Abstract
Taking Cucurbita moschata Duch hybrid 360-3 x 112-2 and C. ficifolia Bouche as test materials, the effects of NaCl stress on their plant growth and the O2*- production rate and H2O2 and free polyamines (PAs) contents in their roots were studied with hydroponic culture. The results showed that after 10 d NaCl stress, the plant growth of the two pumpkin varieties was strongly inhibited, compared with the control, and C. ficifolia was more injured than hybrid 360-3 x 112-2. Under NaCl stress, the root O2*- production rate and H2O2 content of the two pumpkin varieties were increased, but their absolute values were lower in hybrid 360-3 x 112-2 than in C. ficifolia. The contents of PAs, putrescine (Put), spermidine (Spd) and spermine (Spm) and Put/PAs ratio in the roots of the two pumpkin varieties were always higher than the control and had a trend of increased first and decreased then; while the (Spd + Spm)/Put ratio was lower than the control and decreased first and increased then. Compared with C. ficifolia Bouche, hybrid 360-3 x 112-2 always had a lower Put/PAs ratio and a lower Put content in its roots, but the (Spd + Spm)/Put ratio and Spd and Spm contents were always higher. It was concluded that under NaCl stress, the increasing PAs content in the roots of test materials played an active role in decreasing or scavenging reactive oxygen species (ROS). The conversion of Put to Spd and Spm was advantageous to the increase of plant salt tolerance. The higher salt tolerance of hybrid 360-3 x 112-2 was closely related to the lower Put/PAs ratio and the higher (Spd + Spm)/Put ratio and PAs content in its roots, and thus, the stronger capacity to scavenge ROS.
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Claims 15
Claim · model-written summary
Cucurbita moschata Duch growth was inhibited after ten days of NaCl stress.
- Taxon
- Cucurbita moschata Duch
Cucurbita moschatae1 - Treatment
- NaCl stresse0
- Outcome
- plant growthe0
- Direction
- inhibitede0
- Value
- 10 de0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“after 10 d NaCl stress, the plant growth of the two pumpkin varieties was strongly inhibited, compared with the control, and C. ficifolia was more injured than hybrid 360-3 x 112-2”
e1“Taking Cucurbita moschata Duch hybrid 360-3 x 112-2 and C. ficifolia Bouche as test materials”
Claim · model-written summary
C. ficifolia Bouche growth was inhibited after ten days of NaCl stress.
- Taxon
- C. ficifolia Bouche
Cucurbita ficifoliae1 - Treatment
- NaCl stresse0
- Outcome
- plant growthe0
- Direction
- inhibitede0
- Value
- 10 de0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“after 10 d NaCl stress, the plant growth of the two pumpkin varieties was strongly inhibited, compared with the control, and C. ficifolia was more injured than hybrid 360-3 x 112-2”
e1“Taking Cucurbita moschata Duch hybrid 360-3 x 112-2 and C. ficifolia Bouche as test materials”
Claim · model-written summary
C. ficifolia was more injured than the hybrid.
- Taxon
- C. ficifoliaCucurbita ficifoliae0
- Material
- hybrid 360-3 x 112-2e0
- Outcome
- more injurede0
- Direction
- more injurede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“after 10 d NaCl stress, the plant growth of the two pumpkin varieties was strongly inhibited, compared with the control, and C. ficifolia was more injured than hybrid 360-3 x 112-2”
Claim · model-written summary
O2*- production rate increased under salt stress in both pumpkin varieties.
- Taxon
- pumpkine0
- Organ / stage
- roote0
- Treatment
- NaCl stresse0
- Outcome
- O2*- production ratee0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Under NaCl stress, the root O2*- production rate and H2O2 content of the two pumpkin varieties were increased, but their absolute values were lower in hybrid 360-3 x 112-2 than in C. ficifolia”
Claim · model-written summary
H2O2 content increased under salt stress in both pumpkin varieties.
Not reportedComparator
Verbatim
e0“Under NaCl stress, the root O2*- production rate and H2O2 content of the two pumpkin varieties were increased, but their absolute values were lower in hybrid 360-3 x 112-2 than in C. ficifolia”
Claim · model-written summary
Root ROS measures were lower in the hybrid than in C. ficifolia.
Verbatim
e0“Under NaCl stress, the root O2*- production rate and H2O2 content of the two pumpkin varieties were increased, but their absolute values were lower in hybrid 360-3 x 112-2 than in C. ficifolia”
Claim · model-written summary
Root polyamines and Put/PAs ratio were higher under salt stress, rising then falling.
Verbatim
e0“The contents of PAs, putrescine (Put), spermidine (Spd) and spermine (Spm) and Put/PAs ratio in the roots of the two pumpkin varieties were always higher than the control and had a trend of increased first and decreased then; while the (Spd + Spm)/Put ratio was lower than the control and decreased first and increased then”
e1“Under NaCl stress, the root O2*- production rate and H2O2 content of the two pumpkin varieties were increased, but their absolute values were lower in hybrid 360-3 x 112-2 than in C. ficifolia”
Claim · model-written summary
The (Spd + Spm)/Put ratio was lower under salt stress and fell then rose.
