Induction of peroxidase by Fe2+ in detached rice leaves

Peng, Xinxiang; Yu, Xilong; Li, Mingqi; Yamauchi, M.

doi:10.1007/bf00015422

Cited by 10 publications

(8 citation statements)

References 18 publications

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“…This is probably indicated that free radicals were not involved in the induction of POD by Fe 2 + , Cu 2 + or Zn 2 + . Peng et al [15] also reported that Fe 2 + -induced POD in rice leaves was not mediated by free radicals. Furthermore, Foster and Heath [33] found that oxygen toxicity, which is closely related to the action of oxygen free radicals, also could not induce POD activity in maize plants.…”

Section: Resultsmentioning

confidence: 96%

“…Iron toxicity is a nutritional disorder of rice associated with high ferrous iron in flooded soil [13]. Application of excess ferrous iron was found to induce POD activity in rice leaves [14,15]. The isozyme patterns of POD has been shown to be also affected by Zn 2 + , Cd 2 + , Ni 2 + and Cu 2 + [16].…”

Section: Introductionmentioning

confidence: 99%

“…Relatively little is known about the inductive mechanism of POD by metals. Peng et al [15] demonstrated that stimulation of POD activity in rice leaves by iron may be mediated by de novo synthesis of the enzyme at translational level.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced peroxidase activity in rice leaves in response to excess iron, copper and zinc

2000

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Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Enhanced peroxidase activity in rice leaves in response to excess iron, copper and zinc

2000

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“…Fang et al [274] also showed that lipid peroxidation resulting from Fe toxicity was inhibited by free radical scavengers such as mannitol and GSH. Moreover, the differential expression of anti-oxidant enzyme activities (SOD, APX, CAT, GR and DHR) was observed between rice varieties contrasting in tolerance of Fe toxicity [275].…”

Section: Plant Genomics 200mentioning

confidence: 96%

Advances in Plant Tolerance to Abiotic Stresses

Onaga¹,

Wydra²

2016

Plant Genomics

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During the last 50 years, it has been shown that abiotic stresses influence plant growth and crop production greatly, and crop yields have evidently stagnated or decreased in economically important crops, where only high inputs assure high yields. The recent manifesting effects of climate change are considered to have aggravated the negative effects of abiotic stresses on plant productivity. On the other hand, the complexity of plant mechanisms controlling important traits and the limited availability of germplasm for tolerance to certain stresses have restricted genetic advances in major crops for increased yields or for improved other traits. However, some level of success has been achieved in understanding crop tolerance to abiotic stresses; for instance, identification of abscisic acid (ABA) receptors (e.g., ABA-responsive element (ABRE) binding protein/ABRE binding factor (AREB/ABF) transcription factors), and other regulons (e.g., WRKYs, MYB/ MYCs, NACs, HSFs, bZIPs and nuclear factor-Y (NF-Y)), has shown potential promise to improve plant tolerance to abiotic stresses. Apart from these major regulons, studies on the post-transcriptional regulation of stress-responsive genes have provided additional opportunities for addressing the molecular basis of cellular stress responses in plants. This chapter focuses on the progress in the study of plant tolerance to abiotic stresses, and describes the major tolerance pathways and implicated signaling factors that have been identified, so far. To link basic and applied research, genes and proteins that play functional roles in mitigating abiotic stress damage are summarized and discussed.In the past 100 years, conventional breeding ( Figure 2; based on observed variation and controlled mating) approaches have randomly exploited these plant tolerance mechanisms with limited success. Moreover, in vitro induced variations have also shown little progress in the improvement of plants against abiotic stresses. These conventional breeding approaches are limited by the complexity of stress tolerance traits coupled with less genetic Plant Genomics 168 variation exhibited by most crops due to domestication bottlenecks. The recent reports that the cultivated gene pool of major cereal crops, e.g., rice, maize and wheat, has reduced in genetic variation compared to wild relatives [10-12], raises concern, and could probably undermine the current efforts to identify genetic sources of resistance within the cultivated genepools. It is important, therefore, to consider exploring alternative sources of resistance by incorporating modern techniques into traditional breeding strategies to develop stresstolerant crops (Figure 2).Recently, with the support of genomics, targeted genetic studies involving QTL mapping and validation, identification of key regulatory genes, e.g., genes encoding for ABA receptors, developments in transcriptional and post-transcriptional regulation of stress-responsive genes and studies on hormonal interactions during plant response to stress, have provided opp...

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“…Relatively little is known about the inductive mechanism of enzymes by REEs. Peng et al19 demonstrated that stimulation of POD activity in rice leaves by iron may be mediated by de novo synthesis of the enzyme at the transnational level. Chen et al 9 reported that Ln 3+ at low concentration can promote the activation of RuBPcase by replacing Mg 2+ in the RuBPcase active site.…”

mentioning

confidence: 99%

Effect of rare earth elements on peroxidase activity in tea shoots

Wang

Wei

et al. 2003

J Sci Food Agric

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Rare earth microelement fertiliser (REMF) can increase the yield and quality of crops and has been widely applied in Chinese agriculture. However, relatively little is known about the physiological effects of rare earth ions. In this study the effects of REMF on the biomass and peroxidase (POD) activity of tea plants were investigated. The possible inductive mechanism of POD was also analysed. The results showed that REMF could promote POD activity in tea shoots and enhance the tea shoot biomass. The POD protein in tea shoots was found to bind rare earth elements, mainly La, Nd and Ce. It was also proved that La 3+ and Nd 3+ increased POD activity in vitro. The POD activity induced by La 3+ and Nd 3+ is possibly related to partial replacement of the metals in POD by La 3+ and Nd 3+ .

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Induction of peroxidase by Fe2+ in detached rice leaves

Cited by 10 publications

References 18 publications

Enhanced peroxidase activity in rice leaves in response to excess iron, copper and zinc

Enhanced peroxidase activity in rice leaves in response to excess iron, copper and zinc

Advances in Plant Tolerance to Abiotic Stresses

Effect of rare earth elements on peroxidase activity in tea shoots

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