Effects of short term iron citrate treatments at different pH values on roots of iron-deficient cucumber: A Mössbauer analysis

Fodor, Ferenc; Kovács, Krisztina; Czech, Viktória; Solti, Ádám; Tóth, Brigitta; Lévai, László; Bóka, Károly; Vértes, A.

doi:10.1016/j.jplph.2012.04.012

Cited by 11 publications

(5 citation statements)

References 29 publications

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“…5). Moreover, the limited impact of soil EC on Fe 2+ and Zn 2+ contents supports the idea that soil pH is not responsible for growth reduction, because bicarbonate and high pH often cause the deficiency of these minerals (Hajiboland et al 2003;Fodor et al 2012). Taken together, our results suggest that plant growth impairment in high EC soils is not attributed to ion imbalance.…”

Section: Disclosure Of Potential Conflicts Of Interestsupporting

confidence: 85%

Effect of salinity on the cotton cultivation and introduction of Amaranthaceae halophytes in the Yellow River Delta, China.

Yamada

2020

agriRxiv

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Cotton is a main cash crop in the Yellow River Delta in China. Although cotton is known for its high salt tolerance, cotton yield is severely affected by excessive salt accumulation in soil. A large amount of the Yellow River water is introduced annually to leach surface salts; however, it has limited effects due to poor soil physical quality. In this study, we aimed to investigate the impact of soil salinity on cotton growth and the viability of Amaranthaceae halophytes as alternative crops. Cotton and Amaranthaceae plants, including Suaeda salsa, Kochia scoparia, swiss chard, table beets and spinach, were planted in a large field in the Yellow River Delta that had spatial differentiation in terms of soil electrical conductivity (EC). Our analysis on soil revealed that Na+ was the major cause of high EC; however, soil alkalization was not observed in highly salinized areas. Cotton biomass showed a strong negative correlation with soil EC. Although all tested Amaranthaceae plants also decreased biomass in high EC areas, this effect was clearly less pronounced in S. salsa and K. scoparia. To our surprise, levels of major (K+, Ca2+ and Mg2+) or minor (Fe2+, Mn2+, Zn2+ and Cu2+) essential elements were not significantly affected by soil EC in all plant species, suggesting that ion imbalance was not the main factor of growth reduction. All Amaranthaceae halophytes absorbed more Na+ but less Ca2+ than cotton, thus it would be possible that Amaranthaceae plants function better than cotton in terms of maintaining soil quality.

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Section: Disclosure Of Potential Conflicts Of Interestsupporting

confidence: 85%

Effect of salinity on the cotton cultivation and introduction of Amaranthaceae halophytes in the Yellow River Delta, China.

Yamada

2020

agriRxiv

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“…Iron availability and uptake in plants is strongly affected by pH (Jeong and Connolly, 2009; Zhang et al, 2013). Iron is commonly acquired by the reduction of Fe(III)‐chelates in root cell membranes by the enzyme ferric chelate reductase (Jeong and Connolly, 2009), and in several plant species ferric chelate reductase activity has been found to strongly decrease with increasing pH (Mengel, 1994; Fodor et al, 2012). Microscopic analyses of Fe distribution in roots of cucumber have also revealed a significant reduction in the radial mobility of Fe at high pH (Fodor et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

“…Iron is commonly acquired by the reduction of Fe(III)‐chelates in root cell membranes by the enzyme ferric chelate reductase (Jeong and Connolly, 2009), and in several plant species ferric chelate reductase activity has been found to strongly decrease with increasing pH (Mengel, 1994; Fodor et al, 2012). Microscopic analyses of Fe distribution in roots of cucumber have also revealed a significant reduction in the radial mobility of Fe at high pH (Fodor et al, 2012). Furthermore, pH of the nutrient solution can also affect the expression levels of several genes involved in the uptake and homeostasis of Fe (Zhao and Ling, 2007).…”

