Abstract
Chilling stress is one of main constraint factors for tobacco production in many regions of the world. In order to study the lipid peroxidation and antioxidant system of flue-cured tobacco seedling after chilling stress, the experiment was conducted with different stressful period which was 2, 4 and 6 days under 5 to 7°C by the material named Yunyan87, Msk326 and Yunyan85, respectively. The results indicated that the rate of O2- production in leaves of three cultivars significantly declined at short-term (2 to 4 days) chilling stress. The malondialdehyde (MDA) contents and electric conductivities presented increasing at 2 to 4 days chilling treatments for YY87 and YY85 while those were similar to that of control seedling for K326. Superoxide dismutase (SOD) activities of YY87 remained similar to that of control plants while SOD activities of K326 and YY85 took reverse change. Catalase (CAT) and peroxidase (POD) activities of YY87 and YY85 enhanced under chilling stress, and reached remarkable difference under 6 days chilling stress; As for K326, CAT activities were the maximum under 4 days chilling stress, and POD activities had a prominent decline under 2 days cold stress and increased significantly after that. Except glutathione (GSH) contents of YY87 declined at 6 days chilling, the contents of ascorbic acid (ASA) and glutathione (GSH) were significantly higher in leaves of others treatments comparing with that of controls. Key words: Chilling stress, flue-cured tobacco, lipid peroxidation, antioxidant enzymes, ascorbic acid, glutathione.
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
O2- production in leaves of three tobacco cultivars declined significantly after 2 to 4 days of chilling.
- Taxon
- Nicotiana tabacum L.
Nicotiana tabacumt0 - Organ / stage
- leavese0
- Treatment
- chilling stresse0
- Outcome
- rate of O2- productione0
- Direction
- declinede0
- Value
- 2 to 4 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the rate of O2- production in leaves of three cultivars significantly declined at short-term (2 to 4 days) chilling stress”
t0“Nicotiana tabacum L.”
Claim · model-written summary
MDA content and electrical conductivity increased after 2 to 4 days of chilling in YY87 and YY85.
- Taxon
- Nicotiana tabacum L.Nicotiana tabacumt0
- Material
- YY87 and YY85e0
- Treatment
- chilling treatmentse0
- Outcome
- malondialdehyde (MDA) contents and electric conductivitiese0
- Direction
- increasinge0
- Value
- 2 to 4 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The malondialdehyde (MDA) contents and electric conductivities presented increasing at 2 to 4 days chilling treatments for YY87 and YY85”
t0“Nicotiana tabacum L.”
Claim · model-written summary
MDA content and electrical conductivity in K326 were similar to control seedlings.
- Taxon
- Nicotiana tabacum L.Nicotiana tabacumt0
- Material
- K326e0
- Treatment
- chilling treatmentse1
- Outcome
- malondialdehyde (MDA) contents and electric conductivitiese2
- Direction
- similare0
- Comparator
- control seedlinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“those were similar to that of control seedling for K326”
t0“Nicotiana tabacum L.”
e1“The malondialdehyde (MDA) contents and electric conductivities presented increasing at 2 to 4 days chilling treatments for YY87 and YY85”
e2“The malondialdehyde (MDA) contents and electric conductivities presented increasing at 2 to 4 days chilling treatments for YY87 and YY85”
Claim · model-written summary
SOD activity in YY87 remained similar to control plants.
- Taxon
- Nicotiana tabacum L.Nicotiana tabacumt0
- Material
- YY87e0
- Treatment
- chilling stresse1
- Outcome
- Superoxide dismutase (SOD) activitiese0
- Direction
- similare0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Superoxide dismutase (SOD) activities of YY87 remained similar to that of control plants”
t0“Nicotiana tabacum L.”
e1“the rate of O2- production in leaves of three cultivars significantly declined at short-term (2 to 4 days) chilling stress”
Claim · model-written summary
SOD activities of K326 and YY85 showed a reverse change.
- Taxon
- Nicotiana tabacum L.Nicotiana tabacumt0
- Material
- K326 and YY85e0
- Outcome
- SOD activitiese0
- Direction
- reverse changee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SOD activities of K326 and YY85 took reverse change”
t0“Nicotiana tabacum L.”
Claim · model-written summary
CAT and POD activities in YY87 and YY85 rose under chilling, with a remarkable difference by day 6.
- Taxon
- Nicotiana tabacum L.Nicotiana tabacumt0
- Material
- YY87 and YY85e0
- Treatment
- chilling stresse0
- Outcome
- Catalase (CAT) and peroxidase (POD) activitiese0
- Direction
- enhancede0
- Value
- 6 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Catalase (CAT) and peroxidase (POD) activities of YY87 and YY85 enhanced under chilling stress, and reached remarkable difference under 6 days chilling stress”
t0“Nicotiana tabacum L.”
Claim · model-written summary
CAT activity in K326 was greatest after four days of chilling.
- Taxon
- Nicotiana tabacum L.Nicotiana tabacumt0
- Material
- K326e0
- Treatment
- 4 days chilling stresse0
- Outcome
- CAT activitiese0
- Direction
- maximume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As for K326, CAT activities were the maximum under 4 days chilling stress”
t0“Nicotiana tabacum L.”
Claim · model-written summary
POD activity in K326 declined prominently after two days of cold stress.
- Taxon
- Nicotiana tabacum L.Nicotiana tabacumt0
- Material
- K326e1
- Treatment
- 2 days cold stresse0
- Outcome
- POD activitiese0
- Direction
- declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“POD activities had a prominent decline under 2 days cold stress”
t0“Nicotiana tabacum L.”
e1“those were similar to that of control seedling for K326”
Claim · model-written summary
POD activity in K326 then increased significantly.
- Taxon
- Nicotiana tabacum L.Nicotiana tabacumt0
- Material
- K326e2
- Outcome
- POD activitiese1
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased significantly after that”
t0“Nicotiana tabacum L.”
e1“POD activities had a prominent decline under 2 days cold stress”
e2“those were similar to that of control seedling for K326”
Claim · model-written summary
GSH content in YY87 declined after six days of chilling.
- Taxon
- Nicotiana tabacum L.Nicotiana tabacumt0
- Material
- YY87e0
- Treatment
- 6 days chillinge0
- Outcome
- glutathione (GSH) contentse0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“glutathione (GSH) contents of YY87 declined at 6 days chilling”
t0“Nicotiana tabacum L.”
Claim · model-written summary
ASA and GSH contents in other chilling treatments were significantly higher than controls.
- Taxon
- Nicotiana tabacum L.Nicotiana tabacumt0
- Organ / stage
- leavese0
- Treatment
- others treatmentse0
- Outcome
- contents of ascorbic acid (ASA) and glutathione (GSH)e0
- Direction
- highere0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the contents of ascorbic acid (ASA) and glutathione (GSH) were significantly higher in leaves of others treatments comparing with that of controls”
t0“Nicotiana tabacum L.”
The same questions in other papers
cold · physiology: oxidative · Nicotiana tabacum (tobacco)Results differ
7 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
11 papers more in this group
See all 15 papers →cold · physiology: antioxidant enzymes · Nicotiana tabacum (tobacco)Positive and negative results
3 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
3 papers more in this group
See all 7 papers →cold · molecular: metabolites · Nicotiana tabacum (tobacco)Positive and negative results
7 papers in the same direction as this paper · 6 in the opposite direction
- positive
- positive
- positive
10 papers more in this group
See all 14 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.