Triacontanol regulates morphological traits and enzymatic activities of salinity affected hot pepper plants

Abstract

Potential role of triacontanol applied as a foliar treatment to ameliorate the adverse effects of salinity on hot pepper plants was evaluated. In this pot experiment, hot pepper plants under 75 mM NaCl stress environment were subjected to foliar application of 25, 50, and 75 µM triacontanol treatments; whereas, untreated plants were taken as control. Salt stress had a significant impact on morphological characteristics, photosynthetic pigments, gas exchange attributes, MDA content, antioxidants activities, electrolytes leakage, vitamin C, soluble protein, and proline contents. All triacontanol treatments significantly mitigated the adversative effects of salinity on hot pepper plants; however, foliar application triacontanol at 75 µM had considerably improved the growth of hot pepper plants in terms of plant height, shoot length, leaf area, plant fresh/dry biomasses by modulating above mentioned physio-biochemical traits. While, improvement in gas exchange properties, chlorophyll, carotenoid contents, increased proline contents coupled with higher SOD and CAT activities were observed in response to 75 µM triacontanol followed by 50 µM triacontanol treatment. MDA and H2O2 contents were decreased significantly in hot pepper plants sprayed with 75 µM triacontanol followed by 50 µM triacontanol foliar treatment. Meanwhile, root and shoot lengths were maximum in 50 µM triacontanol sprayed hot pepper plants along with enhanced APX activity on exposure to salt stress. In crux, exogenous application triacontanol treatments improved hot pepper performance under salinity, however,75 µM triacontanol treatment evidently was more effective in mitigating the lethal impact of saline stress via controlling the ROS generation and increment in antioxidant enzyme activities.

Unravelling the Effect of Triacontanol in Combating Drought Stress by Improving Growth, Productivity, and Physiological Performance in Strawberry Plants

“…In our study, drought stress induced suppression in plant growth parameters in strawberry plants. The decline in plant growth under water deficit stress ( Table 1 , Table 2 , Table 3 and Table 4 ) is likely due to the detrimental osmotic influence of drought stress causing a decrease in photosynthetic pigments and disturbances of transpiration rate and water use efficiency [ 6 , 13 , 19 ]. The drought effects are motivate stomata closure, ionic balance disorder, and reduce photosynthesis, which decrease the plant growth and productivity [ 27 , 28 , 43 ].…”

“…For example, foliar application of TR motivates growth in seedlings of rice [ 12 ]. Foliar application of TR increased plant height, leaf area, and biomass of hot pepper and cucumber plants [ 13 , 14 ]. Applying TR to the seeds or soil decreased the yield of some crops (cucumber, dry bean, carrot, tomato, barley, and radish) [ 15 , 16 ].…”

Interactive Effect of Genotypes and Organic Manures on Phenotypic Attributes of Chickpea (Cicer Arientinum L.)

“…Legumes are considered a dual answer to increase crop productivity and soil quality due to their ability to fix atmospheric nitrogen. Due to legume plants' biological N2 fixation, legume-based cropping methods increase seed yields and enhance soil fertility (Nouri et al, 2021;Sarwar et al, 2021;Sarwar et al, 2022). Organic manures have recently gained popularity due to the growing expense of chemical fertilizers and their incapacity to condition soil.…”

Mechanism of Drought Stress Tolerance in Wheat

“…Fodder and sugar-cultivated crops require adequate moisture in soil and air for their potential growth, lowering the potential of water in the cell in ariel parts of plants such as leaves. The gradual increases in the rate of leaves senescence and drooping, burning, rolling of leaf and delicateness, etiolation, drooping, turgidity, immature falling, and turning into yellowish leaves are the universal indications of drought stress in plants ( Khan et al, 2018;Ruehr et al, 2019;Sarwar et al, 2022;Tahir et al, 2020). Effects of drought on wheat Some basic ecological factors, including an interval of drought, strength and occurrence of drought, characteristics of soil, conditions and stages for growth, and species of plant, strongly affect the degree and time of symptoms related to drought in plants (Ammar et al, 2022;Iqbal et al, 2021;Zoghi et al, 2019).…”