THE EFFECTS OF COMMON AND NANO-ZINC FOLIAR APPLICATION ON THE ALLEVIATION OF SALINITY STRESS IN Rosmarinus officinalis L.

Abstract

Foliar application of micronutrients (both in common and nano-forms) to meet the nutritional demands of plants and even to overcome the stressful environments has gained great attention of agricultural systems. In our experiments, we tried to use the foliar nano-zinc and common zinc sources under salinity conditions and study their effects on some morpho-physiological traits of rosemary (Rosmarinus officinalis) as factorial experiment based on RCBD design. ANOVA results revealed the interaction effects of salinity and zinc foliar application on elemental content (K + , Na + and Zn 2+), as well as essential oil yield of the plants. Carotenoids were influenced by the salinity levels. Soluble sugars content, flavonoids, H 2 O 2 and MDA contents were influenced by individual levels of salinity and zinc foliar applications. Eventually, nano-zinc foliar spray was able to overcome the mild salinity effects on the plant growth and physiological parameters and it could be administered to the production systems and pioneer plant producers.

Exogenous Zinc Forms Counteract NaCl-Induced Damage by Regulating the Antioxidant System, Osmotic Adjustment Substances, and Ions in Canola (Brassica napus L. cv. Pactol) Plants

“…In support of our findings, the reduction in yield attributes under salinity was reported previously by the other investigation (Farouk and Arafa Sally 2018;Mehrabani et al 2018). Low yield ascertained under salinity was probably due to the reduction of assimilating production, and the mobilization of photoassimilates resulted in a decrease in harvesting index (Jacob and Francis 2015), pollen viability, and stigmatic receptivity (Khatun and Flowers 1995).…”

“…These processes include photosynthesis, nutrient homeostasis, ROS accumulation, and hormonal imbalance as it was indicated on some previous studies on other crops (Farouk and Arafa Sally 2018;Carillo et al 2019;Gao et al 2019;Kataria et al 2019;Siddiqui et al 2019;Silva et al 2019). It has been reported that Zn or ZNP promote the growth of several plants under either salinized or non-salinized condition (Haripriya et al 2018;Mehrabani et al 2018;Bala et al 2019;Singh et al 2019); this could be linked to the well-known functions of zinc in CO 2 assimilation. Further exclusively, Zinc as a constituent of carbonic anhydrase (CA), numerous dehydrogenases, and auxin creation could improve the elongation processes (Marschner 2012;Singh et al 2019).…”

“…From this point of view, external zinc supply could mitigate the negative impact of NaCl by inhibiting sodium and/or chloride uptake or translocation (Chrysargyris et al 2018). Also, zinc accelerating IAA accumulation and consequently activating cellular division and enlargement nullify reactive oxygen species (Torabian et al 2016) and restrict excessive Na + and Cl − (Haripriya et al 2018;Mehrabani et al 2018). The superior plant growth with ZNP might be attributable to the mobilization of nutrients in the soil like P in addition to rising in the microbial population in the rhizosphere (Hussein and Abou-Baker 2018;Bala et al 2019).…”

“…It is occupied in the auxin biosynthesis, photosynthesis, carbohydrate and protein biosynthesis, cell division, maintaining cellular membrane stability, sexual fertilization, and productivity, and is consequently associated with photosynthesis and carbohydrates metabolism (Marschner 2012;Wasaya et al, 2017). It has been suggested that zinc application under a high salinity condition was vital for the plant's defense against salinity stress (Haripriya et al 2018;Mehrabani et al 2018). However, just a small part of spray-applied micronutrients can penetrate the plant tissue, with the majority of the sprayed nutrient unusable, mainly due to leaching, photodegradation, and hydrolyzation (Nair et al 2010).…”

New Tricks for Old Guys: Recent Developments in the Chemistry, Biochemistry, Applications and Exploitation of Selected Species from the Lamiaceae Family

“…Again, a recent study on T. vulgaris showed that treatment with abiotic elicitors [152] lead to differential up-regulation of genes involved in thymol/carvacrol biosynthesis with the probable consequent increment of the corresponding metabolites. [172] Rosemary tolerance to the salinity stress after foliar treatments with zinc oxide in common and nano-form was studied by Mehrabani and collaborators: [173] it seems that zinc foliar spray improved flavonoids, total soluble solids and essential oil contents. Salinity as abiotic stress is a permanent major threat to the agriculture industry worldwide and usually associated with reduced growth and productivity of cultivations.…”