Abstract
Abstract Herbicides are important tools for weed control in modern agriculture. In the search for potential herbicidal natural products from fungal species, harzianum A and B were identified from the biofertilizer fungus, Trichoderma brevicompactum . In the phytotoxicity assays on the dicot species Brassica chinensis , harzianum A and B reduced both shoot and root lengths at low concentrations and inhibited the seed germination at 2 μg mL −1 . In addition, harzianum A and B also exhibited phytotoxicity against monocots, Oryza sativa L. cv. Nipponbare and Echinochloa crusgalli L. Beauv.. Compared with a common herbicide, 2,4-dichlorophenoxyacetic acid, harzianum A and B performed similar activity in a pot assay, and were more effective in post-emergence than pre-emergence conditions. Harzianum A and B have potential as efficient herbicide for controlling important dicotyledon and monocotyledon weeds at low concentrations. They can be sprayed in liquid form in both pre- and post-emergence conditions. Our results confirmed the importance of these molecules for the development of new herbicides.
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Claims 7
Claim · model-written summary
Harzianum A reduced shoot and root lengths in Brassica chinensis.
- Taxon
- Brassica chinensis
.jpg?width=60)
Brassica rapa subsp. chinensise1 - Treatment
- harzianum Ae0
- Outcome
- shoot and root lengthse0
- Direction
- reducede0
- Qualifier
- low concentrationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“harzianum A and B reduced both shoot and root lengths at low concentrations”
e1“dicot species Brassica chinensis”
Claim · model-written summary
Harzianum B reduced shoot and root lengths in Brassica chinensis.
- Taxon
- Brassica chinensisBrassica rapa subsp. chinensise1
- Treatment
- Be0
- Outcome
- shoot and root lengthse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“harzianum A and B reduced both shoot and root lengths at low concentrations”
e1“dicot species Brassica chinensis”
Claim · model-written summary
Harzianum A inhibited seed germination at 2 μg mL −1.
- Taxon
- Brassica chinensisBrassica rapa subsp. chinensise1
- Treatment
- harzianum Ae0
- Outcome
- seed germinatione0
- Direction
- inhibitede0
- Value
- 2 μg mL −1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“harzianum A and B reduced both shoot and root lengths at low concentrations and inhibited the seed germination at 2 μg mL −1”
e1“dicot species Brassica chinensis”
Claim · model-written summary
Harzianum B inhibited seed germination at 2 μg mL −1.
- Taxon
- Brassica chinensisBrassica rapa subsp. chinensise1
- Treatment
- Be0
- Outcome
- seed germinatione0
- Direction
- inhibitede0
- Value
- 2 μg mL −1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“harzianum A and B reduced both shoot and root lengths at low concentrations and inhibited the seed germination at 2 μg mL −1”
e1“dicot species Brassica chinensis”
Claim · model-written summary
Harzianum A and B showed phytotoxicity against rice.
- Taxon
- Brassica chinensisBrassica rapa subsp. chinensise1
- Treatment
- harzianum A and Be0
- Outcome
- phytotoxicity against monocotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“harzianum A and B also exhibited phytotoxicity against monocots, Oryza sativa L. cv. Nipponbare and Echinochloa crusgalli L. Beauv.”
e1“dicot species Brassica chinensis”
Claim · model-written summary
Harzianum A and B had similar pot-assay activity to 2,4-dichlorophenoxyacetic acid.
- Taxon
- Brassica chinensisBrassica rapa subsp. chinensise1
- Outcome
- similar activitye0
- Comparator
- 2,4-dichlorophenoxyacetic acide0
- Setting
- pot assaye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with a common herbicide, 2,4-dichlorophenoxyacetic acid, harzianum A and B performed similar activity in a pot assay”
e1“dicot species Brassica chinensis”
Claim · model-written summary
Harzianum A and B were more effective after emergence than before emergence.
- Taxon
- Brassica chinensisBrassica rapa subsp. chinensise1
- Outcome
- more effectivee0
- Direction
- more effectivee0
- Comparator
- pre-emergence conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“were more effective in post-emergence than pre-emergence conditions”
e1“dicot species Brassica chinensis”
The same questions in other papers
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- positive
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5 papers more in this group
See all 9 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.