Abstract
The CAX (Calcium Exchanger) genes constitute a set of signal transductors that are important for plant growth and adaptation to environmental stresses, especially to low temperature. CbCAX51, a Ca 2+ /H + exchanger was cloned form Capsella bursa-pastoris, has been reported as a cold inducible gene. Here we showed that the transcriptional level of CbCAX51 in leaf and stem was higher than that in roots. Transcript of CbCAX51 was continuously up-regulated by Ca 2+ and Cu 2+ , and transiently up-regulated by Zn 2+ and Li + , cold stress, GA and ABA. The CbCAX51 protein was predicted to be localized in vacuolar by PSORT to Plant-mPLos, which was further confirmed by the subcellular detection of CbCAX51-GFP fusion protein. When CbCAX51 was transformed into the cold-sensitive plant tobacco, it conferred cold tolerance in tobacco seedlings based on physiological studies. Likewise, overexpression of CbCAX51 can activated some cold responsive genes in transgenic tobacco. Taken together, CbCAX51 is involved in the cold signal transduction and modulation of downstream components to enhance cold tolerance in tobacco.
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Claims 12
Claim · model-written summary
CbCAX51 transcription was higher in leaf and stem than roots.
- Organ / stage
- leaf and steme0
- Gene
- CbCAX51e0
- Outcome
- transcriptional levele0
- Direction
- highere0
- Comparator
- rootse0
Not reportedTaxon
Verbatim
e0“the transcriptional level of CbCAX51 in leaf and stem was higher than that in roots.”
Claim · model-written summary
CbCAX51 transcript was continuously up-regulated by Ca 2+.
- Treatment
- Ca 2+e0
- Gene
- CbCAX51e0
- Outcome
- Transcript of CbCAX51e0
- Direction
- up-regulatede0
- Qualifier
- continuouslye0
Not reportedTaxonComparator
Verbatim
e0“Transcript of CbCAX51 was continuously up-regulated by Ca 2+ and Cu 2+ , and transiently up-regulated by Zn 2+ and Li + , cold stress, GA and ABA.”
Claim · model-written summary
CbCAX51 transcript was continuously up-regulated by Cu 2+.
- Treatment
- Cu 2+e0
- Gene
- CbCAX51e0
- Outcome
- Transcript of CbCAX51e0
- Direction
- up-regulatede0
- Qualifier
- continuouslye0
Not reportedTaxonComparator
Verbatim
e0“Transcript of CbCAX51 was continuously up-regulated by Ca 2+ and Cu 2+ , and transiently up-regulated by Zn 2+ and Li + , cold stress, GA and ABA.”
Claim · model-written summary
CbCAX51 transcript was transiently up-regulated by Zn 2+.
- Treatment
- Zn 2+e0
- Gene
- CbCAX51e0
- Outcome
- Transcript of CbCAX51e0
- Direction
- up-regulatede0
- Qualifier
- transientlye0
Not reportedTaxonComparator
Verbatim
e0“Transcript of CbCAX51 was continuously up-regulated by Ca 2+ and Cu 2+ , and transiently up-regulated by Zn 2+ and Li + , cold stress, GA and ABA.”
Claim · model-written summary
CbCAX51 transcript was transiently up-regulated by Li +.
- Treatment
- Li +e0
- Gene
- CbCAX51e0
- Outcome
- Transcript of CbCAX51e0
- Direction
- up-regulatede0
- Qualifier
- transientlye0
Not reportedTaxonComparator
Verbatim
e0“Transcript of CbCAX51 was continuously up-regulated by Ca 2+ and Cu 2+ , and transiently up-regulated by Zn 2+ and Li + , cold stress, GA and ABA.”
Claim · model-written summary
CbCAX51 transcript was transiently up-regulated by cold stress.
- Treatment
- cold stresse0
- Gene
- CbCAX51e0
- Outcome
- Transcript of CbCAX51e0
- Direction
- up-regulatede0
- Qualifier
- transientlye0
Not reportedTaxonComparator
Verbatim
e0“Transcript of CbCAX51 was continuously up-regulated by Ca 2+ and Cu 2+ , and transiently up-regulated by Zn 2+ and Li + , cold stress, GA and ABA.”
Claim · model-written summary
CbCAX51 transcript was transiently up-regulated by GA.
- Treatment
- GAe0
- Gene
- CbCAX51e0
- Outcome
- Transcript of CbCAX51e0
- Direction
- up-regulatede0
- Qualifier
- transientlye0
Not reportedTaxonComparator
Verbatim
e0“Transcript of CbCAX51 was continuously up-regulated by Ca 2+ and Cu 2+ , and transiently up-regulated by Zn 2+ and Li + , cold stress, GA and ABA.”
Claim · model-written summary
CbCAX51 transcript was transiently up-regulated by ABA.
- Treatment
- ABAe0
- Gene
- CbCAX51e0
- Outcome
- Transcript of CbCAX51e0
- Direction
- up-regulatede0
- Qualifier
- transientlye0
Not reportedTaxonComparator
Verbatim
e0“Transcript of CbCAX51 was continuously up-regulated by Ca 2+ and Cu 2+ , and transiently up-regulated by Zn 2+ and Li + , cold stress, GA and ABA.”
Claim · model-written summary
Prediction and GFP detection placed CbCAX51 protein in the vacuole.
Not reportedTaxon
Verbatim
e0“The CbCAX51 protein was predicted to be localized in vacuolar by PSORT to Plant-mPLos, which was further confirmed by the subcellular detection of CbCAX51-GFP fusion protein.”
Claim · model-written summary
Transformation with CbCAX51 conferred cold tolerance on tobacco seedlings.
- Taxon
- tobacco
Nicotiana tabacume0 - Treatment
- CbCAX51 was transformede0
- Gene
- CbCAX51e0
- Outcome
- cold tolerance in tobacco seedlingse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When CbCAX51 was transformed into the cold-sensitive plant tobacco, it conferred cold tolerance in tobacco seedlings based on physiological studies.”
Claim · model-written summary
CbCAX51 overexpression activated cold responsive genes in transgenic tobacco.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- overexpression of CbCAX51e0
- Gene
- CbCAX51e0
- Outcome
- cold responsive genese0
- Direction
- activatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“overexpression of CbCAX51 can activated some cold responsive genes in transgenic tobacco.”
Claim · model-written summary
The authors infer that CbCAX51 modulates downstream components to enhance tobacco cold tolerance.
- Taxon
- tobaccoNicotiana tabacume0
- Gene
- CbCAX51e0
- Outcome
- cold tolerancee0
- Qualifier
- modulation of downstream componentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CbCAX51 is involved in the cold signal transduction and modulation of downstream components to enhance cold tolerance in tobacco.”
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