2018
DOI: 10.1080/15592324.2018.1554468
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Contribution of KUPs to potassium and cesium accumulation appears complementary in Arabidopsis

Abstract: Cesium has no known beneficial effects on plants and while plants have the ability to absorb it through the root system, plant growth is retarded at high concentrations. Recently, we have shown that potassium influx through a potassium channel complex AKT1-KC1 is inhibited by cesium in Arabidopsis thaliana and the resultant reduction in potassium accumulation in the plant is the primary cause of retarded growth. By contrast, a major potassium transporter, HAK5 whose function is crucial under potassium deficien… Show more

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Cited by 12 publications
(18 citation statements)
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“…In the same condition, disruption of KUP9 had the opposite effect resulting in a higher accumulation of Cs + than the wild-type (around 30% more). This is consistent with a recently published experiment performed in liquid media containing 500 µM K + and 300 µM Cs + showing that kup9-1 seedlings accumulate more Cs + than the wild-type Col-0 (Adams, Miyazaki & Shin, 2019).…”
Section: Resultssupporting
confidence: 93%
“…In the same condition, disruption of KUP9 had the opposite effect resulting in a higher accumulation of Cs + than the wild-type (around 30% more). This is consistent with a recently published experiment performed in liquid media containing 500 µM K + and 300 µM Cs + showing that kup9-1 seedlings accumulate more Cs + than the wild-type Col-0 (Adams, Miyazaki & Shin, 2019).…”
Section: Resultssupporting
confidence: 93%
“…It is also possible that higher Cs + translocation to the shoot in wild-type plants is later compensated by transport systems that re-translocate Cs + back into the root and environment. This may correspond with the data published by Adams, Miyazaki and Shin [ 12 ], who did not detect differences in long-term Cs + accumulation between kup7 and wild-type plants. As summarized by [ 8 ] and [ 39 ], the majority of Cs + delivered to the shoot can be recirculated to the roots via the phloem.…”
Section: Discussionsupporting
confidence: 92%
“…These data are in agreement with the role of AtKUP7 in potassium transport to the shoot [ 28 ]. In contrast, no difference in long-term Cs + accumulation between A. thaliana kup7 and wild type seedlings were found after 7 days of cultivation in the study of [ 12 ]. This can, however, be explained by relatively high K + availability used in their experiment (300 µM CsCl + 500 µM KCl), which might prevent significant involvement of AtKUP7 in K + or Cs + accumulation.…”
Section: Discussionmentioning
confidence: 96%
See 1 more Smart Citation
“…Under the same condition, disruption of KUP9 had the opposite effect resulting in a higher accumulation of Cs + than the wild-type (around 30% more). This is consistent with a recently published experiment performed in liquid media containing 500 μM K + and 300 μM Cs + showing that kup9-1 seedlings accumulate more Cs + than the wild-type Col-0 (Adams et al 2019).…”
Section: Kup9 Mutants Accumulate More Cs +supporting
confidence: 93%