Effect of exogenous potassium on photosynthesis and antioxidant enzymes of rice under iron toxicity
A solution culture experiment was conducted to determine the effects of different potassium concentrations on the chlorophyll fluorescence and oxidation resistance of the Fe 2+ -tolerant rice ( Oryza sativa L.) genotype Xieyou 9308 and the Fe 2+ -sensitive genotype IIyou 838 exposed to 250 mg/L of F...
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| Published in | Russian journal of plant physiology Vol. 61; no. 1; pp. 47 - 52 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | English |
| Published |
Boston
Springer US
01.01.2014
|
| Subjects | |
| Online Access | Get full text |
| ISSN | 1021-4437 1608-3407 |
| DOI | 10.1134/S1021443714010051 |
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| Abstract | A solution culture experiment was conducted to determine the effects of different potassium concentrations on the chlorophyll fluorescence and oxidation resistance of the Fe
2+
-tolerant rice (
Oryza sativa
L.) genotype Xieyou 9308 and the Fe
2+
-sensitive genotype IIyou 838 exposed to 250 mg/L of Fe
2+
. The minimal fluorescence, maximum fluorescence efficiency, maximum fluorescence, and non-photochemical quenching coefficient showed no significant changes. However, the photochemical quenching coefficient increased. Under 200 mg/L K
+
concentration, the effects of Fe
2+
stress decreased. Compared with the control group, chlorophyll content and peroxidase, superoxide dismutase, and catalase activities decreased, whereas MDA content increased under Fe
2+
stress. Exogenous K
+
alleviated Fe
2+
toxicity in the test subjects compared with the control group. Overall, external K
+
could alleviate the toxic effects of Fe
2+
toxicity. |
|---|---|
| AbstractList | A solution culture experiment was conducted to determine the effects of different potassium concentrations on the chlorophyll fluorescence and oxidation resistance of the Fe
2+
-tolerant rice (
Oryza sativa
L.) genotype Xieyou 9308 and the Fe
2+
-sensitive genotype IIyou 838 exposed to 250 mg/L of Fe
2+
. The minimal fluorescence, maximum fluorescence efficiency, maximum fluorescence, and non-photochemical quenching coefficient showed no significant changes. However, the photochemical quenching coefficient increased. Under 200 mg/L K
+
concentration, the effects of Fe
2+
stress decreased. Compared with the control group, chlorophyll content and peroxidase, superoxide dismutase, and catalase activities decreased, whereas MDA content increased under Fe
2+
stress. Exogenous K
+
alleviated Fe
2+
toxicity in the test subjects compared with the control group. Overall, external K
+
could alleviate the toxic effects of Fe
2+
toxicity. A solution culture experiment was conducted to determine the effects of different potassium concentrations on the chlorophyll fluorescence and oxidation resistance of the Fe²⁺-tolerant rice (Oryza sativa L.) genotype Xieyou 9308 and the Fe²⁺-sensitive genotype IIyou 838 exposed to 250 mg/L of Fe²⁺. The minimal fluorescence, maximum fluorescence efficiency, maximum fluorescence, and non-photochemical quenching coefficient showed no significant changes. However, the photochemical quenching coefficient increased. Under 200 mg/L K⁺concentration, the effects of Fe²⁺stress decreased. Compared with the control group, chlorophyll content and peroxidase, superoxide dismutase, and catalase activities decreased, whereas MDA content increased under Fe²⁺stress. Exogenous K⁺alleviated Fe²⁺toxicity in the test subjects compared with the control group. Overall, external K⁺could alleviate the toxic effects of Fe²⁺toxicity. |
| Author | Liu, P. Zheng, G. H. Wu, Y. H. Gao, P. P. |
| Author_xml | – sequence: 1 givenname: P. P. surname: Gao fullname: Gao, P. P. organization: Key Laboratory of Botany, Zhejiang Normal University – sequence: 2 givenname: G. H. surname: Zheng fullname: Zheng, G. H. organization: Key Laboratory of Botany, Zhejiang Normal University – sequence: 3 givenname: Y. H. surname: Wu fullname: Wu, Y. H. organization: College of Life and Environmental Science, Hangzhou Normal University – sequence: 4 givenname: P. surname: Liu fullname: Liu, P. email: pliu99@vip.sina.com organization: Key Laboratory of Botany, Zhejiang Normal University |
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| Cites_doi | 10.1104/pp.95.2.648 10.1016/0891-5849(87)90019-0 10.1023/A:1006391113097 10.1016/S0304-4165(89)80016-9 10.1046/j.1365-313X.1996.10050835.x 10.1007/BF00015422 10.1080/15216549800201672 10.1111/j.1469-8137.1985.tb02826.x 10.1016/S0065-2296(08)60045-2 |
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| Keywords | potassium oxidation resistance chlorophyll fluorescence iron stress |
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| SubjectTerms | Biomedical and Life Sciences chlorophyll fluorescence genotype iron Life Sciences Oryza sativa photosynthesis Plant Physiology Plant Sciences potassium Research Papers rice superoxide dismutase toxicity toxicity testing |
| Title | Effect of exogenous potassium on photosynthesis and antioxidant enzymes of rice under iron toxicity |
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