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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1111/nph.16918
|2 doi
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|a pubmed25n1048.xml
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|a (NLM)32901916
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Coleto, Inmaculada
|e verfasserin
|4 aut
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|a Arabidopsis thaliana transcription factors MYB28 and MYB29 shape ammonium stress responses by regulating Fe homeostasis
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 14.05.2021
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|a Date Revised 14.05.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2020 The Authors New Phytologist © 2020 New Phytologist Trust.
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|a Although ammonium (NH4+ ) is a key intermediate of plant nitrogen metabolism, high concentrations of NH4+ in the soil provoke physiological disorders that lead to the development of stress symptoms. Ammonium nutrition was shown to induce the accumulation of glucosinolates (GSLs) in leaves of different Brassicaceae species. To further understand the link between ammonium nutrition and GSLs, we analysed the ammonium stress response of Arabidopsis mutants impaired in GSL metabolic pathway. We showed that the MYB28 and MYB29 double mutant (myb28myb29), which is almost deprived of aliphatic GSLs, is highly hypersensitive to ammonium nutrition. Moreover, we evidenced that the stress symptoms developed were not a consequence of the lack of aliphatic GSLs. Transcriptomic analysis highlighted the induction of an iron (Fe) deficiency response in myb28myb29 under ammonium nutrition. Consistently, ammonium-grown myb28myb29 plants showed altered Fe accumulation and homeostasis. Interestingly, we showed overall that growing Arabidopsis with increased Fe availability relieved ammonium stress symptoms and that this was associated with MYB28 and MYB29 expression. Taken together, our data indicated that the control of Fe homeostasis was crucial for the Arabidopsis response to ammonium nutrition and evidenced that MYB28 and MYB29 play a role in this control
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Arabidopsis thaliana
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|a abiotic stress
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|a ammonium
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|a glucosinolates
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|a iron
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|a nitrate
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|a nitrogen nutrition
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|a transcription factor
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|a Ammonium Compounds
|2 NLM
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|a Arabidopsis Proteins
|2 NLM
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|a Glucosinolates
|2 NLM
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| 650 |
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|a Myb29 protein, Arabidopsis
|2 NLM
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| 650 |
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|a Transcription Factors
|2 NLM
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| 650 |
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|a Histone Acetyltransferases
|2 NLM
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| 650 |
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|a EC 2.3.1.48
|2 NLM
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| 700 |
1 |
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|a Bejarano, Iraide
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Marín-Peña, Agustín Javier
|e verfasserin
|4 aut
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| 700 |
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|a Medina, Joaquín
|e verfasserin
|4 aut
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| 700 |
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|a Rioja, Cristina
|e verfasserin
|4 aut
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| 700 |
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|a Burow, Meike
|e verfasserin
|4 aut
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| 700 |
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|a Marino, Daniel
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1984
|g 229(2021), 2 vom: 20. Jan., Seite 1021-1035
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnas
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| 773 |
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|g volume:229
|g year:2021
|g number:2
|g day:20
|g month:01
|g pages:1021-1035
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|u http://dx.doi.org/10.1111/nph.16918
|3 Volltext
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