Verbatim
e0“The contents of PAs, putrescine (Put), spermidine (Spd) and spermine (Spm) and Put/PAs ratio in the roots of the two pumpkin varieties were always higher than the control and had a trend of increased first and decreased then; while the (Spd + Spm)/Put ratio was lower than the control and decreased first and increased then”
e1“Under NaCl stress, the root O2*- production rate and H2O2 content of the two pumpkin varieties were increased, but their absolute values were lower in hybrid 360-3 x 112-2 than in C. ficifolia”
Claim · model-written summary
The hybrid had lower root Put/PAs ratio than C. ficifolia.
- Taxon
- Cucurbita moschata DuchCucurbita moschatae1
- Material
- hybrid 360-3 x 112-2e0
- Organ / stage
- rootse0
- Outcome
- Put/PAs ratioe0
- Direction
- lowere0
- Comparator
- C. ficifolia Bouchee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with C. ficifolia Bouche, hybrid 360-3 x 112-2 always had a lower Put/PAs ratio and a lower Put content in its roots, but the (Spd + Spm)/Put ratio and Spd and Spm contents were always higher”
e1“Taking Cucurbita moschata Duch hybrid 360-3 x 112-2 and C. ficifolia Bouche as test materials”
Claim · model-written summary
The hybrid had lower root Put content than C. ficifolia.
- Taxon
- Cucurbita moschata DuchCucurbita moschatae1
- Material
- hybrid 360-3 x 112-2e0
- Organ / stage
- rootse0
- Outcome
- Put contente0
- Direction
- lowere0
- Comparator
- C. ficifolia Bouchee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with C. ficifolia Bouche, hybrid 360-3 x 112-2 always had a lower Put/PAs ratio and a lower Put content in its roots, but the (Spd + Spm)/Put ratio and Spd and Spm contents were always higher”
e1“Taking Cucurbita moschata Duch hybrid 360-3 x 112-2 and C. ficifolia Bouche as test materials”
Claim · model-written summary
The hybrid had higher root (Spd + Spm)/Put ratio than C. ficifolia.
- Taxon
- Cucurbita moschata DuchCucurbita moschatae1
- Material
- hybrid 360-3 x 112-2e0
- Organ / stage
- rootse0
- Outcome
- (Spd + Spm)/Put ratioe0
- Direction
- highere0
- Comparator
- C. ficifolia Bouchee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with C. ficifolia Bouche, hybrid 360-3 x 112-2 always had a lower Put/PAs ratio and a lower Put content in its roots, but the (Spd + Spm)/Put ratio and Spd and Spm contents were always higher”
e1“Taking Cucurbita moschata Duch hybrid 360-3 x 112-2 and C. ficifolia Bouche as test materials”
Claim · model-written summary
The hybrid had higher root Spd and Spm contents than C. ficifolia.
- Taxon
- Cucurbita moschata DuchCucurbita moschatae1
- Material
- hybrid 360-3 x 112-2e0
- Organ / stage
- rootse0
- Outcome
- Spd and Spm contentse0
- Direction
- highere0
- Comparator
- C. ficifolia Bouchee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with C. ficifolia Bouche, hybrid 360-3 x 112-2 always had a lower Put/PAs ratio and a lower Put content in its roots, but the (Spd + Spm)/Put ratio and Spd and Spm contents were always higher”
e1“Taking Cucurbita moschata Duch hybrid 360-3 x 112-2 and C. ficifolia Bouche as test materials”
Claim · model-written summary
Increasing root PAs was interpreted to reduce or scavenge ROS under NaCl stress.
- Taxon
- Cucurbita moschata DuchCucurbita moschatae1
- Outcome
- decreasing or scavenging reactive oxygen species (ROS)e0
- Qualifier
- increasing PAs content in the rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was concluded that under NaCl stress, the increasing PAs content in the roots of test materials played an active role in decreasing or scavenging reactive oxygen species (ROS)”
e1“Taking Cucurbita moschata Duch hybrid 360-3 x 112-2 and C. ficifolia Bouche as test materials”
Claim · model-written summary
Conversion of Put to Spd and Spm was interpreted as advantageous for salt tolerance.
- Taxon
- Cucurbita moschata DuchCucurbita moschatae1
- Outcome
- plant salt tolerancee0
- Qualifier
- conversion of Put to Spd and Spme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The conversion of Put to Spd and Spm was advantageous to the increase of plant salt tolerance”
e1“Taking Cucurbita moschata Duch hybrid 360-3 x 112-2 and C. ficifolia Bouche as test materials”
Claim · model-written summary
Higher salt tolerance of the hybrid was related to its polyamine profile and ROS scavenging.
- Taxon
- Cucurbita moschata DuchCucurbita moschatae1
- Material
- hybrid 360-3 x 112-2e0
- Outcome
- higher salt tolerancee0
- Direction
- highere0
- Qualifier
- lower Put/PAs ratio and the higher (Spd + Spm)/Put ratio and PAs contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher salt tolerance of hybrid 360-3 x 112-2 was closely related to the lower Put/PAs ratio and the higher (Spd + Spm)/Put ratio and PAs content in its roots, and thus, the stronger capacity to scavenge ROS”
e1“Taking Cucurbita moschata Duch hybrid 360-3 x 112-2 and C. ficifolia Bouche as test materials”
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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.