scholarly journals Improving Drought Tolerance in Tobacco By Application of Salicylic Acid

2021 ◽  
Author(s):  
Yuqing Feng ◽  
Yuanyuan Zhao ◽  
Yafei Li ◽  
Jun Zhou ◽  
Hongzhi Shi
Keyword(s):  
Salicylic Acid ◽  
Drought Stress ◽  
Chlorophyll Metabolism ◽  
Kegg Analysis ◽  
Physiological Processes ◽  
Yield And Quality ◽  
Tobacco Seedlings ◽  
Mda Content ◽  
Pigment Biosynthesis ◽  
Antioxidant Enzymes Activities

Abstract Drought causes not only the decrease of tobacco yield and quality, but also the lowering of net photosynthetic rate, leading to reactive oxygen species accumulation and even the death of plants. Salicylic Acid is involved in regulating many plant physiological processes and has increasingly been applied to improve tolerance in plants exposed to drought stress. To explore the regulating mechanism of SA, flue-cured tobacco K326 was used in the hydroponic experiments to design PEG drought stress. The photosynthetic characteristics, antioxidant enzymes activities and osmotic regulatory substances contents of tobacco seedlings under drought stress were investigated after 0.3 mmol L-1 SA treatment. Transcriptome sequencing and GO/KEGG analysis were also performed. The main results showed that SA-applied greatly increased the activities of SOD, POD, CAT activity, Pn, proline and soluble protein by 44.27%, 50.18%, 26.23%, 45.74%, 34.67% and 24.91% while reduced the MDA content by 23.89%. GO and KEGG analysis showed that SA treatment was able to up-regulate the genes involved in photosynthesis, carbon metabolism, porphyrin and chlorophyll metabolism, photosynthesis-antenna proteins. The conclusion is that SA application would effectively improve the ability of pigment biosynthesis and photosystem repair of tobacco under drought conditions, thus enhance the photosynthesis, reduce the accumulation of ROS and increase drought resistance, which would provide a measure for alleviating the damage of tobacco caused by drought stress.

Foliar application and seed priming of salicylic acid affect growth, fruit yield, and quality of grape tomato under drought stress

2021 ◽  
Vol 280 ◽  
pp. 109904
Author(s):  
Remi Chakma ◽  
Arindam Biswas ◽  
Pantamit Saekong ◽  
Hayat Ullah ◽  
Avishek Datta
Keyword(s):  
Salicylic Acid ◽  
Drought Stress ◽  
Foliar Application ◽  
Seed Priming ◽  
Fruit Yield ◽  
Yield And Quality

scholarly journals Effect of Foliar Application with Salicylic Acid on Some Morphological and Physiological Characteristics of Sesame (Sesamum indicum L.) Under Drought Stress

2016 ◽  
Vol 49 (4) ◽  
pp. 35-42 ◽  
Author(s):  
A. Khatiby ◽  
F. Vazin ◽  
M. Hassanzadeh ◽  
A. Ahmadi Shadmehri
Keyword(s):  
Salicylic Acid ◽  
Water Stress ◽  
Drought Stress ◽  
Foliar Application ◽  
Morphological Characteristics ◽  
Interactive Effects ◽  
Area Index ◽  
Physiological Processes ◽  
Significant Difference ◽  
Four Levels

Abstract Drought is an important factor that could restrict plants growth and productivity through several biological and physiological processes. Salicylic acid (SA) has a key role in many physiological processes of plants and stimulate specific responses against various stresses biotic and abiotic, in some of plants. In order to evaluate the effect of foliar application by salicylic acid (SA) under drought stress on some morphological characteristics sesame, a split-plot experiment with a completely random design with three replications was performed. There were three levels of irrigation: control (normal irrigations), water stress at flowering stage and water stress at seed production stage, as main plot and sub plot consisting of four levels of the foliar application of salicylic acid: 0 (control), 1, 1.5 and 2.25 mM. Results indicated that the effects of water stress on traits, such as plant height, height of first capsule from soil surface, number of branches, number of capsules per plant showed significant difference at a level of 1%, while on the number of seeds per capsule, seed weight, leaf area index, biological yield, grain yield sesame, without significant difference indicated. Foliar application with salicylic acid was not so significant (P< 0.05) at different concentrations on measured traits, as well as interactive effects between drought stress and different amounts of salicylic acid, without significant difference observed.

scholarly journals EXOGENOUS APPLICATION OF SALICYLIC ACID AT DIFFERENT PLANT GROWTH STAGES IMPROVES PHYSIOLOGICAL PROCESSES IN MARIGOLD (Tagetes erecta L.)

