Abstract
Aluminum toxicity leads to oxidative stress and genetic instability in organisms, impairing growth and cellular function. This study investigated the protective potential of an aqueous extract obtained from the lichen species Ramalina pollinaria against aluminum-induced toxicity in Allium cepa , a widely used biological indicator in environmental monitoring. Onion bulbs were treated with aluminum chloride (50 mg L −1 ), two concentrations (0.5 g L −1 and 1.0 g L −1 ) of lichen extract and lichen extracts together with aluminum chloride. Physiological, cytogenetic, biochemical, and anatomical responses were evaluated following exposure. Aluminum exposure significantly reduced germination, root elongation, and weight gain, while increasing lipid peroxidation, proline accumulation, antioxidant enzyme activities, chromosomal abnormalities, and DNA fragmentation. Co-application of the lichen extract alleviated these effects in a dose-dependent manner. Higher concentrations of the extract led to greater improvements in growth, restoration of mitotic activity, stabilization of chlorophyll levels, and reduction in cellular and genetic damage. Cross-sectional analysis of root meristems confirmed a reduction in tissue injury when the extract was administered. Chemical analysis of the extract revealed a phenolic-rich composition, with compounds likely contributing to its antioxidant and protective efficacy. The findings suggest that R. pollinaria extract may mitigate aluminum toxicity in plants and could have potential applications in environmental protection and phytoremediation, although further studies are required.
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Claims 8
Claim · model-written summary
Aluminum exposure significantly reduced germination, root elongation and weight gain in Allium cepa.
- Taxon
- Allium cepa
Allium cepat0 - Treatment
- Aluminum exposuree0
- Outcome
- germination, root elongation, and weight gaine0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aluminum exposure significantly reduced germination, root elongation, and weight gain”
t0“Allium cepa L.”
Claim · model-written summary
Aluminum exposure significantly increased lipid peroxidation, proline accumulation and antioxidant enzyme activities in Allium cepa.
- Taxon
- Allium cepaAllium cepat0
- Treatment
- Aluminum exposuree0
- Outcome
- lipid peroxidation, proline accumulation, antioxidant enzyme activitiese0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aluminum exposure significantly reduced germination, root elongation, and weight gain, while increasing lipid peroxidation, proline accumulation, antioxidant enzyme activities, chromosomal abnormalities, and DNA fragmentation”
t0“Allium cepa L.”
Claim · model-written summary
Aluminum exposure significantly increased chromosomal abnormalities and DNA fragmentation in Allium cepa.
- Taxon
- Allium cepaAllium cepat0
- Treatment
- Aluminum exposuree0
- Outcome
- chromosomal abnormalities, and DNA fragmentatione0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aluminum exposure significantly reduced germination, root elongation, and weight gain, while increasing lipid peroxidation, proline accumulation, antioxidant enzyme activities, chromosomal abnormalities, and DNA fragmentation”
t0“Allium cepa L.”
Claim · model-written summary
Co-application of the lichen extract alleviated the aluminum-induced effects in Allium cepa in a dose-dependent manner.
- Taxon
- Allium cepaAllium cepat0
- Treatment
- Co-application of the lichen extracte0
- Outcome
- these effectse0
- Direction
- alleviatede0
- Qualifier
- dose-dependent mannere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Co-application of the lichen extract alleviated these effects in a dose-dependent manner”
t0“Allium cepa L.”
Claim · model-written summary
Higher concentrations of the lichen extract led to greater improvements in growth, restoration of mitotic activity and stabilization of chlorophyll levels in aluminum-exposed Allium cepa.
- Taxon
- Allium cepaAllium cepat0
- Treatment
- Higher concentrations of the extracte0
- Outcome
- growth, restoration of mitotic activity, stabilization of chlorophyll levelse0
- Direction
- greater improvementse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher concentrations of the extract led to greater improvements in growth, restoration of mitotic activity, stabilization of chlorophyll levels, and reduction in cellular and genetic damage”
t0“Allium cepa L.”
Claim · model-written summary
Higher concentrations of the lichen extract led to greater reduction in cellular and genetic damage in aluminum-exposed Allium cepa.
- Taxon
- Allium cepaAllium cepat0
- Treatment
- Higher concentrations of the extracte0
- Outcome
- cellular and genetic damagee0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher concentrations of the extract led to greater improvements in growth, restoration of mitotic activity, stabilization of chlorophyll levels, and reduction in cellular and genetic damage”
t0“Allium cepa L.”
Claim · model-written summary
Cross-sectional analysis of root meristems showed reduced tissue injury when the extract was administered.
- Taxon
- Allium cepaAllium cepat0
- Organ / stage
- root meristemse0
- Treatment
- the extract was administerede0
- Outcome
- tissue injurye0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cross-sectional analysis of root meristems confirmed a reduction in tissue injury when the extract was administered”
t0“Allium cepa L.”
Claim · model-written summary
Chemical analysis of the Ramalina pollinaria extract revealed a phenolic-rich composition.
- Taxon
- Ramalina pollinaria
Ramalina pollinariat0 - Outcome
- phenolic-rich compositione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chemical analysis of the extract revealed a phenolic-rich composition”
t0“Ramalina pollinaria (Westr.) Ach.”
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See all 8 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.