Abstract
We examined cytokinin and nitrate responsiveness in gene expression of five distinct response regulator homologs (ARR3-ARR7) in the leaves of nitrogen-starved Arabidopsis plants. The transcripts accumulated after spraying the shoots with t-zeatin. The induction of accumulation was highly specific for cytokinins. The transcripts also accumulated by supply of nitrate to the culture medium. These findings suggest that ARRs are involved in inorganic nitrogen signal transduction mediated by cytokinin as in the case of ZmCip1, a response regulator homolog recently identified in maize.
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Claims 4
Claim · model-written summary
t-zeatin spraying induced ARR3-ARR7 transcript accumulation in nitrogen-starved Arabidopsis leaves.
- Taxon
- Arabidopsis
Arabidopsise0 - Organ / stage
- leavese0
- Treatment
- spraying the shoots with t-zeatine0
- Gene
- ARR3-ARR7e0
- Outcome
- transcriptse0
- Direction
- accumulatede0
- Qualifier
- nitrogen-starvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gene expression of five distinct response regulator homologs (ARR3-ARR7) in the leaves of nitrogen-starved Arabidopsis plants. The transcripts accumulated after spraying the shoots with t-zeatin.”
Claim · model-written summary
Transcript accumulation induction was highly specific for cytokinins.
Not reportedTaxon
Verbatim
e0“The induction of accumulation was highly specific for cytokinins.”
t0“Arabidopsis”
Claim · model-written summary
Nitrate supply induced transcript accumulation.
Not reportedTaxonComparator
Verbatim
e0“The transcripts also accumulated by supply of nitrate to the culture medium.”
t0“Arabidopsis”
Claim · model-written summary
The authors suggest ARRs participate in cytokinin-mediated inorganic nitrogen signaling.
Not reportedTaxon
Verbatim
e0“These findings suggest that ARRs are involved in inorganic nitrogen signal transduction mediated by cytokinin”
t0“Arabidopsis”
The same questions in other papers
application · molecular: expression · ArabidopsisResults agree
3 papers in the same direction as this paper
- positive
- 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.