Responses of two ecotypes of Medicago ciliaris to direct and bicarbonate-induced iron deficiency conditions

• Autorzy: M'sehli W. , Dell'Orto M. , De Nisi P. , Donnini S. , Abdelly C. , Zocchi G. , Gharsalli M.
• Języki publikacji: EN

Abstrakty

EN

Our study investigates the effect of iron deficiency on morpho-physiological and biochemical parameters of two Medicago ciliaris ecotypes (Mateur TN11.11 and Soliman TN8.7). Iron deficiencywas imposed by making plants grow, either in an iron free or by the addition of CaCO₃/NaHCO₃ to the Hoagland nutrient solution. Our results showed that both true and bicarbonate Fe-deficiency induced the characteristic iron-chlorosis symptoms, although the intensity of the symptoms was ecotype-dependent. This variability in tolerance to iron deficiency was also displayed by other morphological parameters such as root biomass and chlorophyll concentration. Besides, iron chlorosis induced an increase in biochemical parameters: the iron reducing capacity (measured in vivo on root segments and in vitro on plasma membrane enriched vesicles) and rhizosphere acidification by enhancement of H⁺-ATPase activity were more pronounced in Mateur ecotype. These findings suggest that Soliman ecotype was more sensitive than Mateur one to iron chlorosis.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2009
• Tom: 31
• Numer: 4
• Opis fizyczny: p.667-673,fig.,ref.

Twórcy

autor

M'sehli W.

• Laboratorie d'Adaptation des Plantes aux Stress Abiotiques (LAPSA), Centre de Biotechnologie, Technopole de BORJ-CEDRIA (CBBC), B.P. 901, 2050 Hammam-Lif, Tunisia

autor

Dell'Orto M.

• Dipartimento di Produzione Vegetale, Universita di Milano, Via Celoria 2, 20133 Milan, Italy

autor

De Nisi P.

• Dipartimento di Produzione Vegetale, Universita di Milano, Via Celoria 2, 20133 Milan, Italy

autor

Donnini S.

• Dipartimento di Produzione Vegetale, Universita di Milano, Via Celoria 2, 20133 Milan, Italy

autor

Abdelly C.

• Laboratorie d'Adaptation des Plantes aux Stress Abiotiques (LAPSA), Centre de Biotechnologie, Technopole de BORJ-CEDRIA (CBBC), B.P. 901, 2050 Hammam-Lif, Tunisia

autor

Zocchi G.

• Dipartimento di Produzione Vegetale, Universita di Milano, Via Celoria 2, 20133 Milan, Italy

autor

Gharsalli M.

• Laboratorie d'Adaptation des Plantes aux Stress Abiotiques (LAPSA), Centre de Biotechnologie, Technopole de BORJ-CEDRIA (CBBC), B.P. 901, 2050 Hammam-Lif, Tunisia

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