Abstract
Soybean plants were grown in a greenhouse. In the phase of 4-6 leaves soybeans were artificially infected with strains of pathogens: Xanthomonas axonopodis pv. glycines 9284 and Xanthomonas axonopodis pv. phaseoli 8843. These strains were obtained from the Ukrainian collection of microorganisms of the Zabolotny institute of Microbiology and Virology of National Academy of Sciences of Ukraine. The photochemical activity of soybean leaves was determined by the biophysical method of chlorophyll fluorescence induction in 13 days after plant inoculation with bacterial strains. A portable Florotest fluorometer was use for measurements. A degree of chlorophyll degradation and suppression of photosynthetic activity in soybean leaves at artificial infection with bacterial strains isolated from different plant species of the Fabaceaeae family dependent from its virulence have been shown. The strain X. axonopodis pv. glycines 9284, isolated from soybean plants, have been highly virulent and acted more negatively than the low virulent to soybean strain X. axonopodis pv. phaseoli 8843. In particular, the value of the minimum fluorescence F0 decreased by 37.0 and 15.4 % for inoculation by strains with different virulence degree: X. axonopodis pv. glycines 9284 (from soybeans) and X. axonopodis pv. phaseoli 8843 (from beans) respectively. There was also a significant decrease in the value of Fm in these variants – by 54.9 % (X. axonopodis pv. glycines 9284) and 19.3 % (X. axonopodis pv. phaseoli 8843). At the same time, the value of maximum quantum yield of PSII (Fv / Fm) was decreased by 11.8 % in the variant with inoculation of soybean plants with the highly virulent strain X. axonopodis pv. glycines 9284, that indicates photoinhibition or damage of antenna complexes of the PSII photosynthetic apparatus of soybean plants. At the same time, only the tendency to reduce the maximum quantum yield of PSII was determined under action infection plants with X. axonopodis pv. phaseoli 8843. A parameter chlorophyll fluorescence decrease ratio Rfd, which shows the activity of CO2 assimilation in the Calvin cycle, was inhibition more at the action of artificial infection with a highly virulent strain – X. axonopodis pv. glycines 9284 – 54.5 and less – at infection with a low virulence strain – X. axonopodis pv. phaseoli 8843 – by 10.8 %. With prolonged action of the pathogenic bacterial strains X.axonopodis pv. glycines 9284 and the X. axonopodis pv. phaseoli 8843 (fortnight) showed significant inhibition of the catalase and peroxidase activity of leaf tissues, which is evidence of an increase in the formation of ROS. It was demonstrated that the highly virulent strain X.axonopodis pv. glycines 9284 most of all suppressed the catalase activity of soybean leaf tissues.
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Claims 13
Claim · model-written summary
X. axonopodis pv. glycines 9284 was more virulent on soybean than X. axonopodis pv. phaseoli 8843.
- Taxon
- soybean
Glycine maxe0 - Interactor
- X. axonopodis pv. glycines 9284Xanthomonas citri pv. glycinese0pathogen
- Second interactor
- X. axonopodis pv. phaseoli 8843Xanthomonas phaseoli pv. phaseolie0pathogen
- Outcome
- acted more negativelye0
- Direction
- more negativelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The strain X. axonopodis pv. glycines 9284, isolated from soybean plants, have been highly virulent and acted more negatively than the low virulent to soybean strain X. axonopodis pv. phaseoli 8843.”
Claim · model-written summary
Inoculation with X. axonopodis pv. glycines 9284 reduced soybean leaf minimum fluorescence F0 by 37.0%.
- Taxon
- soybeanGlycine maxe0
- Treatment
- inoculation by strains with different virulence degreee0
- Interactor
- X. axonopodis pv. glycines 9284Xanthomonas citri pv. glycinese0pathogen
- Outcome
- minimum fluorescence F0e0
- Direction
- decreasede0
- Value
- 37.0e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the value of the minimum fluorescence F0 decreased by 37.0 and 15.4 % for inoculation by strains with different virulence degree: X. axonopodis pv. glycines 9284 (from soybeans) and X. axonopodis pv. phaseoli 8843 (from beans) respectively.”
t0“ФОТОХІМІЧНА АКТИВНІСТЬ ЛИСТКІВ СОЇ ЗА ДІЇ ФІТОПАТОГЕННИХ БАКТЕРІЙ РІЗНОЇ ВІРУЛЕНТНОСТІ”
Claim · model-written summary
Inoculation with X. axonopodis pv. phaseoli 8843 reduced soybean leaf minimum fluorescence F0 by 15.4%.
