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Variation in oxidative stress and photochemical activity in Arabidopsis thaliana leaves subjected to cadmium and excess copper in the presence or absence of jasmonate and ascorbate.
Chemosphere. 2007 Jan; 66(3):421-7.C

Abstract

We have presented changes in the photosynthetic apparatus activity of Arabidopsis thaliana plants occurring within 15-144 h of 100 microM Cu or Cd action with regard to jasmonate (JA) as well as expression of the oxidative stress and non-enzymic defense mechanisms. The inhibitory effect of both heavy metals related to developing dissipative processes and lipid peroxide formation was expressed in dark-adapted state after the longest time as a decrease in potential quantum yield of PSII. In dark- and light-adapted state the heavy metals affected the enzymic phase of photosynthesis already from the 15th hour, which was related to the lipid peroxide formation. Photochemical quenching decrease was induced after 48th hour and did not show a close correlation with the JA pathway. Blockade of endogenously formed JA by propyl gallate decreased the effect of Cu and Cd on both the whole photosynthetic apparatus starting from the 48th hour and on the primary photochemistry of PSII after 144 h. In the case of Cu the effect was related to a lipid peroxidation decrease and to an increase in glutathione and phytochelatin (PC) levels, but in the case of Cd to lipid peroxidation, O.2- and especially to PCs increase. The obtained results indicated that JA after the longest time might enhance the sensitivity of A. thaliana to Cu and Cd stress. Asc enhanced toxic action of Cu and Cd after 15 h, but after a longer time it diminished the influence of Cd (but not Cu) on photosynthetic activity.

Authors+Show Affiliations

Department of Plant Physiology, Maria Curie-Skłodowska University, 20-033 Lublin, Poland. waldimax@biotop.umcs.lublin.plNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16860844

Citation

Maksymiec, Waldemar, et al. "Variation in Oxidative Stress and Photochemical Activity in Arabidopsis Thaliana Leaves Subjected to Cadmium and Excess Copper in the Presence or Absence of Jasmonate and Ascorbate." Chemosphere, vol. 66, no. 3, 2007, pp. 421-7.
Maksymiec W, Wójcik M, Krupa Z. Variation in oxidative stress and photochemical activity in Arabidopsis thaliana leaves subjected to cadmium and excess copper in the presence or absence of jasmonate and ascorbate. Chemosphere. 2007;66(3):421-7.
Maksymiec, W., Wójcik, M., & Krupa, Z. (2007). Variation in oxidative stress and photochemical activity in Arabidopsis thaliana leaves subjected to cadmium and excess copper in the presence or absence of jasmonate and ascorbate. Chemosphere, 66(3), 421-7.
Maksymiec W, Wójcik M, Krupa Z. Variation in Oxidative Stress and Photochemical Activity in Arabidopsis Thaliana Leaves Subjected to Cadmium and Excess Copper in the Presence or Absence of Jasmonate and Ascorbate. Chemosphere. 2007;66(3):421-7. PubMed PMID: 16860844.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Variation in oxidative stress and photochemical activity in Arabidopsis thaliana leaves subjected to cadmium and excess copper in the presence or absence of jasmonate and ascorbate. AU - Maksymiec,Waldemar, AU - Wójcik,Małgorzata, AU - Krupa,Zbigniew, Y1 - 2006/07/24/ PY - 2006/01/26/received PY - 2006/05/30/revised PY - 2006/06/12/accepted PY - 2006/7/25/pubmed PY - 2007/4/3/medline PY - 2006/7/25/entrez SP - 421 EP - 7 JF - Chemosphere JO - Chemosphere VL - 66 IS - 3 N2 - We have presented changes in the photosynthetic apparatus activity of Arabidopsis thaliana plants occurring within 15-144 h of 100 microM Cu or Cd action with regard to jasmonate (JA) as well as expression of the oxidative stress and non-enzymic defense mechanisms. The inhibitory effect of both heavy metals related to developing dissipative processes and lipid peroxide formation was expressed in dark-adapted state after the longest time as a decrease in potential quantum yield of PSII. In dark- and light-adapted state the heavy metals affected the enzymic phase of photosynthesis already from the 15th hour, which was related to the lipid peroxide formation. Photochemical quenching decrease was induced after 48th hour and did not show a close correlation with the JA pathway. Blockade of endogenously formed JA by propyl gallate decreased the effect of Cu and Cd on both the whole photosynthetic apparatus starting from the 48th hour and on the primary photochemistry of PSII after 144 h. In the case of Cu the effect was related to a lipid peroxidation decrease and to an increase in glutathione and phytochelatin (PC) levels, but in the case of Cd to lipid peroxidation, O.2- and especially to PCs increase. The obtained results indicated that JA after the longest time might enhance the sensitivity of A. thaliana to Cu and Cd stress. Asc enhanced toxic action of Cu and Cd after 15 h, but after a longer time it diminished the influence of Cd (but not Cu) on photosynthetic activity. SN - 0045-6535 UR - https://www.unboundmedicine.com/medline/citation/16860844/Variation_in_oxidative_stress_and_photochemical_activity_in_Arabidopsis_thaliana_leaves_subjected_to_cadmium_and_excess_copper_in_the_presence_or_absence_of_jasmonate_and_ascorbate_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(06)00765-X DB - PRIME DP - Unbound Medicine ER -