Abstract
Potato tubers with silver scurf lesions were collected from storage and market potatoes in Yunnan province in the 2001.Incidence of silver scurf disease reached 33 3% from January to April. Symptoms of this disease were mainly confined to the stem end of affected tubers and severely infected tubers shriveled and shrank due to loss of moisture. The causal agent of silver scurf was identified as Helminthosporium solani by mycological and cultural characteristics. Conidiophores are unbrenched and turn to brown with age. The size of conidiophores are 150～550μm×7 0～10～0μm(avg.350×8 5μm)and 1 to 6 conidiophores are clustere in a bulb. Conidia are brown, arranged in whorls arising singly or in groups from the distal ends. Shape of conidia are straight, slightly curved, and have 3 to 8 septate. Size of condia with tapered tip was 20～80μm ×7 5～10μm(avg. 50×8 5μm). Sporulation of conidia was not difference depending on dark or light incubation conditions. Pathogenicity of the fungus was confirmed by artifical inoculation on the tuber surface. This is the first report in China of potato sliver scurf caused by Helminthosporium solani.
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Claims 12
Claim · model-written summary
Silver scurf incidence reached 33 3% from January to April.
- Taxon
- Potato
Solanum tuberosumt0 - Outcome
- Incidence of silver scurf diseasee0
- Direction
- reachede0
- Value
- 33 3%e0
- Qualifier
- from January to Aprile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato tubers”
e0“Incidence of silver scurf disease reached 33 3% from January to April.”
Claim · model-written summary
Silver scurf symptoms were mainly at the stem end of tubers.
- Taxon
- PotatoSolanum tuberosumt0
- Organ / stage
- stem end of affected tuberse0
- Outcome
- Symptoms of this diseasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato tubers”
e0“Symptoms of this disease were mainly confined to the stem end of affected tubers”
Claim · model-written summary
Severely infected tubers shriveled and shrank from moisture loss.
- Taxon
- PotatoSolanum tuberosumt0
- Outcome
- tubers shriveled and shranke0
- Qualifier
- due to loss of moisturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato tubers”
e0“severely infected tubers shriveled and shrank due to loss of moisture”
Claim · model-written summary
Helminthosporium solani was identified as the cause of silver scurf.
- Taxon
- PotatoSolanum tuberosumt0
- Interactor
- Helminthosporium solani
.jpg?width=60)
Helminthosporium solanie0pathogen - Outcome
- causal agent of silver scurfe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Potato tubers”
e0“The causal agent of silver scurf was identified as Helminthosporium solani by mycological and cultural characteristics.”
Claim · model-written summary
Conidiophores were unbranched and browned with age.
- Taxon
- Helminthosporium solaniHelminthosporium solanit0
- Outcome
- Conidiophores are unbrenched and turn to brown with agee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conidiophores are unbrenched and turn to brown with age.”
t0“HELMINTHOSPORIUM SOLANI”
Claim · model-written summary
Conidiophores measured 150～550μm×7 0～10～0μm and clustered one to six per bulb.
- Taxon
- Helminthosporium solaniHelminthosporium solanit0
- Outcome
- size of conidiophorese0
- Value
- 150～550μm×7 0～10～0μme0
- Qualifier
- 1 to 6 conidiophores are clustere in a bulbe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The size of conidiophores are 150～550μm×7 0～10～0μm(avg.350×8 5μm)and 1 to 6 conidiophores are clustere in a bulb.”
t0“HELMINTHOSPORIUM SOLANI”
Claim · model-written summary
Conidia were brown and arranged in whorls.
- Taxon
- Helminthosporium solaniHelminthosporium solanit0
- Outcome
- Conidia are brown, arranged in whorlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conidia are brown, arranged in whorls arising singly or in groups from the distal ends.”
t0“HELMINTHOSPORIUM SOLANI”
Claim · model-written summary
Conidia were straight or slightly curved and had three to eight septa.
- Taxon
- Helminthosporium solaniHelminthosporium solanit0
- Outcome
- Shape of conidiae0
- Value
- 3 to 8e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shape of conidia are straight, slightly curved, and have 3 to 8 septate.”
t0“HELMINTHOSPORIUM SOLANI”
Claim · model-written summary
Conidia measured 20～80μm ×7 5～10μm.
- Taxon
- Helminthosporium solaniHelminthosporium solanit0
- Outcome
- Size of condiae0
- Value
- 20～80μm ×7 5～10μme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Size of condia with tapered tip was 20～80μm ×7 5～10μm(avg. 50×8 5μm).”
t0“HELMINTHOSPORIUM SOLANI”
Claim · model-written summary
Conidial sporulation did not differ between dark and light incubation.
- Taxon
- Helminthosporium solaniHelminthosporium solanit0
- Outcome
- Sporulation of conidiae0
- Direction
- not differencee0
- Comparator
- dark or light incubation conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sporulation of conidia was not difference depending on dark or light incubation conditions.”
t0“HELMINTHOSPORIUM SOLANI”
Claim · model-written summary
Artificial inoculation of tuber surfaces confirmed pathogenicity.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- artifical inoculation on the tuber surfacee0
- Outcome
- Pathogenicity of the funguse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato tubers”
e0“Pathogenicity of the fungus was confirmed by artifical inoculation on the tuber surface.”
Claim · model-written summary
The authors report the first Chinese occurrence of potato silver scurf caused by Helminthosporium solani.
- Taxon
- PotatoSolanum tuberosumt0
- Interactor
- Helminthosporium solaniHelminthosporium solanie0pathogen
- Outcome
- potato sliver scurfe0
- Setting
- Chinae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato tubers”
e0“This is the first report in China of potato sliver scurf caused by Helminthosporium solani.”