2019 ◽  
Vol 56 (03) ◽  
pp. 541-548
Author(s):  
Syed Mohsin Abbas
Keyword(s):  
Salicylic Acid ◽  
Drought Stress ◽  
Drought Tolerance ◽  
Plant Growth ◽  
Tagetes Erecta ◽  
Growth Stages ◽  
Reproductive Growth ◽  
Exogenous Application ◽  
Physiological Processes ◽  
Tagetes Erecta L

Marigold (Tagetes erecta L.) is a famous flowering plant in the world which has medicinal and industrial values. In Pakistan, it is an important floricultural crop and used widely as bedding plant. Pakistan is facing water shortage, which is affecting crops growth and productivity including marigold badly. Drought stress reduces plant growth, physiological and biochemical processes and flower yield in marigold. Salicylic acid (SA) is a phytohormone and its exogenous application is an effective approach to support plant during drought stress and mitigate its harmful impacts. Present study was planned to evaluate the effect of exogenous salicylic acid application on growth response and drought tolerance potential of marigold. For this purpose, a pot experiment was conducted in rain out shelter with four treatments of SA i.e., no SA application, SA foliar @ 100 mg L-1 application at vegetative growth, reproductive growth and at vegetative plus reproductive growth stages, under normal irrigation as well as under drought stress conditions were imposed. Drought stress was applied by skipping every alternate irrigation. The results showed that SA application at reproductive growth stage of marigold improved plant growth by improving its physiological processes during drought stress. It was concluded that exogenous application of SA, not only increased bioproductivity of marigold plants but also ameliorated the negative impacts of drought stress by enhancing drought tolerance potential in plants.

Penconazole and calcium ameliorate drought stress in canola by upregulating the antioxidative enzymes

2020 ◽  
Vol 47 (9) ◽  
pp. 825 ◽  
Author(s):  
Maryam Rezayian ◽  
Vahid Niknam ◽  
Hassan Ebrahimzadeh
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Drought Stress ◽  
Drought Tolerance ◽  
Antioxidative Enzymes ◽  
Proline Content ◽  
Fresh Weight ◽  
Negative Effects ◽  
Mda Content ◽  
Effects Of Drought

The aim of this research was to gauge the alternations in the lipid peroxidation and antioxidative enzyme activity in two cultivars (cv. RGS003 and cv. Sarigol) of canola under drought stress and drought tolerance amelioration by penconazole (PEN) and calcium (Ca). Plants were treated with different polyethylene glycol (PEG) concentrations (0, 5, 10 and 15%) without or with PEN (15 mg L–1) and Ca (15 mM). The Ca treatment prevented the negative effects of drought on fresh weight (FW) in RGS003 and Sarigol at 5 and 15% PEG respectively. Ca and PEN/Ca treatments caused significant induction in the proline content in Sarigol at 15% PEG; the latter treatment was accompanied by higher glycine betaine (GB), lower malondialdehyde (MDA) and growth recovery. Hydrogen peroxide (HO2) content in Sarigol was proportional to the severity of drought stress and all PEN, Ca and PEN/Ca treatments significantly reduced the H2O2 content. PEN and PEN/Ca caused alleviation of the drought-induced oxidative stress in RGS003. RGS003 cultivar exhibited significantly higher antioxidative enzymes activity at most levels of drought, which could lead to its drought tolerance and lower MDA content. In contrast to that of Sarigol, the activity of catalase and superoxide dismutase (SOD) increased with Ca and PEN/Ca treatments in RGS003 under low stress. The application of PEN and Ca induced significantly P5CS and SOD expression in RGS003 under drought stress after 24 h. Overall, these data demonstrated that PEN and Ca have the ability to enhance the tolerance against the drought stress in canola plants.

scholarly journals Chemical composition and antimicrobial activities of essential oils of Ruta graveolens plants treated with salicylic acid under drought stress conditions

2018 ◽  
Vol 4 (2) ◽  
pp. 254-264 ◽  
Author(s):  
Eman Zekry Attia ◽  
Rehab Mahmoud Abd El-Baky ◽  
Samar Yehia Desoukey ◽  
Mahmoud Abd El Hakeem Mohamed ◽  
Mokhtar Mohamed Bishr ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Drought Stress ◽  
Chemical Composition ◽  
Essential Oils ◽  
Antimicrobial Activities ◽  
Stress Conditions ◽  
Ruta Graveolens

scholarly journals Effect of Salicylic Acid and Abscisic Acid on Drought Stress of Waxy Corn

