

et al. 2021

Self Cite

View full text Add to dashboard Cite

kindly supplied a hand-held XRF instrument for herbarium scanning. This research was partly undertaken at P06 at at Deutsches Elektronen Synchrotron (DESY), a member of the Helmholtz Association (HGF). The research leading to this result has been also supported by the project CALIPSOplus under the Grant Agreement 730872 from the EU Framework Programme for Research and Innovation HORIZON 2020. The micro-XRF instrumentation used in this study was cofunded by ICEEL (Carnot Institute)-CREGU-LabEX Ressources 21 (ANR-10-LABX 21-LABEX RESSOURCES 21) and FEDER. Special acknowledgments are made to MSc Blanca V. Juarez Jaimes (MEXU herbarium) for plant identification, to MSc. Jorge A. Ramírez Espinosa, Ing. Francisco Navarrete Torralba and all the students from the Universidad Tecnológica de la Selva (UTS) for their valuable contribution during the field surveys and for their current investment in this research. The authors are also grateful to Haley Disinger for the enrichment of the database (XRF screening data from the MO herbarium in Saint Louis), to Vanessa Invernon for her support at the Paris herbarium (Muséum National d'Histoire Naturelle in Paris) and to all the technicians from MEXU herbarium for their valuable cooperation.We would like to thank Kathryn Spiers and Jan Garrevoet for their assistance during the experiments.We wish to thank Professor Alan Baker (The Universities of Melbourne and Queensland, Australia) for reviewing the paper and suggesting improvements to the text.

show abstract

Is metal hyperaccumulation occurring in ultramafic vegetation of central and southern Mexico?

Cited by 14 publications

References 27 publications

Phylogenetic and geographic distribution of nickel hyperaccumulation in neotropical Psychotria

Phylogenetic and geographic distribution of nickel hyperaccumulation in neotropical Psychotria

Use of machine learning to establish limits in the classification of hyperaccumulator plants growing on serpentine, gypsum and dolomite soils

Blepharidium guatemalense, an obligate nickel hyperaccumulator plant from non-ultramafic soils in Mexico

Contact Info

Product

Resources

About