Abstract
Cd induced changes in the accumulation of chlorophyll-protein complexes were studied during the iron induced re-greening of iron deficient cucumber plants to see how the Cd-induced alterations develop during the thylakoid biogenesis, and whether the altered de- velopment of chlorophyll-protein complexes and the changed iron metabolism are connected. Treatment with 1 µM Cd resulted in strong decrease in iron content of leaves compared to the controls, but Cd could not be detected in the leaves. It was accompanied with strong retardation of chlorophyll synthesis and biogenesis of chlorophyll-protein complexes, particularly photo- system I, the amount of which even decreased at the later period of greening. During the re- greening, the actual efficiency of photosystem II and CO2 fixation capacity recovered totally and partially, respectively. It was concluded that both retardation of the biogenesis of the complexes due to iron and chlorophyll deficiency and degradation processes affecting mainly photosystem I were involved in Cd induced changes in the pattern of chlorophyll-protein complexes. Acta Biol Szeged 52(1):183-186 (2008) KEY WORDS cadmium chlorophyll-protein complexes greening
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Claims 8
Claim · model-written summary
Cd treatment strongly decreased leaf iron content compared with controls.
- Taxon
- cucumber
Cucumis sativust0 - Treatment
- 1 µM Cde0
- Outcome
- iron content of leavese0
- Direction
- strong decreasee0
- Comparator
- the controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“Treatment with 1 µM Cd resulted in strong decrease in iron content of leaves compared to the controls”
Claim · model-written summary
Cd was not detected in cucumber leaves after treatment.
- Taxon
- cucumberCucumis sativust0
- Outcome
- Cd could not be detected in the leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“Cd could not be detected in the leaves”
Claim · model-written summary
Cd treatment strongly retarded chlorophyll synthesis during re-greening.
- Taxon
- cucumberCucumis sativust0
- Treatment
- Cde1
- Outcome
- chlorophyll synthesise0
- Direction
- strong retardatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“It was accompanied with strong retardation of chlorophyll synthesis and biogenesis of chlorophyll-protein complexes”
e1“Treatment with 1 µM Cd”
Claim · model-written summary
Cd treatment strongly retarded biogenesis of chlorophyll-protein complexes.
- Taxon
- cucumberCucumis sativust0
- Treatment
- Cde1
- Outcome
- biogenesis of chlorophyll-protein complexese0
- Direction
- strong retardatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“It was accompanied with strong retardation of chlorophyll synthesis and biogenesis of chlorophyll-protein complexes”
e1“Treatment with 1 µM Cd”
Claim · model-written summary
The amount of photosystem I decreased in the later period of greening.
- Taxon
- cucumberCucumis sativust0
- Organ / stage
- later period of greeninge0
- Outcome
- photo- system Ie0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“particularly photo- system I, the amount of which even decreased at the later period of greening”
Claim · model-written summary
Actual photosystem II efficiency recovered totally during re-greening.
- Taxon
- cucumberCucumis sativust0
- Organ / stage
- re- greeninge0
- Outcome
- actual efficiency of photosystem IIe0
- Direction
- recovered totallye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“During the re- greening, the actual efficiency of photosystem II and CO2 fixation capacity recovered totally and partially, respectively”
Claim · model-written summary
CO2 fixation capacity recovered partially during re-greening.
- Taxon
- cucumberCucumis sativust0
- Organ / stage
- re- greeninge0
- Outcome
- CO2 fixation capacitye0
- Direction
- partiallye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“During the re- greening, the actual efficiency of photosystem II and CO2 fixation capacity recovered totally and partially, respectively”
Claim · model-written summary
The authors attributed Cd-induced complex changes to delayed biogenesis from iron and chlorophyll deficiency and degradation mainly affecting photosystem I.
- Taxon
- cucumberCucumis sativust0
- Outcome
- Cd induced changes in the pattern of chlorophyll-protein complexese0
- Qualifier
- iron and chlorophyll deficiency and degradation processes affecting mainly photosystem Ie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“both retardation of the biogenesis of the complexes due to iron and chlorophyll deficiency and degradation processes affecting mainly photosystem I were involved in Cd induced changes in the pattern of chlorophyll-protein complexes”
The same questions in other papers
cadmium atom · nutrient: content · Cucumis sativus (cucumber)Positive and negative results
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- positive
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See all 8 papers →cadmium atom · physiology: pigments · Cucumis sativus (cucumber)Results agree
5 papers in the same direction as this paper
- negative
- negative
- negative
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See all 6 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.