Abstract
The impact of ultraviolet-B (UV-B) radiation on the culturable and unculturable bacterial communities were studied in field experiments using soybean plants grown under increased UV-B (UV-B+), negative control (UV-B-) and solar UV-B. Sampling of leaves exposed to UV-B was performed in different developmental stages of the plant. The data obtained demonstrate that UV-B radiation did not alter the culturable and unculturable bacterial community. In contrast, culture independent analysis revealed major differences between cultivars for the stage of development (cultivation time) of the plants. Regarding the bacterial communities of the phyllosphere, it is possible to observe a similar behavior of the analyzed groups (Bacteria, β-Proteobacteria, and Pseudomonas) on both cultivars (BRS-262 and IAC-100) according to the analyzed environmental factors (increased UV-B, negative control and solar UV-B). These results indicate that leaf surfaces are composed of epiphytic bacterial communities that have survival mechanisms of different environmental conditions, such as repair of DNA damage, pigmentation and production of exopolysaccharides (EPS). Key words: Ultraviolet-B (UV-B), phyllosphere, pigmented bacteria, survival.
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Claims 4
Claim · model-written summary
UV-B radiation did not alter culturable or unculturable bacterial communities on soybean.
- Taxon
- soybean
Glycine maxt0 - Treatment
- increased UV-B (UV-B+)e0
- Outcome
- culturable and unculturable bacterial communitye1
- Direction
- did not altere1
- Comparator
- negative control (UV-B-)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“increased UV-B (UV-B+), negative control (UV-B-) and solar UV-B”
e1“UV-B radiation did not alter the culturable and unculturable bacterial community”
Claim · model-written summary
Culture independent analysis found major cultivar differences associated with developmental stage.
- Taxon
- soybeanGlycine maxt0
- Outcome
- major differences between cultivars for the stage of developmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“culture independent analysis revealed major differences between cultivars for the stage of development (cultivation time) of the plants”
Claim · model-written summary
Bacteria, β-Proteobacteria and Pseudomonas behaved similarly on both soybean cultivars across analyzed UV-B conditions.
- Taxon
- soybeanGlycine maxt0
- Material
- BRS-262 and IAC-100e0
- Outcome
- similar behavior of the analyzed groupse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“similar behavior of the analyzed groups (Bacteria, β-Proteobacteria, and Pseudomonas) on both cultivars (BRS-262 and IAC-100) according to the analyzed environmental factors (increased UV-B, negative control and solar UV-B)”
Claim · model-written summary
Authors infer that epiphytic bacteria on soybean leaves possess mechanisms for surviving varying environmental conditions.
- Taxon
- soybeanGlycine maxt0
- Interactor
- epiphytic bacterial communitiese0other
- Outcome
- survival mechanisms of different environmental conditionse0
- Qualifier
- repair of DNA damage, pigmentation and production of exopolysaccharides (EPS)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“leaf surfaces are composed of epiphytic bacterial communities that have survival mechanisms of different environmental conditions, such as repair of DNA damage, pigmentation and production of exopolysaccharides (EPS)”
The same questions in other papers
uv · soil: biology · Glycine max (soybean)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.