Transcriptomic analysis of selenium accumulation in Puccinellia distans (Jacq.) Parl., a boron hyperaccumulator

Kök, Aysu Başak; Mungan, Mehmet Direnç; Doğanlar, Sami; Frary, Anne

doi:10.1016/j.chemosphere.2019.125665

Cited by 14 publications

(8 citation statements)

References 59 publications

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“…Another study species, Noccaea caerulescens , hyperaccumulates Zn, Cd, and nickel (Ni) ( Kozhevnikova et al, 2020 ). The grass Pulcinella distans , a known boron (B) hyperaccumulator, has recently been found to also hyperaccumulate Se ( Kök et al, 2020 ). This is, to our knowledge, the first multi-accumulator to hyperaccumulate Se.…”

Section: Selenium Hyperaccumulatorsmentioning

confidence: 99%

Selenium transport and metabolism in plants: Phytoremediation and biofortification implications

Trippe

Pilon‐Smits

2021

Journal of Hazardous Materials

146

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The aim of this review is to synthesize current knowledge of selenium (Se) transport and metabolism in plants, with a focus on implications for biofortification and phytoremediation. Selenium is a necessary human micronutrient, and around a billion people worldwide may be Se deficient. This can be ameliorated by Se biofortification of staple crops. Selenium is also a potential toxin at higher concentrations, and multiple environmental disasters over the past 50 years have been caused by Se pollution from agricultural and industrial sources. Phytoremediation by plants able to take up large amounts of Se is an important tool to combat pollution issues. Both biofortification and phytoremediation applications require a thorough understanding of how Se is taken up and metabolized by plants. Selenium uptake and translocation in plants are largely accomplished via sulfur (S) transport proteins. Current understanding of these transporters is reviewed here, and transporters that may be manipulated to improve Se uptake are discussed. Plant Se metabolism also largely follows the S metabolic pathway. This pathway is reviewed here, with special focus on genes that have been, or may be manipulated to reduce the accumulation of toxic metabolites or enhance the accumulation of nontoxic metabolites. Finally, unique aspects of Se transport and metabolism in Se hyperaccumulators are reviewed. Hyperaccumulators, which can accumulate Se at up to 1000 times higher concentrations than normal plants, present interesting specialized systems of Se transport and metabolism. Selenium hyperaccumulation mechanisms and potential applications of these mechanisms to biofortification and phytoremediation are presented.

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Section: Selenium Hyperaccumulatorsmentioning

confidence: 99%

Selenium transport and metabolism in plants: Phytoremediation and biofortification implications

Trippe

Pilon‐Smits

2021

Journal of Hazardous Materials

146

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“…In the biosynthesis of phenylpropanoid biosynthesis, 4 DEGs were up-regulated, and 10 DEGs were down-regulated. Transcriptome analysis revealed a substantial enrichment of DEGs involved in phenylpropanoid production in Se-treated Puccinellia tenuiflora [ 47 ]. The biosynthesis of flavonoids, isoflavones, and anthocyanins in Se-rich Tartary buckwheat was mainly facilitated by phenylpropanoids [ 48 ].…”

Section: Discussionmentioning

confidence: 99%

Transcriptome and Metabolome Analysis of Selenium Treated Alfalfa Reveals Influence on Phenylpropanoid Biosynthesis to Enhance Growth

