<sup>134</sup>Cs Uptake and Growth at Various Cs<sup>+</sup> and K<sup>+</sup> Levels in <i>Arabidopsis</i> <i>AtKUP7</i> Mutants
Radiocaesium is a pollutant with a high risk for the environment, agricultural production, and human health. It is mobile in ecosystems and can be taken up by plants via potassium transporters. In this study, we focused on the role of potassium transporter AtKUP7 of the KT/HAK/KUP family in Cs<su...
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MDPI AG
2020-11-01
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| Series: | Plants |
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| author | Marek Šustr Tereza Doksanská Barbora Doležalová Aleš Soukup Edita Tylová |
| author_facet | Marek Šustr Tereza Doksanská Barbora Doležalová Aleš Soukup Edita Tylová |
| author_sort | Marek Šustr |
| collection | DOAJ |
| description | Radiocaesium is a pollutant with a high risk for the environment, agricultural production, and human health. It is mobile in ecosystems and can be taken up by plants via potassium transporters. In this study, we focused on the role of potassium transporter AtKUP7 of the KT/HAK/KUP family in Cs<sup>+</sup> and K<sup>+</sup> uptake by plants and in plant tolerance to caesium toxicity. We detected that <i>Arabidopsis</i><i>kup7</i> mutant accumulates significantly lower amounts of <sup>134</sup>Cs in the root (86%) and in the shoot (69%) compared to the wild-type. On the other hand ability of the mutant to grow on media with toxic (100 and 200 µM) concentrations of Cs<sup>+</sup> was not changed; moreover its growth was not impaired on low K<sup>+</sup>. We further investigated another mutant line in <i>AtKUP7</i> and found that the growth phenotype of the <i>kup7</i> mutants in K<sup>+</sup> deficient conditions is much milder than previously published. Also, their accumulation of K<sup>+</sup> in shoots is hindered only by severe potassium shortage. |
| first_indexed | 2024-03-10T14:58:46Z |
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| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-10T14:58:46Z |
| publishDate | 2020-11-01 |
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| spelling | doaj.art-58aabef448bd4d3fb2eb1540660b3a472023-11-20T20:20:38ZengMDPI AGPlants2223-77472020-11-01911152510.3390/plants9111525<sup>134</sup>Cs Uptake and Growth at Various Cs<sup>+</sup> and K<sup>+</sup> Levels in <i>Arabidopsis</i> <i>AtKUP7</i> MutantsMarek Šustr0Tereza Doksanská1Barbora Doležalová2Aleš Soukup3Edita Tylová4Department of Experimental Plant Biology, Faculty of Science, Charles University, Viničná 5, 128 44 Prague 2, Czech RepublicNational Radiation Protection Institute, Bartoškova 28, 140 00 Prague 4, Czech RepublicDepartment of Experimental Plant Biology, Faculty of Science, Charles University, Viničná 5, 128 44 Prague 2, Czech RepublicDepartment of Experimental Plant Biology, Faculty of Science, Charles University, Viničná 5, 128 44 Prague 2, Czech RepublicDepartment of Experimental Plant Biology, Faculty of Science, Charles University, Viničná 5, 128 44 Prague 2, Czech RepublicRadiocaesium is a pollutant with a high risk for the environment, agricultural production, and human health. It is mobile in ecosystems and can be taken up by plants via potassium transporters. In this study, we focused on the role of potassium transporter AtKUP7 of the KT/HAK/KUP family in Cs<sup>+</sup> and K<sup>+</sup> uptake by plants and in plant tolerance to caesium toxicity. We detected that <i>Arabidopsis</i><i>kup7</i> mutant accumulates significantly lower amounts of <sup>134</sup>Cs in the root (86%) and in the shoot (69%) compared to the wild-type. On the other hand ability of the mutant to grow on media with toxic (100 and 200 µM) concentrations of Cs<sup>+</sup> was not changed; moreover its growth was not impaired on low K<sup>+</sup>. We further investigated another mutant line in <i>AtKUP7</i> and found that the growth phenotype of the <i>kup7</i> mutants in K<sup>+</sup> deficient conditions is much milder than previously published. Also, their accumulation of K<sup>+</sup> in shoots is hindered only by severe potassium shortage.https://www.mdpi.com/2223-7747/9/11/1525caesiumroot growthpotassiumKT/HAK/KUPAtKUP7 |
| spellingShingle | Marek Šustr Tereza Doksanská Barbora Doležalová Aleš Soukup Edita Tylová <sup>134</sup>Cs Uptake and Growth at Various Cs<sup>+</sup> and K<sup>+</sup> Levels in <i>Arabidopsis</i> <i>AtKUP7</i> Mutants Plants caesium root growth potassium KT/HAK/KUP AtKUP7 |
| title | <sup>134</sup>Cs Uptake and Growth at Various Cs<sup>+</sup> and K<sup>+</sup> Levels in <i>Arabidopsis</i> <i>AtKUP7</i> Mutants |
| title_full | <sup>134</sup>Cs Uptake and Growth at Various Cs<sup>+</sup> and K<sup>+</sup> Levels in <i>Arabidopsis</i> <i>AtKUP7</i> Mutants |
| title_fullStr | <sup>134</sup>Cs Uptake and Growth at Various Cs<sup>+</sup> and K<sup>+</sup> Levels in <i>Arabidopsis</i> <i>AtKUP7</i> Mutants |
| title_full_unstemmed | <sup>134</sup>Cs Uptake and Growth at Various Cs<sup>+</sup> and K<sup>+</sup> Levels in <i>Arabidopsis</i> <i>AtKUP7</i> Mutants |
| title_short | <sup>134</sup>Cs Uptake and Growth at Various Cs<sup>+</sup> and K<sup>+</sup> Levels in <i>Arabidopsis</i> <i>AtKUP7</i> Mutants |
| title_sort | sup 134 sup cs uptake and growth at various cs sup sup and k sup sup levels in i arabidopsis i i atkup7 i mutants |
| topic | caesium root growth potassium KT/HAK/KUP AtKUP7 |
| url | https://www.mdpi.com/2223-7747/9/11/1525 |
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