Abstract
Alfalfa mosaic virus (AMV), the only sap-transmissible virus detected in a limited survey of lucerne crops in New South Wales and the Australian Capital Territory, is more common and widespread now than 10 years ago. Twenty-four of 35 lucerne crops and test plots we sampled were infected; from 25 % to over 55 % of plants were infected in plots and crops at Ginninderra, A.C.T. Seven of 10 commercial lucerne seed lots (eight of them imported directly from the U.S.A.) contained seedborne AMV, which infected from 0.4 to 1.9% of seedlings. The three lucerne aphids, the bluegreen aphid (Acyrthosiphon kondoi), pea aphid (A. pisum) and the spotted alfalfa aphid (Therioaphis trifolii f. maculata), all transmitted AMV in the non-persistent manner. Feeding-preference tests indicate that spotted alfalfa aphids prefer to feed on AMV-infected Siriver lucerne than on healthy Siriver, but they do not discriminate between healthy and AMV-infected Hunter River lucerne. The implications of these results are discussed.
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Claims 10
Claim · model-written summary
AMV was the only sap-transmissible virus detected and was more common and widespread than ten years earlier.
- Taxon
- lucerne
Medicago sativae0 - Interactor
- Alfalfa mosaic virus (AMV)e0pathogen
- Outcome
- Alfalfa mosaic virus (AMV)e0
- Direction
- more common and widespreade0
- Setting
- New South Wales and the Australian Capital Territorye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alfalfa mosaic virus (AMV), the only sap-transmissible virus detected in a limited survey of lucerne crops in New South Wales and the Australian Capital Territory, is more common and widespread now than 10 years ago”
Claim · model-written summary
AMV infected 24 of 35 sampled lucerne crops and plots.
- Taxon
- lucerneMedicago sativae0
- Outcome
- crops and test plots we sampled were infectede0
- Value
- Twenty-four of 35e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Twenty-four of 35 lucerne crops and test plots we sampled were infected”
Claim · model-written summary
AMV infected 25% to over 55% of plants at Ginninderra.
Not reportedTaxon
Verbatim
e0“from 25 % to over 55 % of plants were infected in plots and crops at Ginninderra, A.C.T.”
Claim · model-written summary
Seven of ten commercial lucerne seed lots contained seedborne AMV.
- Taxon
- lucerneMedicago sativae0
- Interactor
- AMVe0pathogen
- Outcome
- seed lotse0
- Value
- Seven of 10e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seven of 10 commercial lucerne seed lots (eight of them imported directly from the U.S.A.) contained seedborne AMV”
Claim · model-written summary
Seedborne AMV infected 0.4 to 1.9% of seedlings.
Not reportedTaxon
Verbatim
e0“which infected from 0.4 to 1.9% of seedlings”
Claim · model-written summary
Bluegreen aphids transmitted AMV non-persistently.
- Interactor
- bluegreen aphid (Acyrthosiphon kondoi)
Acyrthosiphon kondoie0pest - Outcome
- transmitted AMVe0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the bluegreen aphid (Acyrthosiphon kondoi), pea aphid (A. pisum) and the spotted alfalfa aphid (Therioaphis trifolii f. maculata), all transmitted AMV in the non-persistent manner”
Claim · model-written summary
Pea aphids transmitted AMV non-persistently.
- Interactor
- pea aphid (A. pisum)
-PLoS.jpg?width=60)
Acyrthosiphon pisume0pest - Outcome
- transmitted AMVe0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
-PLoS.jpg?width=500)
Verbatim
e0“pea aphid (A. pisum) and the spotted alfalfa aphid (Therioaphis trifolii f. maculata), all transmitted AMV in the non-persistent manner”
Claim · model-written summary
Spotted alfalfa aphids transmitted AMV non-persistently.
- Interactor
- spotted alfalfa aphid (Therioaphis trifolii f. maculata)
Therioaphis trifoliie0pest - Outcome
- transmitted AMVe0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the spotted alfalfa aphid (Therioaphis trifolii f. maculata), all transmitted AMV in the non-persistent manner”
Claim · model-written summary
Spotted alfalfa aphids preferred AMV-infected Siriver lucerne over healthy Siriver.
- Taxon
- lucerneMedicago sativae0
- Material
- Sirivere0
- Interactor
- spotted alfalfa aphidse0pest
- Outcome
- spotted alfalfa aphids prefer to feede0
- Direction
- prefere0
- Comparator
- healthy Sirivere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spotted alfalfa aphids prefer to feed on AMV-infected Siriver lucerne than on healthy Siriver”
Claim · model-written summary
Spotted alfalfa aphids did not discriminate between healthy and infected Hunter River lucerne.
- Taxon
- lucerneMedicago sativae0
- Material
- Hunter Rivere0
- Outcome
- do not discriminatee0
Not reportedInteractor
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“they do not discriminate between healthy and AMV-infected Hunter River lucerne”