Abstract
Mosaic plants of annual bluegrass, Poa annua L., and soil sample are collected from a barley field in Tottori. X-bodies were found in the epidermal strips of diseased leaves. Electron microscopic examination of leaf-dip preparation revealed rod-like particles measuring 110-160×25mμ. Inoculation with the sap of mosaic annual bluegrass plants effected infection of not only annual bluegrass but also wheat, as determined by mosaic symptoms, and presence of X-bodies and rod particles. Back inoculation from infected wheat to annual blugrass was successful.There was no evidence of virus transmission through seed. Soil transmission of the virus to annual bluegrass and wheat, however, was proved by sowing the seed in the infested soil or by immersing the germinated seeds for 15 days in water mixed with infested soil. Virus was partially purified by differential centrifugation from sap clarified with chloroform and dihydrostreptomycin-sulfate. This virus preparation reacted well with a soil -borne wheat mosaic virus antiserum in complement fixation tests. Resting spores of Polymyxa graminis were found in the roots of naturally infected annual bluegrass.From these results, the virus from Poa annua was identified as soil-borne wheat mosaic virus. Annual bluegrass, a new host, may play some role in the spread of soil-borne mosaic disease of cereals in the field.
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Claims 12
Claim · model-written summary
Diseased annual bluegrass leaves contained X-bodies.
Poa annuaNot reportedInteractor
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“X-bodies were found in the epidermal strips of diseased leaves.”
e1“annual bluegrass, Poa annua L.,”
Claim · model-written summary
Leaf-dip preparations contained rod-like particles measuring 110-160×25mμ.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Electron microscopic examination of leaf-dip preparation revealed rod-like particles measuring 110-160×25mμ.”
e1“annual bluegrass, Poa annua L.,”
Claim · model-written summary
Sap from mosaic annual bluegrass infected annual bluegrass.
- Treatment
- Inoculation with the sap of mosaic annual bluegrass plantse0
- Interactor
- sap of mosaic annual bluegrass plantse0pathogen
- Outcome
- infection of not only annual bluegrasse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation with the sap of mosaic annual bluegrass plants effected infection of not only annual bluegrass but also wheat”
e1“annual bluegrass, Poa annua L.,”
Claim · model-written summary
Sap from mosaic annual bluegrass infected wheat.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- Inoculation with the sap of mosaic annual bluegrass plantse0
- Outcome
- infection of not only annual bluegrass but also wheate0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation with the sap of mosaic annual bluegrass plants effected infection of not only annual bluegrass but also wheat”
Claim · model-written summary
Back inoculation from infected wheat to annual bluegrass succeeded.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Back inoculation from infected wheat to annual blugrass was successful.”
e1“annual bluegrass, Poa annua L.,”
Claim · model-written summary
Virus transmission through seed was not found.
- Outcome
- no evidence of virus transmission through seede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no evidence of virus transmission through seed.”
e1“annual bluegrass, Poa annua L.,”
Claim · model-written summary
Infested soil transmitted the virus to annual bluegrass.
- Treatment
- sowing the seed in the infested soile0
- Outcome
- transmission of the virus to annual bluegrasse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil transmission of the virus to annual bluegrass and wheat, however, was proved by sowing the seed in the infested soil or by immersing the germinated seeds for 15 days in water mixed with infested soil.”
e1“annual bluegrass, Poa annua L.,”
Claim · model-written summary
Infested soil transmitted the virus to wheat.
- Taxon
- wheatTriticum aestivume0
- Treatment
- sowing the seed in the infested soile0
- Outcome
- transmission of the virus to annual bluegrass and wheate0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil transmission of the virus to annual bluegrass and wheat, however, was proved by sowing the seed in the infested soil or by immersing the germinated seeds for 15 days in water mixed with infested soil.”
Claim · model-written summary
Virus preparation reacted with soil-borne wheat mosaic virus antiserum.
- Outcome
- reacted well with a soil -borne wheat mosaic virus antiserume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This virus preparation reacted well with a soil -borne wheat mosaic virus antiserum in complement fixation tests.”
e1“annual bluegrass, Poa annua L.,”
Claim · model-written summary
Resting spores of Polymyxa graminis occurred in roots of naturally infected annual bluegrass.
- Taxon
- annual bluegrasse0
- Organ / stage
- rootse0
- Interactor
- Polymyxa graminis
Polymyxa graminise0other - Outcome
- Resting spores of Polymyxa graminise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Resting spores of Polymyxa graminis were found in the roots of naturally infected annual bluegrass.”
Claim · model-written summary
The virus from Poa annua was identified as soil-borne wheat mosaic virus.
- Interactor
- soil-borne wheat mosaic virusSoil-borne wheat mosaic viruse0pathogen
- Outcome
- identified as soil-borne wheat mosaic viruse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the virus from Poa annua was identified as soil-borne wheat mosaic virus.”
Claim · model-written summary
Annual bluegrass was identified as a new host that may spread soil-borne mosaic disease in cereal fields.
- Taxon
- Annual bluegrasse0
- Outcome
- a new hoste0
- Qualifier
- may play some role in the spread of soil-borne mosaic disease of cereals in the fielde0
Not reportedDirection
Verbatim
e0“Annual bluegrass, a new host, may play some role in the spread of soil-borne mosaic disease of cereals in the field.”
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See all 32 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.