Abstract
Seedlings were grown in plexiglas culture vessels containing Shive's four-salt solution with trace elements added. Single antibiotics in various concentrations were added to the culture solution. Streptomycin and chloramphenicol increased the resistance of Thatcher wheat to infection by Xanthomonas translucens (S.J. & R.) Hagb., but additions of actidione (cycloheximide), griseofulvin, and neomycin failed to do so. The dry weight per plant was reduced by all of the antibiotics even when the antibiotic had no apparent effect on the rate or amount of disease development. The reduction in weight was least with neomycin and greatest with the higher concentrations of three forms of streptomycin tested. Chloramphenicol reduced dry weight appreciably even though infection was controlled. The induction of resistance appears to be closely related to phytotoxicity and to the sensitivity of the pathogen to the same antibiotic.
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Claims 8
Claim · model-written summary
Streptomycin increased the resistance of Thatcher wheat to infection by Xanthomonas translucens.
- Taxon
- Thatcher wheate1
- Treatment
- Streptomycine1
- Interactor
- Xanthomonas translucens
Xanthomonas translucense1pathogen - Outcome
- resistancee1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Streptomycin and chloramphenicol increased the resistance of Thatcher wheat to infection by Xanthomonas translucens (S.J. & R.) Hagb”
Claim · model-written summary
Chloramphenicol increased the resistance of Thatcher wheat to infection by Xanthomonas translucens.
- Taxon
- Thatcher wheate1
- Treatment
- chloramphenicole1
- Interactor
- Xanthomonas translucensXanthomonas translucense1pathogen
- Outcome
- resistancee1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Streptomycin and chloramphenicol increased the resistance of Thatcher wheat to infection by Xanthomonas translucens (S.J. & R.) Hagb”
Claim · model-written summary
Actidione (cycloheximide), griseofulvin and neomycin did not increase the resistance of Thatcher wheat to infection by Xanthomonas translucens.
- Taxon
- Thatcher wheate1
- Treatment
- actidione (cycloheximide), griseofulvin, and neomycine2
- Interactor
- Xanthomonas translucensXanthomonas translucense2pathogen
- Outcome
- resistancee2
- Direction
- no_changeinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Streptomycin and chloramphenicol increased the resistance of Thatcher wheat to infection by Xanthomonas translucens (S.J. & R.) Hagb”
e2“Streptomycin and chloramphenicol increased the resistance of Thatcher wheat to infection by Xanthomonas translucens (S.J. & R.) Hagb., but additions of actidione (cycloheximide), griseofulvin, and neomycin failed to do so”
Claim · model-written summary
All of the antibiotics reduced the dry weight per wheat plant.
- Taxon
- Thatcher wheate1
- Treatment
- all of the antibioticse3
- Outcome
- dry weight per plante3
- Direction
- reducede3
Not reportedComparator
Verbatim
e1“Streptomycin and chloramphenicol increased the resistance of Thatcher wheat to infection by Xanthomonas translucens (S.J. & R.) Hagb”
e3“The dry weight per plant was reduced by all of the antibiotics”
Claim · model-written summary
Chloramphenicol reduced dry weight appreciably even though infection was controlled.
- Taxon
- Thatcher wheate1
- Treatment
- Chloramphenicole4
- Outcome
- dry weighte4
- Direction
- reducede4
- Qualifier
- even though infection was controllede4
Not reportedComparator
Verbatim
e1“Streptomycin and chloramphenicol increased the resistance of Thatcher wheat to infection by Xanthomonas translucens (S.J. & R.) Hagb”
e4“Chloramphenicol reduced dry weight appreciably even though infection was controlled”
Claim · model-written summary
The reduction in dry weight was smallest with neomycin.
Not reportedComparator
Verbatim
e1“Streptomycin and chloramphenicol increased the resistance of Thatcher wheat to infection by Xanthomonas translucens (S.J. & R.) Hagb”
e5“The reduction in weight was least with neomycin and greatest with the higher concentrations of three forms of streptomycin tested”
Claim · model-written summary
The reduction in dry weight was greatest with the higher concentrations of three forms of streptomycin tested.
- Taxon
- Thatcher wheate1
- Treatment
- higher concentrations of three forms of streptomycine5
- Outcome
- reduction in weighte5
- Direction
- greateste5
Not reportedComparator
Verbatim
e1“Streptomycin and chloramphenicol increased the resistance of Thatcher wheat to infection by Xanthomonas translucens (S.J. & R.) Hagb”
e5“The reduction in weight was least with neomycin and greatest with the higher concentrations of three forms of streptomycin tested”
Claim · model-written summary
The induction of resistance is authors-interpreted as closely related to phytotoxicity and to the sensitivity of the pathogen to the antibiotic.
Verbatim
e1“Streptomycin and chloramphenicol increased the resistance of Thatcher wheat to infection by Xanthomonas translucens (S.J. & R.) Hagb”
e6“The induction of resistance appears to be closely related to phytotoxicity and to the sensitivity of the pathogen to the same antibiotic”