Wang

Yang

et al. 2023

Plants

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Selenium (Se) plays an important role in the growth of plants. Alfalfa (Medicago sativa L.) is a perennial legume forage crop with high nutritional value and Se-rich functions. Many studies have shown that selenium can promote alfalfa growth, but few have explored the molecular biology mechanisms behind this effect. In this study, alfalfa was divided into two groups. One group was sprayed with sodium selenite (Na2SeO3) and the other group was sprayed with distilled water as a control. This study determined the growth, reproductive traits, physiological changes, transcriptome and metabolome of both groups of alfalfa. We found that foliar spraying of 100 mg/L Na2SeO3 could significantly increase the growth rate, dry weight, total Se content, amount of pollen per flower, pollen viability, pod spirals, and seed number per pod of alfalfa plants. The level of chlorophyll, soluble protein, proline, and glutathione also increased dramatically in Na2SeO3-sprayed alfalfa seedlings. After transcriptome and metabolome analysis, a total of 614 differentially expressed genes (DEGs) and 1500 differentially expressed metabolites (DEMs), including 26 secondary differentially metabolites were identified. The DEGs were mainly enriched in MAPK signaling pathway, phenylpropanoid biosynthesis, isoflavonoid biosynthesis, cutin, suberine, and wax biosynthesis, and glycerolipid metabolism. The DEMs were mainly enriched in flavone and flavonol biosynthesis, carbon metabolism, glyoxylate and dicarboxylate metabolism, nitrogen metabolism, and phenylpropanoid biosynthesis. Integrative analysis of transcriptome and metabolome showed that the foliar spraying of Na2SeO3 mainly affects phenylpropanoid biosynthesis to promote alfalfa growth.

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“…Rice treated with Se had increased lignin content and thickness of the cell walls to improve the force of the cell walls, with the increased expression of lignin biosynthesis-related genes (i.e., OsPAL and Os4CL3 ) ( Cui et al, 2018 ). The transcriptomic analysis showed that Se treatment-induced DEGs significantly enriched in the cell wall category in Puccinellia distans ( Kok et al, 2020 ).…”

Section: Discussionmentioning

confidence: 99%

Transcriptomic Characterization of the Effects of Selenium on Maize Seedling Growth

et al. 2021

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Selenium (Se) is a trace mineral element in soils that can be beneficial to plants in small amounts. Although maize is among the most economically important crops, there are few reports on the effects of Se on maize seedling growth at the molecular level. In this study, the growth of maize seedlings treated with different concentrations of Na2SeO3 was investigated, and the physiological characteristics were measured. Compared with the control, a low Se concentration promoted seedling growth, whereas a high Se concentration inhibited it. To illustrate the transcriptional effects of Se on maize seedling growth, samples from control plants and those treated with low or high concentrations of Se were subjected to RNA sequencing. The differentially expressed gene (DEG) analysis revealed that there were 239 upregulated and 106 downregulated genes in the low Se treatment groups, while there were 845 upregulated and 1,686 downregulated DEGs in the high Se treatment groups. Both the Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) annotation analyses showed a low concentration of the Se-stimulated expression of “DNA replication” and “glutathione (GSH) metabolism”-related genes. A high concentration of Se repressed the expression of auxin signal transduction and lignin biosynthesis-related genes. The real-time quantitative reverse transcription PCR (qRT-PCR) results showed that in the low Se treatment, “auxin signal transduction,” “DNA replication,” and lignin biosynthesis-related genes were upregulated 1.4- to 57.68-fold compared to the control, while, in the high Se concentration treatment, auxin signal transduction and lignin biosynthesis-related genes were downregulated 1.6- to 16.23-fold compared to the control. Based on these transcriptional differences and qRT-PCR validation, it was found that a low dosage of Se may promote maize seedling growth but becomes inhibitory to growth at higher concentrations. This study lays a foundation for the mechanisms underlying the effects of Se on maize seedling growth.

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Transcriptomic analysis of selenium accumulation in Puccinellia distans (Jacq.) Parl., a boron hyperaccumulator

Cited by 14 publications

References 59 publications

Selenium transport and metabolism in plants: Phytoremediation and biofortification implications

Selenium transport and metabolism in plants: Phytoremediation and biofortification implications

Transcriptome and Metabolome Analysis of Selenium Treated Alfalfa Reveals Influence on Phenylpropanoid Biosynthesis to Enhance Growth

Transcriptomic Characterization of the Effects of Selenium on Maize Seedling Growth

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