Induction of antioxidant enzymes is involved in the greater effectiveness of a PGPR versus AM fungi with respect to increasing the tolerance of lettuce to severe salt stress

Arbuscular mycorrhizal fungi enhances salinity tolerance ofPanicum turgidumForssk by altering photosynthetic and antioxidant pathways

“…Our results of salinity-induced reduction in uptake of potassium and phosphorous in P. turgidum seedlings corroborate with the findings of Ghazi and Al-Karaki (2000) for tomato and Kohler et al (2009) for lettuce. Increased sodium ion concentration within the root zone has direct influence on the uptake of several essential elements like potassium.…”

“…AMF-inoculated seedlings showed lesser contents of sodium as compared to the control counterparts. Moreover, enhanced uptake of potassium and phosphorous as well as subsequent amelioration of salinity-induced restricted uptake of potassium and phosphorous observed in our study support the findings of Ghazi and Al-Karaki (2000), Kohler et al (2009) and Wu et al (2010). Wu et al (2010) demonstrated that AMF inoculation to salt-stressed citrus plants considerably mitigated the deleterious impact on the uptake of essential elements like phosphorous, potassium and calcium.…”

“…Wu et al (2010) demonstrated that AMF inoculation to salt-stressed citrus plants considerably mitigated the deleterious impact on the uptake of essential elements like phosphorous, potassium and calcium. In lettuce plants subjected to severe salt stress, Kohler et al (2009) also demonstrated that inoculation of AMF contributed significantly to growth maintenance by mediating enhanced uptake of essential mineral elements as compared to the uninoculated counterparts. Greater concentration of Na + in cellular tissue hampers several growth and metabolic processes in plants.…”

“…Increased sodium ion concentration within the root zone has direct influence on the uptake of several essential elements like potassium. Sodium shares antagonistic relationship with potassium (Kohler et al 2009). AMF-inoculated seedlings showed lesser contents of sodium as compared to the control counterparts.…”

Influence of Exopolysaccharide-Producing Bacteria and SiO2 Nanoparticles on Proline Content and Antioxidant Enzyme Activities of Tomato Seedlings (Solanum lycopersicum L.) under Salinity Stress

“…Similarly, Omar et al [53] reported decreased activity of the catalase enzyme in barley seedlings inoculated with Azospirillum. Kohler et al [54] also observed that, under salt stress conditions, there was reduced activity of catalase enzyme in lettuce seedlings inoculated with Pseudomonas bacteria compared to control treatment. In the same vein, studying the use of silicon in reducing the oxidative stresses of wheat, Gong et al [55] stated that silicon could reduce stress-induced damage by increasing catalase activity.…”