• Corpus ID: 37427497

No . 111 Possible roles of zinc in protecting plant cells from damage by reactive oxygen species

  title={No . 111 Possible roles of zinc in protecting plant cells from damage by reactive oxygen species},
  author={Ismail Cakmak and Horst Marschner},
 S 185 I.  186 II.          186 1. Superoxide-generating NADPH oxidase 186 2. Zinc deficiency potentiates iron-mediated free radical production 189 (a) Iron accumulation in zinc-deficient plants 189 (b) Iron-induced production of free radicals 189 3. Zinc deficiency-enhanced photooxidation 191 (a) Decrease in photosynthesis 191 (b) Light-induced leaf chlorosis 192 (c) Decrease in indole-3-acetic acid 192 III… 
1 Citations

Figures and Tables from this paper

Zinc alleviates salt stress and increases antioxidant enzyme activity in the leaves of pistachio (Pistacia vera L. 'Badami') seedlings.
The mechanism(s) by which Zn alleviates NaCl stress was investigated in Pistacia vera L. 'Badami'. Pistachio seedlings were treated with 0, 800, 1600, 2400, and 3200 mg of NaCl kg-1 of soil, along


Zinc deficiency enhanced NAD(P)H-dependent superoxider radical production in plasma membrane vesicles isolated from roots of bean plants
The production of superoxide radical (O 2 .- ) was studied in plasma membrane vesicles isolated by aqueous polymer two-phase partitioning from roots of zinc-sufficient and zinc-deficient bean
Iron‐catalysed oxygen radical formation and its possible contribution to drought damage in nine native grasses and three cereals
Results indicate that damage arising in the early phases of drought appears to be initiated within the chloroplast and to be largely confined to the photosynthetic tissue, despite quantitatively larger, more rapid, losses in water content.
The role of active oxygen in the response of plants to water deficit and desiccation.
  • N. Smirnoff
  • Environmental Science
    The New phytologist
  • 1993
During normally-encountered degrees of water deficit the capacity of the antioxidant systems and their ability to respond to increased active oxygen generation may be sufficient to prevent overt expression of damage.
Oxygen Stress and Superoxide Dismutases
The accumulation of dioxygen in Earth's atmosphere allowed for the evolution of aerobic organisms that use O2 as the terminal electron acceptor, thus providing a higher yield of energy compared with
Overexpression of Copper/Zinc Superoxide Dismutase in the Cytosol of Transgenic Tobacco Confers Partial Resistance to Ozone-Induced Foliar Necrosis
The hypothesis that plants that constitutively overexpress cytosolic SOD are more tolerant of ozone is tested and may demonstrate the importance of Cu/Zn-SOD in the cytosol as a protector of the integrity of the plasma membrane and possibly other cellular constituents.
Iron-induced carcinogenesis: the role of redox regulation.
The nature and localization of superoxide dismutase in fronds of Lemna gibba L. and the effect of copper and zinc deficiency on its activity
The SOD activity in Zn-deficient plants could be partly restored to the level of Zn/Zn-sufficient fronds by adding Zn2+ to the enzyme assay solution.
Micronutrient deficiency changes activities of superoxide dismutase and ascorbate peroxidase in tobacco plants
Abstract The effects of copper (Cu), zinc (Zn), and manganese (Mn) deficiencies on the activities of Superoxide dismutase (SOD) and ascorbate peroxidase (APx) were investigated in seedlings of