Abstract
Isolates of Ascochyta fabae from faba bean (Vicia faba) and A. lentis from lentil (Lens culinaris) collected from different countries were used in this study. The Didymella teleomorph (sexual state) of each fungus was induced to develop and mature on inoculated sterile lentil stems. Both fungi were heterothallic, with two mating types, designated MAT1-1 and MAT1-2. When certain isolates of A. fabae and A. lentis were crossed, hybrid pseudothecia developed. Growth, sporulation, colony appearance, morphology, and pathogenicity of the hybrid progeny frequently differed greatly from the parent isolates. Inoculations with single-ascospore progeny from matings among compatible isolates of A. fabae caused disease in faba bean but not in lentil; inoculations with single-ascospore progeny from matings among compatible isolates of A. lentis incited disease in lentil but not in faba bean. Inoculations with single-ascospore progeny from crosses between faba bean and lentil isolates did not induce disease in either host. Asci from crosses between A. fabae and A. lentis mostly contained fewer than eight ascospores that were, on average, larger than those from eight-spored asci. Matings among certain isolates of A. fabae resulted in production of pseudothecia with ascospores considerably larger than is typical for D. fabae. Random amplified polymorphic DNA (RAPD) banding patterns of Ascochyta isolates from faba bean and lentil are clearly different, and banding patterns from hybrid progeny from crosses between A. fabae and A. lentis confirmed hybridity. RAPD markers proved useful in supporting identifications of ascospore isolates from faba bean to known Ascochyta species. Dendrogram analysis indicated similarity between the two fungal species was low. The pathogenicity tests, morphological characteristics, and RAPD markers indicate that A. fabae and A. lentis represent distinct taxa. D. lentis, with its anamorph, A. lentis, is proposed as a new species that is distinct from D. fabae, with its anamorph, A. fabae.
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Claims 6
Claim · model-written summary
A. fabae mating progeny caused disease in faba bean.
- Taxon
- faba bean
Vicia fabae0 - Treatment
- Inoculations with single-ascospore progeny from matings among compatible isolates of A. fabaee0
- Interactor
- A. fabae
.jpg?width=60)
Ascochyta fabaee0pathogen - Outcome
- disease in faba beane0
- Direction
- causede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Inoculations with single-ascospore progeny from matings among compatible isolates of A. fabae caused disease in faba bean but not in lentil”
Claim · model-written summary
A. fabae mating progeny did not cause disease in lentil.
- Taxon
- lentil
Lens culinarise0 - Treatment
- Inoculations with single-ascospore progeny from matings among compatible isolates of A. fabaee0
- Interactor
- A. fabaeAscochyta fabaee0pathogen
- Outcome
- diseasee0
- Direction
- note0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculations with single-ascospore progeny from matings among compatible isolates of A. fabae caused disease in faba bean but not in lentil”
Claim · model-written summary
A. lentis mating progeny caused disease in lentil.
- Taxon
- lentilLens culinarise0
- Treatment
- inoculations with single-ascospore progeny from matings among compatible isolates of A. lentise0
- Interactor
- A. lentisAscochyta lentise0pathogen
- Outcome
- disease in lentile0
- Direction
- incitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculations with single-ascospore progeny from matings among compatible isolates of A. lentis incited disease in lentil but not in faba bean”
Claim · model-written summary
A. lentis mating progeny did not cause disease in faba bean.
- Taxon
- faba beanVicia fabae0
- Treatment
- inoculations with single-ascospore progeny from matings among compatible isolates of A. lentise0
- Interactor
- A. lentisAscochyta lentise0pathogen
- Outcome
- diseasee0
- Direction
- note0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculations with single-ascospore progeny from matings among compatible isolates of A. lentis incited disease in lentil but not in faba bean”
Claim · model-written summary
Hybrid progeny did not cause disease in either faba bean or lentil.
- Taxon
- faba beanVicia fabae0
- Treatment
- Inoculations with single-ascospore progeny from crosses between faba bean and lentil isolatese0
- Outcome
- diseasee0
- Direction
- did not inducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculations with single-ascospore progeny from crosses between faba bean and lentil isolates did not induce disease in either host”
Claim · model-written summary
Hybrid progeny did not cause disease in lentil.
- Taxon
- lentilLens culinarise0
- Treatment
- Inoculations with single-ascospore progeny from crosses between faba bean and lentil isolatese0
- Outcome
- diseasee0
- Direction
- did not inducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculations with single-ascospore progeny from crosses between faba bean and lentil isolates did not induce disease in either host”
t0“from lentil (Lens culinaris)”
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See all 23 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.