2014 ◽  
Vol 59 (1) ◽  
pp. 54-58 ◽  
Author(s):  
Youngho Seo ◽  
Kijin Park ◽  
Eunha Chang ◽  
Sihwan Ryu ◽  
Jongyeol Park ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Abscisic Acid ◽  
Drought Stress ◽  
Waxy Corn

scholarly journals Silencing of The Slzf-31 Gene Decreases The Salt Stress Tolerance And Drought Tolerance Of Tomato

2021 ◽  
Author(s):  
Tong Pei ◽  
Yufang Bao ◽  
Tairu Wu ◽  
Ziyu Wang ◽  
Yue Wang ◽  
...  
Keyword(s):  
Salt Stress ◽  
Drought Stress ◽  
Virus Induced Gene Silencing ◽  
Chlorophyll Fluorescence Parameters ◽  
Tomato Plants ◽  
Drought And Salt Stress ◽  
Stem Bending ◽  
Physiological Indexes ◽  
Mda Content ◽  
Aba Content

Abstract The SlZF-31 gene is a member of the tomato C2H2 transcription factor family. Previous studies have shown that SlZF-31 gene expression is upregulated under drought stress and salt stress, but the specific function of this gene in tomato plants in response to these two kinds of stress is still unclear. To further explore the function of the SlZF-31 gene in tomato under drought stress and salt stress, we employed the virus-induced gene silencing (VIGS) method to reduce the expression of the SlZF-31 gene in tomato. The results showed that TRV2-SlZF-31 plants had higher levels of wilt and stem bending than CK and CK-TRV2 plants under drought and salt stress. The ABA content of TRV2-SlZF-31 plants were lower than those of CK and CK-TRV2 plants. The analysis of physiological indexes showed that the SOD and POD activity and the PRO content of TRV2-SlZF-31 plants were lower than those of CK and CK-TRV2 plants, while the MDA content of TRV2-SLlZF-31 plants was higher than those of CK and CK-TRV2 plants. The accumulation of H2O2 and O2- in TRV2-SlZF-31 plants was greater than those in CK and CK-TRV2 plants. The values of the chlorophyll fluorescence parameters (ΦII and qL) of TRV2-SlZF-31 plants were significantly lower than those of CK and CK-TRV2 plants. These results showed that the silencing of the SlZF-31 gene reduces the drought resistance and salt tolerance of tomato.

scholarly journals Elma Bitkisi (Malus domestica L.)’nde Foliar Uygulanan Salisilik Asitin Donmaya Karşı Etkileri

2015 ◽  
Vol 3 (5) ◽  
pp. 221 ◽  
Author(s):  
Bengü Türkyılmaz Ünal ◽  
Oğuzhan Mentiş ◽  
Ethem Akyol
Keyword(s):  
Superoxide Dismutase ◽  
Salicylic Acid ◽  
Malus Domestica ◽  
Foliar Application ◽  
Photosynthetic Pigment ◽  
Freezing Stress ◽  
Control Group ◽  
Yield And Quality ◽  
Physiological And Biochemical

In our study we aim to increase frost resistance and improve the yield and quality of apple is important in Turkey and world economy. Phenological and morphological observations, physiological and biochemical analyzes were carried out in apple (Malus domestica L.) plants. It was studied to determine the effects of foliar Salicylic acid (0, 500 ppm/plant and 1000 ppm/plant) on adaptation of this plant when exposed to freezing stress, the quality and yield. Leaf photosynthetic pigment contents, total protein amount, proline amount, superoxide dismutase and peroxidase enzymatic activities were measured. The study planned by random experimental design and statistical analysis of data with SPSS program (LSD test) were made. It was determined that fruit and shoot numbers were increased in samples exposed to 500 ppm salicylic acid and while fruit weights were increased in samples exposed to 500 ppm and 1000 ppm salicylic acid compared to the control. Also, colour of plants were darkened. Chla, chlb, total chl, proline, superoxide dismutase and peroxidase amounts were increased significantly compared to the control group. Increases occured in the carotenoid and the protein amounts are not significant statistically. In the light of obtained data, foliar application of salicylic acid were found to reduce the effects of freezing stress and to increase the yield and quality of apple plants.

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