Abstract
An NAC-type transcription factor gene AtNAC2 was identified from Arabidopsis thaliana when expression patterns of the genes from a microarray analysis were examined. The AtNAC2 expression was induced by salt stress and this induction was reduced in magnitude in the transgenic Arabidopsis plants overexpressing tobacco ethylene receptor gene NTHK1. AtNAC2 is localized in the nucleus and has transcriptional activation activity. It can form a homodimer in yeast. AtNAC2 was highly expressed in roots and flowers, but less expressed in other organs examined. In addition to the salt induction, the AtNAC2 can also be induced by abscisic acid (ABA), ACC and NAA. The salt induction was enhanced in the ethylene overproducer mutant eto1-1, but suppressed in the ethylene-insensitive mutants etr1-1 and ein2-1, and in the auxin-insensitive mutant tir1-1when compared with that in wild-type plants. However, the salt induction of AtNAC2 was not significantly affected in the ABA-insensitive mutants abi2-1, abi3-1 and abi4-1. These results indicate that the salt response of AtNAC2 requires ethylene signaling and auxin signaling pathways but does not require ABI2, ABI3 and ABI4, intermediates of the ABA signaling pathway. Overexpression of AtNAC2 in transgenic Arabidopsis plants resulted in promotion of lateral root development. AtNAC2 also promoted or inhibited downstream gene expressions. These results indicate that AtNAC2 may be a transcription factor incorporating the environmental and endogenous stimuli into the process of plant lateral root development.
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Claims 14
Claim · model-written summary
AtNAC2 was identified in Arabidopsis.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae0 - Gene
- AtNAC2e0
- Outcome
- NAC-type transcription factor gene AtNAC2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“AtNAC2, a transcription factor downstream of ethylene and auxin signaling pathways, is involved in salt stress response and lateral root development”
e0“An NAC-type transcription factor gene AtNAC2 was identified from Arabidopsis thaliana”
Claim · model-written summary
Salt induced AtNAC2 expression.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- salt stresse0
- Gene
- AtNAC2e0
- Outcome
- AtNAC2 expressione0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“AtNAC2, a transcription factor downstream of ethylene and auxin signaling pathways, is involved in salt stress response and lateral root development”
e0“The AtNAC2 expression was induced by salt stress”
e1“An NAC-type transcription factor gene AtNAC2 was identified from Arabidopsis thaliana”
Claim · model-written summary
NTHK1 overexpression reduced salt induction of AtNAC2.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- overexpressing tobacco ethylene receptor gene NTHK1e0
- Gene
- NTHK1e0
- Outcome
- this inductione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“AtNAC2, a transcription factor downstream of ethylene and auxin signaling pathways, is involved in salt stress response and lateral root development”
e0“this induction was reduced in magnitude in the transgenic Arabidopsis plants overexpressing tobacco ethylene receptor gene NTHK1.”
Claim · model-written summary
AtNAC2 localized to the nucleus and had transcriptional activation activity.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Gene
- AtNAC2e0
- Outcome
- localized in the nucleus and has transcriptional activation activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“AtNAC2, a transcription factor downstream of ethylene and auxin signaling pathways, is involved in salt stress response and lateral root development”
e0“AtNAC2 is localized in the nucleus and has transcriptional activation activity.”
e1“An NAC-type transcription factor gene AtNAC2 was identified from Arabidopsis thaliana”
Claim · model-written summary
AtNAC2 formed a homodimer in yeast.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Gene
- AtNAC2t0
- Outcome
- form a homodimer in yeaste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“AtNAC2, a transcription factor downstream of ethylene and auxin signaling pathways, is involved in salt stress response and lateral root development”
e0“It can form a homodimer in yeast.”
e1“An NAC-type transcription factor gene AtNAC2 was identified from Arabidopsis thaliana”
Claim · model-written summary
AtNAC2 expression was high in roots and flowers.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Organ / stage
- roots and flowerse0
- Gene
- AtNAC2e0
- Outcome
- AtNAC2 was highly expressede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“AtNAC2, a transcription factor downstream of ethylene and auxin signaling pathways, is involved in salt stress response and lateral root development”
e0“AtNAC2 was highly expressed in roots and flowers, but less expressed in other organs examined.”
