Abstract
In 2017, cankers were observed on mature Populus nigra L. trees in Iran. The disease was characterized by copious amounts of brown exudation from cankers on the trunk, crotch and pruning scars in spring, summer and early autumn. Upon removal of the bark, reddish/brown lesions were visible in the woody tissue of the host. These symptoms were similar to those described on the same host in Spain. Isolations were performed from infected tissue. Pale cream bacterial colonies were consistently isolated from the infected tissue. The isolates were phenotypically identical to members of Pectobacteriaceae specifically Brenneria spp. The nucleotide sequences of the 16S rRNA and house-keeping genes, gyrB, infB, rpoB, and gapA indicated that the isolates from the trees in Iran were similar to Brenneria salicis, but formed a distinct cluster on their own suggesting that this was a new species of Brenneria. Pathogenicity tests were performed by inoculation of stems, trunks and shoots of age height where, poplar. At the site of inoculation, all isolates produced necrotic lesions and exudates 30 days after inoculation. Re-isolations and confirmation of their identity were performed fulfilling Koch’s postulates.
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Claims 8
Claim · model-written summary
Cankers were observed on mature Populus nigra trees in Iran in 2017.
- Taxon
- Populus nigra L.
Populus nigrae0 - Organ / stage
- maturee0
- Outcome
- cankerse0
- Setting
- Irane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 2017, cankers were observed on mature Populus nigra L. trees in Iran.”
Claim · model-written summary
The cankers exuded brown material from trunks, crotches and pruning scars in spring through early autumn.
- Taxon
- Populus nigraPopulus nigrat0
- Organ / stage
- trunk, crotch and pruning scarse0
- Outcome
- brown exudation from cankerse0
- Qualifier
- spring, summer and early autumne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“copious amounts of brown exudation from cankers on the trunk, crotch and pruning scars in spring, summer and early autumn”
t0“Populus nigra”
Claim · model-written summary
Reddish-brown lesions were visible in woody tissue beneath the bark.
- Taxon
- Populus nigraPopulus nigrat0
- Organ / stage
- woody tissuee0
- Outcome
- reddish/brown lesionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Upon removal of the bark, reddish/brown lesions were visible in the woody tissue of the host.”
t0“Populus nigra”
Claim · model-written summary
Pale cream bacterial colonies were consistently isolated from infected tissue.
- Taxon
- Populus nigraPopulus nigrat0
- Outcome
- Pale cream bacterial coloniese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pale cream bacterial colonies were consistently isolated from the infected tissue.”
t0“Populus nigra”
Claim · model-written summary
The isolates were phenotypically identical to members of Pectobacteriaceae, specifically Brenneria spp.
- Taxon
- Populus nigraPopulus nigrat0
- Outcome
- phenotypically identical to members of Pectobacteriaceae specifically Brenneria spp.e0
BrenneriaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The isolates were phenotypically identical to members of Pectobacteriaceae specifically Brenneria spp.”
t0“Populus nigra”
Claim · model-written summary
The Iranian isolates were similar to Brenneria salicis by gene sequences but formed a distinct cluster, suggesting a new Brenneria species.
- Taxon
- Populus nigraPopulus nigrat0
- Interactor
- Brenneria salicisBrenneria salicise0pathogen
- Outcome
- formed a distinct cluster on their owne0
- Setting
- Irane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The nucleotide sequences of the 16S rRNA and house-keeping genes, gyrB, infB, rpoB, and gapA indicated that the isolates from the trees in Iran were similar to Brenneria salicis, but formed a distinct cluster on their own suggesting that this was a new species of Brenneria.”
t0“Populus nigra”
Claim · model-written summary
All isolates produced necrotic lesions and exudates 30 days after inoculation of poplar.
- Organ / stage
- stems, trunks and shootse1
- Treatment
- inoculatione0
- Outcome
- necrotic lesions and exudatese0
- Qualifier
- 30 days after inoculatione0
PopulusNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the site of inoculation, all isolates produced necrotic lesions and exudates 30 days after inoculation.”
e1“Pathogenicity tests were performed by inoculation of stems, trunks and shoots of age height where, poplar.”
Claim · model-written summary
Re-isolation and identity confirmation fulfilled Koch’s postulates.
- Taxon
- Populus nigraPopulus nigrat0
- Outcome
- fulfilling Koch’s postulatese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Re-isolations and confirmation of their identity were performed fulfilling Koch’s postulates.”
t0“Populus nigra”
The same questions in other papers
inoculation · disease · Populus (poplar)Positive and negative results
4 papers in the same direction as this paper · 4 in the opposite direction
- negative
- positive
- positive
5 papers more in this group
See all 9 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.