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- Title
Mineral elements bioavailability in the halophyte species Suaeda fruticosa.
- Authors
HOUMANI, Hayet; JELALI, Nahida; ABDELLY, Chedly; GHARSALLI, Mohammed
- Abstract
The aim of this work was to investigate the morphological and physiological responses of Suaeda fruticosa to Fe deficiency. For this purpose, seedlings of Suaeda fruticosa were grown under controlled conditions in the presence of iron sufficient (C) or deficient (D) mediums. Plant growth, chlorophyll content, Fe status, rhizosphere acidification and Fe(III)-chelate-reductase activity (FCR) were studied, along with potassium, zinc and copper concentration. Our results showed that Suaeda fruticosa shoot and whole plant biomass production were significantly decreased under Fe deficiency conditions, whereas that of roots was not affected by such constraint when compared to the control. Moreover, Fe deficiency resulted in a significant reduction of chlorophyll and Fe concentration. Interestingly, although grown under Fe deficiency conditions, S. fruticosa plant was able to increase their shoot iron use efficiency (FeUE), to stimulate acidification capacity and FCR activity in their roots. Furthermore, Fe deficiency led to significant decrease of potassium concentration in S. fruticosa roots, while an accumulation of copper was noted. On the contrary, no significant accumulation of zinc was observed. These data suggest that the capacity of S. fruticosa plants to maintain plant growth and to preserve adequate chlorophyll synthesis under iron-limiting conditions is related to its better Fe-use efficiency, in addition to its high acidification and root reducing capacities. This allows us to suggest this species is relatively effective in overcoming Fe deficiency.
- Subjects
PLANT haplotypes; IRON deficiency diseases; PLANT morphology; PLANT physiology research; ACIDIFICATION; CHLOROPHYLL synthesis; PLANTS
- Publication
Journal of Biological Research, 2012, Vol 17, p113
- ISSN
1790-045X
- Publication type
Article