Abstract
Abstract To gain insight into the coordination of gene expression profiles under abscisic acid (ABA) and H 2 O 2 applications, global changes in gene expression in response to ABA and H 2 O 2 in Arabidopsis seedlings were investigated using GeneChip (Santa Clara, CA, USA) arrays. Among over 24 000 genes present in the arrays, 459 transcripts were found to be significantly increased, whereas another 221 decreased following H 2 O 2 treatment compared with control. Similar to treatment with H 2 O 2 , ABA treatment elevated the transcription of 391 genes and repressed that of 322 genes. One hundred and forty‐three upregulated genes and 75 downregulated genes were shared between the two treatments and these genes were mainly involved in metabolism, signal transduction, transcription, defense, and resistance. Only two genes, which encode an APETALA2/dehydration‐responsive element binding protein (AP2/DREBP) family transcriptional factor and a late embryogenesis‐abundant protein, were downregulated by H 2 O 2 , but upregulated by ABA. These results suggest that, similar to ABA, H 2 O 2 plays a global role in gene transcription of Arabidopsis seedlings. The transcriptional responses induced by the application of exogenous ABA and H 2 O 2 overlapped substantially. These two treatments regulated most of the downstream genes in a coordinated manner. (Managing editor: Li‐Hui Zhao)
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Claims 7
Claim · model-written summary
H2O2 increased 459 transcripts significantly.
- Taxon
- Arabidopsis
Arabidopsise1 - Treatment
- H 2 O 2 treatmente0
- Outcome
- transcriptse0
- Direction
- increasede0
- Value
- 459 transcriptse0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“459 transcripts were found to be significantly increased, whereas another 221 decreased following H 2 O 2 treatment compared with control”
e1“in Arabidopsis seedlings were investigated”
Claim · model-written summary
H2O2 decreased 221 transcripts.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- H 2 O 2 treatmente0
- Outcome
- transcriptse2
- Direction
- decreasede0
- Value
- 221e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“another 221 decreased following H 2 O 2 treatment compared with control”
e1“in Arabidopsis seedlings were investigated”
e2“459 transcripts were found to be significantly increased, whereas another 221 decreased following H 2 O 2 treatment compared with control”
Claim · model-written summary
ABA elevated transcription of 391 genes.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- ABA treatmente0
- Outcome
- transcriptione0
- Direction
- elevatede0
- Value
- 391 genese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA treatment elevated the transcription of 391 genes and repressed that of 322 genes”
e1“in Arabidopsis seedlings were investigated”
Claim · model-written summary
ABA repressed transcription of 322 genes.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- ABA treatmente0
- Outcome
- transcriptione0
- Direction
- repressede0
- Value
- 322 genese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA treatment elevated the transcription of 391 genes and repressed that of 322 genes”
e1“in Arabidopsis seedlings were investigated”
Claim · model-written summary
The two treatments shared 143 upregulated genes.
- Taxon
- ArabidopsisArabidopsise1
- Outcome
- upregulated genese0
- Value
- One hundred and forty‐threee0
- Comparator
- the two treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One hundred and forty‐three upregulated genes and 75 downregulated genes were shared between the two treatments”
e1“in Arabidopsis seedlings were investigated”
Claim · model-written summary
The two treatments shared 75 downregulated genes.
- Taxon
- ArabidopsisArabidopsise1
- Outcome
- downregulated genese0
- Value
- 75e0
- Comparator
- the two treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One hundred and forty‐three upregulated genes and 75 downregulated genes were shared between the two treatments”
e1“in Arabidopsis seedlings were investigated”
Claim · model-written summary
Two genes were downregulated by H2O2 but upregulated by ABA.
- Taxon
- ArabidopsisArabidopsise1
- Outcome
- genese0
- Value
- two genese0
- Qualifier
- downregulated by H 2 O 2 , but upregulated by ABAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only two genes, which encode an APETALA2/dehydration‐responsive element binding protein (AP2/DREBP) family transcriptional factor and a late embryogenesis‐abundant protein, were downregulated by H 2 O 2 , but upregulated by ABA”
e1“in Arabidopsis seedlings were investigated”
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