Hyperaccumulator Plants from China: A Synthesis of the Current State of Knowledge

Li, Jintian; Gurajala, Hanumanth Kumar; Wu, Longhua; Ent, Antony van der; Qiu, Rongliang; Baker, A. J. M.; Liu, Wen-Shen; Yang, Xiaoe; Li, Jin‐tian

doi:10.1021/acs.est.8b01060

Cited by 196 publications

(66 citation statements)

References 149 publications

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“…Knowledge on the ecophysiology of REE hyperaccumulator plants is important to better understand the mechanisms for uptake, translocation and sequestration of REEs into living shoots. To date, most studies have focused on the uptake of Ni, zinc (Zn), cadmium (Cd) and arsenic (As) in various hyperaccumulator plant models (Hokura et al, 2006;Tappero et al, 2007;Vogel-Mikuš et al 2008;Tian et al, 2009;Hu et al, 2015), while much less is known about the ecophysiology of REE hyperaccumulator plants (Li et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Spatially Resolved Localization of Lanthanum and Cerium in the Rare Earth Element Hyperaccumulator Fern Dicranopteris linearis from China

Ent

Erskine

Morel

et al. 2020

Environ. Sci. Technol.

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The fern Dicranopteris linearis (Gleicheniaceae) from China is a hyperaccumulator of Rare Earth Elements (REEs), but little is known about its ecophysiology in relation to REEs. This study aimed to clarify tissue-tissue and organ-level distribution of REEs via synchrotronbased X-ray fluorescence microscopy (XFM).• The results show that La + Ce are mainly co-localized with Mn in the pinnae and pinnules, with the highest concentrations in necrotic tissues.• In the cross-sections of the pinnules, midveins, petioles and stolons La + Ce and Mn are enriched in the epidermis, vascular bundles, and pericycle (midvein). In these tissues, Mn is localised mainly in the cortex and mesophyll compared to La + Ce in these cross-sections.• We hypothesize that REEs transpiration flow in the veins is initially restricted by the pericycle between vascular bundle and cortex, whilst excess REEs are transported by evaporation and co-compartmentalized with Mn in the necrotic tissues and epidermis in an immobile form, possibly an Si-coprecipitate.

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Section: Introductionmentioning

confidence: 99%

Spatially Resolved Localization of Lanthanum and Cerium in the Rare Earth Element Hyperaccumulator Fern Dicranopteris linearis from China

Ent

Erskine

Morel

et al. 2020

Environ. Sci. Technol.

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“…Unfortunately, it has evolved into an invasive species and spread to most areas of the country, especially in central and southern China. Compared to non-invasive exotic congener P. icosandra and native congener P. acinosa , P. americana is of interest because it exhibits multiple biological activities, such as plant pesticides, antimicrobial property, heavy metal accumulation capacity [ 2 – 4 ].…”

Section: Introductionmentioning

confidence: 99%

Full-length transcriptome analysis of Phytolacca americana and its congener P. icosandra and gene expression normalization in three Phytolaccaceae species

Liu

Chen

et al. 2020

BMC Plant Biol

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Background: Phytolaccaceae species in China are not only ornamental plants but also perennial herbs that are closely related to human health. However, both large-scale full-length cDNA sequencing and reference gene validation of Phytolaccaceae members are still lacking. Therefore, single-molecule real-time sequencing technology was employed to generate full-length transcriptome in invasive Phytolacca americana and non-invasive exotic P. icosandra. Based on the transcriptome data, RT-qPCR was employed to evaluate the gene expression stability in the two plant species and another indigenous congener P. acinosa. Results: Total of 19.96 Gb and 19.75 Gb clean reads of P. americana and P. icosandra were generated, including 200,857 and 208,865 full length non-chimeric (FLNC) reads, respectively. Transcript clustering analysis of FLNC reads identified 89,082 and 98,448 consensus isoforms, including 86,989 and 96,764 high-quality ones. After removing redundant reads, 46,369 and 50,220 transcripts were obtained. Based on structure analysis, total 1675 and 1908 alternative splicing variants, 25,641 and 31,800 simple sequence repeats (SSR) as well as 34,971 and 36,841 complete coding sequences were detected separately. Furthermore, 3574 and 3833 lncRNA were predicted and 41,676 and 45,050 transcripts were annotated respectively. Subsequently, seven reference genes in the two plant species and a native species P. acinosa were selected and evaluated by RT-qPCR for gene expression analysis. When tested in different tissues (leaves, stems, roots and flowers), 18S rRNA showed the highest stability in P. americana, whether infested by Spodoptera litura or not. EF2 had the most stable expression in P. icosandra, while EF1-α was the most appropriate one when attacked by S. litura. EF1-α showed the highest stability in P.acinosa, whereas GAPDH was recommended when infested by S. litura. Moreover, EF1-α was the most stable one among the three plant species whenever germinating seeds or flowers only were considered.

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“…Notably, among different candidates for phytoremediation of Cd pollution, Brassica species are considered promising hyperaccumulators [40,41]. A previous study reported that most of the metal transporter genes (74.8%, 202/270) responded to Cd stress, suggesting that at least some of them are involved in Cd uptake and translocation in Brassica napus [42].…”

Section: Introductionmentioning

confidence: 99%

Comparative Transcriptome Analysis of the Molecular Mechanism of the Hairy Roots of Brassica campestris L. in Response to Cadmium Stress

Sun

Cao

et al. 2019

IJMS

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Brassica campestris L., a hyperaccumulator of cadmium (Cd), is considered a candidate plant for efficient phytoremediation. The hairy roots of Brassica campestris L are chosen here as a model plant system to investigate the response mechanism of Brassica campestris L. to Cd stress. High-throughput sequencing technology is used to identify genes related to Cd tolerance. A total of 2394 differentially expressed genes (DEGs) are identified by RNA-Seq analysis, among which 1564 genes are up-regulated, and 830 genes are down-regulated. Data from the gene ontology (GO) analysis indicate that DEGs are mainly involved in metabolic processes. Glutathione metabolism, in which glutathione synthetase and glutathione S-transferase are closely related to Cd stress, is identified in the Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis. A Western blot shows that glutathione synthetase and glutathione S-transferase are involved in Cd tolerance. These results provide a preliminary understanding of the Cd tolerance mechanism of Brassica campestris L. and are, hence, of particular importance to the future development of an efficient phytoremediation process based on hairy root cultures, genetic modification, and the subsequent regeneration of the whole plant.

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Hyperaccumulator Plants from China: A Synthesis of the Current State of Knowledge

Cited by 196 publications

References 149 publications

Spatially Resolved Localization of Lanthanum and Cerium in the Rare Earth Element Hyperaccumulator Fern Dicranopteris linearis from China

Spatially Resolved Localization of Lanthanum and Cerium in the Rare Earth Element Hyperaccumulator Fern Dicranopteris linearis from China

Full-length transcriptome analysis of Phytolacca americana and its congener P. icosandra and gene expression normalization in three Phytolaccaceae species

Comparative Transcriptome Analysis of the Molecular Mechanism of the Hairy Roots of Brassica campestris L. in Response to Cadmium Stress

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