Abstract
Salinity is one of the most important abiotic stress factors that negatively affect plant growth and development. In contrast, fusaric acid (FA), a mycotoxin produced by Fusarium and Giberella fungal genera, has biological and metabolic effects in various plants. In this study, it was aimed to investigate the protective effect of externally applied FA (0.1 nM) against the damage caused by salt (0.15 M NaCl) stress in onion (Allium cepa L.) plant. Salt stress resulted in an increase in the chromosomal aberrations (CAs) and micronucleus (MN) frequency, a decrease in the mitotic index (MI), fresh weight, root number, germination percentage, and root length. It promoted CAs such as irregular mitosis, bilobulated nuclei, chromosome loss, bridge, unequal seperation of chromosome, vagrant chromosome and polar slip in root meristem cells. In addition, salt stress caused a enhancement in free proline (PR), catalase (CAT), superoxide dismutase (SOD) and malondialdehyde (MDA) contents in the roots of onion plant. Moreover, it revealed damage and changes that include the accumulation of some chemical substances such as proline and sugars in epidermis and cortex layer cells, epidermal cell injury, flattening of the cell nucleus, wall thickening in cortex cells, necrotic areas and indistinct transmission tissue in the anatomical structure of onion roots. On the other hand, FA application promoted bulb germination and mitotic activity, strengthened the antioxidant defense system, and reduced chromosome and anatomical structure damages. In conclusion; it has been revealed that exogenous FA application may have a positive effect on increasing the resistance of onion plants to salt stress.
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Claims 8
Claim · model-written summary
Salt increased chromosomal aberrations and micronucleus frequency.
- Taxon
- Allium cepa L.
Allium cepat0 - Treatment
- Salt stresse0
- Outcome
- chromosomal aberrations (CAs) and micronucleus (MN) frequencye0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress resulted in an increase in the chromosomal aberrations (CAs) and micronucleus (MN) frequency”
t0“Allium cepa L.”
Claim · model-written summary
Salt decreased mitotic index, fresh weight, root number, germination percentage and root length.
- Taxon
- Allium cepa L.Allium cepat0
- Treatment
- Salt stresse1
- Outcome
- mitotic index (MI), fresh weight, root number, germination percentage, and root lengthe0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a decrease in the mitotic index (MI), fresh weight, root number, germination percentage, and root length”
t0“Allium cepa L.”
e1“Salt stress resulted in an increase”
Claim · model-written summary
Salt promoted chromosomal abnormalities in root meristem cells.
- Taxon
- Allium cepa L.Allium cepat0
- Organ / stage
- root meristem cellse0
- Treatment
- Salt stresse1
- Outcome
- irregular mitosis, bilobulated nuclei, chromosome loss, bridge, unequal seperation of chromosome, vagrant chromosome and polar slipe0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It promoted CAs such as irregular mitosis, bilobulated nuclei, chromosome loss, bridge, unequal seperation of chromosome, vagrant chromosome and polar slip in root meristem cells”
e1“Salt stress resulted in an increase”
t0“Allium cepa L.”
Claim · model-written summary
Salt increased proline, CAT, SOD and MDA in onion roots.
- Taxon
- onionAllium cepae0
- Organ / stage
- rootse0
- Treatment
- salt stresse0
- Outcome
- free proline (PR), catalase (CAT), superoxide dismutase (SOD) and malondialdehyde (MDA) contentse0
- Direction
- enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt stress caused a enhancement in free proline (PR), catalase (CAT), superoxide dismutase (SOD) and malondialdehyde (MDA) contents in the roots of onion plant”
Claim · model-written summary
Salt damaged onion root anatomy and altered cells and chemical accumulation.
- Taxon
- Allium cepa L.Allium cepat0
- Organ / stage
- onion rootse0
- Treatment
- salt stresse1
- Outcome
- damage and changese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it revealed damage and changes that include the accumulation of some chemical substances such as proline and sugars in epidermis and cortex layer cells, epidermal cell injury, flattening of the cell nucleus, wall thickening in cortex cells, necrotic areas and indistinct transmission tissue in the anatomical structure of onion roots”
e1“salt stress caused a enhancement”
t0“Allium cepa L.”
Claim · model-written summary
Fusaric acid promoted bulb germination and mitotic activity.
- Taxon
- onionAllium cepae1
- Treatment
- FA applicatione0
- Outcome
- bulb germination and mitotic activitye0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“FA application promoted bulb germination and mitotic activity”
e1“externally applied FA (0.1 nM) against the damage caused by salt (0.15 M NaCl) stress in onion (Allium cepa L.)”
Claim · model-written summary
Fusaric acid strengthened antioxidant defense.
- Taxon
- Allium cepa L.Allium cepat0
- Treatment
- FA applicatione1
- Outcome
- antioxidant defense systeme0
- Direction
- strengthenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strengthened the antioxidant defense system”
e1“FA application promoted bulb germination”
t0“Allium cepa L.”
Claim · model-written summary
Fusaric acid reduced chromosomal and anatomical damage.
- Taxon
- Allium cepa L.Allium cepat0
- Treatment
- FA applicatione1
- Outcome
- chromosome and anatomical structure damagese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced chromosome and anatomical structure damages”
e1“FA application promoted bulb germination”
t0“Allium cepa L.”
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See all 16 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.