Abstract
The allelopathic potential of nine green seaweed species was examined based on germination and seedling growth of lettuce (Lactuca sativa L.). Out of nine methanol extracts, Capsosiphon fulvescens and Monostroma nitidum extracts completely inhibited germination of L. sativa at 4 mg/filter paper after 24 hr of treatment. Water extracts of these seaweeds generally showed low anti-germination activities than methanol extracts. Of the nine water extracts, Enteromorpha linza extract completely inhibited L. sativa germination at 16 mg/filter paper after 24 hrs. To identify the primary active compounds, C. fulvescens. powder was successively fractionated according to polarity, and the main active agents against L. sativa were determined to be lipids (0.0% germination at 0.5 mg of lipids/paper disc). According to these results, extracts of C. fulvescens can be used to develop natural herbicidal agents and manage terrestrial weeds.
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Claims 6
Claim · model-written summary
Methanol extracts of Capsosiphon fulvescens and Monostroma nitidum completely inhibited lettuce germination.
- Taxon
- L. sativa
Lactuca sativae1 - Treatment
- methanol extractse1
- Interactor
- Capsosiphon fulvescensCapsosiphon fulvescense1other
- Second interactor
- Monostroma nitidumMonostroma nitidume1other
- Outcome
- germinatione1
- Direction
- completely inhibitede1
- Qualifier
- 4 mg/filter papere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Out of nine methanol extracts, Capsosiphon fulvescens and Monostroma nitidum extracts completely inhibited germination of L. sativa at 4 mg/filter paper”
Claim · model-written summary
Water extracts of these seaweeds generally showed lower anti-germination activity than methanol extracts.
- Taxon
- Lactuca sativaLactuca sativat0
- Treatment
- Water extracts of these seaweedse2
- Outcome
- anti-germination activitiese2
- Direction
- lowe2
- Qualifier
- generallye2
- Comparator
- methanol extractse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Water extracts of these seaweeds generally showed low anti-germination activities than methanol extracts”
t0“Lactuca sativa”
Claim · model-written summary
Enteromorpha linza water extract completely inhibited lettuce germination at 16 mg per filter paper.
- Taxon
- L. sativaLactuca sativae3
- Treatment
- Enteromorpha linza extracte3
- Interactor
- Enteromorpha linza
Ulva linzae3other - Outcome
- germinatione3
- Direction
- completely inhibitede3
- Qualifier
- 16 mg/filter papere3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Enteromorpha linza extract completely inhibited L. sativa germination at 16 mg/filter paper”
Claim · model-written summary
Lipids were the main active agents against lettuce germination in Capsosiphon fulvescens extracts.
- Taxon
- L. sativaLactuca sativae4
- Compound
- lipidse4
- Outcome
- main active agentse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“the main active agents against L. sativa were determined to be lipids”
t0“Lactuca sativa”
Claim · model-written summary
Lipids at 0.5 mg per paper disc reduced lettuce germination to 0.0%.
- Taxon
- L. sativaLactuca sativae4
- Treatment
- lipidse5
- Outcome
- germinatione5
- Direction
- decreaseinferrede5
- Value
- 0.0%e5
- Qualifier
- 0.5 mg of lipids/paper disce5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“lipids (0.0% germination at 0.5 mg of lipids/paper disc)”
e4“the main active agents against L. sativa were determined to be lipids”
t0“Lactuca sativa”
Claim · model-written summary
The authors recommend using Capsosiphon fulvescens extracts to develop natural herbicidal agents and manage terrestrial weeds.
- Taxon
- Lactuca sativaLactuca sativat0
- Outcome
- natural herbicidal agentse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“extracts of C. fulvescens can be used to develop natural herbicidal agents and manage terrestrial weeds”
t0“Lactuca sativa”
The same questions in other papers
botanical · growth · Lactuca sativa (garden lettuce)Positive and negative results
113 papers in the same direction as this paper · 157 in the opposite direction
- negative
- negative
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See all 271 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.