Abstract
As climate change continues to alter rainfall patterns and precipitation regimes across the globe, waterlogging is emerging as a widespread and pressing issue that threatens agricultural productivity and food security. In this study, we investigated the potential of humic substances to mitigate waterlogging stress in cabbage (Brassica oleracea L.) seedlings. Specifically, humic acid and fulvic acid solutions were applied to the growth medium at weekly intervals both before and after a 10-day waterlogging period. The effects of humic acid and fulvic acid applications on waterlogging-induced stress were evaluated through various physiological and biochemical parameters, including shoot fresh weight, root fresh weight, shoot dry weight, root dry weight, plant height, stem diameter, chlorophyll a, chlorophyll b, total chlorophyll, proline, malondialdehyde, hydrogen peroxide, indole acetic acid, gibberellic acid, abscisic acid, and antioxidant enzyme activities including catalase, peroxidase, and superoxide dismutase. The results indicated that waterlogging stress significantly impaired plant growth parameters, but these adverse effects were mitigated by humic acid and fulvic acid applications. The humic substances contributed to stress tolerance by modulating key biochemical responses, including a shift in proline, hydrogen peroxide, malondialdehyde, abscisic acid, and antioxidant enzyme activity levels, which otherwise increased under stress conditions. Furthermore, the decline in indole acetic acid and gibberellic acid content due to waterlogging was alleviated by humic acid and fulvic acid treatments. Overall, the findings suggest that humic acid and fulvic acid can effectively reduce the detrimental effects of waterlogging stress in cabbage seedlings, demonstrating their potential as biostimulants with comparable protective effects.
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Claims 9
Claim · model-written summary
Waterlogging significantly impaired cabbage seedling growth parameters.
- Taxon
- cabbage
Brassica oleracea var. capitatat0 - Treatment
- waterlogging stresse0
- Outcome
- plant growth parameterse0
- Direction
- impairede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“waterlogging stress significantly impaired plant growth parameters”
t0“Cabbage Seedling”
Claim · model-written summary
Humic acid mitigated waterlogging damage to growth.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- humic acide0
- Outcome
- adverse effectse0
- Direction
- mitigatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these adverse effects were mitigated by humic acid and fulvic acid applications”
t0“Cabbage Seedling”
Claim · model-written summary
Fulvic acid mitigated waterlogging damage to growth.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- fulvic acide0
- Outcome
- adverse effectse0
- Direction
- mitigatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these adverse effects were mitigated by humic acid and fulvic acid applications”
t0“Cabbage Seedling”
Claim · model-written summary
Waterlogging increased proline, hydrogen peroxide and malondialdehyde levels.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- stress conditionse0
- Outcome
- proline, hydrogen peroxide, malondialdehydee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“proline, hydrogen peroxide, malondialdehyde, abscisic acid, and antioxidant enzyme activity levels, which otherwise increased under stress conditions”
t0“Cabbage Seedling”
Claim · model-written summary
Waterlogging increased abscisic acid and antioxidant enzyme activity levels.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- stress conditionse0
- Outcome
- abscisic acid, and antioxidant enzyme activity levelse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“abscisic acid, and antioxidant enzyme activity levels, which otherwise increased under stress conditions”
t0“Cabbage Seedling”
Claim · model-written summary
Humic substances shifted stress responsive biochemical levels.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- humic substancese0
- Outcome
- key biochemical responsese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The humic substances contributed to stress tolerance by modulating key biochemical responses, including a shift in proline, hydrogen peroxide, malondialdehyde, abscisic acid, and antioxidant enzyme activity levels”
t0“Cabbage Seedling”
Claim · model-written summary
Waterlogging reduced indole acetic acid and gibberellic acid content.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- waterlogginge0
- Outcome
- indole acetic acid and gibberellic acid contente0
- Direction
- declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decline in indole acetic acid and gibberellic acid content due to waterlogging”
t0“Cabbage Seedling”
Claim · model-written summary
Humic acid alleviated the decline in indole acetic acid and gibberellic acid.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- humic acide0
- Outcome
- indole acetic acid and gibberellic acid contente0
- Direction
- alleviatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decline in indole acetic acid and gibberellic acid content due to waterlogging was alleviated by humic acid and fulvic acid treatments”
t0“Cabbage Seedling”
Claim · model-written summary
Fulvic acid alleviated the decline in indole acetic acid and gibberellic acid.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- fulvic acide0
- Outcome
- indole acetic acid and gibberellic acid contente0
- Direction
- alleviatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decline in indole acetic acid and gibberellic acid content due to waterlogging was alleviated by humic acid and fulvic acid treatments”
t0“Cabbage Seedling”
The same questions in other papers
other · physiology: hormones · Brassica oleracea (wild cabbage)Results agree
1 paper in the same direction as this paper
- positive
flooding · growth · Brassica oleracea (wild cabbage)Results agree
4 papers in the same direction as this paper
- negative
- negative
- negative
1 paper more in this group
See all 5 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.