Section: Discussionmentioning

confidence: 99%

Responses of Rat Root (Acorus americanusRaf.) Plants to Salinity and pH Conditions

et al. 2014

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Growth and physiological parameters were examined in rat root ( Raf.) plants grown under controlled environment conditions in hydroponics and subjected to different pH and salinity treatments to determine whether these environmental factors may contribute to poor establishment of in oil sands constructed wetlands. When plants were subjected to a root zone pH ranging from 6.0 to 9.5, the plants that were growing at pH 7.0 showed the highest relative growth rates and chlorophyll concentrations compared with lower and higher pH levels. The greatest inhibition of growth occurred at pH ranging from 8.0 to 9.5. High pH also triggered significant reductions in tissue concentrations of N, P, and microelements, whereas the concentrations of Mg increased at pH >8. When NaCl (25, 50, and 100 mmol L) was added to the nutrient solution at pH 7.0 and 8.5, higher mortality and greater tissue concentrations of Na and Cl were measured in plants growing at pH 8.5 compared with pH 7.0. The results show that plants growing at the optimum pH of 7.0 can better tolerate salinity compared with plants exposed to high root zone pH. Both pH and salinity may present important environmental constraints to growth and establishment of plants in oil sands constructed wetlands.

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“…This is a common problem in sensitive crops grown in calcareous soils because the Fe uptake by the plant is prevented under these conditions . Iron chlorosis harms several physiological processes such as photosynthesis, chlorophyll biosynthesis, respiration, and enzymatic activities . Dicotyledonous and non‐graminaceous monocotyledonous plants have developed a Fe‐uptake strategy named Strategy I, inducing rhizosphere acidification followed by the reduction of Fe 3+ to Fe 2+ from membrane‐bound enzyme ferric‐chelate reductase .…”

Section: Introductionmentioning

confidence: 99%

Effect of Fe:ligand ratios on hydroponic conditions and calcareous soil in Solanum lycopersicum L. and Glycine max L. fertilized with heptagluconate and gluconate

et al. 2019

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BACKGROUND: The environmental risk from the application of synthetic chelates has led to the use of biodegradable complexes to correct Fe deficiency in plants. In this article, the Fe oxidation state, the Fe:ligand ratio, and the molecular weight distribution for heptagluconate (G7) and gluconate (G6) are considered as key factors for the efficacy of complexes as fertilizers. Complexes with different Fe:ligand ratios were prepared and analyzed by gel filtration chromatography (GFC). The ability of Fe:ligand ratios to provide Fe to tomato in hydroponics and soybean in calcareous soil was tested and compared with synthetic chelates (Fe 3+ :HBED and Fe 3+ :EDTA). RESULTS: G7 presented greater capacity to complex both Fe(II) and Fe(III) than G6, but the Fe(II) complexes exhibited poor stability at pH 9 and oxidation in solution.Gel filtration chromatography demonstrated the polynuclear nature of the Fe 3+ :G7 at various ratios. The effectiveness of the Fe fertilizers depend on the Fe 3+ :ligand ratio and the ligand type, the Fe 3+ :G7 (1:1 and 1:2) being the most effective. Fe 3+ :G7 (1:1) also presented a better response for the uptake of other micronutrients. CONCLUSION: Fe 3+ :G7 molar ratios have been shown to be critical for plant Fe uptake under hydroponic conditions and with calcareous soil. Thus, the Fe 3+ :G7 at equimolar ratio and 1:2 molar ratio can be an environmentally friendly alternative to less degradable synthetic chelates to correct Fe chlorosis in strategy I plants.

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Effects of short term iron citrate treatments at different pH values on roots of iron-deficient cucumber: A Mössbauer analysis

Cited by 11 publications

References 29 publications

Effect of salinity on the cotton cultivation and introduction of Amaranthaceae halophytes in the Yellow River Delta, China.

Effect of salinity on the cotton cultivation and introduction of Amaranthaceae halophytes in the Yellow River Delta, China.

Responses of Rat Root (Acorus americanusRaf.) Plants to Salinity and pH Conditions

Effect of Fe:ligand ratios on hydroponic conditions and calcareous soil in Solanum lycopersicum L. and Glycine max L. fertilized with heptagluconate and gluconate

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