- Taxon
- soybeanGlycine maxe0
- Treatment
- inoculation by strains with different virulence degreee0
- Interactor
- X. axonopodis pv. phaseoli 8843Xanthomonas phaseoli pv. phaseolie0pathogen
- Outcome
- minimum fluorescence F0e0
- Direction
- decreasede0
- Value
- 15.4 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the value of the minimum fluorescence F0 decreased by 37.0 and 15.4 % for inoculation by strains with different virulence degree: X. axonopodis pv. glycines 9284 (from soybeans) and X. axonopodis pv. phaseoli 8843 (from beans) respectively.”
t0“ФОТОХІМІЧНА АКТИВНІСТЬ ЛИСТКІВ СОЇ ЗА ДІЇ ФІТОПАТОГЕННИХ БАКТЕРІЙ РІЗНОЇ ВІРУЛЕНТНОСТІ”
Claim · model-written summary
X. axonopodis pv. glycines 9284 reduced soybean Fm by 54.9%.
- Taxon
- SoybeanGlycine maxe1
- Treatment
- X. axonopodis pv. glycines 9284e0
- Interactor
- X. axonopodis pv. glycines 9284Xanthomonas citri pv. glycinese0pathogen
- Outcome
- value of Fme0
- Direction
- decreasee0
- Value
- 54.9 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was also a significant decrease in the value of Fm in these variants – by 54.9 % (X. axonopodis pv. glycines 9284) and 19.3 % (X. axonopodis pv. phaseoli 8843).”
t0“ФОТОХІМІЧНА АКТИВНІСТЬ ЛИСТКІВ СОЇ ЗА ДІЇ ФІТОПАТОГЕННИХ БАКТЕРІЙ РІЗНОЇ ВІРУЛЕНТНОСТІ”
e1“Soybean plants were grown in a greenhouse.”
Claim · model-written summary
X. axonopodis pv. phaseoli 8843 reduced soybean Fm by 19.3%.
- Taxon
- SoybeanGlycine maxe1
- Treatment
- X. axonopodis pv. phaseoli 8843e0
- Interactor
- X. axonopodis pv. phaseoli 8843Xanthomonas phaseoli pv. phaseolie0pathogen
- Outcome
- value of Fme0
- Direction
- decreasee0
- Value
- 19.3 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was also a significant decrease in the value of Fm in these variants – by 54.9 % (X. axonopodis pv. glycines 9284) and 19.3 % (X. axonopodis pv. phaseoli 8843).”
t0“ФОТОХІМІЧНА АКТИВНІСТЬ ЛИСТКІВ СОЇ ЗА ДІЇ ФІТОПАТОГЕННИХ БАКТЕРІЙ РІЗНОЇ ВІРУЛЕНТНОСТІ”
e1“Soybean plants were grown in a greenhouse.”
Claim · model-written summary
X. axonopodis pv. glycines 9284 reduced soybean PSII maximum quantum yield by 11.8%.
- Taxon
- soybeanGlycine maxe0
- Treatment
- inoculation of soybean plants with the highly virulent strain X. axonopodis pv. glycines 9284e0
- Interactor
- X. axonopodis pv. glycines 9284Xanthomonas citri pv. glycinese0pathogen
- Outcome
- maximum quantum yield of PSII (Fv / Fm)e0
- Direction
- decreasede0
- Value
- 11.8 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the value of maximum quantum yield of PSII (Fv / Fm) was decreased by 11.8 % in the variant with inoculation of soybean plants with the highly virulent strain X. axonopodis pv. glycines 9284”
Claim · model-written summary
X. axonopodis pv. phaseoli 8843 showed only a tendency to reduce soybean PSII quantum yield.
- Taxon
- SoybeanGlycine maxe1
- Interactor
- X. axonopodis pv. phaseoli 8843Xanthomonas phaseoli pv. phaseolie0pathogen
- Outcome
- maximum quantum yield of PSIIe0
- Direction
- reducee0
- Qualifier
- only the tendencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only the tendency to reduce the maximum quantum yield of PSII was determined under action infection plants with X. axonopodis pv. phaseoli 8843.”
t0“ФОТОХІМІЧНА АКТИВНІСТЬ ЛИСТКІВ СОЇ ЗА ДІЇ ФІТОПАТОГЕННИХ БАКТЕРІЙ РІЗНОЇ ВІРУЛЕНТНОСТІ”
e1“Soybean plants were grown in a greenhouse.”
Claim · model-written summary
X. axonopodis pv. glycines 9284 inhibited soybean Rfd by 54.5.
- Taxon
- SoybeanGlycine maxe1
- Treatment
- artificial infection with a highly virulent straine0
- Interactor
- X. axonopodis pv. glycines 9284Xanthomonas citri pv. glycinese0pathogen
- Outcome
- chlorophyll fluorescence decrease ratio Rfde0
- Direction
- inhibition moree0
- Value
- 54.5e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A parameter chlorophyll fluorescence decrease ratio Rfd, which shows the activity of CO2 assimilation in the Calvin cycle, was inhibition more at the action of artificial infection with a highly virulent strain – X. axonopodis pv. glycines 9284 – 54.5 and less – at infection with a low virulence strain – X. axonopodis pv. phaseoli 8843 – by 10.8 %.”
t0“ФОТОХІМІЧНА АКТИВНІСТЬ ЛИСТКІВ СОЇ ЗА ДІЇ ФІТОПАТОГЕННИХ БАКТЕРІЙ РІЗНОЇ ВІРУЛЕНТНОСТІ”
e1“Soybean plants were grown in a greenhouse.”
