Abstract
In this investigation an attempt has been made to study the effect of Zinc on primary reactions of photosynthesis. Photosystem II mediated electron transport activity exhibited 68% loss at 180 μM concentration. The PAM kinetic measurements revealed suppression of variable fluorescence in terms of relative distance from 5.4 to 2.7 Cm during the treatment. These measurements suggest that the targets of PSII are at water oxidation complex and Light harvesting complex as multiple sites of damage in Zinc toxicity. Another target site of zinc toxicity in photosystem II is evidenced from the loss of 33kDa protein band SDS-PAGE profiles of thylakoid membranes.
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Claims 4
Claim · model-written summary
Zinc at 180 μM caused a 68% loss of photosystem II mediated electron transport activity.
- Organ / stage
- thylakoid membranest0
- Treatment
- Zince1
- Outcome
- Photosystem II mediated electron transport activitye0
- Direction
- losse0
- Value
- 68%e0
- Qualifier
- 180 μM concentratione0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Characterization of alterations in photosynthetic electron transport activitiesin maize thylakoid membranes under zinc stress”
e0“Photosystem II mediated electron transport activity exhibited 68% loss at 180 μM concentration”
e1“In this investigation an attempt has been made to study the effect of Zinc on primary reactions of photosynthesis”
Claim · model-written summary
Zinc suppressed variable fluorescence, with relative distance changing from 5.4 to 2.7 cm.
- Organ / stage
- thylakoid membranest0
- Treatment
- Zince1
- Outcome
- suppression of variable fluorescencee2
- Direction
- suppressione2
- Value
- 5.4 to 2.7 Cme2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Characterization of alterations in photosynthetic electron transport activitiesin maize thylakoid membranes under zinc stress”
e1“In this investigation an attempt has been made to study the effect of Zinc on primary reactions of photosynthesis”
e2“The PAM kinetic measurements revealed suppression of variable fluorescence in terms of relative distance from 5.4 to 2.7 Cm during the treatment”
Claim · model-written summary
Zinc targets photosystem II at the water oxidation complex and the light-harvesting complex as sites of damage.
- Organ / stage
- thylakoid membranest0
- Treatment
- Zinc toxicitye3
- Outcome
- the targets of PSII are at water oxidation complex and Light harvesting complexe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Characterization of alterations in photosynthetic electron transport activitiesin maize thylakoid membranes under zinc stress”
e3“These measurements suggest that the targets of PSII are at water oxidation complex and Light harvesting complex as multiple sites of damage in Zinc toxicity”
Claim · model-written summary
Zinc toxicity is evidenced by loss of a 33 kDa thylakoid protein band.
- Organ / stage
- thylakoid membranest0
- Treatment
- zinc toxicitye4
- Gene
- 33kDa protein bande4
- Outcome
- loss of 33kDa protein bande4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Characterization of alterations in photosynthetic electron transport activitiesin maize thylakoid membranes under zinc stress”
e4“Another target site of zinc toxicity in photosystem II is evidenced from the loss of 33kDa protein band SDS-PAGE profiles of thylakoid membranes”
The same questions in other papers
zinc atom · physiology: photosynthesis · Zea mays (maize)Positive and negative results
2 papers in the same direction as this paper · 13 in the opposite direction
- positive
- positive
- positive
12 papers more in this group
See all 16 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.