Remedy of chlorosis induced by iron deficiency in plants with the fungal siderophore rhizoferrin

Yehuda, Zehava; Shenker, Moshe; Hadar, Yitzhak; Chen, Yona

doi:10.1080/01904160009382160

Cited by 54 publications

(26 citation statements)

References 17 publications

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“…1 and 2). In contrast to rhizoferrin (Yehuda et al 2000), Fe 3+ reduction rates from FeDFOB, either soluble or immobilized, by cucumber plants, were significantly lower than those from FeEDTA and FeEDDHA (Table 2). These results are in accordance with findings by Römheld and Marschner (1983), who measured an approximately 80 times lower Fe-reduction rate of FeDFOB in the roots of chlorotic peanut plants than of the synthetic chelates FeHEDTA, FeEDTA and FeDTPA.…”

Section: Strategy I Response Of Plants To Soluble and Immobilized Mscontrasting

confidence: 61%

“…The K app values of the chelates involved with Fe and other metals present in the solution are considered to be important in determining the extent of the exchange reaction as described by Yehuda et al (2000). Surprisingly, although FeDFOB exhibits a high K app with Fe 3+ at pH 7.3, barley and wheat plants receiving this treatment were as green as plants treated with FeHEDTA (Figs.…”

Section: Strategy IImentioning

confidence: 91%

“…In fact the efficiency of MS as Fe carriers to Strategy I plants depends on the plant species and the specific MS that is used. For example, cucumber plants could efficiently utilize Fe from various MS regardless of their type, hydroxamate, catecholate or mixed (Shenker et al 1992(Shenker et al , 1995Yehuda et al 2000), whereas peanut plants were less efficient in acquiring Fe from FeDFOB or Fepseudobactin (Jurkevitch et al 1988;Bar-Ness et al 1991). Furthermore, growth of pea plants was enhanced by agrobactin (Becker et al 1985b) but inhibited by pseudobactin (Becker et al 1985a).…”

Section: Strategy I Response Of Plants To Soluble and Immobilized Msmentioning

confidence: 96%

“…Chaney (2006, 2007) reported that the best substrates for the ferric chelate reductase activity in moderately Fe-stressed cucumber roots were the weaker Fe(III)-chelates. A more important characteristic of a ligand in determining its efficiency as a mediator in Fe uptake by cucumber, and probably other strategy I plants, is its lower K app with Fe 2+ (Yehuda et al 2000). Using the Fe concentration in the xylem sap as an index of the Fe uptake, Lucena and Chaney (2007) concluded that this process is also dependent on the ability of the chelating agent to complex Fe(II).…”

Section: Strategy I Response Of Plants To Soluble and Immobilized Msmentioning

confidence: 97%

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FeDFOB and FeEDDHA immobilized on Sepharose gels as an Fe sources to plants

2011

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Background and Aims: The idea of immobilizing Fe and the formation of a slow-release fertilizer has been considered in several studies. However, none of the proposed materials were found efficient in correcting Fe deficiency. In the present study immobilization of Fe chelates on a solid matrix, as a first step in the production and supply process, is tested. Methods: The free forms of the siderophores desferrioxamine B (DFOB) and ethylendiaminebis (o-hydroxyphenyl-acetic acid) (EDDHA) were immobilized on p-nitrophenylchloroformate activated Sepharose and tested as Fe source for both strategy I (peanuts and cucumber, Arachis hypogeae L. and Cucumis sativus L., respectively) and strategy II (barley and wheat, Hordeum vulgare L. and Triticum aestivum L., respectively), plants. Plants grown in hydroponic cultures at pH 7.3 were supplied with the immobilized Fe-chelate either free in solution or confined in a dialysis tube with or without EDDHA in the outer solution as a carrier. Results: Cucumber and barley plants were found efficient in acquiring Fe from the immobilized chelates. Conclusions: The effectiveness in utilizing the immobilized Fe-chelate differed among cultivars and was related to the efficiency of the reductases activity or phytosiderophores secretion systems, in Strategy I and Strategy II plants, respectively.

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Section: Strategy I Response Of Plants To Soluble and Immobilized Mscontrasting

confidence: 61%

Section: Strategy IImentioning

confidence: 91%

Section: Strategy I Response Of Plants To Soluble and Immobilized Msmentioning

confidence: 96%

Section: Strategy I Response Of Plants To Soluble and Immobilized Msmentioning

confidence: 97%

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FeDFOB and FeEDDHA immobilized on Sepharose gels as an Fe sources to plants

2011

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“…(c) susceptible to modification by the organism, so that the target nutrient is converted to a bioavailable form. For example, certain membrane-bound enzymes can alter the properties of the metallophore complex by reducing the complexed metal, resulting in a thermodynamically less stable complex (Chaney et al 1972;Yehuda et al 2000).…”

Section: Metallophores and The Uptake Of Metals From Environmental Poolsmentioning

confidence: 99%

Metallophores and Trace Metal Biogeochemistry

et al. 2014

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Trace metal limitation not only affects the biological function of organisms, but also the health of ecosystems and the global cycling of elements. The enzymatic machinery of microbes helps to drive critical biogeochemical cycles at the macroscale, and in many cases, the function of metalloenzyme-mediated processes may be limited by the scarcity of essential trace metals. In response to these nutrient limitations, some organisms employ a strategy of exuding metallophores, biogenic ligands that facilitate the uptake of metal ions. For example, bacterial, fungal, and graminaceous plant species are known to use Fe(III)-binding siderophores for nutrient acquisition, providing the best known and most thoroughly studied example of metallophores. However, recent breakthroughs have suggested or established the role of metallophores in the uptake of several other metallic nutrients. Furthermore, these metallophores may influence environmental trace metal fate and transport beyond nutrient acquisition. These discoveries have resulted in a deeper understanding of trace metal geochemistry and its relationship to the cycling of carbon and nitrogen in natural systems. In this review, we provide an overview of the current state of knowledge on the biogeochemistry of metallophores in trace metal acquisition, and explore established and potential metallophore systems.Electronic supplementary material The online version of this article (

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The Role of the Rhizosphere in Nutrient Use Efficiency in Crops

Marschner

2011

The Molecular and Physiological Basis of Nutrient Use Efficiency in Crops

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Remedy of chlorosis induced by iron deficiency in plants with the fungal siderophore rhizoferrin

Cited by 54 publications

References 17 publications

FeDFOB and FeEDDHA immobilized on Sepharose gels as an Fe sources to plants

FeDFOB and FeEDDHA immobilized on Sepharose gels as an Fe sources to plants

Metallophores and Trace Metal Biogeochemistry

The Role of the Rhizosphere in Nutrient Use Efficiency in Crops

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