Abstract
Objective: To isolate the fungus with phytotoxic activity from the gut of Pantala flavescens larvae and find the phytotoxic lead compound from the fungal metabolites. Methods: QTYC01 was isolated from the gut of P. flavescens larvae by means of spread plate and identified by 5.8S rRNA sequence analysis and morphologic observation. Phytotoxic activities of the fermentation broth and ethyl acetate extracts against the radical growth of weeds as well as the safety of crude extract to the selected crops were tested by Petri dish bioassay. The herbicidal activity of QTYC01 against Echinochloa crusgalli seedlings was carried out by potted bioassay. Fermentation product was purified by recrystallization and identified by extensive spectroscopic analysis. Results: QTYC01 was identified as Curvularia crepinii. The fermentation broth of QTYC01 significantly inhibited the radical growth of E. crusgalli and Amaranthus retroflexus with the inhibition rate of 95.0% and 90.1%, respectively. The fermented liquid showed significant inhibitory activity to the seedling of E. crusgalli with the victimization rate of 71.1%. Under the concentration of 100 μg/mL, ethyl acetate extracts exhibited significant phytotoxic activities against the radical growth of E. crusgalli and A. retroflexus with inhibitory rates of 56.8% and 71.2%, respectively, and showed good security to the selected common crops with the inhibition rate of lower than 33%. Therewith, a bioactive compound was isolated from the ethyl acetate extract and determined as (5Z)-7-oxozeaenol. The compound showed good phytotoxic activity against A. retroflexus with the IC50 value of 4.8 μg/mL. Conclusion: Strain QTYC01 could be potentially developed as a new microbial herbicide.
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Claims 10
Claim · model-written summary
QTYC01 was identified as Curvularia crepinii.
- Interactor
- Curvularia crepiniiCurvularia crepiniie0other
- Outcome
- identified as Curvularia crepiniie0
Not reportedTaxon
Verbatim
e0“QTYC01 was identified as Curvularia crepinii.”
Claim · model-written summary
QTYC01 broth inhibited E. crusgalli radicle growth by 95.0%.
- Taxon
- E. crusgalli
Echinochloa crus-gallie0 - Treatment
- fermentation broth of QTYC01e0
- Outcome
- radical growth of E. crusgallie0
- Direction
- inhibitede0
- Value
- 95.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fermentation broth of QTYC01 significantly inhibited the radical growth of E. crusgalli and Amaranthus retroflexus with the inhibition rate of 95.0% and 90.1%, respectively.”
Claim · model-written summary
QTYC01 broth inhibited Amaranthus retroflexus radicle growth by 90.1%.
- Taxon
- Amaranthus retroflexus
Amaranthus retroflexuse0 - Treatment
- fermentation broth of QTYC01e0
- Outcome
- radical growth of E. crusgalli and Amaranthus retroflexuse0
- Direction
- inhibitede0
- Value
- 90.1%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fermentation broth of QTYC01 significantly inhibited the radical growth of E. crusgalli and Amaranthus retroflexus with the inhibition rate of 95.0% and 90.1%, respectively.”
Claim · model-written summary
Fermented liquid injured E. crusgalli seedlings at a rate of 71.1%.
- Taxon
- E. crusgalliEchinochloa crus-gallie0
- Treatment
- fermented liquide0
- Outcome
- seedling of E. crusgallie0
- Direction
- inhibitorye0
- Value
- 71.1%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fermented liquid showed significant inhibitory activity to the seedling of E. crusgalli with the victimization rate of 71.1%.”
Claim · model-written summary
Ethyl acetate extract inhibited E. crusgalli radicle growth by 56.8%.
- Taxon
- E. crusgalliEchinochloa crus-gallie0
- Treatment
- ethyl acetate extractse0
- Outcome
- radical growth of E. crusgallie0
- Direction
- inhibitorye0
- Value
- 56.8%e0
- Qualifier
- 100 μg/mLe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the concentration of 100 μg/mL, ethyl acetate extracts exhibited significant phytotoxic activities against the radical growth of E. crusgalli and A. retroflexus with inhibitory rates of 56.8% and 71.2%, respectively”
Claim · model-written summary
Ethyl acetate extract inhibited A. retroflexus radicle growth by 71.2%.
- Taxon
- A. retroflexusAmaranthus retroflexuse0
- Treatment
- ethyl acetate extractse0
- Outcome
- radical growth of E. crusgalli and A. retroflexuse0
- Direction
- inhibitorye0
- Value
- 71.2%e0
- Qualifier
- 100 μg/mLe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the concentration of 100 μg/mL, ethyl acetate extracts exhibited significant phytotoxic activities against the radical growth of E. crusgalli and A. retroflexus with inhibitory rates of 56.8% and 71.2%, respectively”
Claim · model-written summary
Ethyl acetate extracts inhibited selected common crops by less than 33%.
Not reportedTreatmentComparator
Verbatim
e0“showed good security to the selected common crops with the inhibition rate of lower than 33%.”
Claim · model-written summary
A bioactive compound in the extract was identified as (5Z)-7-oxozeaenol.
- Outcome
- determined as (5Z)-7-oxozeaenole0
Not reportedTaxon
Verbatim
e0“a bioactive compound was isolated from the ethyl acetate extract and determined as (5Z)-7-oxozeaenol.”
Claim · model-written summary
The compound was phytotoxic to A. retroflexus with IC50 of 4.8 μg/mL.
- Taxon
- A. retroflexusAmaranthus retroflexuse0
- Treatment
- The compounde0
- Outcome
- phytotoxic activity against A. retroflexuse0
- Direction
- goode0
- Value
- 4.8 μg/mLe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The compound showed good phytotoxic activity against A. retroflexus with the IC50 value of 4.8 μg/mL.”
Claim · model-written summary
The authors suggest developing QTYC01 as a microbial herbicide.
Not reportedTaxon
Verbatim
e0“Strain QTYC01 could be potentially developed as a new microbial herbicide.”
The same questions in other papers
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See all 59 papers →processing · growth · Amaranthus retroflexus (redroot amaranth)Results agree
2 papers in the same direction as this paper
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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.