Abstract
Abstract The chilling tolerance of cucumber seedling radicles was influenced by their relative levels of vigour. Radicles of high‐vigour seedlings grew to 20 mm in length in 36 h at 25 °C, whereas it took 60 h for low‐vigour seedling radicles to reach that length. Chilling at 2·5 °C for 48 h inhibited the subsequent growth of high‐ and low‐vigour seedlings by 39 and 68%, respectively. The 2,3,5‐triphenyltetrazolium chloride (TTC) viability index, and α , α ‐diphenyl‐ β ‐picrylhydrazyl (DPPH)‐radical scavenging activity were higher in high than low‐vigour radicles. Higher ascorbate peroxidase (APX) and catalase (CAT) enzyme activity, DPPH‐radical scavenging activity, and recovery of CAT activity after chilling in high‐vigour radicles corresponded with their higher level of chilling tolerance in comparison with low‐vigour radicles. In contrast, elevated levels of superoxide dismutase, glutathione reductase and guaiacol peroxidase appear to be correlated with chilling injury since they only showed substantial increases in activity in the more chilling‐sensitive low‐vigour radicles after chilling. Manipulation of APX, CAT, and/or DPPH activity could produce plants with superior and persistent chilling tolerance.
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 8
Claim · model-written summary
High-vigour cucumber radicles reached 20 mm in 36 h at 25 °C.
- Taxon
- cucumber
Cucumis sativuse1 - Material
- high‐vigour seedlingse0
- Outcome
- Radiclese0
- Value
- 20 mme0
- Setting
- 25 °Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Radicles of high‐vigour seedlings grew to 20 mm in length in 36 h at 25 °C”
e1“cucumber”
Claim · model-written summary
Low-vigour radicles required 60 h to reach the same length.
- Taxon
- cucumberCucumis sativuse1
- Material
- low‐vigour seedlinge0
- Outcome
- radiclese0
- Value
- 60 he0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it took 60 h for low‐vigour seedling radicles to reach that length”
e1“cucumber”
Claim · model-written summary
Chilling inhibited subsequent growth of high-vigour seedlings by 39%.
- Taxon
- cucumberCucumis sativuse1
- Material
- high‐e0
- Treatment
- Chilling at 2·5 °C for 48 he0
- Outcome
- subsequent growthe0
- Direction
- inhibitede0
- Value
- 39e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chilling at 2·5 °C for 48 h inhibited the subsequent growth of high‐ and low‐vigour seedlings by 39 and 68%, respectively.”
e1“cucumber”
Claim · model-written summary
Chilling inhibited subsequent growth of low-vigour seedlings by 68%.
- Taxon
- cucumberCucumis sativuse1
- Material
- low‐vigour seedlingse0
- Treatment
- Chilling at 2·5 °C for 48 he0
- Outcome
- subsequent growthe0
- Direction
- inhibitede0
- Value
- 68%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chilling at 2·5 °C for 48 h inhibited the subsequent growth of high‐ and low‐vigour seedlings by 39 and 68%, respectively.”
e1“cucumber”
Claim · model-written summary
TTC viability and DPPH scavenging activity were higher in high-vigour radicles.
- Taxon
- cucumberCucumis sativuse1
- Outcome
- viability index, and α , α ‐diphenyl‐ β ‐picrylhydrazyl (DPPH)‐radical scavenging activitye0
- Direction
- highere0
- Comparator
- low‐vigour radiclese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 2,3,5‐triphenyltetrazolium chloride (TTC) viability index, and α , α ‐diphenyl‐ β ‐picrylhydrazyl (DPPH)‐radical scavenging activity were higher in high than low‐vigour radicles.”
e1“cucumber”
Claim · model-written summary
Higher APX and CAT activities and DPPH activity corresponded with higher chilling tolerance in high-vigour radicles.
- Taxon
- cucumberCucumis sativuse1
- Gene
- ascorbate peroxidase (APX) and catalase (CAT)e0
- Outcome
- chilling tolerancee0
- Direction
- highere0
- Comparator
- low‐vigour radiclese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher ascorbate peroxidase (APX) and catalase (CAT) enzyme activity, DPPH‐radical scavenging activity, and recovery of CAT activity after chilling in high‐vigour radicles corresponded with their higher level of chilling tolerance in comparison with low‐vigour radicles.”
e1“cucumber”
Claim · model-written summary
SOD, glutathione reductase, and guaiacol peroxidase activity increased in chilled low-vigour radicles and appeared correlated with injury.
- Taxon
- cucumberCucumis sativuse1
- Material
- low‐vigour radiclese0
- Gene
- superoxide dismutase, glutathione reductase and guaiacol peroxidasee0
- Outcome
- chilling injurye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“elevated levels of superoxide dismutase, glutathione reductase and guaiacol peroxidase appear to be correlated with chilling injury since they only showed substantial increases in activity in the more chilling‐sensitive low‐vigour radicles after chilling”
e1“cucumber”
Claim · model-written summary
Manipulating APX, CAT, or DPPH activity was proposed to improve persistent chilling tolerance.
- Taxon
- cucumberCucumis sativuse1
- Gene
- APX, CATe0
- Outcome
- superior and persistent chilling tolerancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Manipulation of APX, CAT, and/or DPPH activity could produce plants with superior and persistent chilling tolerance.”
e1“cucumber”
The same questions in other papers
cold · growth · Cucumis sativus (cucumber)Positive and negative results
26 papers in the same direction as this paper · 5 in the opposite direction
- positive
- negative
- negative
28 papers more in this group
See all 32 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.