Abstract
In vascular plants the cell-to-cell interactions coordinating morphogenetic and physiological processes are mediated, among others, by the action of hormones, among which also short mobile peptides were recognized to have roles as signals. Such peptide hormones (PHs) are involved in defense responses, shoot and root growth, meristem homeostasis, organ abscission, nutrient signaling, hormone crosstalk and other developmental processes and act as both short and long distant ligands. In this work, the function of CTG134, a peach gene encoding a ROOT GROWTH FACTOR/GOLVEN-like PH expressed in mesocarp at the onset of ripening, was investigated for its role in mediating an auxin-ethylene crosstalk. In peach fruit, where an auxin-ethylene crosstalk mechanism is necessary to support climacteric ethylene synthesis, CTG134 expression peaked before that of ACS1 and was induced by auxin and 1-methylcyclopropene (1-MCP) treatments, whereas it was minimally affected by ethylene. In addition, the promoter of CTG134 fused with the GUS reporter highlighted activity in plant parts in which the auxin-ethylene interplay is known to occur. Arabidopsis and tobacco plants overexpressing CTG134 showed abnormal root hair growth, similar to wild-type plants treated with a synthetic form of the sulfated peptide. Moreover, in tobacco, lateral root emergence and capsule size were also affected. In Arabidopsis overexpressing lines, molecular surveys demonstrated an impaired hormonal crosstalk, resulting in a re-modulated expression of a set of genes involved in both ethylene and auxin synthesis, transport and perception. These data support the role of pCTG134 as a mediator in an auxin-ethylene regulatory circuit and open the possibility to exploit this class of ligands for the rational design of new and environmental friendly agrochemicals able to cope with a rapidly changing environment.
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Claims 12
Claim · model-written summary
Peach CTG134 expression peaked before ACS1 expression.
- Taxon
- peach
Prunus persicae0 - Organ / stage
- fruite0
- Gene
- CTG134e0
- Outcome
- CTG134 expression peaked before that of ACS1e0
- Direction
- peaked beforee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In peach fruit, where an auxin-ethylene crosstalk mechanism is necessary to support climacteric ethylene synthesis, CTG134 expression peaked before that of ACS1”
Claim · model-written summary
Auxin induced peach CTG134 expression.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CTG134 expression peaked before that of ACS1 and was induced by auxin and 1-methylcyclopropene (1-MCP) treatments, whereas it was minimally affected by ethylene”
t0“Peach”
Claim · model-written summary
1-MCP induced peach CTG134 expression.
- Taxon
- PeachPrunus persicat0
- Treatment
- 1-methylcyclopropene (1-MCP)e0
- Gene
- CTG134e0
- Outcome
- CTG134 expressione0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CTG134 expression peaked before that of ACS1 and was induced by auxin and 1-methylcyclopropene (1-MCP) treatments, whereas it was minimally affected by ethylene”
t0“Peach”
Claim · model-written summary
Ethylene minimally affected peach CTG134 expression.
- Taxon
- PeachPrunus persicat0
- Treatment
- ethylenee0
- Gene
- CTG134e0
- Outcome
- CTG134 expressione0
- Direction
- minimally affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CTG134 expression peaked before that of ACS1 and was induced by auxin and 1-methylcyclopropene (1-MCP) treatments, whereas it was minimally affected by ethylene”
t0“Peach”
Claim · model-written summary
The CTG134 promoter was active in plant parts with auxin and ethylene interplay.
- Taxon
- PeachPrunus persicat0
- Gene
- CTG134e0
- Outcome
- activity in plant parts in which the auxin-ethylene interplay is known to occure0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the promoter of CTG134 fused with the GUS reporter highlighted activity in plant parts in which the auxin-ethylene interplay is known to occur”
t0“Peach”
Claim · model-written summary
Arabidopsis overexpressing CTG134 showed abnormal root hair growth.
- Taxon
- Arabidopsis
Arabidopsise0 - Treatment
- overexpressing CTG134e0
- Gene
- CTG134e0
- Outcome
- abnormal root hair growthe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Arabidopsis and tobacco plants overexpressing CTG134 showed abnormal root hair growth”
Claim · model-written summary
Tobacco overexpressing CTG134 showed abnormal root hair growth.
- Taxon
- tobacco
Nicotiana tabacume0 - Treatment
- overexpressing CTG134e0
- Gene
- CTG134e0
- Outcome
- abnormal root hair growthe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Arabidopsis and tobacco plants overexpressing CTG134 showed abnormal root hair growth”
Claim · model-written summary
Synthetic sulfated peptide treatment caused similar abnormal root hair growth.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- a synthetic form of the sulfated peptidee0
- Outcome
- similare0
- Comparator
- wild-type plantse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“similar to wild-type plants treated with a synthetic form of the sulfated peptide”
e1“Arabidopsis and tobacco plants overexpressing CTG134 showed abnormal root hair growth”
Claim · model-written summary
CTG134 overexpression affected lateral root emergence in tobacco.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- CTG134t0
- Gene
- CTG134t0
- Outcome
- lateral root emergencee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in tobacco, lateral root emergence and capsule size were also affected”
t0“CTG134”
Claim · model-written summary
CTG134 overexpression affected capsule size in tobacco.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- CTG134t0
- Gene
- CTG134t0
- Outcome
- capsule sizee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in tobacco, lateral root emergence and capsule size were also affected”
t0“CTG134”
Claim · model-written summary
CTG134 overexpression impaired hormonal crosstalk in Arabidopsis.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- CTG134t0
- Gene
- CTG134t0
- Outcome
- hormonal crosstalke0
- Direction
- impairede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Arabidopsis overexpressing lines, molecular surveys demonstrated an impaired hormonal crosstalk”
t0“CTG134”
Claim · model-written summary
CTG134 overexpression remodeled expression of ethylene and auxin pathway genes in Arabidopsis.
- Taxon
- PeachPrunus persicat0
- Treatment
- CTG134t0
- Gene
- CTG134t0
- Outcome
- expression of a set of genes involved in both ethylene and auxin synthesis, transport and perceptione0
- Direction
- re-modulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a re-modulated expression of a set of genes involved in both ethylene and auxin synthesis, transport and perception”
t0“Peach RGF/GLV Signaling Peptide pCTG134”
The same questions in other papers
1-methylcyclopropene · molecular: expression · Prunus persica (peach)Positive and negative results
4 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- negative
- no effect
5 papers more in this group
See all 9 papers →ethene · molecular: expression · Prunus persica (peach)Positive and negative results
3 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
7 papers more in this group
See all 11 papers →class · molecular: expression · Prunus persica (peach)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.