Abstract
【Objective】 The study is to investigate whether parameters of electrical impedance spectroscopy(EIS) could be used to monitor the stress level in pear leaves.【Method】In this study,0.2 mmol·L-1 salicylic acid(SA) was applied and pear(Pyrus bretschneideri 'Yali') leaves were as test materials.After the treatment with SA,pear leaves were inoculated with Physalospora piricola Nose.The effects of SA and pathogen stress on parameters of EIS in pear leaves were investigated.The changes of physiological parameters related with membrane lipid peroxidation were also examined.The correlations between EIS parameters and physiological parameters were analyzed.【Result】The results showed that specific extracellular resistance in leaves treated with SA increased.It was also observed that specific extracellular resistance,specific intracellular resistance and distribution coefficient of relaxation time decreased,but relaxation time increased in leaves infected by P.piricola.In the inoculated leaves,the SA-treatment enhanced the activities of superoxide dismutase(SOD) and the contents of MDA and ■ dropped down simultaneously.These results demonstrated that SA could reduce the degree of membrane lipid peroxidation.Correlation analysis between EIS parameters and physiological parameters in pear leaves showed that intracellular resistance in leaves infected by P.piricola was positively correlated with contents of MDA.Furthermore,specific extracellular resistance and specific intracellular resistance were positively correlated with contents of ■ in leaves treated with SA,but relaxation time was negatively correlated with contents of ■.【Conclusion】EIS parameters which reflected the changes within cells could be used as index of monitoring the pathogen stress in pear leaves.
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Claims 10
Claim · model-written summary
SA increased specific extracellular resistance in pear leaves.
- Taxon
- pear
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communist0 - Treatment
- SAe0
- Outcome
- specific extracellular resistancee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e0“specific extracellular resistance in leaves treated with SA increased”
t0“Influences of salicylic acid and inoculation with Physalosproa piricola on electrical impedance spectroscopy parameters in pear leaves”
Claim · model-written summary
P. piricola infection decreased extracellular resistance, intracellular resistance, and relaxation time distribution coefficient.
- Taxon
- pearPyrus communist0
- Treatment
- infected by P.piricolae1
- Outcome
- specific extracellular resistance,specific intracellular resistance and distribution coefficient of relaxation timee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“specific extracellular resistance,specific intracellular resistance and distribution coefficient of relaxation time decreased”
t0“Influences of salicylic acid and inoculation with Physalosproa piricola on electrical impedance spectroscopy parameters in pear leaves”
e1“in leaves infected by P.piricola.In the inoculated leaves”
Claim · model-written summary
P. piricola infection increased relaxation time.
- Taxon
- pearPyrus communist0
- Treatment
- infected by P.piricolae0
- Interactor
- P.piricolae0pathogen
- Outcome
- relaxation timee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relaxation time increased in leaves infected by P.piricola”
t0“Influences of salicylic acid and inoculation with Physalosproa piricola on electrical impedance spectroscopy parameters in pear leaves”
Claim · model-written summary
SA increased SOD activity in inoculated pear leaves.
- Taxon
- pearPyrus communist0
- Treatment
- SA-treatmente0
- Interactor
- Physalosproa piricolat0pathogen
- Outcome
- activities of superoxide dismutase(SOD)e0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the inoculated leaves,the SA-treatment enhanced the activities of superoxide dismutase(SOD)”
t0“Influences of salicylic acid and inoculation with Physalosproa piricola on electrical impedance spectroscopy parameters in pear leaves”
Claim · model-written summary
SA increased MDA content in inoculated leaves.
- Taxon
- pearPyrus communist0
- Treatment
- SA-treatmente0
- Interactor
- Physalosproa piricolat0pathogen
- Outcome
- contents of MDAe0
- Direction
- dropped downe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the SA-treatment enhanced the activities of superoxide dismutase(SOD) and the contents of MDA and ■ dropped down simultaneously”
t0“Influences of salicylic acid and inoculation with Physalosproa piricola on electrical impedance spectroscopy parameters in pear leaves”
Claim · model-written summary
SA reduced membrane lipid peroxidation.
- Taxon
- pearPyrus communist0
- Treatment
- SAe0
- Outcome
- degree of membrane lipid peroxidatione0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SA could reduce the degree of membrane lipid peroxidation”
t0“Influences of salicylic acid and inoculation with Physalosproa piricola on electrical impedance spectroscopy parameters in pear leaves”
Claim · model-written summary
Intracellular resistance was positively correlated with MDA in infected leaves.
- Taxon
- pearPyrus communist0
- Interactor
- P.piricolae0pathogen
- Compound
- MDAe0
- Outcome
- intracellular resistancee0
- Direction
- positively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“intracellular resistance in leaves infected by P.piricola was positively correlated with contents of MDA”
t0“Influences of salicylic acid and inoculation with Physalosproa piricola on electrical impedance spectroscopy parameters in pear leaves”
Claim · model-written summary
Extracellular and intracellular resistance were positively correlated with an obscured content measure in SA treated leaves.
- Taxon
- pearPyrus communist0
- Treatment
- SAe0
- Outcome
- specific extracellular resistance and specific intracellular resistancee0
- Direction
- positively correlatede0
- Qualifier
- contents of ■e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“specific extracellular resistance and specific intracellular resistance were positively correlated with contents of ■ in leaves treated with SA”
t0“Influences of salicylic acid and inoculation with Physalosproa piricola on electrical impedance spectroscopy parameters in pear leaves”
Claim · model-written summary
Relaxation time was negatively correlated with the obscured content measure.
- Taxon
- pearPyrus communist0
- Treatment
- SAe1
- Outcome
- relaxation timee0
- Direction
- negatively correlatede0
- Qualifier
- contents of ■e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relaxation time was negatively correlated with contents of ■”
t0“Influences of salicylic acid and inoculation with Physalosproa piricola on electrical impedance spectroscopy parameters in pear leaves”
e1“contents of ■ in leaves treated with SA”
Claim · model-written summary
The authors concluded EIS parameters could monitor pathogen stress in pear leaves.
- Taxon
- pearPyrus communise0
- Outcome
- monitoring the pathogen stresse0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“EIS parameters which reflected the changes within cells could be used as index of monitoring the pathogen stress in pear leaves”
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1 paper more in this group
See all 5 papers →infection · disease · Pyrus communis (pear)Positive and negative results
1 in the opposite direction
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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.