Abstract
In order to clarify the effects of drought stress training on the quality and drought resistance of Codonopsis pilosula, this study used PEG to simulate drought stress and employed potting with water control for the drought stress training of C. pilosula plants. The polysaccharide content, secondary metabolites, antioxidant system, and photosynthetic pigment system of C. pilosula after drought stress training were analyzed. The results showed that the content of fructans in the root of C. pilosula increased after two rounds of drought stress treatment, and it was significantly higher than that of the control group. The accumulation of fructans in the root of C. pilosula showed an upward trend during the rehydration treatment. The content of lobetyolin and tangshenoside Ⅰ increased after drought stress treatment compared with that of the control group. The rehydration treatment caused first increasing and then decreasing in the content of lobetyolin, while it had no significant effect on the tangshenoside Ⅰcontent. The content of photosynthetic pigments decreased after drought stress treatment, and it gradually increased during the first round of rehydration and the second round of rehydration. Moreover, the increase was faster in the second round of rehydration than in the first round of rehydration. The content of the peroxidation product malondialdehyde(MDA) and the activities of superoxide dismutase(SOD), peroxidase(POD), and catalase(CAT) increased after drought stress treatment compared with those of the control group, and they showed a tendency of decreasing during rehydration. Moreover, the decrease was faster in the second round of rehydration than in the first round of rehydration. When the plants of C. pilosula after drought stress training were again subjected to severe drought stress, the wilting rate decreased significantly, and the biomass increases significantly. This study showed that the drought stress training could promote the accumulation of polysaccharides and secondary metabolites in the root of C. pilosula. When encountering drought stress again, C. pilosula plants could quickly regulate the antioxidant system and delay the decomposition of chlorophyll to respond to drought stress. The findings provide a theoretical basis for the ecological cultivation of C. pilosula in arid and semi-arid areas.
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Claims 15
Claim · model-written summary
Two rounds of drought stress significantly increased root fructans relative to controls.
- Taxon
- Codonopsis pilosula
Codonopsis pilosulat0 - Organ / stage
- roote0
- Treatment
- two rounds of drought stress treatmente0
- Outcome
- content of fructanse0
- Direction
- increasede0
- Comparator
- control groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the content of fructans in the root of C. pilosula increased after two rounds of drought stress treatment, and it was significantly higher than that of the control group.”
t0“Codonopsis pilosula”
Claim · model-written summary
Root fructans trended upward during rehydration.
- Taxon
- Codonopsis pilosulaCodonopsis pilosulat0
- Organ / stage
- roote0
- Treatment
- rehydration treatmente0
- Outcome
- accumulation of fructanse0
- Direction
- upward trende0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The accumulation of fructans in the root of C. pilosula showed an upward trend during the rehydration treatment.”
t0“Codonopsis pilosula”
Claim · model-written summary
Drought stress increased lobetyolin content relative to controls.
- Taxon
- Codonopsis pilosulaCodonopsis pilosulat0
- Treatment
- drought stress treatmente0
- Outcome
- content of lobetyoline0
- Direction
- increasede0
- Comparator
- control groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of lobetyolin and tangshenoside Ⅰ increased after drought stress treatment compared with that of the control group.”
t0“Codonopsis pilosula”
Claim · model-written summary
Drought stress increased tangshenoside Ⅰ content relative to controls.
- Taxon
- Codonopsis pilosulaCodonopsis pilosulat0
- Treatment
- drought stress treatmente0
- Outcome
- tangshenoside Ⅰe0
- Direction
- increasede0
- Comparator
- control groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of lobetyolin and tangshenoside Ⅰ increased after drought stress treatment compared with that of the control group.”
t0“Codonopsis pilosula”
Claim · model-written summary
Rehydration first increased and then decreased lobetyolin content.
- Taxon
- Codonopsis pilosulaCodonopsis pilosulat0
- Treatment
- rehydration treatmente0
- Outcome
- content of lobetyoline0
- Direction
- first increasing and then decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rehydration treatment caused first increasing and then decreasing in the content of lobetyolin”
t0“Codonopsis pilosula”
Claim · model-written summary
Rehydration had no significant effect on tangshenoside Ⅰ content.
- Taxon
- Codonopsis pilosulaCodonopsis pilosulat0
- Treatment
- rehydration treatmente0
- Outcome
- tangshenoside Ⅰcontente0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rehydration treatment caused first increasing and then decreasing in the content of lobetyolin, while it had no significant effect on the tangshenoside Ⅰcontent.”
t0“Codonopsis pilosula”
Claim · model-written summary
Drought stress decreased photosynthetic pigment content.
