Abstract
Ethylene-responsive genes from peach (Prunus persica, L. Batsch) were isolated by differential screening of a cDNA library constructed from abscission zones in which cell separation had been evoked by treatment with the ethylene analogue propylene. DNA and deduced protein sequences of four selected clones, termed Prunus persica Abscission zone (PpAz), revealed homology to thaumatin-like proteins (PpAz8 and PpAz44), to proteins belonging to the PR4 class of pathogenesis-related (PR) proteins (PpAz89), and to fungal and plant beta-D-xylosidases (PpAz152). Expression analyses conducted on embrioctomized and CEPA-treated fruitlets as well as on fruit explants have shown that PpAz8, PpAz44 and PpAz89 are preferentially transcribed in the cells of the fruit abscission zone rather than in the non-zone tissues. The PpAz152 transcript showed a different accumulation pattern being consistently and promptly induced by wounding and only slightly stimulated by propylene. By contrast, a complex pattern of transcript accumulation was found for the four genes in response to the wounding of leaves and during organ development and senescence. Based on this evidence, the existence of multiple regulatory pathways underlying the differential expression of the four PpAz genes in the different tissues and physiological processes is hypothesized.
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Claims 6
Claim · model-written summary
Four selected peach clones had homology to thaumatin-like proteins, PR4 proteins, or beta-D-xylosidases.
- Taxon
- peach
Prunus persicat0 - Gene
- Prunus persica Abscission zone (PpAz)e0
- Outcome
- revealed homology to thaumatin-like proteins (PpAz8 and PpAz44), to proteins belonging to the PR4 class of pathogenesis-related (PR) proteins (PpAz89), and to fungal and plant beta-D-xylosidases (PpAz152)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DNA and deduced protein sequences of four selected clones, termed Prunus persica Abscission zone (PpAz), revealed homology to thaumatin-like proteins (PpAz8 and PpAz44), to proteins belonging to the PR4 class of pathogenesis-related (PR) proteins (PpAz89), and to fungal and plant beta-D-xylosidases (PpAz152)”
t0“peach (Prunus persica)”
Claim · model-written summary
PpAz8, PpAz44 and PpAz89 were preferentially transcribed in peach fruit abscission-zone cells.
- Taxon
- peachPrunus persicat0
- Organ / stage
- fruit abscission zonee0
- Gene
- PpAz8, PpAz44 and PpAz89e0
- Outcome
- preferentially transcribede0
- Comparator
- non-zone tissuese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PpAz8, PpAz44 and PpAz89 are preferentially transcribed in the cells of the fruit abscission zone rather than in the non-zone tissues”
t0“peach (Prunus persica)”
Claim · model-written summary
Wounding promptly induced the peach PpAz152 transcript.
- Taxon
- peachPrunus persicat0
- Treatment
- woundinge0
- Gene
- PpAz152e0
- Outcome
- PpAz152 transcripte0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The PpAz152 transcript showed a different accumulation pattern being consistently and promptly induced by wounding and only slightly stimulated by propylene”
t0“peach (Prunus persica)”
Claim · model-written summary
Propylene only slightly stimulated peach PpAz152 transcript accumulation.
- Taxon
- peachPrunus persicat0
- Treatment
- propylenee0
- Gene
- PpAz152e0
- Outcome
- PpAz152 transcripte0
- Direction
- stimulatede0
- Qualifier
- only slightlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The PpAz152 transcript showed a different accumulation pattern being consistently and promptly induced by wounding and only slightly stimulated by propylene”
t0“peach (Prunus persica)”
Claim · model-written summary
The four peach genes showed complex transcript accumulation patterns following leaf wounding and during organ development and senescence.
- Taxon
- peachPrunus persicat0
- Organ / stage
- leavese0
- Outcome
- a complex pattern of transcript accumulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a complex pattern of transcript accumulation was found for the four genes in response to the wounding of leaves and during organ development and senescence”
t0“peach (Prunus persica)”
Claim · model-written summary
The authors hypothesize that multiple regulatory pathways underlie differential expression of the four peach genes.
- Taxon
- peachPrunus persicat0
- Gene
- PpAz genese0
- Outcome
- differential expression of the four PpAz genese0
- Qualifier
- multiple regulatory pathwayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the existence of multiple regulatory pathways underlying the differential expression of the four PpAz genes in the different tissues and physiological processes is hypothesized”
t0“peach (Prunus persica)”
The same questions in other papers
propene · molecular: expression · Prunus persica (peach)Positive and negative results
1 in the opposite direction
- no effect
mechanical · molecular: expression · Prunus persica (peach)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
1 paper more in this group
See all 5 papers →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.