Abstract
Salicylic acid (SA) is an important signal transduction molecule that helps plants overcome external stress conditions. Drought stress can strongly impact plants during cultivation. In this study, we investigated the effects of pretreating Chinese cabbage seedlings with exogenous SA during drought stress through physiological and biochemical analyses. The study lasted for 39 days, including a period of 23-day during which Chinese cabbage seedlings were pretreated with SA. Plants were pretreated three or six times with SA (10-4 M) or left untreated (control), and subjected to a 12-day drought period. Leaf samples were harvested before (day 0) and on days 3, 6, 9, and 12 of the drought period. Malondialdehyde (MDA) content, photosynthesis rate, chlorophyll fluorescence, total chlorophyll content, and antioxidant enzyme (catalase, ascorbate peroxidase, glutathione reductase) activities were determined during the drought period. Pretreatment with SA led to enhanced drought tolerance in Chinese cabbage seedlings. Pretreating seedlings six times was found to be more efficacious than three times. SA pretreatment reduced MDA synthesis and prevented leaf rolling and leaf scorching. Additionally, SA pretreatment preserved the photosynthetic apparatus and counteracted the reduced activity of antioxidant enzymes. These results demonstrate that pretreatment with exogenous SA protects Chinese cabbage seedlings from oxidative stress and promotes their growth. We thus conclude that pretreatment with exogenous SA can enhance drought tolerance in Chinese cabbage seedlings.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc. 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 8
Claim · model-written summary
SA pretreatment enhanced drought tolerance in Chinese cabbage seedlings.
- Taxon
- Chinese Cabbage
Brassica rapa subsp. pekinensist0 - Treatment
- Pretreatment with SAe0
- Outcome
- drought tolerancee0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage (Brassica campestris L.)”
e0“Pretreatment with SA led to enhanced drought tolerance in Chinese cabbage seedlings.”
Claim · model-written summary
Six SA pretreatments were more efficacious than three.
- Taxon
- Chinese CabbageBrassica rapa subsp. pekinensist0
- Treatment
- Pretreating seedlings six timese0
- Outcome
- more efficaciouse0
- Direction
- more efficaciouse0
- Comparator
- three timese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage (Brassica campestris L.)”
e0“Pretreating seedlings six times was found to be more efficacious than three times.”
Claim · model-written summary
SA pretreatment reduced MDA synthesis.
- Taxon
- Chinese CabbageBrassica rapa subsp. pekinensist0
- Treatment
- SA pretreatmente0
- Outcome
- MDA synthesise0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage (Brassica campestris L.)”
e0“SA pretreatment reduced MDA synthesis and prevented leaf rolling and leaf scorching.”
Claim · model-written summary
SA pretreatment prevented leaf rolling and scorching.
- Taxon
- Chinese CabbageBrassica rapa subsp. pekinensist0
- Treatment
- SA pretreatmente0
- Outcome
- leaf rolling and leaf scorchinge0
- Direction
- preventede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage (Brassica campestris L.)”
e0“SA pretreatment reduced MDA synthesis and prevented leaf rolling and leaf scorching.”
Claim · model-written summary
SA pretreatment preserved the photosynthetic apparatus.
- Taxon
- Chinese CabbageBrassica rapa subsp. pekinensist0
- Treatment
- SA pretreatmente0
- Outcome
- photosynthetic apparatuse0
- Direction
- preservede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage (Brassica campestris L.)”
e0“SA pretreatment preserved the photosynthetic apparatus and counteracted the reduced activity of antioxidant enzymes.”
Claim · model-written summary
SA pretreatment counteracted reduced antioxidant enzyme activity.
- Taxon
- Chinese CabbageBrassica rapa subsp. pekinensist0
- Treatment
- SA pretreatmente0
- Outcome
- activity of antioxidant enzymese0
- Direction
- counteractede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage (Brassica campestris L.)”
e0“SA pretreatment preserved the photosynthetic apparatus and counteracted the reduced activity of antioxidant enzymes.”
Claim · model-written summary
The authors conclude that SA pretreatment protects seedlings from oxidative stress.
- Taxon
- Chinese CabbageBrassica rapa subsp. pekinensist0
- Treatment
- pretreatment with exogenous SAe0
- Outcome
- oxidative stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage (Brassica campestris L.)”
e0“pretreatment with exogenous SA protects Chinese cabbage seedlings from oxidative stress and promotes their growth.”
Claim · model-written summary
The authors conclude that SA pretreatment promotes seedling growth.
- Taxon
- Chinese CabbageBrassica rapa subsp. pekinensist0
- Treatment
- pretreatment with exogenous SAe0
- Outcome
- growthe0
- Direction
- promotese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage (Brassica campestris L.)”
e0“pretreatment with exogenous SA protects Chinese cabbage seedlings from oxidative stress and promotes their growth.”
The same questions in other papers
salicylic acid · physiology: antioxidant enzymes · Brassica rapa (field mustard)Results differ
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →salicylic acid · physiology: photosynthesis · Brassica rapa (field mustard)Results agree
2 papers in the same direction as this paper
- positive
- positive
salicylic acid · physiology: oxidative · Brassica rapa (field mustard)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →salicylic acid · growth · Brassica rapa (field mustard)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 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.