Abstract
Summary Laurel wilt is a devastating invasive disease of members of the Lauraceae plant family. It is caused by the fungus Raffaelea lauricola , which is a nutritional symbiont of its ambrosia beetle vector, Xyleborus glabratus . In the United States, six Raffaelea spp., in addition to R. lauricola , have been recovered from mycangia of X. glabratus . We compared the response of two laurel wilt suspects, swamp bay ( Persea palustris ) and redbay ( Persea borbonia ), to five of these species, another undescribed Raffaelea sp., and R. lauricola . Six weeks after inoculation, only R. lauricola caused significantly greater symptoms than water inoculations. The fungi varied in their ability to move systemically and be recovered from the host at the end of the experiment. Stem hydraulic conductivity was decreased by R. lauricola , but none of the other taxa. Although the roles these fungi play in the life cycle of X. glabratus are not known, they do not appear to be pathogens on these host tree species.
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Claims 7
Claim · model-written summary
R. lauricola caused significantly greater symptoms than water inoculation in swamp bay.
- Taxon
- swamp bay
Persea palustrist0 - Treatment
- R. lauricolae0
- Interactor
- R. lauricola
.jpg?width=60)
Harringtonia lauricolae0pathogen - Outcome
- symptomse0
- Direction
- greatere0
- Comparator
- water inoculationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“only R. lauricola caused significantly greater symptoms than water inoculations”
t0“swamp bay, Persea palustris”
Claim · model-written summary
R. lauricola caused significantly greater symptoms than water inoculation in redbay.
- Taxon
- redbay
Persea borboniat0 - Treatment
- R. lauricolae0
- Interactor
- R. lauricolaHarringtonia lauricolae0pathogen
- Outcome
- symptomse0
- Direction
- greatere0
- Comparator
- water inoculationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only R. lauricola caused significantly greater symptoms than water inoculations”
t0“redbay, P. borbonia”
Claim · model-written summary
Raffaelea fungi varied in systemic movement and recovery from hosts.
- Outcome
- ability to move systemically and be recovered from the hoste0
Verbatim
e0“The fungi varied in their ability to move systemically and be recovered from the host at the end of the experiment.”
e1“six Raffaelea spp.”
Claim · model-written summary
R. lauricola decreased stem hydraulic conductivity in swamp bay.
- Taxon
- swamp bayPersea palustrist0
- Treatment
- R. lauricolae0
- Interactor
- R. lauricolaHarringtonia lauricolae0pathogen
- Outcome
- Stem hydraulic conductivitye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stem hydraulic conductivity was decreased by R. lauricola”
t0“swamp bay, Persea palustris”
Claim · model-written summary
R. lauricola decreased stem hydraulic conductivity in redbay.
- Taxon
- redbayPersea borboniat0
- Treatment
- R. lauricolae0
- Interactor
- R. lauricolaHarringtonia lauricolae0pathogen
- Outcome
- Stem hydraulic conductivitye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stem hydraulic conductivity was decreased by R. lauricola”
t0“redbay, P. borbonia”
Claim · model-written summary
Other Raffaelea taxa did not decrease stem hydraulic conductivity in these hosts.
- Taxon
- swamp bayPersea palustrist0
- Treatment
- other taxae0
- Outcome
- Stem hydraulic conductivitye1
- Direction
- nonee0
- Comparator
- R. lauricolae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but none of the other taxa”
e1“Stem hydraulic conductivity was decreased by R. lauricola”
t0“swamp bay, Persea palustris, and redbay, P. borbonia”
Claim · model-written summary
The other Raffaelea fungi do not appear pathogenic on swamp bay and redbay.
- Taxon
- swamp bayPersea palustrist0
- Outcome
- do not appear to be pathogense0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“they do not appear to be pathogens on these host tree species”
t0“swamp bay, Persea palustris, and redbay, P. borbonia”
The same questions in other papers
Harringtonia lauricola · disease · Persea palustris (swamp bay)Results agree
1 paper in the same direction as this paper
- negative
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.