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- W2369439122 abstract "K + plays an important role in the process of protecting plant species from NH4+ toxicity. In this article, lateral root (LR) development of Arabidopsis wild type (Col-0) and amos2 mutant (which is overly sensitive to NH4+ supply) was analyzed under excessive NH4+(30 or 40 mmol·L-1 ) with different concentrations of K+(0.6, 1.2 and 5.0 mmol·L-1) added in agar medium. The results showed that high NH4+ could inhibit the relative number of LRs of amos2 by 85%–90% on the low external K+(0.6 or 1.2 mmol·L-1), it was twice higher than that of Col-0. However, the LR development of Arabidopsis under NH4+ stress could be recovered by higher external K+ (5.0 mmol·L-1), especially to amos2. Furthermore, high NH4+ had more significant inhibition on the LR development of distal portion than that of proximal portion. The LRs of amos2 had been more significantly inhibited by high NH4+ at the initial phase of treatment than that of Col-0, and there was also an obvious time delay on the LR development of amos2 under high NH4+ and low external K+. Higher external K+(5.0 mmol·L-1 ) could relieve the time delay of LR development under NH4+ stress. All the results indicate that the AMOS2 locus plays an important role in the resistance to high NH4+, particularly at low external K+ , and the decrease in NH4+/K+ ratio is a vital cause for plants to resist NH4+ toxicity." @default.
- W2369439122 created "2016-06-24" @default.
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- W2369439122 date "2013-01-01" @default.
- W2369439122 modified "2023-09-28" @default.
- W2369439122 title "The Effects of Different Concentrations of NH_4~+ and K~+ Treatments on Lateral Root Development of Arabidopsis amos2 Mutant" @default.
- W2369439122 hasPublicationYear "2013" @default.
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