The Salicylic Acid Effect on the Contents of <i>Citrullus lanatus L.</i> Sugar, Protein and Proline under Salinity (NaCl) Stress

Abstract

Plant growth is impressed by biotic and abiotic stress inversely. There are many reports about proteins change level in salinity stress. Leaves fill up more soluble sugar of glucose, fructose and proline with treatment of salicylic acid. In this study, Citrullus lanatus seeds planted in pots containing perlite were put in a growth chamber under controlled conditions of 30 ±2 °Cand 14 ±2 °Ctemperature, 14h lightness and 10h darkness; NaCl concentration of 0,4,8,12 ds/m and salicylic acid concentration of 0,1,2,4 mM were used in the form of factorial experiment in a complete randomized design (CRD). The results demonstrated that increasing of proline and sugars due to osmotic slope in plants lead to increasing of tolerance against dehydrations of leave content and acceleration of plant developments in stress conditions.

Effects of Exogenous Melatonin on the Growth and Physiological Characteristics of Ginkgo biloba L. under Salinity Stress Conditions

“…Low (0.02 mmol•L −1 ) melatonin significantly increased Pro concentration under high (200 mmol•L −1 ) NaCl treatment, while low and medium (0.1 mmol•L −1 ) melatonin decreased Pro concentration under low (50 mmol•L −1 ) NaCl treatment, approximating control levels. This concentrationdependent pattern aligns with previous research on SP concentration by Bano [52], and on SS concentration and Pro concentration by Cheng [53] in camphor pine. This may be due to melatonin's role as a signaling molecule influencing the synthesis of SP and SS [54], which is affected by NaCl stress concentration.…”

Heterologous Expression of MfWRKY7 of Resurrection Plant Myrothamnus flabellifolia Enhances Salt and Drought Tolerance in Arabidopsis

“…Plants can produce osmoregulatory substances, including proline, soluble proteins and soluble sugars, under stress. Proline can serve as an ROS scavenger [ 38 , 39 ], while soluble proteins and soluble sugars mitigate dehydration stress and help maintain the macromolecules structure and function [ 40 ]. In our data, the levels of these three osmoregulatory substances were significantly increased after drought and salinity stresses ( Figure 4 ).…”