Growth Enhancers to Mitigate Salinity Stress inVicia faba

Physiological effects of Spirulina platensis in salt stressed Vicia faba L. plants

“…as shown in the present study, considerable changes in the photosynthetic activity, pigments content (Chl a+b, carotenoids) and transpiration rate were recorded in salt-stressed bean plants. Such findings are in accord with those of Moussa et al (2016), who stated that harmful effects of salinization on the photosynthetic activity are a result of the decline in Rubisco activity, pigment content, restriction of carbon dioxide assimilation and probably a minimized transpiration rate. Salinity raised the activity of the 4 assayed antioxidant enzymes (SOD, CaT, POD, GPX), MDA and total phenols in V. faba plants indicating that the plants grow under saltstress exert an oxidative defense mechanism to balance the ROS resulted from salinity (ashraf, 2009 andKaye et al, 2011).…”

“…Data showed that, there was a significant decrease in the growth and yield (represented by the weight of one hundred seeds) as a result of salinization. This result corroborates with that of Moussa et al (2016) who reported that salinity stress led to the production of excess reactive oxygen species (ROS) which induced a defect in different physiological and biological processes and caused oxidative stress, lipid peroxidation and ion toxicity (Na + and Cl -), hence it reflected on plant growth and yield. Salt-stress causes a lot of nutritional changes due to the decrease in the absorption and/or stem transportation.…”

“…The recorded rise in the production of antioxidant enzymes and the antioxidant substances (carotenoids and phenols) under the effect of salinity may have a valuable role in scavenging the ROS produced as a result of stress condition (Moussa et al, 2016).…”

“…additionally, salinity leads to increase in respiratory rate, ion toxicity, alteration of plant growth, imbalance in the distribution of elements, instability of membranes as a result of replacing the sodium element instead of calcium (Marschner, 1986). However, salinity decreases the photosynthetic rate (Moussa et al, 2016). It is well known that the accumulation of sodium ions in leaf tissues causes a decrease in the enzymatic activities and protein synthesis which is strongly related to high concentrations of salinity (Tester & Davenport, 2003).…”

Foliar-Applied Potassium Silicate Coupled with Plant Growth-Promoting Rhizobacteria Improves Growth, Physiology, Nutrient Uptake and Productivity of Faba Bean (Vicia faba L.) Irrigated with Saline Water in Salt-Affected Soil

“…Application of PGPR significantly mitigated the harmful impact of NaCl in the soil solution which increased K uptake to leaf tissues, maintained essential nutrients flow from roots to plant leaves and water holding capacity resulted in improvement of the assimilate translocation and biosynthesis as well as osmoregulation and protection of leaf tissues from salinity-induced oxidative stress [ 66 ]. Foliar-applied of K-silicate has a more pronounced ameliorative impact on faba bean plants irrigated with saline water [ 58 ]. Foliar application of K-silicate is considered the source of potassium and silicon elements that plays a vital role in sustaining and improving a plant’s photosynthetic apparatus as a result of enhancing leaves number and area [ 67 ].…”