Abstract
BACKGROUND: Zinc-finger transcription factors play central roles in plant growth, development and abiotic stress responses. PLATZ encodes a class of plant-specific zinc-finger transcription factor. However, biological functions or physiological mechanism controlled by PLATZ are currently limited. RESULTS: GhPLATZ1 transcripts were considerably up-regulated by NaCl, mannitol, abscisic acid (ABA) and gibberellin (GA) treatments. Transgenic Arabidopsis by ectopic expression of GhPLATZ1 exhibited faster seed germination and higher seedling establishment under salt and mannitol stresses than those of wild type (WT), indicating enhanced osmotic insensitivity in GhPLATZ1 transgenic Arabidopsis. The ABA content in dry seeds of GhPLATZ1 transgenic Arabidopsis was lower than that of WT whereas the ABA content was not changed in germinating seeds under salt stress. Seed germination was faster than but the seedling establishment of transgenic Arabidopsis was similar to WT. Besides, GhPLATZ1 transgenic and WT Arabidopsis exhibited insensitivity to paclobutrazol (PAC), a GA biosynthesis inhibitor, whereas exogenous GA could eliminate the growth difference between GhPLATZ1 transgenic and WT Arabidopsis under salt stress. Moreover, exogenous 1-aminocyclopropane-1-carboxylic acid (ACC), an ethylene precursor, exerted similar effects to GA. Furthermore, ABI4 and ETO1 transcripts were significantly down-regulated, whereas ACS8 was up-regulated in GhPLATZ1 transgenic Arabidopsis under salt stress. CONCLUSIONS: In conclusion, GhPLATZ1 had broad influence in responses to salt and mannitol stresses in transgenic Arabidopsis during seed germination and seedling establishment. The effect of GhPLATZ1 expression in transgenic Arabidopsis might be mediated by the ABA, GA, and ethylene pathways. Thus, this study provided new insights into the regulatory network in response to abiotic stresses in plants.
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Claims 11
Claim · model-written summary
GhPLATZ1 transcripts increased after NaCl, mannitol, ABA and GA treatments.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- NaCl, mannitol, abscisic acid (ABA) and gibberellin (GA) treatmentse0
- Gene
- GhPLATZ1e0
- Outcome
- GhPLATZ1 transcriptse0
- Direction
- up-regulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GhPLATZ1 transcripts were considerably up-regulated by NaCl, mannitol, abscisic acid (ABA) and gibberellin (GA) treatments”
t0“cotton PLATZ1”
Claim · model-written summary
GhPLATZ1 transgenic Arabidopsis germinated faster under salt and mannitol stress than wild type.
- Taxon
- Arabidopsis
Arabidopsise0 - Treatment
- ectopic expression of GhPLATZ1e0
- Outcome
- seed germinatione0
- Direction
- fastere0
- Qualifier
- salt and mannitol stressese0
- Comparator
- wild type (WT)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transgenic Arabidopsis by ectopic expression of GhPLATZ1 exhibited faster seed germination and higher seedling establishment under salt and mannitol stresses than those of wild type (WT)”
Claim · model-written summary
GhPLATZ1 transgenic Arabidopsis had higher seedling establishment under salt and mannitol stress than wild type.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- ectopic expression of GhPLATZ1e0
- Outcome
- seedling establishmente0
- Direction
- highere0
- Qualifier
- salt and mannitol stressese0
- Comparator
- wild type (WT)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transgenic Arabidopsis by ectopic expression of GhPLATZ1 exhibited faster seed germination and higher seedling establishment under salt and mannitol stresses than those of wild type (WT)”
Claim · model-written summary
Dry seeds of GhPLATZ1 transgenic Arabidopsis had lower ABA content than wild type.
- Taxon
- ArabidopsisArabidopsise0
- Organ / stage
- dry seedse0
- Treatment
- GhPLATZ1 transgenice0
- Outcome
- ABA contente0
- Direction
- lowere0
- Comparator
- WTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ABA content in dry seeds of GhPLATZ1 transgenic Arabidopsis was lower than that of WT”
Claim · model-written summary
ABA content in germinating seeds under salt stress was unchanged.
- Taxon
- ArabidopsisArabidopsist0
- Organ / stage
- germinating seedse0
- Treatment
- salt stresse0
- Outcome
- ABA contente0
- Direction
- not changede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ABA content was not changed in germinating seeds under salt stress”
t0“transgenic Arabidopsis”
Claim · model-written summary
GhPLATZ1 transgenic Arabidopsis germinated faster than wild type.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- transgenic Arabidopsise0
- Outcome
- Seed germinatione0
- Direction
- fastere0
- Comparator
- WTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed germination was faster than but the seedling establishment of transgenic Arabidopsis was similar to WT”
Claim · model-written summary
GhPLATZ1 transgenic Arabidopsis had similar seedling establishment to wild type.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- transgenic Arabidopsise0
- Outcome
- seedling establishmente0
- Direction
- similare0
- Comparator
- WTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the seedling establishment of transgenic Arabidopsis was similar to WT”
Claim · model-written summary
Exogenous GA eliminated the growth difference between GhPLATZ1 transgenic and wild type Arabidopsis under salt stress.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- exogenous GAe0
- Outcome
- growth differencee0
- Direction
- eliminatee0
- Qualifier
- under salt stresse0
- Comparator
- WT Arabidopsise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous GA could eliminate the growth difference between GhPLATZ1 transgenic and WT Arabidopsis under salt stress”
Claim · model-written summary
Exogenous ACC had effects similar to GA.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- exogenous 1-aminocyclopropane-1-carboxylic acid (ACC)e0
- Outcome
- similar effects to GAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous 1-aminocyclopropane-1-carboxylic acid (ACC), an ethylene precursor, exerted similar effects to GA”
t0“transgenic Arabidopsis”
Claim · model-written summary
ABI4 and ETO1 transcripts were down-regulated in GhPLATZ1 transgenic Arabidopsis under salt stress.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- salt stresse0
- Gene
- ABI4 and ETO1e0
- Outcome
- ABI4 and ETO1 transcriptse0
- Direction
- down-regulatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABI4 and ETO1 transcripts were significantly down-regulated, whereas ACS8 was up-regulated in GhPLATZ1 transgenic Arabidopsis under salt stress”
Claim · model-written summary
ACS8 expression was up-regulated in GhPLATZ1 transgenic Arabidopsis under salt stress.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ACS8 was up-regulated in GhPLATZ1 transgenic Arabidopsis under salt stress”
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