Claim · model-written summary
X. axonopodis pv. phaseoli 8843 inhibited soybean Rfd by 10.8%.
- Taxon
- SoybeanGlycine maxe1
- Treatment
- infection with a low virulence straine0
- Interactor
- X. axonopodis pv. phaseoli 8843Xanthomonas phaseoli pv. phaseolie0pathogen
- Outcome
- chlorophyll fluorescence decrease ratio Rfde0
- Direction
- lesse0
- Value
- 10.8 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A parameter chlorophyll fluorescence decrease ratio Rfd, which shows the activity of CO2 assimilation in the Calvin cycle, was inhibition more at the action of artificial infection with a highly virulent strain – X. axonopodis pv. glycines 9284 – 54.5 and less – at infection with a low virulence strain – X. axonopodis pv. phaseoli 8843 – by 10.8 %.”
t0“ФОТОХІМІЧНА АКТИВНІСТЬ ЛИСТКІВ СОЇ ЗА ДІЇ ФІТОПАТОГЕННИХ БАКТЕРІЙ РІЗНОЇ ВІРУЛЕНТНОСТІ”
e1“Soybean plants were grown in a greenhouse.”
Claim · model-written summary
Prolonged X. axonopodis pv. glycines 9284 infection significantly inhibited soybean catalase and peroxidase activity.
- Taxon
- SoybeanGlycine maxe1
- Treatment
- X.axonopodis pv. glycines 9284e0
- Interactor
- X.axonopodis pv. glycines 9284Xanthomonas citri pv. glycinese0pathogen
- Outcome
- catalase and peroxidase activity of leaf tissuese0
- Direction
- inhibitione0
- Qualifier
- fortnighte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With prolonged action of the pathogenic bacterial strains X.axonopodis pv. glycines 9284 and the X. axonopodis pv. phaseoli 8843 (fortnight) showed significant inhibition of the catalase and peroxidase activity of leaf tissues”
t0“ФОТОХІМІЧНА АКТИВНІСТЬ ЛИСТКІВ СОЇ ЗА ДІЇ ФІТОПАТОГЕННИХ БАКТЕРІЙ РІЗНОЇ ВІРУЛЕНТНОСТІ”
e1“Soybean plants were grown in a greenhouse.”
Claim · model-written summary
Prolonged X. axonopodis pv. phaseoli 8843 infection significantly inhibited soybean catalase and peroxidase activity.
- Taxon
- SoybeanGlycine maxe1
- Treatment
- X. axonopodis pv. phaseoli 8843e0
- Interactor
- X. axonopodis pv. phaseoli 8843Xanthomonas phaseoli pv. phaseolie0pathogen
- Outcome
- catalase and peroxidase activity of leaf tissuese0
- Direction
- inhibitione0
- Qualifier
- fortnighte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With prolonged action of the pathogenic bacterial strains X.axonopodis pv. glycines 9284 and the X. axonopodis pv. phaseoli 8843 (fortnight) showed significant inhibition of the catalase and peroxidase activity of leaf tissues”
t0“ФОТОХІМІЧНА АКТИВНІСТЬ ЛИСТКІВ СОЇ ЗА ДІЇ ФІТОПАТОГЕННИХ БАКТЕРІЙ РІЗНОЇ ВІРУЛЕНТНОСТІ”
e1“Soybean plants were grown in a greenhouse.”
Claim · model-written summary
The authors interpret enzyme inhibition as evidence of increased ROS formation.
- Taxon
- SoybeanGlycine maxe1
- Outcome
- increase in the formation of ROSe0
- Qualifier
- evidencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which is evidence of an increase in the formation of ROS.”
t0“ФОТОХІМІЧНА АКТИВНІСТЬ ЛИСТКІВ СОЇ ЗА ДІЇ ФІТОПАТОГЕННИХ БАКТЕРІЙ РІЗНОЇ ВІРУЛЕНТНОСТІ”
e1“Soybean plants were grown in a greenhouse.”
Claim · model-written summary
The highly virulent X. axonopodis pv. glycines 9284 suppressed soybean leaf catalase activity most.
- Taxon
- soybeanGlycine maxe0
- Interactor
- X.axonopodis pv. glycines 9284Xanthomonas citri pv. glycinese0pathogen
- Outcome
- catalase activity of soybean leaf tissuese0
- Direction
- suppressede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highly virulent strain X.axonopodis pv. glycines 9284 most of all suppressed the catalase activity of soybean leaf tissues.”
The same questions in other papers
inoculation · physiology: photosynthesis · Glycine max (soybean)Positive and negative results
2 papers in the same direction as this paper · 31 in the opposite direction
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- positive
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See all 34 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.