- Taxon
- Codonopsis pilosulaCodonopsis pilosulat0
- Treatment
- drought stress treatmente0
- Outcome
- content of photosynthetic pigmentse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of photosynthetic pigments decreased after drought stress treatment”
t0“Codonopsis pilosula”
Claim · model-written summary
Photosynthetic pigments gradually increased during both rehydration rounds.
- Taxon
- Codonopsis pilosulaCodonopsis pilosulat0
- Treatment
- first round of rehydration and the second round of rehydratione0
- Outcome
- photosynthetic pigmentse0
- Direction
- gradually increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of photosynthetic pigments decreased after drought stress treatment, and it gradually increased during the first round of rehydration and the second round of rehydration.”
t0“Codonopsis pilosula”
Claim · model-written summary
Photosynthetic pigment recovery was faster in the second rehydration round.
- Taxon
- Codonopsis pilosulaCodonopsis pilosulat0
- Treatment
- second round of rehydratione0
- Outcome
- increasee0
- Direction
- fastere0
- Comparator
- first round of rehydratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase was faster in the second round of rehydration than in the first round of rehydration.”
t0“Codonopsis pilosula”
Claim · model-written summary
Drought stress increased malondialdehyde content relative to controls.
- Taxon
- Codonopsis pilosulaCodonopsis pilosulat0
- Treatment
- drought stress treatmente0
- Outcome
- content of the peroxidation product malondialdehyde(MDA)e0
- Direction
- increasede0
- Comparator
- control groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of the peroxidation product malondialdehyde(MDA) and the activities of superoxide dismutase(SOD), peroxidase(POD), and catalase(CAT) increased after drought stress treatment compared with those of the control group”
t0“Codonopsis pilosula”
Claim · model-written summary
Drought stress increased superoxide dismutase, peroxidase and catalase activities relative to controls.
- Taxon
- Codonopsis pilosulaCodonopsis pilosulat0
- Treatment
- drought stress treatmente0
- Outcome
- activities of superoxide dismutase(SOD), peroxidase(POD), and catalase(CAT)e0
- Direction
- increasede0
- Comparator
- control groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of the peroxidation product malondialdehyde(MDA) and the activities of superoxide dismutase(SOD), peroxidase(POD), and catalase(CAT) increased after drought stress treatment compared with those of the control group”
t0“Codonopsis pilosula”
Claim · model-written summary
Malondialdehyde and antioxidant enzyme activities tended to decrease during rehydration.
- Taxon
- Codonopsis pilosulaCodonopsis pilosulat0
- Treatment
- rehydratione0
- Outcome
- malondialdehyde(MDA) and the activities of superoxide dismutase(SOD), peroxidase(POD), and catalase(CAT)e0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of the peroxidation product malondialdehyde(MDA) and the activities of superoxide dismutase(SOD), peroxidase(POD), and catalase(CAT) increased after drought stress treatment compared with those of the control group, and they showed a tendency of decreasing during rehydration.”
t0“Codonopsis pilosula”
Claim · model-written summary
The decrease in malondialdehyde and antioxidant enzyme activities was faster in the second rehydration round.
- Taxon
- Codonopsis pilosulaCodonopsis pilosulat0
- Treatment
- second round of rehydratione0
- Outcome
- decreasee0
- Direction
- fastere0
- Comparator
- first round of rehydratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decrease was faster in the second round of rehydration than in the first round of rehydration.”
t0“Codonopsis pilosula”
Claim · model-written summary
Drought-trained plants had a significantly lower wilting rate on renewed severe drought.
- Taxon
- Codonopsis pilosulaCodonopsis pilosulat0
- Treatment
- drought stress traininge0
- Outcome
- wilting ratee0
- Direction
- decreasede0
- Qualifier
- severe drought stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the plants of C. pilosula after drought stress training were again subjected to severe drought stress, the wilting rate decreased significantly”
t0“Codonopsis pilosula”
Claim · model-written summary
Drought-trained plants had significantly higher biomass on renewed severe drought.
- Taxon
- Codonopsis pilosulaCodonopsis pilosulat0
- Treatment
- drought stress traininge0
- Outcome
- biomasse0
- Direction
- increasese0
- Qualifier
- severe drought stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the plants of C. pilosula after drought stress training were again subjected to severe drought stress, the wilting rate decreased significantly, and the biomass increases significantly.”
t0“Codonopsis pilosula”
The same questions in other papers
drought · physiology: photosynthesis · Codonopsis pilosulaPositive and negative results
1 in the opposite direction
- positive
drought · growth · Codonopsis pilosulaPositive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
drought · molecular: metabolites · Codonopsis pilosulaResults agree
1 paper in the same direction as this paper
- positive
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.