e1“An NAC-type transcription factor gene AtNAC2 was identified from Arabidopsis thaliana”
Claim · model-written summary
AtNAC2 expression was lower in other examined organs.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Gene
- AtNAC2t0
- Outcome
- less expressed in other organs examinede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“AtNAC2, a transcription factor downstream of ethylene and auxin signaling pathways, is involved in salt stress response and lateral root development”
e0“but less expressed in other organs examined.”
e1“An NAC-type transcription factor gene AtNAC2 was identified from Arabidopsis thaliana”
Claim · model-written summary
ABA, ACC and NAA induced AtNAC2.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Treatment
- abscisic acid (ABA), ACC and NAAe0
- Gene
- AtNAC2e0
- Outcome
- AtNAC2e0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“AtNAC2, a transcription factor downstream of ethylene and auxin signaling pathways, is involved in salt stress response and lateral root development”
e0“the AtNAC2 can also be induced by abscisic acid (ABA), ACC and NAA.”
e1“An NAC-type transcription factor gene AtNAC2 was identified from Arabidopsis thaliana”
Claim · model-written summary
Salt induction increased in eto1-1.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Material
- eto1-1e0
- Treatment
- salte0
- Outcome
- salt inductione0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“AtNAC2, a transcription factor downstream of ethylene and auxin signaling pathways, is involved in salt stress response and lateral root development”
e0“The salt induction was enhanced in the ethylene overproducer mutant eto1-1”
e1“An NAC-type transcription factor gene AtNAC2 was identified from Arabidopsis thaliana”
Claim · model-written summary
Salt induction was suppressed in ethylene and auxin insensitive mutants.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Material
- etr1-1 and ein2-1e0
- Treatment
- saltt0
- Outcome
- salt inductione2
- Direction
- suppressede0
- Comparator
- wild-type plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“AtNAC2, a transcription factor downstream of ethylene and auxin signaling pathways, is involved in salt stress response and lateral root development”
e0“suppressed in the ethylene-insensitive mutants etr1-1 and ein2-1, and in the auxin-insensitive mutant tir1-1when compared with that in wild-type plants.”
e1“An NAC-type transcription factor gene AtNAC2 was identified from Arabidopsis thaliana”
e2“The salt induction was enhanced in the ethylene overproducer mutant eto1-1”
Claim · model-written summary
ABA insensitive mutants did not significantly alter salt induction.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Material
- abi2-1, abi3-1 and abi4-1e0
- Treatment
- salte0
- Outcome
- salt induction of AtNAC2e0
- Direction
- not significantly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“AtNAC2, a transcription factor downstream of ethylene and auxin signaling pathways, is involved in salt stress response and lateral root development”
e0“salt induction of AtNAC2 was not significantly affected in the ABA-insensitive mutants abi2-1, abi3-1 and abi4-1.”
e1“An NAC-type transcription factor gene AtNAC2 was identified from Arabidopsis thaliana”
Claim · model-written summary
AtNAC2 overexpression promoted lateral root development.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- Overexpression of AtNAC2e0
- Gene
- AtNAC2e0
- Outcome
- lateral root developmente0
- Direction
- promotione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“AtNAC2, a transcription factor downstream of ethylene and auxin signaling pathways, is involved in salt stress response and lateral root development”
e0“Overexpression of AtNAC2 in transgenic Arabidopsis plants resulted in promotion of lateral root development.”
Claim · model-written summary
AtNAC2 promoted some downstream gene expressions.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Gene
- AtNAC2e0
- Outcome
- downstream gene expressionse0
- Direction
- promotede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“AtNAC2, a transcription factor downstream of ethylene and auxin signaling pathways, is involved in salt stress response and lateral root development”
e0“AtNAC2 also promoted or inhibited downstream gene expressions.”
e1“An NAC-type transcription factor gene AtNAC2 was identified from Arabidopsis thaliana”
Claim · model-written summary
AtNAC2 inhibited some downstream gene expressions.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Gene
- AtNAC2e0
- Outcome
- downstream gene expressionse0
- Direction
- inhibitede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“AtNAC2, a transcription factor downstream of ethylene and auxin signaling pathways, is involved in salt stress response and lateral root development”
e0“AtNAC2 also promoted or inhibited downstream gene expressions.”
e1“An NAC-type transcription factor gene AtNAC2 was identified from Arabidopsis thaliana”
The same questions in other papers
salinity · molecular: expression · ArabidopsisPositive and negative results
19 papers in the same direction as this paper · 18 in the opposite direction
- positive
- negative
- no effect
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