Magnesium promotes root growth and increases aluminum tolerance via modulation of nitric oxide production in Arabidopsis

Dongxu Li, Wenna Ma, Jian Wei, Yawen Mao, Zhongping Peng, Jiarong Zhang, Xiangying Kong, Qinqin Han, Wei Fan, Ye Yang, Jianghua Chen, Liangquan Wu, Zed Rengel, Xiuming Cui, Qi Chen

Research output: Contribution to journalArticle

Abstract

Background and aims: Aluminum (Al) toxicity and magnesium (Mg) deficiency often coexist in acidic soils. Nitric oxide (NO) is involved in diverse physiological processes and stress responses. Here, we investigated the role of NO in Mg-mediated root growth promotion and Al tolerance in Arabidopsis. Methods: Physiological and pharmacological methods together with molecular and genetic analyses were used. Results: Al toxicity- and Mg deficiency-induced NO production contributed to inhibition of primary root growth. In contrast, Mg supply promoted root growth associated with decreasing NO production under Al stress and/or Mg deficiency conditions. Magnesium decreased the activities and expression of the genes related to NO biosynthesis enzymes in Col-0 roots. The NO-associated protein 1 mutant noa1 and the nitrate reductase mutant nia1nia2 with impaired NO production showed Al toxicity- and Mg deficiency-insensitive phenotypes, further confirming involvement of NO in Mg-mediated root growth promotion and alleviation of Al toxicity. Conclusions: Taken together, our results suggested that Mg-mediated enhancement of root growth and Al tolerance is associated with altering NO production in Arabidopsis.

Original languageEnglish
JournalPlant and Soil
DOIs
Publication statusE-pub ahead of print - 27 Aug 2019

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nitric oxide
aluminum
magnesium
root growth
tolerance
Arabidopsis
toxicity
growth promotion
mutants
nitrate reductase
acid soils
phenotype
stress response
biosynthesis
enzyme
nitrate
gene expression
protein
gene
enzymes

Cite this

Li, Dongxu ; Ma, Wenna ; Wei, Jian ; Mao, Yawen ; Peng, Zhongping ; Zhang, Jiarong ; Kong, Xiangying ; Han, Qinqin ; Fan, Wei ; Yang, Ye ; Chen, Jianghua ; Wu, Liangquan ; Rengel, Zed ; Cui, Xiuming ; Chen, Qi. / Magnesium promotes root growth and increases aluminum tolerance via modulation of nitric oxide production in Arabidopsis. In: Plant and Soil. 2019.
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title = "Magnesium promotes root growth and increases aluminum tolerance via modulation of nitric oxide production in Arabidopsis",
abstract = "Background and aims: Aluminum (Al) toxicity and magnesium (Mg) deficiency often coexist in acidic soils. Nitric oxide (NO) is involved in diverse physiological processes and stress responses. Here, we investigated the role of NO in Mg-mediated root growth promotion and Al tolerance in Arabidopsis. Methods: Physiological and pharmacological methods together with molecular and genetic analyses were used. Results: Al toxicity- and Mg deficiency-induced NO production contributed to inhibition of primary root growth. In contrast, Mg supply promoted root growth associated with decreasing NO production under Al stress and/or Mg deficiency conditions. Magnesium decreased the activities and expression of the genes related to NO biosynthesis enzymes in Col-0 roots. The NO-associated protein 1 mutant noa1 and the nitrate reductase mutant nia1nia2 with impaired NO production showed Al toxicity- and Mg deficiency-insensitive phenotypes, further confirming involvement of NO in Mg-mediated root growth promotion and alleviation of Al toxicity. Conclusions: Taken together, our results suggested that Mg-mediated enhancement of root growth and Al tolerance is associated with altering NO production in Arabidopsis.",
keywords = "Aluminum toxicity, Arabidopsis, Magnesium, Nitric oxide, Root growth",
author = "Dongxu Li and Wenna Ma and Jian Wei and Yawen Mao and Zhongping Peng and Jiarong Zhang and Xiangying Kong and Qinqin Han and Wei Fan and Ye Yang and Jianghua Chen and Liangquan Wu and Zed Rengel and Xiuming Cui and Qi Chen",
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Li, D, Ma, W, Wei, J, Mao, Y, Peng, Z, Zhang, J, Kong, X, Han, Q, Fan, W, Yang, Y, Chen, J, Wu, L, Rengel, Z, Cui, X & Chen, Q 2019, 'Magnesium promotes root growth and increases aluminum tolerance via modulation of nitric oxide production in Arabidopsis' Plant and Soil. https://doi.org/10.1007/s11104-019-04274-9

