Abstract
In the last years Conyza bonariensis has become an important weed and control is difficult with the use of current technology in Argentinean pampas region. The increasing prevalence of herbicide-resistant weed species, public concern related to pesticide use and the introduction of government policies for pesticide reduction, is driving the search for alternative methods to chemical control. The aims of the present study were to detect fungal diseases associated with C. bonariensis, to identify fungal isolates from the symptomatic leaves and to confirm through Koch’s postulates the isolates pathogenicity. Mycological analysis of symptomatic leaves showed the presence of twelve genera of filamentous fungi. Among 116 isolates, Colletotrichum spp. was the most prevalent genus followed by Nigrospora spp. and Septoria spp. In the pathogenicity assays, 22 out of 116 isolates were able to comply with the Koch’s postulates. The pathogenic isolates were included into three genera Alternaria spp., Colletotrichum spp. and Septoria spp. This study provides the first report that demonstrates pathogenicity of fungal isolates on C. bonariensis in Argentina and represents the first step in a future biocontrol program.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
Symptomatic leaves contained twelve genera of filamentous fungi.
- Taxon
- Conyza bonariensis
Conyza bonariensist0 - Organ / stage
- symptomatic leavese0
- Outcome
- twelve genera of filamentous fungie0
- Value
- twelve generae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mycological analysis of symptomatic leaves showed the presence of twelve genera of filamentous fungi”
t0“Conyza bonariensis”
Claim · model-written summary
Colletotrichum spp. was the most prevalent genus among 116 isolates, followed by Nigrospora spp. and Septoria spp.
- Taxon
- Colletotrichum spp.
Colletotrichume0 - Outcome
- most prevalent genuse0
- Value
- 116 isolatese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among 116 isolates, Colletotrichum spp. was the most prevalent genus followed by Nigrospora spp. and Septoria spp.”
Claim · model-written summary
Twenty-two of 116 isolates fulfilled Koch’s postulates in pathogenicity assays.
- Taxon
- Conyza bonariensisConyza bonariensist0
- Outcome
- comply with the Koch’s postulatese0
- Value
- 22 out of 116 isolatese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the pathogenicity assays, 22 out of 116 isolates were able to comply with the Koch’s postulates”
t0“Conyza bonariensis”
Claim · model-written summary
Pathogenic isolates belonged to Alternaria spp., Colletotrichum spp. and Septoria spp.
- Taxon
- Conyza bonariensisConyza bonariensist0
- Interactor
- Alternaria spp.
Alternariae0pathogen - Outcome
- pathogenic isolatese0
- Qualifier
- Colletotrichum spp. and Septoria spp.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pathogenic isolates were included into three genera Alternaria spp., Colletotrichum spp. and Septoria spp.”
t0“Conyza bonariensis”
Claim · model-written summary
The study first demonstrated pathogenicity of fungal isolates on C. bonariensis in Argentina.
- Taxon
- C. bonariensisConyza bonariensise0
- Outcome
- pathogenicity of fungal isolatese0
- Setting
- Argentinae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“first report that demonstrates pathogenicity of fungal isolates on C. bonariensis in Argentina”