Iron‐induced Oxygen Radical Metabolism in Waterlogged Plants

Hendry, G. A. F.; Brocklebank, K. Jane

doi:10.1111/j.1469-8137.1985.tb02826.x

Cited by 96 publications

(45 citation statements)

References 30 publications

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“…germanica is a dryland plant, probably originating from the Mediterranean region, and may, in flooded conditions, show an enhanced uptake of iron which might affect the plant deleteriously in the manner outlined above, as suggested by Hendry and Brocklebank (1985). In our experimental conditions this danger is excluded, but if some intracellular damage does occur, ferrous iron might be present and start off reactions which result in the generation of significant amounts of hydrogen peroxide.…”

Section: Discussionmentioning

confidence: 91%

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Catalase Activity and Post-anoxic Injury in Monocotyledonous Species

1987

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Mont, L. S., Braendle, R. and Crawford, R. M. M. 1987. Catalase activity and post-anoxic injury in monocotyledonous species.-J. exp. Bot. 38: 233-246. Three anoxia-intolerant species, Glyceria maxima, Juncus effusus and Iris germanica (var. Quechei), and three anoxia-tolerant species Schoenoplectus lacustris, Acorus calamus and Iris pseuaacorus were chosen for investigation. Rhizomes of anoxia-intolerant species show increased catalase activities when returned to air after periods of prolonged anoxia. Levels of catalase remained fairly constant in anoxia-tolerant species under the same conditions. In the anoxia intolerant G. maxima, the postanoxic increase in catalase activity was reduced by circulating the anaerobic atmosphere. This treatment also reduced the ethanol content of the tissue under incubation, and increased the survival of the rhizomes as seen in their ability to resume growth in the post-anoxic phase. Exposure of anaerobic G. maxima rhizomes to ethanol vapour increased post-anoxic levels of catalase activity and when this produced a 5-fold increase always resulted in death of the rhizomes. Acetaldehyde vapour applied in the same way gave rise to increases in catalase activity followed by rapid death of the rhizomes.It is suggested that post-anoxic oxidation of anaerobically accumulated ethanol may result in a surge of acetaldehyde production, which could exert a toxic effect on the recovering tissues. The possible role of catalase in an ethanol-oxidation reaction, which is well documented in animals, is discussed in the light of the association between the natural accumulation of large concentrations of ethanol and subsequent post-anoxic death in some plant tissues.

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Section: Discussionmentioning

confidence: 91%

“…Superoxide dismutase (Hendry and Brocklebank, 1985) Fe (Halliwell and Gutteridge, 1984) Fesalt catalyst (Halliwell and Gutteridge, 1985).…”

Section: Discussionmentioning

confidence: 99%

Catalase Activity and Post-anoxic Injury in Monocotyledonous Species

1987

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“…During exposure of flooded plants to O #, oxidation of Fe(II) leads to production of O # d − which is suggested as a cause of flooding damage to plants (Hendry & Brocklebank, 1985 ;Hendry, 1993 ;Neue et al, 1998). Thongbai et al (1999) studied the generation of free radicals in rice plants growing in an Fe-toxic soil and showed that post-anoxic injury in rice plants is related to Fe-induced production of free radicals measured by electron paramagnetic resonance spectroscopy.…”

Section: Superoxide-generating Nadph Oxidasementioning

confidence: 99%

Tansley Review No. 111

2000

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Zinc deficiency is one of the most widespread micronutrient deficiencies in plants and causes severe reductions in crop production. There are a number of physiological impairments in Zn-deficient cells causing inhibition of the growth, differentiation and development of plants. Increasing evidence indicates that oxidative damage to critical cell compounds resulting from attack by reactive O # species (ROS) is the basis of disturbances in plant growth caused by Zn deficiency. Zinc interferes with membrane-bound NADPH oxidase producing ROS. In Zn-deficient plants the iron concentration increases, which potentiates the production of free radicals. The Zn nutritional status of plants influences photooxidative damage to chloroplasts, catalysed by ROS. Zinc-deficient leaves are highly light-sensitive, rapidly becoming chlorotic and necrotic when exposed to high light intensity. Zinc plays critical roles in the defence system of cells against ROS, and thus represents an excellent protective agent against the oxidation of several vital cell components such as membrane lipids and proteins, chlorophyll, SH-containing enzymes and DNA. The cysteine, histidine and glutamate or aspartate residues represent the most critical Znbinding sites in enzymes, DNA-binding proteins (Zn-finger proteins) and membrane proteins. In addition, animal studies have shown that Zn is involved in inhibition of apoptosis (programmed cell death) which is preceded by DNA and membrane damage through reactions with ROS.

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“…Auxin and gibberellin are mainly responsible for the cell elongation leading to the increase of plant height (Rayle and Cleland 1992;Yang, Davies, and Reid 1996). Although information about the direct role of iron in the plant cell elongation is limited, iron might play important role in plant elongation as it is involved in many metabolic processes of plant (Hendry and Rocklebank 1985;Kampfenkel, Van Montagu, and Inze 1995;Vert et al 2002), and as it is a prosthetic group of many enzymes (Janneke and Stéphane 2005;Knaff 2004). …”

Section: Effect Of Chelating Ligands On Height and Fresh Biomass Prodmentioning

confidence: 99%

“…It might be due to photosynthesis in leaves of green plants. Green plants translocate most of the iron to the leaves to perform photosynthesis, in which many metabolic processes are activated by iron (Briat et al 1995;Hendry and Rocklebank 1985;Kampfenkel, Van Montagu, and Inze 1995;Prescott and John 1996;Somers and Shive 1942), and iron itself is a prosthetic group of many enzymes between 7 and 10. Biomass productions of radish were almost constant in the pH range of 7-9 in the nutrient medium.…”

Section: Chemicalsmentioning

confidence: 99%