Magnesium promotes root growth and increases aluminum tolerance via modulation of nitric oxide production in Arabidopsis. / Li, Dongxu; Ma, Wenna; Wei, Jian; Mao, Yawen; Peng, Zhongping; Zhang, Jiarong; Kong, Xiangying; Han, Qinqin; Fan, Wei; Yang, Ye; Chen, Jianghua; Wu, Liangquan; Rengel, Zed; Cui, Xiuming; Chen, Qi.

In: Plant and Soil, 27.08.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Magnesium promotes root growth and increases aluminum tolerance via modulation of nitric oxide production in Arabidopsis

AU - Li, Dongxu

AU - Ma, Wenna

AU - Wei, Jian

AU - Mao, Yawen

AU - Peng, Zhongping

AU - Zhang, Jiarong

AU - Kong, Xiangying

AU - Han, Qinqin

AU - Fan, Wei

AU - Yang, Ye

AU - Chen, Jianghua

AU - Wu, Liangquan

AU - Rengel, Zed

AU - Cui, Xiuming

AU - Chen, Qi

PY - 2019/8/27

Y1 - 2019/8/27

N2 - Background and aims: Aluminum (Al) toxicity and magnesium (Mg) deficiency often coexist in acidic soils. Nitric oxide (NO) is involved in diverse physiological processes and stress responses. Here, we investigated the role of NO in Mg-mediated root growth promotion and Al tolerance in Arabidopsis. Methods: Physiological and pharmacological methods together with molecular and genetic analyses were used. Results: Al toxicity- and Mg deficiency-induced NO production contributed to inhibition of primary root growth. In contrast, Mg supply promoted root growth associated with decreasing NO production under Al stress and/or Mg deficiency conditions. Magnesium decreased the activities and expression of the genes related to NO biosynthesis enzymes in Col-0 roots. The NO-associated protein 1 mutant noa1 and the nitrate reductase mutant nia1nia2 with impaired NO production showed Al toxicity- and Mg deficiency-insensitive phenotypes, further confirming involvement of NO in Mg-mediated root growth promotion and alleviation of Al toxicity. Conclusions: Taken together, our results suggested that Mg-mediated enhancement of root growth and Al tolerance is associated with altering NO production in Arabidopsis.

AB - Background and aims: Aluminum (Al) toxicity and magnesium (Mg) deficiency often coexist in acidic soils. Nitric oxide (NO) is involved in diverse physiological processes and stress responses. Here, we investigated the role of NO in Mg-mediated root growth promotion and Al tolerance in Arabidopsis. Methods: Physiological and pharmacological methods together with molecular and genetic analyses were used. Results: Al toxicity- and Mg deficiency-induced NO production contributed to inhibition of primary root growth. In contrast, Mg supply promoted root growth associated with decreasing NO production under Al stress and/or Mg deficiency conditions. Magnesium decreased the activities and expression of the genes related to NO biosynthesis enzymes in Col-0 roots. The NO-associated protein 1 mutant noa1 and the nitrate reductase mutant nia1nia2 with impaired NO production showed Al toxicity- and Mg deficiency-insensitive phenotypes, further confirming involvement of NO in Mg-mediated root growth promotion and alleviation of Al toxicity. Conclusions: Taken together, our results suggested that Mg-mediated enhancement of root growth and Al tolerance is associated with altering NO production in Arabidopsis.

KW - Aluminum toxicity

KW - Arabidopsis

KW - Magnesium

KW - Nitric oxide

KW - Root growth

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U2 - 10.1007/s11104-019-04274-9

DO - 10.1007/s11104-019-04274-9

M3 - Article

JO - Plant and Soil: An International Journal on Plant-Soil Relationships

JF - Plant and Soil: An International Journal on Plant-Soil Relationships

SN - 0032-079X

ER -