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| 1 | Iron Mobilization and Mineralogical Alterations Induced by Iron-Deficient Cucumber Plants (Cucumis sativus L.) in a Calcareous Soil显示文摘Dicotyledons cope with ion(Fe) shortage by releasing low-molecular-weight organic compounds into the rhizosphere to mobilize Fe through reduction and complexation mechanisms. The effects induced by these root exudates on soil mineralogy and the connections between Fe mobilization and mineral weathering processes have not been completely clarified. In a batch experiment, we tested two different kinds of organic compounds commonly exuded by Fe-deficient plants, i.e., three organic acids(citrate, malate, and oxalate)and three flavonoids(rutin, quercetin, and genistein), alone or in combination, for their ability to mobilize Fe from a calcareous soil and modify its mineralogy. The effect of root exudates on soil mineralogy was assessed in vivo by cultivating Fe-deficient and Fe-sufficient cucumber plants(Cucumis sativus L.) in a RHIZOtest device. Mineralogical analyses were performed by X-ray powder diffraction. The batch experiment showed that citrate and, particularly, rutin(alone or combined with organic acids or genistein)promoted Fe mobilization from the soil. The combinations of rutin and organic acids modified the soil mineralogy by dissolving the amorphous fractions and promoting the formation of illite. These mineralogical alterations were significantly correlated with the amount of Fe mobilized from the soil. The RHIZOtest experiment revealed a drastic dissolution of amorphous components in the rhizosphere soil of Fe-deficient plants, possibly caused by the intense release of phenolics, amino acids, and organic acids, but without any formation of illite. Both batch and RHIZOtest experiments proved that exudates released by cucumber under Fe deficiency concurred to the rapid modification(on a day-scale) of the mineralogy of a calcareous soil. | Concetta Eliana GATTULLO Youry PII Ignazio ALLEGRETTA Luca MEDICI Stefano CESCO Tanja MIMMO Roberto TERZANO | 2018 | Pedosphere2018，28，1： | 3 |
| 2 | Two plasma membrane H^+-ATPase genes are differentially expressed in iron-deficient cucumber plants 显示文摘 | Santi S Cesco S Varanini Z | 2005 | Plant Physiol Biochem2005，43，： | 1 |
| 3 | Water-extractable humic substances enhance iron deficiency responses by Fe-deficient cucumber plants显示文摘 | Pinton R Cesco S Santi S Agnolon F Varabubu Z | | 0，，： | 1 |
| 4 | Analysis of finter cellular cadmium in root and leaves of bush bean显示文摘 | Leital Nobilmd Cescos | 1996 | J Plant Nutr1996，19，34： | 1 |
| 5 | Is type 2 diabetes an operable intestinal dis- ease? 显示文摘 | Cesco Rumbiao | 2006 | Diabetes Care2006，31，2： | 1 |
| 6 | Analysis of intercellular cadmium forms in roots and leaves of bush bean显示文摘 | Leita L Nobili M De Cesco S | 1996 | J Plant Nutr1996，19，34： | 1 |
| 7 | Analysis of intercellular cadmium forms in roots and leaves of bush bean 显示文摘 | Leita L Nobili M D Cesco S | 1996 | Jour- nal of Plant Nutrition1996，19，3： | 1 |
| 8 | Effect of soil humic substances on sur- face redox activity of oat roots 显示文摘 | Pinton R Cesco S Santi S | 1995 | J Plant Nutr1995，18，10： | 1 |
| 9 | Two plasma membrane H ^+ - ATPase genes are differentially expressed in iron - deficient cucumber plants 显示文摘 | SANTI S CESCO S VARANINI Z | 2005 | Plant Physiol Biochem2005，43，： | 1 |
| 10 | The root--hairless barley mutant brb used as model for assessment of role of root hairs in iron accumulation显示文摘 | Zuchi S Cesco S Gottardi S | 2012 | Plant Physiol Bi- ochemistry2012，49，50： | 1 |
| 11 | Analysis of finter cellular cadmium in root and leaves of bush bean显示文摘 | Leital Nobilmd Cescos | 1996 | J Plant Nutr1996，19，34： | 1 |
| 12 | Analysis of intercellular cadmium in roots and leaves of bush bean显示文摘 | Leita L Nobili M D Cesco S | | 0，，34： | 1 |
| 13 | Solubilization of iron by water - extractable humic substances 显示文摘 | Cesco S Rimheld V Varanini Z | 2000 | Journal of Plant Nutrition and Soil Science2000，163，3： | 1 |
| 14 | Levels of aspartate aminotransferase(AST)in saliva of patients with different periodontal conditions显示文摘 | Cesco Rde T Ito IY de Albuquerque RF Jr | 2003 | J Clin Periodontol2003，30，8： | 1 |
| 15 | Plasma membrane H+-ATPase in maize roots induced for NO-3 uptake显示文摘 | Santi S Cesco S Pinto R | 1995 | Plant Physiology1995，109，4： | 1 |
| 16 | Analysis of intercellular cadmium forms in roots and leaves of bush bean显示文摘 | LEITA L NOBILI M D CESCO S | 1996 | J Plant Nutri1996，19，34： | 1 |
| 17 | Analysis of finter cellular cadmium in root and leaves of bush bean显示文摘 | Leital L De Nobili M Cescos S | 1996 | Plant Nutr1996，19，34： | 1 |
| 18 | Improving recom-mendation effectiveness:adapting a dialogue strategy in online travel planning 显示文摘 | Mahmood Tariq Ricci Fran Cesco | 2009 | Information Technology & Tourism2009，11，4： | 1 |
| 19 | Common carotid artery intim a-media thickness determ inan ts in a popu lation study 显示文摘 | Edoardo V Maria CR Fran cesco P | 2007 | Ultrasound Med2007，26，4： | 1 |
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