Abstract
This study was carried out to examine the possibility of utilizing Bidens pilosa , a weed widely distributed in the subtropics and the tropics, for weed and plant fungus control. The extract of B. pilosa shows strong phytotoxic action against the growth of Raphanus sativus and Echinochloa crus‐galli and antifungal activity against phytopathogens in bioassays. The extract of the roots exhibited plant growth inhibitory activity more than those of the leaves and stems. Fifteen phenolic compounds, including pyrocatechin, salicylic acid, p ‐vinylguaiacol, dimethoxyphenol, eugenol, 4‐ethyl‐1,2‐benzenediol, iso‐ vanillin, 2‐hydroxy‐6‐methylbenzaldehyde, vanillin, vanillic acid, p ‐hydroxybenzoic acid, protocatechuic acid, p ‐coumaric acid, ferulic acid, and caffeic acid were identified by gas chromatography–mass spectrometry. Caffeic acid was in the highest amount among the detected substances. Dimethoxyphenol and vanillic acid were found only in the roots of B. pilosa . Ferulic acid and p ‐hydroxybenzoic acid were higher in the roots than in the leaves and stems. These identified constituents might be responsible for the phytotoxic and fungitoxic activities of B. pilosa.
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Claims 9
Claim · model-written summary
Bidens extract inhibited Raphanus sativus growth.
- Taxon
- Raphanus sativus
Raphanus sativuse0 - Treatment
- extract of B. pilosae0
- Interactor
- B. pilosa
Bidens pilosae0other - Outcome
- growth of Raphanus sativuse0
- Direction
- phytotoxice0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The extract of B. pilosa shows strong phytotoxic action against the growth of Raphanus sativus and Echinochloa crus‐galli”
Claim · model-written summary
Bidens extract inhibited Echinochloa crus-galli growth.
- Taxon
- Echinochloa crus‐galli
Echinochloa crus-gallie0 - Treatment
- extract of B. pilosae0
- Interactor
- B. pilosaBidens pilosae0other
- Outcome
- growth of Raphanus sativus and Echinochloa crus‐gallie0
- Direction
- phytotoxice0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The extract of B. pilosa shows strong phytotoxic action against the growth of Raphanus sativus and Echinochloa crus‐galli”
Claim · model-written summary
Bidens extract showed antifungal activity against phytopathogens.
- Taxon
- Bidens pilosa L. var. radiata Scherff
Bidens alba var. radiatat0 - Interactor
- phytopathogense0pathogen
- Outcome
- antifungal activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“antifungal activity against phytopathogens in bioassays”
t0“Bidens pilosa L. var. radiata Scherff”
Claim · model-written summary
Root extract had more plant-growth inhibition than leaf and stem extracts.
- Taxon
- Bidens pilosa L. var. radiata ScherffBidens alba var. radiatat0
- Treatment
- extract of the rootse0
- Outcome
- plant growth inhibitory activitye0
- Direction
- moree0
- Comparator
- leaves and stemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The extract of the roots exhibited plant growth inhibitory activity more than those of the leaves and stems”
t0“Bidens pilosa L. var. radiata Scherff”
Claim · model-written summary
Fifteen phenolic compounds were identified in Bidens extract.
- Taxon
- Bidens pilosa L. var. radiata ScherffBidens alba var. radiatat0
- Outcome
- phenolic compoundse0
- Value
- Fifteene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fifteen phenolic compounds, including pyrocatechin, salicylic acid, p ‐vinylguaiacol, dimethoxyphenol, eugenol, 4‐ethyl‐1,2‐benzenediol, iso‐ vanillin, 2‐hydroxy‐6‐methylbenzaldehyde, vanillin, vanillic acid, p ‐hydroxybenzoic acid, protocatechuic acid, p ‐coumaric acid, ferulic acid, and caffeic acid were identified by gas chromatography–mass spectrometry”
t0“Bidens pilosa L. var. radiata Scherff”
Claim · model-written summary
Caffeic acid was the most abundant detected constituent.
- Taxon
- Bidens pilosa L. var. radiata ScherffBidens alba var. radiatat0
- Outcome
- Caffeic acide0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Caffeic acid was in the highest amount among the detected substances”
t0“Bidens pilosa L. var. radiata Scherff”
Claim · model-written summary
Dimethoxyphenol and vanillic acid occurred only in Bidens roots.
- Taxon
- B. pilosaBidens pilosae0
- Organ / stage
- rootse0
- Outcome
- Dimethoxyphenol and vanillic acide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dimethoxyphenol and vanillic acid were found only in the roots of B. pilosa”
Claim · model-written summary
Ferulic acid and p-hydroxybenzoic acid were higher in roots than leaves or stems.
- Taxon
- Bidens pilosa L. var. radiata ScherffBidens alba var. radiatat0
- Organ / stage
- rootse0
- Outcome
- Ferulic acid and p ‐hydroxybenzoic acide0
- Direction
- highere0
- Comparator
- leaves and stemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ferulic acid and p ‐hydroxybenzoic acid were higher in the roots than in the leaves and stems”
t0“Bidens pilosa L. var. radiata Scherff”
Claim · model-written summary
The identified constituents may explain the extract phytotoxic and fungitoxic activities.
- Taxon
- B. pilosaBidens pilosae0
- Outcome
- phytotoxic and fungitoxic activitiese0
- Qualifier
- identified constituentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These identified constituents might be responsible for the phytotoxic and fungitoxic activities of B. pilosa”
The same questions in other papers
botanical · growth · Bidens albaPositive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
botanical · growth · Echinochloa crus-galli (barnyard grass)Positive and negative results
44 papers in the same direction as this paper · 14 in the opposite direction
- negative
- negative
- negative
55 papers more in this group
See all 59 papers →botanical · growth · Raphanus sativus (radish)Positive and negative results
52 papers in the same direction as this paper · 99 in the opposite direction
- negative
- negative
- no effect
148 papers more in this group
See all 152 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.