Abstract
The development of agroecology has promoted the discovery of new bioactive compounds that might act as biocides to control infections and microbial contamination. Algae belonging to Lyngbya genus produce several allelochemicals, which are compounds with crop protection potential. The present study aimed to examine primary and secondary compounds derived from Lyngbya sp. extracts (aqueous and hydroethanolic) on phytotoxic, cytogenotoxic, and insecticidal activities. Determination of compounds indicated the presence predominantly of proteins and flavonoids. The extracts presented physicochemical characteristics that produced (1) 89% germination inhibition using hydroethanolic extract and (2) diminished development of seedlings of L. sativa by hydroethanolic extract as evidenced by reduced radicles length in 83.54%. Aqueous and hydroethanolic Lyngbya sp. extracts significantly interfered with meristematic cells of A. cepa, as evidenced by chromosomal alterations and aberrant mitotic phases in cells. Extracts also exhibited pro-oxidative activity and a potent insecticidal potential on S. zeamais, indicating that the hydroethanolic extract produced 100% insect mortality at 75 mg/ml after 48 hr while the aqueous extract initiated 90% mortality at the same concentration after 82 hr. Therefore, data demonstrate that Lyngbya genus provides basic information for new environmental and ecotoxicological studies to seek a possible source of proteins and flavonoids to be used in agroecological management.
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Claims 9
Claim · model-written summary
Lyngbya extracts contained predominantly proteins and flavonoids.
- Outcome
- presence predominantly of proteins and flavonoidse0
LyngbyaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Determination of compounds indicated the presence predominantly of proteins and flavonoids.”
e1“Lyngbya sp. extracts (aqueous and hydroethanolic)”
Claim · model-written summary
Hydroethanolic extract inhibited germination by 89%.
- Taxon
- L. sativae1
- Treatment
- hydroethanolic extracte0
- Outcome
- germinatione0
- Direction
- inhibitione0
- Value
- 89%e0
Not reportedComparator
Verbatim
e0“89% germination inhibition using hydroethanolic extract”
e1“diminished development of seedlings of L. sativa by hydroethanolic extract”
Claim · model-written summary
Hydroethanolic extract reduced L. sativa seedling radicle length by 83.54%.
- Taxon
- L. sativae0
- Organ / stage
- seedlingse0
- Treatment
- hydroethanolic extracte0
- Outcome
- radicles lengthe0
- Direction
- reducede0
- Value
- 83.54%e0
Not reportedComparator
Verbatim
e0“diminished development of seedlings of L. sativa by hydroethanolic extract as evidenced by reduced radicles length in 83.54%.”
Claim · model-written summary
Aqueous Lyngbya extract significantly interfered with A. cepa meristematic cells, producing chromosomal alterations and aberrant mitotic phases.
- Taxon
- A. cepae0
- Organ / stage
- meristematic cellse0
- Treatment
- Aqueouse0
- Outcome
- chromosomal alterations and aberrant mitotic phasese0
Not reportedComparatorDirection
Verbatim
e0“Aqueous and hydroethanolic Lyngbya sp. extracts significantly interfered with meristematic cells of A. cepa, as evidenced by chromosomal alterations and aberrant mitotic phases in cells.”
Claim · model-written summary
Hydroethanolic Lyngbya extract significantly interfered with A. cepa meristematic cells, producing chromosomal alterations and aberrant mitotic phases.
- Taxon
- A. cepae0
- Organ / stage
- meristematic cellse0
- Treatment
- hydroethanolic Lyngbya sp. extractse0
- Outcome
- chromosomal alterations and aberrant mitotic phasese0
Not reportedComparatorDirection
Verbatim
e0“Aqueous and hydroethanolic Lyngbya sp. extracts significantly interfered with meristematic cells of A. cepa, as evidenced by chromosomal alterations and aberrant mitotic phases in cells.”
Claim · model-written summary
The extracts exhibited pro-oxidative activity.
- Outcome
- pro-oxidative activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Extracts also exhibited pro-oxidative activity”
e1“Lyngbya sp. extracts (aqueous and hydroethanolic)”
Claim · model-written summary
Hydroethanolic extract produced 100% S. zeamais mortality at 75 mg/ml after 48 hr.
- Taxon
- S. zeamaise0
- Treatment
- hydroethanolic extracte0
- Outcome
- insect mortalitye0
- Value
- 100%e0
- Qualifier
- at 75 mg/ml after 48 hre0
Not reportedComparatorDirection
Verbatim
e0“a potent insecticidal potential on S. zeamais, indicating that the hydroethanolic extract produced 100% insect mortality at 75 mg/ml after 48 hr”
Claim · model-written summary
Aqueous extract initiated 90% S. zeamais mortality at the same concentration after 82 hr.
- Taxon
- S. zeamaise1
- Treatment
- aqueous extracte0
- Outcome
- mortalitye0
- Value
- 90%e0
- Qualifier
- at the same concentration after 82 hre0
Not reportedComparatorDirection
Verbatim
e0“the aqueous extract initiated 90% mortality at the same concentration after 82 hr.”
e1“a potent insecticidal potential on S. zeamais”
Claim · model-written summary
Lyngbya is a possible source of proteins and flavonoids for agroecological management and further environmental and ecotoxicological studies.
- Outcome
- new environmental and ecotoxicological studiese0
- Qualifier
- possible source of proteins and flavonoidse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lyngbya genus provides basic information for new environmental and ecotoxicological studies to seek a possible source of proteins and flavonoids to be used in agroecological management.”
The same questions in other papers
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See all 13 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.