Abstract
The obligate bitrophic fungus Puccinia striiformis f. sp. tritici (Pst) causes stripe (yellow) rust on wheat worldwide. Here, we report a novel fungal strain able to hyperparasitize Pst. The strain was isolated from grey-colored rust pustules, and was identified as Alternaria alternata (Fr.: Fr.) keissler based on a combination of morphological characteristics and multi-locus (ITS, GAPDH, and RPB2) phylogeny. Upon artificial inoculation, the hyperparasite reduced the production and viability of urediniospores, and produced a typical grey-colored rust pustule symptom. Scanning electron microscopy demonstrated that the strain could efficiently penetrate and colonize Pst urediniospores. This study first demonstrates that A. alternata could parasitize Pst and indicates its potential application in the biological control of wheat stripe rust disease.
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Claims 6
Claim · model-written summary
The hyperparasite strain was identified as Alternaria alternata by morphology and multilocus phylogeny.
- Taxon
- Wheat
Triticum aestivumt0 - Interactor
- Alternaria alternata (Fr.: Fr.) keissler
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Alternaria alternatae0biocontrol_agent - Outcome
- identified as Alternaria alternata (Fr.: Fr.) keisslere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The strain was isolated from grey-colored rust pustules, and was identified as Alternaria alternata (Fr.: Fr.) keissler based on a combination of morphological characteristics and multi-locus (ITS, GAPDH, and RPB2) phylogeny”
t0“Wheat Stripe Rust”
Claim · model-written summary
Artificial inoculation with the hyperparasite reduced Pst urediniospore production.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- artificial inoculatione0
- Interactor
- Puccinia striiformis f. sp. tritici
Puccinia striiformis f. sp. triticie1pathogen - Second interactor
- Alternaria alternata (Fr.: Fr.) keisslerAlternaria alternatae2biocontrol_agent
- Outcome
- productione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Upon artificial inoculation, the hyperparasite reduced the production and viability of urediniospores”
e1“Puccinia striiformis f. sp. tritici (Pst)”
e2“Alternaria alternata (Fr.: Fr.) keissler”
t0“Wheat Stripe Rust”
Claim · model-written summary
Artificial inoculation with the hyperparasite reduced Pst urediniospore viability.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- artificial inoculatione0
- Interactor
- Puccinia striiformis f. sp. triticiPuccinia striiformis f. sp. triticie1pathogen
- Second interactor
- Alternaria alternata (Fr.: Fr.) keisslerAlternaria alternatae2biocontrol_agent
- Outcome
- viability of urediniosporese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Upon artificial inoculation, the hyperparasite reduced the production and viability of urediniospores”
e1“Puccinia striiformis f. sp. tritici (Pst)”
e2“Alternaria alternata (Fr.: Fr.) keissler”
t0“Wheat Stripe Rust”
Claim · model-written summary
Artificial inoculation produced a grey-colored rust pustule symptom.
- Taxon
- WheatTriticum aestivumt0
- Interactor
- Alternaria alternata (Fr.: Fr.) keisslerAlternaria alternatae1biocontrol_agent
- Outcome
- grey-colored rust pustule symptome0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“produced a typical grey-colored rust pustule symptom”
e1“Alternaria alternata (Fr.: Fr.) keissler”
t0“Wheat Stripe Rust”
Claim · model-written summary
The strain penetrated and colonized Pst urediniospores.
- Taxon
- WheatTriticum aestivumt0
- Interactor
- Puccinia striiformis f. sp. triticiPuccinia striiformis f. sp. triticie2pathogen
- Second interactor
- Alternaria alternata (Fr.: Fr.) keisslerAlternaria alternatae1biocontrol_agent
- Outcome
- penetrate and colonize Pst urediniosporese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the strain could efficiently penetrate and colonize Pst urediniospores”
e1“Alternaria alternata (Fr.: Fr.) keissler”
e2“Puccinia striiformis f. sp. tritici (Pst)”
t0“Wheat Stripe Rust”
Claim · model-written summary
The authors conclude A. alternata can parasitize Pst and may have biological-control potential.
- Taxon
- WheatTriticum aestivumt0
- Interactor
- A. alternataAlternaria alternatae0biocontrol_agent
- Outcome
- biological control of wheat stripe rust diseasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A. alternata could parasitize Pst and indicates its potential application in the biological control of wheat stripe rust disease”
t0“Wheat Stripe Rust”
The same questions in other papers
inoculation · Puccinia striiformis f. sp. tritici · Triticum aestivum (wheat)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.