Contribution of Root Hair Development to Sulfate Uptake in Arabidopsis
AbstractRoot hairs often contribute to nutrient uptake from environments, but the contribution varies among nutrients. In Arabidopsis, two high-affinity sulfate transporters, SULTR1;1 and SULTR1;2, are responsible for sulfate uptake by roots. Their increased expression under sulfur deficiency (−S) stimulates sulfate uptake. Inspired by the higher and lower expression, respectively, of SULTR1;1 in mutants with more (werwolf [wer]) and fewer (caprice [cpc]) root hairs, we examined the contribution of root hairs to sulfate uptake. Sulfate uptake rates were similar among plant lines under both sulfur sufficiency (+S) and −S. Under −S, the expression of SULTR1;1 and SULTR1;2 was negatively correlated with the number of root hairs. These results suggest that both −S-induced SULTR expression and sulfate uptake rates were independent of the number of root hairs. In addition, we observed (1) a negative correlation between primary root lengths and number of root hairs and (2) a greater number of root hairs under −S than under +S. These observations suggested that under both +S and −S, sulfate uptake was influenced by the root biomass rather than the number of root hairs. View Full-Text
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Kimura, Y.; Ushiwatari, T.; Suyama, A.; Tominaga-Wada, R.; Wada, T.; Maruyama-Nakashita, A. Contribution of Root Hair Development to Sulfate Uptake in Arabidopsis. Plants 2019, 8, 106.
Kimura Y, Ushiwatari T, Suyama A, Tominaga-Wada R, Wada T, Maruyama-Nakashita A. Contribution of Root Hair Development to Sulfate Uptake in Arabidopsis. Plants. 2019; 8(4):106.Chicago/Turabian Style
Kimura, Yuki; Ushiwatari, Tsukasa; Suyama, Akiko; Tominaga-Wada, Rumi; Wada, Takuji; Maruyama-Nakashita, Akiko. 2019. "Contribution of Root Hair Development to Sulfate Uptake in Arabidopsis." Plants 8, no. 4: 106.
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