Paper · 2015 · Journal of Tianjin Normal University

Effects of cadmium stress on physiological characters of leaves of Cucumis sativus L.

Sun Shen

7
claims
13
verbatim quotes
0
citations
1
research areas
—
Not open access

Abstract

Effects of Cd on leaf length,chlorophyll content,diurnal variation of photosynthesis and proline content of cucum-ber seedlings(JIN YOU 35,Cucumis sativus L.)treated in containers with different concentrations of Cd(0,10,50,100 and500 μmol/L)were investigated in the present study in order to further explore the possible mechanisms of Cd tolerance of C.sativus. The results indicated that:(1)The leaf length of C. sativus in the present investigation was found to be sensitive to Cd. The inhibition increased significantly with increasing concentrations of Cd and duration of time;(2)The chlorophyll content decreased firstly,then increased with increasing concentrations of Cd;(3) Cd inhibited photosynthesis significantly,and the photosynthetic index decreased significantly except for the stomatal limitation value. The diurnal variation of photo-synthesis changed slowly. Under 500 μmol/L Cd stress,C. sativus lost the characteristics of midday depression;(4)Under the stress of Cd,the contents of proline increased with the increase of the concentrations of Cd.

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Claims 7

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Cd inhibition of leaf length increased with concentration and time.

Taxon
Cucumis sativus L.Cucumis sativust0
Treatment
Cde0
Outcome
inhibitione0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The inhibition increased significantly with increasing concentrations of Cd and duration of time”

✓ located verbatim in the source · abstract, characters 485–581 · show in text ↑
t0

“Cucumis sativus L.”

✓ located verbatim in the source · title, characters 67–85 · show in text ↑
Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Chlorophyll first decreased then increased with greater Cd concentration.

Taxon
Cucumis sativus L.Cucumis sativust0
Treatment
Cde0
Outcome
chlorophyll contente0
Direction
decreased firstly,then increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The chlorophyll content decreased firstly,then increased with increasing concentrations of Cd”

✓ located verbatim in the source · abstract, characters 585–678 · show in text ↑
t0

“Cucumis sativus L.”

✓ located verbatim in the source · title, characters 67–85 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Cd significantly inhibited photosynthesis.

Taxon
Cucumis sativus L.Cucumis sativust0
Treatment
Cde0
Outcome
photosynthesise0
Direction
inhibitede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Cd inhibited photosynthesis significantly”

✓ located verbatim in the source · abstract, characters 683–724 · show in text ↑
t0

“Cucumis sativus L.”

✓ located verbatim in the source · title, characters 67–85 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Photosynthetic indices decreased significantly except stomatal limitation.

Taxon
Cucumis sativus L.Cucumis sativust0
Outcome
photosynthetic indexe0
Direction
decreasede0
Qualifier
except for the stomatal limitation valuee0

Not reportedTreatmentComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the photosynthetic index decreased significantly except for the stomatal limitation value”

✓ located verbatim in the source · abstract, characters 729–818 · show in text ↑
t0

“Cucumis sativus L.”

✓ located verbatim in the source · title, characters 67–85 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Diurnal photosynthesis variation changed slowly under Cd.

Taxon
Cucumis sativus L.Cucumis sativust0
Outcome
diurnal variation of photo-synthesise0
Direction
changed slowlye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The diurnal variation of photo-synthesis changed slowly.”

✓ located verbatim in the source · abstract, characters 820–876 · show in text ↑
t0

“Cucumis sativus L.”

✓ located verbatim in the source · title, characters 67–85 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At 500 μmol/L Cd, cucumber lacked midday depression.

Taxon
C. sativusCucumis sativuse0
Treatment
500 μmol/L Cd stresse0
Outcome
midday depressione0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Under 500 μmol/L Cd stress,C. sativus lost the characteristics of midday depression”

✓ located verbatim in the source · abstract, characters 877–960 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Proline content increased with Cd concentration.

Taxon
Cucumis sativus L.Cucumis sativust0
Treatment
Cde0
Outcome
contents of prolinee0
Direction
increasede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Under the stress of Cd,the contents of proline increased with the increase of the concentrations of Cd.”

✓ located verbatim in the source · abstract, characters 964–1067 · show in text ↑
t0

“Cucumis sativus L.”

✓ located verbatim in the source · title, characters 67–85 · show in text ↑

cadmium atom · disease · Cucumis sativus (cucumber)Positive and negative results

4 papers: 2 positive, 2 negative or no effect

1 paper in the same direction as this paper · 2 in the opposite direction

  1. positive
  2. positive
  3. negative
See all 4 papers →

cadmium atom · physiology: photosynthesis · Cucumis sativus (cucumber)Results agree

5 papers: 0 positive, 5 negative or no effect

4 papers in the same direction as this paper

  1. negative
  2. negative
  3. negative

1 paper more in this group

See all 5 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.