Abstract
1. Thirty two species of leguminous plants were inoculated with the sap from the young shoots of Satsuma orange showing symptoms of Satsuma dwarf. Nine species including cowpea (Vigna sinensis Endl.), asparagus bean (Vigna sesquipedalis Wight), kidney bean (Phaseolus vulgaris L.), Crotalaria spectabilis Roth, peanut (Arachis hypogaea L.), garden pea (Pisum sativum L.), Chinese milk vetch (Astragalus sinicus L.), sword bean (Canavalia gladiota DC.), and Japanese clover (Microlespedeza striata Makino) were proved to be susceptible to a virus present in the affetced trees. Two species of Chenopodiaceae and three species of Cucurbitaceae were not subject to it. The authors temporarily propose the name “Satsuma dwarf virus” to this legume infecting virus.2. Among the susceptible plants listed above, Blackeye cowpea and kidney bean (Satisfaction) showed the most characteristic symptoms. The former showed mottling and vein clearing on the leaves, and necrotic streaks on the petioles as well as on the stems. The latter also developed clear mottling and vein clearing on the foliage of most plants that were infected by sap-inoculation. These two species appear to be good indicator plants. However, retransmission from infected legume plants to Satsuma orange has not been successful in the tests so far conducted.3. Higher percentages of infection resulted when the expressed sap was buffered with about an equal volume of 0.05-0.1mol solution of K2HPO4.4. One-month old shoots of affected Satsuma orange were demonstrated to carry highly active virus in the leaves, bark and wood portions. One-year old shoots and relatively old current shoots carried active virus in the wood, but not in the bark of twigs or the leaves.
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Claims 9
Claim · model-written summary
Nine legume species were susceptible to the virus in affected Satsuma trees.
- Taxon
- cowpea
Vigna unguiculatae0 - Interactor
- viruse0pathogen
- Outcome
- susceptible to a viruse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nine species including cowpea (Vigna sinensis Endl.), asparagus bean (Vigna sesquipedalis Wight), kidney bean (Phaseolus vulgaris L.), Crotalaria spectabilis Roth, peanut (Arachis hypogaea L.), garden pea (Pisum sativum L.), Chinese milk vetch (Astragalus sinicus L.), sword bean (Canavalia gladiota DC.), and Japanese clover (Microlespedeza striata Makino) were proved to be susceptible to a virus present in the affetced trees”
Claim · model-written summary
Two Chenopodiaceae and three Cucurbitaceae species were not susceptible.
- Taxon
- ChenopodiaceaeAmaranthaceaee0
- Outcome
- not subject to ite0
Verbatim
e0“Two species of Chenopodiaceae and three species of Cucurbitaceae were not subject to it”
Claim · model-written summary
Blackeye cowpea showed mottling and vein clearing on leaves and necrotic streaks on petioles and stems.
Verbatim
e0“Blackeye cowpea and kidney bean (Satisfaction) showed the most characteristic symptoms. The former showed mottling and vein clearing on the leaves, and necrotic streaks on the petioles as well as on the stems”
Claim · model-written summary
Infected kidney bean showed clear foliage mottling and vein clearing.
- Taxon
- kidney bean
Phaseolus vulgarise0 - Outcome
- clear mottling and vein clearing on the foliagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“kidney bean (Satisfaction) showed the most characteristic symptoms. The former showed mottling and vein clearing on the leaves, and necrotic streaks on the petioles as well as on the stems. The latter also developed clear mottling and vein clearing on the foliage of most plants that were infected by sap-inoculation”
Claim · model-written summary
Blackeye cowpea and kidney bean appeared useful as indicator plants.
Verbatim
e0“These two species appear to be good indicator plants”
e1“Blackeye cowpea and kidney bean (Satisfaction)”
Claim · model-written summary
Retransmission from infected legume plants to Satsuma orange was unsuccessful.
- Taxon
- Satsuma orange
Citrus unshiue0 - Outcome
- retransmission from infected legume plants to Satsuma orangee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“retransmission from infected legume plants to Satsuma orange has not been successful in the tests so far conducted”
Claim · model-written summary
Buffering expressed sap with K2HPO4 increased infection percentages.
- Taxon
- leguminous plantse1
- Treatment
- buffered with about an equal volume of 0.05-0.1mol solution of K2HPO4e0
- Outcome
- percentages of infectione0
- Direction
- Highere0
Not reportedComparator
Verbatim
e0“Higher percentages of infection resulted when the expressed sap was buffered with about an equal volume of 0.05-0.1mol solution of K2HPO4”
t0“indicator plants for citrus viruses”
e1“leguminous plants were inoculated with the sap”
Claim · model-written summary
One-month-old affected Satsuma shoots carried highly active virus in leaves, bark and wood.
- Taxon
- Satsuma orangeCitrus unshiue0
- Organ / stage
- One-month old shootse0
- Interactor
- viruse0pathogen
- Outcome
- highly active virus in the leaves, bark and wood portionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One-month old shoots of affected Satsuma orange were demonstrated to carry highly active virus in the leaves, bark and wood portions”
Claim · model-written summary
One-year-old and older current Satsuma shoots carried active virus in wood but not twig bark or leaves.
- Taxon
- Satsuma orangeCitrus unshiue1
- Organ / stage
- One-year old shoots and relatively old current shootse0
- Interactor
- viruse0pathogen
- Outcome
- active virus in the wood, but not in the bark of twigs or the leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One-year old shoots and relatively old current shoots carried active virus in the wood, but not in the bark of twigs or the leaves”
e1“affected Satsuma orange”