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Rice plants respond to ammonium‐stress by adopting a helical root growth pattern

(2020) PLANT JOURNAL. 104(4). p.1023-1037
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Abstract
High levels of ammonium nutrition reduce plant growth and different plant species have developed distinct strategies to maximize ammonium acquisition while alleviate ammonium toxicity through modulating root growth. Up to now, the mechanism underlying plant tolerance or sensitivity towards ammonium remain unclear. Rice uses ammonium as its main N source. Here we show that ammonium supply restricts rice root elongation and induces a helical growth pattern, which is attributed to root acidification resulting from ammonium uptake. Ammonium-induced low pH triggers asymmetric auxin distribution in rice root tips through changes in auxin signaling, thereby inducing a helical growth response. Blocking auxin signaling completely inhibited this root response. In contrast, this root response is not activated in ammonium-treated Arabidopsis. Acidification of Arabidopsis roots leads to the protonation of IAA, and dampening the intracellular auxin signaling levels that are required for maintaining root growth. Our study suggests a different mode of action by ammonium on the root pattern and auxin response machinery in rice versus Arabidopsis, and the rice-specific helical root response towards ammonium is an expression of the ability of rice in moderating auxin signaling and root growth to utilize ammonium while confronting acidic stress.
Keywords
Arabidopsis thaliana, Oryza.sativa L., Ammonium, acidic stress, auxin, helical root response, root elongation, AUXIN TRANSPORT, ARABIDOPSIS, GRAVITROPISM, GENE, INHIBITION, ACID, ADAPTATION, NITROGEN, CELL, ACCUMULATION

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MLA
Jia, Letian, et al. “Rice Plants Respond to Ammonium‐stress by Adopting a Helical Root Growth Pattern.” PLANT JOURNAL, vol. 104, no. 4, 2020, pp. 1023–37, doi:10.1111/tpj.14978.
APA
Jia, L., Xie, Y., Wang, Z., Luo, L., Zhang, C., Pélissier, P.-M., … Xuan, W. (2020). Rice plants respond to ammonium‐stress by adopting a helical root growth pattern. PLANT JOURNAL, 104(4), 1023–1037. https://doi.org/10.1111/tpj.14978
Chicago author-date
Jia, Letian, Yuanming Xie, Zhen Wang, Long Luo, Chi Zhang, Pierre-Mathieu Pélissier, Boris Parizot, et al. 2020. “Rice Plants Respond to Ammonium‐stress by Adopting a Helical Root Growth Pattern.” PLANT JOURNAL 104 (4): 1023–37. https://doi.org/10.1111/tpj.14978.
Chicago author-date (all authors)
Jia, Letian, Yuanming Xie, Zhen Wang, Long Luo, Chi Zhang, Pierre-Mathieu Pélissier, Boris Parizot, Weicong Qi, Jing Zhang, Zhubing Hu, Hans Motte, Luo Le, Guohua Xu, Tom Beeckman, and Wei Xuan. 2020. “Rice Plants Respond to Ammonium‐stress by Adopting a Helical Root Growth Pattern.” PLANT JOURNAL 104 (4): 1023–1037. doi:10.1111/tpj.14978.
Vancouver
1.
Jia L, Xie Y, Wang Z, Luo L, Zhang C, Pélissier P-M, et al. Rice plants respond to ammonium‐stress by adopting a helical root growth pattern. PLANT JOURNAL. 2020;104(4):1023–37.
IEEE
[1]
L. Jia et al., “Rice plants respond to ammonium‐stress by adopting a helical root growth pattern,” PLANT JOURNAL, vol. 104, no. 4, pp. 1023–1037, 2020.
@article{8674205,
  abstract     = {{High levels of ammonium nutrition reduce plant growth and different plant species have developed distinct strategies to maximize ammonium acquisition while alleviate ammonium toxicity through modulating root growth. Up to now, the mechanism underlying plant tolerance or sensitivity towards ammonium remain unclear. Rice uses ammonium as its main N source. Here we show that ammonium supply restricts rice root elongation and induces a helical growth pattern, which is attributed to root acidification resulting from ammonium uptake. Ammonium-induced low pH triggers asymmetric auxin distribution in rice root tips through changes in auxin signaling, thereby inducing a helical growth response. Blocking auxin signaling completely inhibited this root response. In contrast, this root response is not activated in ammonium-treated Arabidopsis. Acidification of Arabidopsis roots leads to the protonation of IAA, and dampening the intracellular auxin signaling levels that are required for maintaining root growth. Our study suggests a different mode of action by ammonium on the root pattern and auxin response machinery in rice versus Arabidopsis, and the rice-specific helical root response towards ammonium is an expression of the ability of rice in moderating auxin signaling and root growth to utilize ammonium while confronting acidic stress.}},
  author       = {{Jia, Letian and Xie, Yuanming and Wang, Zhen and Luo, Long and Zhang, Chi and Pélissier, Pierre-Mathieu and Parizot, Boris and Qi, Weicong and Zhang, Jing and Hu, Zhubing and Motte, Hans and Le, Luo and Xu, Guohua and Beeckman, Tom and Xuan, Wei}},
  issn         = {{0960-7412}},
  journal      = {{PLANT JOURNAL}},
  keywords     = {{Arabidopsis thaliana,Oryza.sativa L.,Ammonium,acidic stress,auxin,helical root response,root elongation,AUXIN TRANSPORT,ARABIDOPSIS,GRAVITROPISM,GENE,INHIBITION,ACID,ADAPTATION,NITROGEN,CELL,ACCUMULATION}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{1023--1037}},
  title        = {{Rice plants respond to ammonium‐stress by adopting a helical root growth pattern}},
  url          = {{http://dx.doi.org/10.1111/tpj.14978}},
  volume       = {{104}},
  year         = {{2020}},
}

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