Varied tolerance to NaCl salinity is related to biochemical changes in two contrasting lettuce genotypes

How Salt Stress Represses the Biosynthesis of Marrubiin and Disturbs the Antioxidant Activity of Marrubium Vulgare L

“…) and could result from an antagonistic effect between Na , and Zn 2+ in the other part. In the same way, [36] reported that salinity induced a strong increase of Na + content in NaCl-tolerant cell lines. Consequently, the total charges must be balanced in the cells by the decrease of the others elements.…”

Verte and Romaine lettuce varieties (Lactuca sativa) show differential responses to high NaCl concentrations

“…In two recent studies on contrasting lettuce varieties (Verte and Romaine), we documented variations in physiological and biochemical responses to moderate levels of NaCl (100 mM) or iso-osmotic Na 2 SO 4 (Mahmoudi et al, 2010(Mahmoudi et al, , 2011. Here, we extended these studies by exposing these two varieties to higher levels of NaCl for an extended period of time and by conducting a more detailed investigation on their individual rather than total antioxidant phytochemicals, including carotenoids, phenolic acids, and flavonoids.…”

“…In two previous studies, we characterized two contrasting lettuce varieties, Romaine and Verte, for their physiological and biochemical responses to NaCl stress, including leaf chlorophyll, malonaldehyde, proline, total carotenoids, flavonoids, phenolic acids, and polyphenolics, as well as root lignin (Mahmoudi et al, 2010(Mahmoudi et al, , 2011. We showed that the greater resistance of Verte to 100 mM NaCl relative to Romaine at the seedling stage was related to the more restricted accumulation of total cations and toxic sodium in the roots and enhanced levels of total antioxidative metabolites in root and leaf tissues (Mahmoudi et al, 2011). We also expanded that study to show differences between the varieties in seedling resistance to Na 2 SO 4 (Mahmoudi et al, 2010).…”

Azospirillum improves lettuce growth and transplant under saline conditions

“…In this regard, in several vegetables tolerance to salt at one growth stage is not correlated to tolerance at another one 3. Indeed, Hela et al 17 showed that two different lettuce varieties (Verte and Romaine) could invert their relative tolerance to salt when both plants grow beyond germination and early seedling establishment, i.e. up to 26 DAS.…”