Abstract
Under water stress, relative water content, water potential, net photosynthesis rate, soluble protein and chlorophyll contents in leaves of pomelo 〔Citrus maxima (Burm.) Merr.〕 seedlings were decreased, MDA and free proline contents, SOD activity were increased, CAT activity increased at first, then decreased. The activity of APX, the contents of AsA and GSH were declined. Chlorophyll fluorescence parameters Fv / Fm, ΦPSⅡ and q\-\{p\}were decreased, q\-\{N\}and K\-\{D\}were raised. It demonstrated that membrane and photosystem PSⅡ were the important target of water stress. The capacity of getting rid of activated oxygen was higher in the drought\|resistant variety than in the drought\|sensitive one. Long\|term enhanced UV\|B radiation could delay the decrease of relative water content, water potential, APX activity and GSH, AsA contents in leaves of pomelo seedlings under water stress, but had no obvious effects on Pn, free proline content and chlorophyll fluorescence parameters. The results suggested that UV\|B and water stress owned partial same functional model to plants with leading to membrane lipid peroxidation aggravation and PSⅡ inactivation, meanwhile there were specific properties of individual action model were existed.
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Claims 9
Claim · model-written summary
Water stress decreased five pomelo leaf water and photosynthetic measures.
- Taxon
- pomelo
Citrus maximae0 - Organ / stage
- leavese0
- Treatment
- water stresse0
- Outcome
- relative water content, water potential, net photosynthesis rate, soluble protein and chlorophyll contentse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under water stress, relative water content, water potential, net photosynthesis rate, soluble protein and chlorophyll contents in leaves of pomelo 〔Citrus maxima (Burm.) Merr.〕 seedlings were decreased”
Claim · model-written summary
Water stress increased MDA, proline and SOD activity.
- Taxon
- pomeloCitrus maximat0
- Treatment
- water stresse1
- Outcome
- MDA and free proline contents, SOD activitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MDA and free proline contents, SOD activity were increased”
t0“pomelo”
e1“Under water stress”
Claim · model-written summary
CAT activity first increased, then decreased under water stress.
- Taxon
- pomeloCitrus maximat0
- Outcome
- CAT activitye0
- Direction
- increased at first, then decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CAT activity increased at first, then decreased”
t0“pomelo”
Claim · model-written summary
APX activity, AsA and GSH declined.
- Taxon
- pomeloCitrus maximat0
- Treatment
- water stresse1
- Outcome
- activity of APX, the contents of AsA and GSHe0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activity of APX, the contents of AsA and GSH were declined”
t0“pomelo”
e1“Under water stress”
Claim · model-written summary
Fv/Fm, ΦPSⅡ and q-p declined.
- Taxon
- pomeloCitrus maximat0
- Treatment
- water stresse1
- Outcome
- Chlorophyll fluorescence parameters Fv / Fm, ΦPSⅡ and q\-\{p\}e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll fluorescence parameters Fv / Fm, ΦPSⅡ and q\-\{p\}were decreased”
t0“pomelo”
e1“Under water stress”
Claim · model-written summary
q-N and K-D rose.
- Taxon
- pomeloCitrus maximat0
- Treatment
- water stresse1
- Outcome
- q\-\{N\}and K\-\{D\}e0
- Direction
- raisede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“q\-\{N\}and K\-\{D\}were raised”
t0“pomelo”
e1“Under water stress”
Claim · model-written summary
Drought resistant varieties had greater activated oxygen removal capacity.
- Taxon
- pomeloCitrus maximat0
- Material
- drought\|resistant varietye0
- Outcome
- capacity of getting rid of activated oxygene0
- Direction
- highere0
- Comparator
- drought\|sensitive onee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The capacity of getting rid of activated oxygen was higher in the drought\|resistant variety than in the drought\|sensitive one”
t0“pomelo”
Claim · model-written summary
Long term UV-B delayed drought related declines in leaf water measures and antioxidants.
- Taxon
- pomeloCitrus maximae0
- Treatment
- Long\|term enhanced UV\|B radiatione0
- Outcome
- relative water content, water potential, APX activity and GSH, AsA contentse0
- Direction
- delay the decreasee0
- Qualifier
- under water stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long\|term enhanced UV\|B radiation could delay the decrease of relative water content, water potential, APX activity and GSH, AsA contents in leaves of pomelo seedlings under water stress”
Claim · model-written summary
UV-B had no obvious effect on Pn, proline or fluorescence parameters under drought.
- Taxon
- pomeloCitrus maximat0
- Treatment
- Long\|term enhanced UV\|B radiatione1
- Outcome
- Pn, free proline content and chlorophyll fluorescence parameterse0
- Direction
- no obvious effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“had no obvious effects on Pn, free proline content and chlorophyll fluorescence parameters”
t0“pomelo”
e1“Long\|term enhanced UV\|B radiation”
The same questions in other papers
radiation · physiology: photosynthesis · Citrus maxima (pummelo)Results agree
1 paper in the same direction as this paper
- negative
drought · physiology: antioxidant enzymes · Citrus maxima (pummelo)Results agree
1 paper in the same direction as this paper
- negative
uv · physiology: photosynthesis · Citrus maxima (pummelo)Results agree
2 papers in the same direction as this paper
- negative
- negative
drought · physiology: photosynthesis · Citrus maxima (pummelo)Results agree
2 papers in the same direction as this paper
- negative
- negative
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.