Abstract
The expression of the six rice ASR genes is differentially regulated in a tissue-dependent manner according to environmental conditions and reproductive stages. OsASR1 and OsASR3 are the most abundant and are found in most tissues; they are enriched in the leaves and roots, respectively. Coexpression analysis of OsASR1 and OsASR3 and a comparison of the cis-acting elements upstream of OsASR1 and OsASR3 suggested that their expression is regulated in common by abiotic stresses but differently regulated by hormone and sugar signals. The results of quantitative real-time PCR analyses of OsASR1 and OsASR3 expression under various conditions further support this model. The expression of both OsASR1 and OsASR3 was induced by drought stress, which is a major regulator of the expression of all ASR genes in rice. In contrast, ABA is not a common regulator of the expression of these genes. OsASR1 transcription was highly induced by ABA, whereas OsASR3 transcription was strongly induced by GA. In addition, OsASR1 and OsASR3 expression was significantly induced by sucrose and sucrose/glucose treatments, respectively. The induction of gene expression in response to these specific hormone and sugar signals was primarily observed in the major target tissues of these genes (i.e., OsASR1 in leaves and OsASR3 in roots). Our data also showed that the overexpression of either OsASR1 or OsASR3 in transgenic rice plants increased their tolerance to drought and cold stress. Taken together, our results revealed that the transcriptional control of different rice ASR genes exhibit different tissue-dependent sugar and hormone-sensitivities.
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Claims 12
Claim · model-written summary
Expression of the six rice ASR genes is regulated in a tissue-dependent manner according to environmental conditions and reproductive stages.
- Taxon
- rice
Oryza sativae0 - Gene
- rice ASR genese0
- Outcome
- differentially regulated in a tissue-dependent mannere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The expression of the six rice ASR genes is differentially regulated in a tissue-dependent manner according to environmental conditions and reproductive stages”
Claim · model-written summary
OsASR1 and OsASR3 are the most abundant of the six rice ASR genes and are found in most tissues.
- Taxon
- riceOryza sativat0
- Gene
- OsASR1 and OsASR3e0
- Outcome
- most abundante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OsASR1 and OsASR3 are the most abundant and are found in most tissues”
t0“Rice ASR1 and ASR3”
Claim · model-written summary
OsASR1 is enriched in rice leaves and OsASR3 in roots.
- Taxon
- riceOryza sativat0
- Organ / stage
- leaves and rootse1
- Gene
- OsASR1 and OsASR3e0
- Outcome
- enrichede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OsASR1 and OsASR3 are the most abundant”
e1“they are enriched in the leaves and roots, respectively”
t0“Rice ASR1 and ASR3”
Claim · model-written summary
Coexpression analysis and cis-element comparison suggested that OsASR1 and OsASR3 expression is regulated in common by abiotic stresses but differently by hormone and sugar signals.
- Taxon
- riceOryza sativat0
- Gene
- OsASR1 and OsASR3e0
- Outcome
- expressione0
- Qualifier
- regulated in common by abiotic stresses but differently regulated by hormone and sugar signalse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Coexpression analysis of OsASR1 and OsASR3 and a comparison of the cis-acting elements upstream of OsASR1 and OsASR3 suggested that their expression is regulated in common by abiotic stresses but differently regulated by hormone and sugar signals”
t0“Rice ASR1 and ASR3”
Claim · model-written summary
Expression of both OsASR1 and OsASR3 was induced by drought stress.
- Taxon
- riceOryza sativat0
- Treatment
- drought stresse0
- Gene
- OsASR1 and OsASR3e0
- Outcome
- expressione0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The expression of both OsASR1 and OsASR3 was induced by drought stress”
t0“Rice ASR1 and ASR3”
Claim · model-written summary
ABA is not a common regulator of the expression of the rice ASR genes.
- Taxon
- riceOryza sativat0
- Treatment
- ABAe0
- Outcome
- expression of these genese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA is not a common regulator of the expression of these genes”
t0“Rice ASR1 and ASR3”
Claim · model-written summary
OsASR1 transcription was highly induced by ABA.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OsASR1 transcription was highly induced by ABA”
t0“Rice ASR1 and ASR3”
Claim · model-written summary
OsASR3 transcription was strongly induced by GA.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OsASR3 transcription was strongly induced by GA”
t0“Rice ASR1 and ASR3”
Claim · model-written summary
OsASR1 expression was significantly induced by sucrose.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OsASR1 and OsASR3 expression was significantly induced by sucrose and sucrose/glucose treatments, respectively”
t0“Rice ASR1 and ASR3”
Claim · model-written summary
OsASR3 expression was significantly induced by sucrose/glucose treatment.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OsASR1 and OsASR3 expression was significantly induced by sucrose and sucrose/glucose treatments, respectively”
t0“Rice ASR1 and ASR3”
Claim · model-written summary
Induction by the hormone and sugar signals was mainly observed in the major target tissues, OsASR1 in leaves and OsASR3 in roots.
- Taxon
- riceOryza sativat0
- Organ / stage
- major target tissuese0
- Gene
- OsASR1 in leaves and OsASR3 in rootse1
- Outcome
- induction of gene expressione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The induction of gene expression in response to these specific hormone and sugar signals was primarily observed in the major target tissues of these genes”
e1“OsASR1 in leaves and OsASR3 in roots”
t0“Rice ASR1 and ASR3”
Claim · model-written summary
Overexpression of either OsASR1 or OsASR3 in transgenic rice increased tolerance to drought and cold stress.
- Taxon
- riceOryza sativae0
- Treatment
- overexpression of either OsASR1 or OsASR3e0
- Gene
- OsASR1 or OsASR3e0
- Outcome
- tolerance to drought and cold stresse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the overexpression of either OsASR1 or OsASR3 in transgenic rice plants increased their tolerance to drought and cold stress”
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