Abstract
Suspensions of a Gram negative, non motile nutritionally fastidious bacterium, cultured from clove trees affected by Sumatra disease and inoculated by needle puncture into the xylem of seedling cloves and young trees, caused the death of over 60% of the plants withing 2 year. Bacteria, confined to zylem vesssels, occurred throughout the vascular systems of dying plants and were also still active in some of the plants which survived for 3 years after inoculation. Bactria resembling those used as inoculum were readily reisolated form dying plants but not from any water‐treated controls. Symptoms in experimental plants and the appearance and distribution of vessels occluded by bacteria were indistinguishable from those resulting from natural infection. All clove types tested were susceptible, including progeny from trees which had survived past disease attack. Result suggest the importance of using vigorously growing plants and providing protection against full sunlight during incubation for the successful establishment of beacterial infection in juvenile clove plants follwing mechanical inoculation.
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Claims 6
Claim · model-written summary
Bacterial inoculation killed over 60% of seedling cloves and young trees within two years.
- Taxon
- clove trees
Syzygium aromaticume0 - Treatment
- inoculated by needle puncturee0
- Outcome
- death of over 60% of the plantse0
- Direction
- caused the deathe0
- Value
- over 60%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bacterium, cultured from clove trees affected by Sumatra disease and inoculated by needle puncture into the xylem of seedling cloves and young trees, caused the death of over 60% of the plants withing 2 year”
Claim · model-written summary
Bacteria occurred throughout the vascular systems of dying plants and remained active in some survivors after three years.
- Taxon
- clovesSyzygium aromaticumt0
- Outcome
- occurred throughout the vascular systems of dying plantse0
- Qualifier
- survived for 3 years after inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bacteria, confined to zylem vesssels, occurred throughout the vascular systems of dying plants and were also still active in some of the plants which survived for 3 years after inoculation.”
t0“cloves”
Claim · model-written summary
Inoculum-like bacteria were reisolated from dying plants but not water-treated controls.
- Taxon
- clovesSyzygium aromaticumt0
- Outcome
- readily reisolated form dying plantse0
- Comparator
- water‐treated controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bactria resembling those used as inoculum were readily reisolated form dying plants but not from any water‐treated controls.”
t0“cloves”
Claim · model-written summary
Experimental symptoms and bacterial vessel occlusion matched natural infection.
- Taxon
- clovesSyzygium aromaticumt0
- Outcome
- Symptoms in experimental plants and the appearance and distribution of vessels occluded by bacteriae0
- Comparator
- natural infectione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Symptoms in experimental plants and the appearance and distribution of vessels occluded by bacteria were indistinguishable from those resulting from natural infection.”
t0“cloves”
Claim · model-written summary
All tested clove types were susceptible, including descendants of trees that survived past disease.
- Taxon
- cloveSyzygium aromaticume0
- Material
- progeny from trees which had survived past disease attacke0
- Outcome
- susceptiblee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All clove types tested were susceptible, including progeny from trees which had survived past disease attack.”
Claim · model-written summary
The authors suggest vigorous plants and protection from full sunlight to establish bacterial infection after mechanical inoculation.
- Taxon
- cloveSyzygium aromaticume0
- Interactor
- beacteriale0pathogen
- Outcome
- using vigorously growing plants and providing protection against full sunlight during incubatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“importance of using vigorously growing plants and providing protection against full sunlight during incubation for the successful establishment of beacterial infection in juvenile clove plants follwing mechanical inoculation”