{"title":"Rhodococcus opacus PD630 对 Brassica oleracea 植物修复硒的影响。","authors":"Sinead Morris, Diana Quispe-Arpasi, Piet N L Lens","doi":"10.1080/15226514.2024.2311725","DOIUrl":null,"url":null,"abstract":"<p><p>The purpose of this study was to evaluate the potential of microbial-enhanced <i>Brassica oleracea</i> for the phytoremediation of seleniferous soils. The effect of selenite (Se(IV)) and selenate (Se(VI)) on <i>B. oleracea</i> (1-100 mg.L<sup>-1</sup>) was examined through germination (7 d) and pot (30 d) trials. Microbial analysis was conducted to verify the toxic effect of various Se concentrations (1-500 mg.L<sup>-1</sup>) on <i>Rhodococcus opacus</i> PD360, and to determine if it exhibits plant growth promoter traits. <i>R. opacus</i> PD630 was found to tolerate high concentrations of both Se(IV) and Se(VI), above 100 mg.L<sup>-1</sup>. <i>R. opacus</i> PD630 reduced Se(IV) and Se(VI) over 7 days, with a Se conversion efficiency between 60 and 80%. Germination results indicated lower concentrations (0-10 mg.L<sup>-1</sup>) of Se(IV) and Se(VI) gave a higher shoot length (> 4 cm). <i>B. oleracea</i> accumulated 600-1,000 mg.kg<sup>-1 </sup>dry weight (DW) of Se(IV) and Se(VI), making it a secondary accumulator of Se. Moreover, seeds inoculated with <i>R. opacus</i> PD360 showed increased Se uptake (up to 1,200 mg Se.kg<sup>-1</sup> DW). In addition, bioconcentration and translocation factors were greater than one. The results indicate a synergistic effect between <i>R. opacus</i> PD630 and <i>B. oleracea</i> for Se phytoextraction from polluted soils.</p>","PeriodicalId":3,"journal":{"name":"ACS Applied Electronic Materials","volume":null,"pages":null},"PeriodicalIF":4.3000,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of <i>Rhodococcus opacus</i> PD630 on selenium phytoremediation by <i>Brassica oleracea</i>.\",\"authors\":\"Sinead Morris, Diana Quispe-Arpasi, Piet N L Lens\",\"doi\":\"10.1080/15226514.2024.2311725\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>The purpose of this study was to evaluate the potential of microbial-enhanced <i>Brassica oleracea</i> for the phytoremediation of seleniferous soils. The effect of selenite (Se(IV)) and selenate (Se(VI)) on <i>B. oleracea</i> (1-100 mg.L<sup>-1</sup>) was examined through germination (7 d) and pot (30 d) trials. Microbial analysis was conducted to verify the toxic effect of various Se concentrations (1-500 mg.L<sup>-1</sup>) on <i>Rhodococcus opacus</i> PD360, and to determine if it exhibits plant growth promoter traits. <i>R. opacus</i> PD630 was found to tolerate high concentrations of both Se(IV) and Se(VI), above 100 mg.L<sup>-1</sup>. <i>R. opacus</i> PD630 reduced Se(IV) and Se(VI) over 7 days, with a Se conversion efficiency between 60 and 80%. Germination results indicated lower concentrations (0-10 mg.L<sup>-1</sup>) of Se(IV) and Se(VI) gave a higher shoot length (> 4 cm). <i>B. oleracea</i> accumulated 600-1,000 mg.kg<sup>-1 </sup>dry weight (DW) of Se(IV) and Se(VI), making it a secondary accumulator of Se. Moreover, seeds inoculated with <i>R. opacus</i> PD360 showed increased Se uptake (up to 1,200 mg Se.kg<sup>-1</sup> DW). In addition, bioconcentration and translocation factors were greater than one. The results indicate a synergistic effect between <i>R. opacus</i> PD630 and <i>B. oleracea</i> for Se phytoextraction from polluted soils.</p>\",\"PeriodicalId\":3,\"journal\":{\"name\":\"ACS Applied Electronic Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2024-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Applied Electronic Materials\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://doi.org/10.1080/15226514.2024.2311725\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2024/2/13 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Electronic Materials","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1080/15226514.2024.2311725","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/2/13 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Effect of Rhodococcus opacus PD630 on selenium phytoremediation by Brassica oleracea.
The purpose of this study was to evaluate the potential of microbial-enhanced Brassica oleracea for the phytoremediation of seleniferous soils. The effect of selenite (Se(IV)) and selenate (Se(VI)) on B. oleracea (1-100 mg.L-1) was examined through germination (7 d) and pot (30 d) trials. Microbial analysis was conducted to verify the toxic effect of various Se concentrations (1-500 mg.L-1) on Rhodococcus opacus PD360, and to determine if it exhibits plant growth promoter traits. R. opacus PD630 was found to tolerate high concentrations of both Se(IV) and Se(VI), above 100 mg.L-1. R. opacus PD630 reduced Se(IV) and Se(VI) over 7 days, with a Se conversion efficiency between 60 and 80%. Germination results indicated lower concentrations (0-10 mg.L-1) of Se(IV) and Se(VI) gave a higher shoot length (> 4 cm). B. oleracea accumulated 600-1,000 mg.kg-1 dry weight (DW) of Se(IV) and Se(VI), making it a secondary accumulator of Se. Moreover, seeds inoculated with R. opacus PD360 showed increased Se uptake (up to 1,200 mg Se.kg-1 DW). In addition, bioconcentration and translocation factors were greater than one. The results indicate a synergistic effect between R. opacus PD630 and B. oleracea for Se phytoextraction from polluted soils.
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