Abstract
【Objective】Watermelon production is affected by wilt disease caused by Fusarium oxysporum f.sp. niveum (FON) in heavily infected continuously cultivated soil. 【Method】The impact of fusaric acid (FA), extracted from FON, on the transmembrane potential of roots cell and some anti-stress enzymes of leaf cells of watermelon seedlings was investigated. 【Result】 Results revealed that the potential at the highest concentration of FA in 12 h was decreased by 61.9%-81.8% compared with untreated controls. The dehydrogenase activity of root cells treated with different concentrations of FA in 24 h was reduced by 35.9%-90.9%. FA markedly accelerated the lipid peroxidase activity (LPO) of watermelon leaves. Malondiadehyde (MDA) in leaves in 24 h treated with different concentrations of FA was 5.2-11.0-fold as much as control. Phenylalanine ammonia-lyase activity (PAL) in leaves treated with FA was firstly increased and then decreased. The highest PAL activity was obtained after 6-12 h, which was 7.2-10.5-fold as much as control. Activities of catalase (CAT), superoxide dismutase (SOD), and peroxide (POD) were firstly increased and then decreased when the seedlings were treated with FA. Activity of CAT reached a peak 3 h after treatment with FA, but decreased after a further 3 h, declined by 18.6%-52.5%. The highest SOD and POD activities were observed after 12 h and thenboth declined. The β-1,3-glucanase and chitinase activities in leaves treated with FA were firstly quickly increased and then declined, the highest activities were found after 12 h and 3 h, which were around 10-and 15-30-fold as much as untreated controls, respectively. 【Conclusion】 It is concluded that FA strongly inhibits root and leaf cells functions. FA destructs the leaf cell defense system of the watermelon seedlings and damages water uptake and transportation functions of root so that LPO is markedly stimulated to produce much more MDA, indicating severe injury of cell structure, thus leading to final disease and even cell death in response to the watermelon fusarium wilt.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 11
Claim · model-written summary
At the highest fusaric acid concentration, root cell potential decreased by 61.9%-81.8% in 12 h.
- Taxon
- watermelon seedlings
Citrullus lanatuse2 - Treatment
- fusaric acid (FA)e1
- Outcome
- potentiale0
- Direction
- decreasede0
- Value
- 61.9%-81.8%e0
- Comparator
- untreated controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potential at the highest concentration of FA in 12 h was decreased by 61.9%-81.8% compared with untreated controls”
e1“fusaric acid (FA)”
e2“leaf cells of watermelon seedlings was investigated”
Claim · model-written summary
Fusaric acid reduced root cell dehydrogenase activity by 35.9%-90.9% in 24 h.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Treatment
- FAe0
- Outcome
- dehydrogenase activity of root cellse0
- Direction
- reducede0
- Value
- 35.9%-90.9%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dehydrogenase activity of root cells treated with different concentrations of FA in 24 h was reduced by 35.9%-90.9%”
e1“leaf cells of watermelon seedlings was investigated”
Claim · model-written summary
Fusaric acid markedly accelerated leaf lipid peroxidase activity.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- FAe0
- Outcome
- lipid peroxidase activity (LPO)e0
- Direction
- acceleratede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“FA markedly accelerated the lipid peroxidase activity (LPO) of watermelon leaves”
Claim · model-written summary
Leaf malondialdehyde was 5.2-11.0-fold control after 24 h of fusaric acid.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Treatment
- FAe0
- Outcome
- Malondiadehyde (MDA) in leavese0
- Direction
- as much ase0
- Value
- 5.2-11.0-folde0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Malondiadehyde (MDA) in leaves in 24 h treated with different concentrations of FA was 5.2-11.0-fold as much as control”
e1“leaf cells of watermelon seedlings was investigated”
Claim · model-written summary
Leaf PAL activity first rose and then fell after fusaric acid; its 6-12 h maximum was 7.2-10.5-fold control.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Treatment
- FAe0
- Outcome
- Phenylalanine ammonia-lyase activity (PAL)e0
- Direction
- firstly increased and then decreasede0
- Value
- 7.2-10.5-folde0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phenylalanine ammonia-lyase activity (PAL) in leaves treated with FA was firstly increased and then decreased. The highest PAL activity was obtained after 6-12 h, which was 7.2-10.5-fold as much as control”
e1“leaf cells of watermelon seedlings was investigated”
Claim · model-written summary
Catalase activity peaked at 3 h and subsequently declined by 18.6%-52.5%.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Treatment
- FAe0
- Outcome
- Activity of CATe0
- Direction
- decreasede0
- Value
- 18.6%-52.5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Activity of CAT reached a peak 3 h after treatment with FA, but decreased after a further 3 h, declined by 18.6%-52.5%”
e1“leaf cells of watermelon seedlings was investigated”
Claim · model-written summary
SOD activity peaked at 12 h after fusaric acid and then declined.
- Taxon
- watermelon seedlingsCitrullus lanatuse2
- Treatment
- FAe1
- Outcome
- SODe0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest SOD and POD activities were observed after 12 h and thenboth declined”
e1“after treatment with FA”
e2“leaf cells of watermelon seedlings was investigated”
Claim · model-written summary
POD activity peaked at 12 h after fusaric acid and then declined.
- Taxon
- watermelon seedlingsCitrullus lanatuse2
- Treatment
- FAe1
- Outcome
- PODe0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest SOD and POD activities were observed after 12 h and thenboth declined”
e1“after treatment with FA”
e2“leaf cells of watermelon seedlings was investigated”
Claim · model-written summary
β-1,3-glucanase activity rose quickly then fell, with a maximum around 10-fold control after 12 h.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Treatment
- FAe0
- Outcome
- β-1,3-glucanasee0
- Direction
- firstly quickly increased and then declinede0
- Value
- 10-e0
- Comparator
- untreated controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“β-1,3-glucanase and chitinase activities in leaves treated with FA were firstly quickly increased and then declined, the highest activities were found after 12 h and 3 h, which were around 10-and 15-30-fold as much as untreated controls, respectively”
e1“leaf cells of watermelon seedlings was investigated”
Claim · model-written summary
Chitinase activity rose quickly then fell, with a maximum 15-30-fold control after 3 h.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Treatment
- FAe0
- Outcome
- chitinase activitiese0
- Direction
- firstly quickly increased and then declinede0
- Value
- 15-30-folde0
- Comparator
- untreated controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“β-1,3-glucanase and chitinase activities in leaves treated with FA were firstly quickly increased and then declined, the highest activities were found after 12 h and 3 h, which were around 10-and 15-30-fold as much as untreated controls, respectively”
e1“leaf cells of watermelon seedlings was investigated”
Claim · model-written summary
The authors conclude that fusaric acid damages leaf defense and root water uptake and transport, contributing to cell injury and wilt.
- Taxon
- watermelon seedlingsCitrullus lanatuse0
- Treatment
- FAe0
- Outcome
- severe injury of cell structuree0
- Qualifier
- damages water uptake and transportation functions of roote0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“FA destructs the leaf cell defense system of the watermelon seedlings and damages water uptake and transportation functions of root so that LPO is markedly stimulated to produce much more MDA, indicating severe injury of cell structure, thus leading to final disease and even cell death in response to the watermelon fusarium wilt”
The same questions in other papers
Fusaric acid · physiology: oxidative · Citrullus lanatus (watermelon)Results agree
1 paper in the same direction as this paper
- negative
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.