Abstract
ABSTRACT In excised dormant stems of peach (Prunus persica), prune (Prunus domestica), and almond (Prunus dulcis), stem diameter, stem hydration, and freezing-thawing influenced the extent of infection caused by Pseudomonas syringae pv. syringae. Bacterial lesion length increased with increasing stem diameter, demonstrating the need to account for the effects of stem diameter when lesion length data are analyzed. Lesion length increased or decreased with stem hydration or dehydration, respectively. However, tissue water content was not a good indicator of tissue susceptibility to infection by P. syringae pv. syringae, as larger diameter stems had larger lesions and lower water content than did smaller diameter stems. After freezing at -5 degrees C for 12 to 24 h, inoculations made during the thawing process produced significantly larger lesions than did inoculations performed before freezing or after thawing. These results support the hypothesis that the increased susceptibility to bacterial canker that is associated with noninjurious freezing is a result of the increased passive spread of bacteria through water redistribution when inoculation is performed during the thawing process. Plant tissue water relationship characteristics that can influence water movement during freezing and thawing may be an important component of bacterial canker development in stone fruit trees.
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Claims 6
Claim · model-written summary
Bacterial lesion length increased as stem diameter increased in excised dormant stone fruit stems.
- Taxon
- peach
Prunus persicae0 - Organ / stage
- stemse0
- Interactor
- Pseudomonas syringae pv. syringae
Pseudomonas syringae pv. syringaee2pathogen - Outcome
- Bacterial lesion lengthe1
- Direction
- increasede1
- Comparator
- stem diametere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In excised dormant stems of peach (Prunus persica), prune (Prunus domestica), and almond (Prunus dulcis)”
e1“Bacterial lesion length increased with increasing stem diameter”
e2“infection caused by Pseudomonas syringae pv. syringae”
Claim · model-written summary
Lesion length increased with stem hydration.
- Taxon
- peachPrunus persicae1
- Organ / stage
- stemse1
- Treatment
- stem hydratione0
- Interactor
- Pseudomonas syringae pv. syringaePseudomonas syringae pv. syringaee2pathogen
- Outcome
- Lesion lengthe0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lesion length increased or decreased with stem hydration or dehydration, respectively”
e1“stems of peach (Prunus persica), prune (Prunus domestica), and almond (Prunus dulcis)”
e2“Pseudomonas syringae pv. syringae”
Claim · model-written summary
Lesion length decreased with stem dehydration.
- Taxon
- peachPrunus persicae1
- Treatment
- dehydratione0
- Interactor
- Pseudomonas syringae pv. syringaePseudomonas syringae pv. syringaee2pathogen
- Outcome
- Lesion lengthe0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lesion length increased or decreased with stem hydration or dehydration, respectively”
e1“stems of peach (Prunus persica), prune (Prunus domestica), and almond (Prunus dulcis)”
e2“Pseudomonas syringae pv. syringae”
Claim · model-written summary
Tissue water content was a poor indicator of susceptibility because larger stems had larger lesions despite lower water content.
- Taxon
- peachPrunus persicae1
- Interactor
- P. syringae pv. syringaePseudomonas syringae pv. syringaee0pathogen
- Outcome
- tissue susceptibility to infectione0
- Comparator
- smaller diameter stemse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tissue water content was not a good indicator of tissue susceptibility to infection by P. syringae pv. syringae, as larger diameter stems had larger lesions and lower water content than did smaller diameter stems”
e1“stems of peach (Prunus persica), prune (Prunus domestica), and almond (Prunus dulcis)”
Claim · model-written summary
Inoculation during thawing after freezing at -5 degrees C for 12 to 24 h produced significantly larger lesions than inoculation before freezing or after thawing.
- Taxon
- peachPrunus persicae1
- Treatment
- inoculations made during the thawing processe0
- Interactor
- Pseudomonas syringae pv. syringaePseudomonas syringae pv. syringaee2pathogen
- Outcome
- lesionse0
- Direction
- largere0
- Qualifier
- -5 degrees C for 12 to 24 he0
- Comparator
- inoculations performed before freezing or after thawinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After freezing at -5 degrees C for 12 to 24 h, inoculations made during the thawing process produced significantly larger lesions than did inoculations performed before freezing or after thawing”
e1“stems of peach (Prunus persica), prune (Prunus domestica), and almond (Prunus dulcis)”
e2“Pseudomonas syringae pv. syringae”
Claim · model-written summary
The authors propose that water redistribution during thawing increases passive bacterial spread and susceptibility to bacterial canker.
- Taxon
- peachPrunus persicae1
- Interactor
- Pseudomonas syringae pv. syringaePseudomonas syringae pv. syringaee2pathogen
- Outcome
- increased susceptibility to bacterial cankere0
- Qualifier
- increased passive spread of bacteria through water redistributione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased susceptibility to bacterial canker that is associated with noninjurious freezing is a result of the increased passive spread of bacteria through water redistribution when inoculation is performed during the thawing process”
e1“stems of peach (Prunus persica), prune (Prunus domestica), and almond (Prunus dulcis)”
e2“Pseudomonas syringae pv. syringae”
The same questions in other papers
inoculation · Pseudomonas syringae pv. syringae · Prunus persica (peach)Results agree
1 paper in the same direction as this paper
- negative
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.