We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Combined Effects of Salinity and Iron Availability on Growth, Gas Exchange, and Antioxidant Status of Foeniculum vulgare.
- Authors
Wasli, H.; Ben Mansour, R.; Hessini, K.; Abid, C.; Herchi, W.; Cardoso, S. M.; Jelali, N.
- Abstract
The combined effect of NaCl salinity and iron deficiency on biomass production, iron homeostasis, photosynthetic activity and antioxidant status were studied in Foeniculum vulgare: a biannual Apiaceae with pastoral potential. Plants were grown in hydroponic conditions for 21 days under two concentration of iron: 1 (low) or 40 µM Fe3+-EDTA (sufficient), in the absence or presence of 75 mM NaCl. When individually applied, both Fe deficiency and salinity notably restricted shoot and whole dry weight (DW) with a more marked effect under combined stresses. This may linked to a significant decrease in stomatal conductance, CO2 assimilation rate (84%) and transpiration rate (66%). Although, the relatively better tolerance to Fe deficiency combined with salinity could be explained by the capacity of this species to maintain higher root system and root/shoot DW ratio. Salinity has a negative impact on Fe-use efficiency (24%) when combined with a low Fe supply that means that iron is primarly used in shoot sodium (Na+) excretion. Phenolic analysis showed the relevance of caffeic and cinnamic acid derivatives in leaves and roots proving their modulation under D and (D + S) treatments. Antioxidant activities as well as inhibitory capacity towards LOX enzyme were ound to be altered under D and (D + S) conditions as rescued by the lowest IC50 and EC50 values. Overall, F. vulgare constitues a promising model to ameliorate the tolerance of the cultivated fennel species under low Fe soils and/or saline regions.
- Subjects
OXIDANT status; FENNEL; SALINITY; IRON in the body; CINNAMIC acid derivatives; ETHYLENEDIAMINETETRAACETIC acid; HORDEUM
- Publication
Russian Journal of Plant Physiology, 2024, Vol 71, Issue 1, p1
- ISSN
1021-4437
- Publication type
Article
- DOI
10.1134/S1021443723602392