Foliar fertilization to control iron chlorosis in pear (Pyrus communis L.) trees

Álvarez‐Fernández, Ana; García-Laviña, P.; Fidalgo, Cátia; Abadı́a, Javier; Abadı́a, Anunciación

doi:10.1023/b:plso.0000047717.97167.d4

Cited by 85 publications

(69 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Second, IDC is primarily an issue of iron availability, not soil level per se. Third, and perhaps the most important is that the economic cost of Fe treatments to control Fe deWciency is very high (Álvarez-Fernández et al 2004). For these reasons, signiWcant eVorts are ongoing to elucidate the plant's responses to iron stress and in planta transport of iron with a long-term goal of developing improved plant genotypes that possess durable tolerance toward IDC, as well as fortifying the iron content of tissue for food and feed end use (Hell and Stephan 2003).…”

Section: Discussionmentioning

confidence: 99%

Molecular and phenotypic characterization of transgenic soybean expressing the Arabidopsis ferric chelate reductase gene, FRO2

Vasconcelos

Eckert

Arahana

et al. 2006

Planta

View full text Add to dashboard Cite

Soybean (Glycine max Merr.) production is reduced under iron-limiting calcareous soils throughout the upper Midwest regions of the US. Like other dicotyledonous plants, soybean responds to iron-limiting environments by induction of an active proton pump, a ferric iron reductase and an iron transporter. Here we demonstrate that heterologous expression of the Arabidopsis thaliana ferric chelate reductase gene, FRO2, in transgenic soybean significantly enhances Fe(+3) reduction in roots and leaves. Root ferric reductase activity was up to tenfold higher in transgenic plants and was not subjected to post-transcriptional regulation. In leaves, reductase activity was threefold higher in the transgenic plants when compared to control. The enhanced ferric reductase activity led to reduced chlorosis, increased chlorophyll concentration and a lessening in biomass loss in the transgenic events between Fe treatments as compared to control plants grown under hydroponics that mimicked Fe-sufficient and Fe-deficient soil environments. However, the data indicate that constitutive FRO2 expression under non-iron stress conditions may lead to a decrease in plant productivity as reflected by reduced biomass accumulation in the transgenic events under non-iron stress conditions. When grown at Fe(III)-EDDHA levels greater than 10 microM, iron concentration in the shoots of transgenic plants was significantly higher than control. The same observation was found in the roots in plants grown at iron levels higher than 32 microM Fe(III)-EDDHA. These results suggest that heterologous expression of an iron chelate reductase in soybean can provide a route to alleviate iron deficiency chlorosis.

show abstract

Section: Discussionmentioning

confidence: 99%

Molecular and phenotypic characterization of transgenic soybean expressing the Arabidopsis ferric chelate reductase gene, FRO2

Vasconcelos

Eckert

Arahana

et al. 2006

Planta

View full text Add to dashboard Cite

show abstract

“…Due to iron starvation, the quantity and quality of crops are dropping and this would lead to a severe damage to the respective economy. Currently, iron mineral salts are used as shoot spraying, and chelating-iron compounds like Fe-EDTA and Fe-EDDHA are applied as soil drenching (Alvarez-Fernandez et al, 2004). Using these methods to compensating the lack of iron depends on an environmental and host plant condition and it should repeated annually.…”

Section: Introductionmentioning

confidence: 99%

Role of Fluorescent Pseudomonads Siderophore to Increase Bean Growth Factors

Omidvari¹,

Sharifi²,

Ahmadzadeh³

et al. 2010

JAS

View full text Add to dashboard Cite

Since the Iranian soils are almost limy, application of Fluorescent pseudomonas have a major potential to provide the microelements needed for crop plants due to their siderophore production ability. In this work three indigenous high siderophore producing strains, a reference strain 7NSK2 and its pyoverdine mutant, MPFM1, were employed. To explore their efficiency, siderophore production was investigated by CAS-agar method. Effect of bacteria inoculation on the shoot and root dry weight increase as well as chlorophyll content of the crop were assayed under greenhouse condition. Furthermore, synergistic effects of bacteria strains and iron chelates, Fe-EDDHA and Fe-EDTA, and zinc sulphate on promotion of common bean plants were estimated. Strain UTPF76 with 20.4 mm halo in CAS-agar medium had the highest siderophore production capability. The results of the greenhouse experiments revealed that three of strains, 7NSK2, UTPF5 and UTPF76 increased the plant growth factors significantly. Addition of iron chelates and zinc sulphate improved bacterial efficacy. Strains MPFM1 and UTPF61 not only did not have positive effect on the plant growth but also in some cases decreased the growth factors. In colonization survey UTPF76 and UTPF5 had the greatest colonization activity. In conclusion, our results showed that indigenous stains have a high potential in biotechnological applications and their industrial application is recommended.

show abstract

“…FeSO 4 sprays (0.5%) corrected deficiency symptoms and increased yields by up to 50% in chickpea (Cicer arietinum L.) cultivars inefficient in Fe utilization under high pH calcareous conditions (Saxena & Sheldrake 1980). Severe Fe deficiency in peas grown in high pH soil was successfully ameliorated by the application of FeSO 4 as foliar spray (Seeliger & Moss 1976;Alvarez-Fernandez et al 2004;Patel et al 2004).…”

Section: Corrections Of Fe Deficiency Chlorosismentioning

confidence: 91%

Chlorosis correction and agronomic biofortification in field peas through foliar application of iron fertilizers under Fe deficiency

Kabir

Paltridge

Stangoulis

2016

Journal of Plant Interactions

View full text Add to dashboard Cite

Foliar fertilization to control iron chlorosis in pear (Pyrus communis L.) trees

Cited by 85 publications

References 25 publications

Molecular and phenotypic characterization of transgenic soybean expressing the Arabidopsis ferric chelate reductase gene, FRO2

Molecular and phenotypic characterization of transgenic soybean expressing the Arabidopsis ferric chelate reductase gene, FRO2

Role of Fluorescent Pseudomonads Siderophore to Increase Bean Growth Factors

Chlorosis correction and agronomic biofortification in field peas through foliar application of iron fertilizers under Fe deficiency

Contact Info

Product

Resources

About