Abstract
Dittrichia viscosa (L.) Greuter subsp. viscosa (Asteraceae) is a perennial species naturally distributed in arid and marginal areas whose agroecological cultivation could be a useful innovation to produce quality biomass to extract phenolic-rich phytochemical blends. Here, biomass-yield trends were profiled at different growth stages under direct cropping, and inflorescences, leaves, and stems were submitted to water extraction and hydrodistillation. Then, four extracts were investigated for their biological activities in invitro and in planta assays. Extracts inhibited cress (Lepidium sativum)- and radish (Raphanus sativus)-seed germination and root elongation. All samples showed dose-dependent antifungal activity in the plate experiments, inhibiting up to 65% of the growth of the fungal pathogen Alternaria alternata, a leaf-spot disease agent of baby spinach (Spinacea oleracea). However, only the extracts from dried green parts and fresh inflorescences at the highest concentration significantly reduced (54%) the extent of Alternaria necrosis on baby spinach. UHPLC-HRMS/MS analysis revealed that the main specialized metabolites of the extracts are caffeoyl quinic acids, methoxylated flavonoids, sesquiterpene compounds such as tomentosin, and dicarboxylic acids, which may explain the observed bioactivity. Plant extracts obtained through sustainable methodology can be effective in biological agricultural applications.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Extracts inhibited cress seed germination and root elongation.
Not reportedComparator
Verbatim
e0“Extracts inhibited cress (Lepidium sativum)- and radish (Raphanus sativus)-seed germination and root elongation.”
Claim · model-written summary
Extracts inhibited radish seed germination and root elongation.
- Taxon
- radish
Raphanus sativuse0 - Treatment
- Extractse0
- Outcome
- seed germination and root elongatione0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Extracts inhibited cress (Lepidium sativum)- and radish (Raphanus sativus)-seed germination and root elongation.”
Claim · model-written summary
All samples inhibited Alternaria alternata growth by up to 65% in plate experiments in a dose dependent manner.
- Taxon
- baby spinache0
- Treatment
- All samplese0
- Interactor
- Alternaria alternata
.jpg?width=60)
Alternaria alternatae0pathogen - Outcome
- growth of the fungal pathogen Alternaria alternatae0
- Direction
- inhibitinge0
- Value
- 65%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“All samples showed dose-dependent antifungal activity in the plate experiments, inhibiting up to 65% of the growth of the fungal pathogen Alternaria alternata, a leaf-spot disease agent of baby spinach (Spinacea oleracea).”
Claim · model-written summary
Dried green part extracts at the highest concentration significantly reduced Alternaria necrosis on baby spinach by 54%.
- Taxon
- baby spinache0
- Treatment
- extracts from dried green partse0
- Interactor
- Alternaria
Alternariae0pathogen - Outcome
- extent of Alternaria necrosise0
- Direction
- reducede0
- Value
- 54%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only the extracts from dried green parts and fresh inflorescences at the highest concentration significantly reduced (54%) the extent of Alternaria necrosis on baby spinach”
Claim · model-written summary
Fresh inflorescence extracts at the highest concentration significantly reduced Alternaria necrosis on baby spinach by 54%.
- Taxon
- baby spinache0
- Treatment
- extracts from dried green parts and fresh inflorescencese0
- Interactor
- AlternariaAlternariae0pathogen
- Outcome
- extent of Alternaria necrosise0
- Direction
- reducede0
- Value
- 54%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only the extracts from dried green parts and fresh inflorescences at the highest concentration significantly reduced (54%) the extent of Alternaria necrosis on baby spinach”
Claim · model-written summary
The extracts contained caffeoyl quinic acids, methoxylated flavonoids, and sesquiterpene compounds such as tomentosin.
- Taxon
- Dittrichia viscosa (L.) Greuter
Dittrichia viscosat0 - Outcome
- caffeoyl quinic acids, methoxylated flavonoids, sesquiterpene compounds such as tomentosine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the main specialized metabolites of the extracts are caffeoyl quinic acids, methoxylated flavonoids, sesquiterpene compounds such as tomentosin, and dicarboxylic acids”
t0“Dittrichia viscosa (L.) Greuter”
Claim · model-written summary
Dicarboxylic acids were among the main specialized metabolites of the extracts.
- Taxon
- Dittrichia viscosa (L.) GreuterDittrichia viscosat0
- Outcome
- dicarboxylic acidse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the main specialized metabolites of the extracts are caffeoyl quinic acids, methoxylated flavonoids, sesquiterpene compounds such as tomentosin, and dicarboxylic acids”
t0“Dittrichia viscosa (L.) Greuter”
The same questions in other papers
botanical · growth · Raphanus sativus (radish)Positive and negative results
98 papers in the same direction as this paper · 53 in the opposite direction
- positive
- positive
- positive
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.