Abstract
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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Claims 7
Claim · model-written summary
The MYB28 and MYB29 double mutant was highly hypersensitive to ammonium nutrition.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianat0 - Material
- myb28myb29e0
- Gene
- MYB28 and MYB29e0
- Outcome
- hypersensitive to ammonium nutritione0
- Direction
- hypersensitivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the MYB28 and MYB29 double mutant (myb28myb29), which is almost deprived of aliphatic GSLs, is highly hypersensitive to ammonium nutrition”
t0“Arabidopsis thaliana”
Claim · model-written summary
The mutant stress symptoms were not caused by lack of aliphatic GSLs.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Outcome
- stress symptomse0
- Qualifier
- not a consequence of the lack of aliphatic GSLse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the stress symptoms developed were not a consequence of the lack of aliphatic GSLs”
t0“Arabidopsis thaliana”
Claim · model-written summary
Ammonium nutrition induced an iron deficiency response in the double mutant transcriptome.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Material
- myb28myb29e0
- Treatment
- ammonium nutritione0
- Outcome
- iron (Fe) deficiency responsee0
- Direction
- inductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transcriptomic analysis highlighted the induction of an iron (Fe) deficiency response in myb28myb29 under ammonium nutrition”
t0“Arabidopsis thaliana”
Claim · model-written summary
Ammonium grown double mutant plants had altered iron accumulation and homeostasis.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Material
- myb28myb29e0
- Outcome
- Fe accumulation and homeostasise0
- Direction
- alterede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ammonium-grown myb28myb29 plants showed altered Fe accumulation and homeostasis”
t0“Arabidopsis thaliana”
Claim · model-written summary
Increased iron availability relieved ammonium stress symptoms in Arabidopsis.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- increased Fe availabilitye0
- Outcome
- ammonium stress symptomse0
- Direction
- relievede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growing Arabidopsis with increased Fe availability relieved ammonium stress symptoms”
Claim · model-written summary
Relief of ammonium stress with increased Fe availability was associated with MYB28 and MYB29 expression.
- Taxon
- ArabidopsisArabidopsise0
- Gene
- MYB28 and MYB29e0
- Outcome
- ammonium stress symptomse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growing Arabidopsis with increased Fe availability relieved ammonium stress symptoms and that this was associated with MYB28 and MYB29 expression”
Claim · model-written summary
The authors infer that MYB28 and MYB29 control Fe homeostasis relevant to the ammonium response.
- Taxon
- ArabidopsisArabidopsise0
- Gene
- MYB28 and MYB29e0
- Outcome
- Fe homeostasise0
- Qualifier
- crucial for the Arabidopsis response to ammonium nutritione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
The same questions in other papers
iron atom · disease · ArabidopsisPositive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.