Stimulation of Short-term Plant Growth by Glycerol Applied as Foliar Sprays and Drenches under Greenhouse Conditions

Tisserat, Brent; Stuff, Amy

doi:10.21273/hortsci.46.12.1650

Cited by 19 publications

(11 citation statements)

References 28 publications

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“…Glycerol, as a sugar alcohol, is a simple triol compound, aodorless, colorless, viscous liquid that is sweet tasting and non-toxic making it an ideal "environmentally friendly" agricultural chemical (Tisserat and Stuff, 2011). Glycerol, also called glycerine, is generally obtained from plant and animal sources where it occurs in triglycerides, esters of glycerol with long-chain carboxylic acids (Zhang et al, 2015).…”

Section: )mentioning

confidence: 99%

Role of compost, biochar and sugar alcohols in raising the maize tolerance to water deficit conditions

elsherpiny¹

2023

Egypt.J. Soil Sci.

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OW, people in Egypt are under the water poverty limit a long time ago due to climate change and the shortage of water resources. These conditions hamper agricultural development in Egypt. Thus, a practical solution must be undertaken for confronting the water scarcity that hindered agricultural development in Egypt. So, two field trials were executed to assess three water levels of full irrigation [8000 m 3 ha -1 as traditional full irrigation (TFI) treatment followed in the studied area (100% of TFI), 6000 m 3 ha -1 (75% of TFI) and 4000 m 3 ha -1 (50 % of TFI)] as main plots. While different soil conditioners [without (control), biochar (at rate of 24 Mg ha -1 ) and plant compost (at rate of 24 Mg ha -1 ) in addition to both of them as combined treatment (at rate of 12 Mg ha -1 for each conditioner),1.0 Mg ʺmega gramʺ=10 6 g i.e., metric ton] were evaluated as subplots. Also, the foliar application of glycerol and sorbitol (0.0 and 500 mM L -1 ) represented the sub-sub plots. Maize was used as an experimental plant. Findings illustrate that treatments of 75 and 50 % of TFI led to a raise in the enzymatic antioxidants production after 60 days from sowing. While both soil conditioners (either solely or in combination) and the sugar alcohols led to a decline the values of these enzymatic antioxidants. On the contrary, at the period of 90 days from sowing (growth advanced stage), the grown plants without the studied substances (soil conditioners and sugar alcohols) cannot continue producing these enzymatic antioxidants under water deficit treatments. Also, the deficit irrigation (75 and 50 % of TFI) caused a significant decline in the performance and productivity of maize compared to traditional irrigation (100 % of TFI). For example, the highest values of fresh weight (951.64 and 965.61 g plant -1 , for 1 st and 2 nd seasons, respectively), leaf area (620.25 and 628.56 cm 2 plant -1 , for 1 st and 2 nd seasons, respectively) and chlorophyll content (40.55 and 41.42 SPAD for 1 st and 2 nd seasons, respectively) were realized under traditional irrigation (100 % of TFI) followed by those values achieved under deficit irrigation treatment (75 % of TFI), while the lowest one was recorded with 50 % of TFI treatment. Regarding the soil conditioners effect, the compost and biochar either solely or in combination improved the plant performance and productivity compared to the corresponding plants grown without soil conditioners. The highest values of growth criteria and productivity were realized with the combined treatment of compost and biochar followed by compost alone then biochar alone and lately control. Concerning sugar alcohols, the sorbitol was the superior, while the glycerol came in the second order and lately control treatment. Generally, it can be concluded that a combination of compost and biochar may hold enough amounts of irrigation water and nutrients and release them as required by the maize plant, thus enhancing plant growth performance with the limited supply of irrigation water. Also, sugar alcohols h...

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Section: )mentioning

confidence: 99%

Role of compost, biochar and sugar alcohols in raising the maize tolerance to water deficit conditions

elsherpiny¹

2023

Egypt.J. Soil Sci.

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“…Theerakulpisut and Gunnula showed also that an exogenous supply of sorbitol seems to have a protective role in case of an osmotic stress for salt-sensitive plants (Theerakulpisut and Gunnula, 2012). Furthermore, glycerol was found to stimulate the growth of various crops and regulate plant disease resistance against bacterial pathogens (Qian et al, 2015;Tisserat and Stuff, 2011). Myo-inositol, on the other hand, has the ability to prevent against the negative effects of drought or salinity stresses such as Reactive Oxygen Species accumulation (Hu et al, 2018;Yildizli et al, 2018).…”

Section: Organic Compositionmentioning

confidence: 99%

Olive mill wastewater: From a pollutant to green fuels, agricultural and water source and bio-fertilizer – Hydrothermal carbonization

Azzaz

Jeguirim

Kinigopoulou³

et al. 2020

Science of The Total Environment

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Hydrothermal carbonization (HTC) is considered as a promising technique for wastes conversion into carbon rich materials for various energetic, environmental and agricultural applications. In this work, the HTC of olive mill wastewater (OMWW) was investigated at different temperatures (180 -220°C) and both, the solid (i.e., hydrochars) and the final process liquid derived from the thermal conversion process were deeply analyzed. Results showed that the solid yield was affected by the temperature, i.e., decrease from 57% to 25% for temperatures of 180°C and 220°C, respectively. Furthermore, the hydrochars presented an increasing fixed carbon percentage with the increase of the carbonization temperature, suggesting that decarboxylation is the main reaction driving the HTC process. The decrease in the O/C ratio promoted an increase of the high heating value (HHV) by 32% for hydrochar prepared at 220°C. The process liquids were sampled and their organic contents were analyzed using GC-MS technique. Acids, alcohols, phenols and sugar derivatives were detected and their concentrations varied with carbonization temperatures. The assessment of the physico-chemical properties of the generated HTC by-products suggested the possible application of the hydrochars for energetic insights while the liquid fraction could be practical for in agricultural field.

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“…Glycerol is an environmentally friendly, non‐toxic, edible and biodegradable sugar alcohol. As a byproduct of the booming biodiesel industry, large amounts of low‐cost glycerol are expected to be produced in the coming years (Yang et al ., ), and thus the utility of glycerol in agricultural applications has been explored previously as a potential added‐value byproduct of biofuels production (Tisserat and Stuff, ). The application of glycerol in foliar sprays has been found to stimulate short‐term plant growth in diverse plant species under glasshouse conditions; however, the mechanism of this enhancement has not been reported.…”

Section: Introductionmentioning

confidence: 99%

Application of glycerol as a foliar spray activates the defence response and enhances disease resistance of Theobroma cacao

Zhang

Smith

Maximova

et al. 2014

Molecular Plant Pathology

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Previous work has implicated glycerol-3-phosphate (G3P) as a mobile inducer of systemic immunity in plants. We tested the hypothesis that the exogenous application of glycerol as a foliar spray might enhance the disease resistance of Theobroma cacao through the modulation of endogenous G3P levels. We found that exogenous application of glycerol to cacao leaves over a period of 4 days increased the endogenous level of G3P and decreased the level of oleic acid (18:1). Reactive oxygen species (ROS) were produced (a marker of defence activation) and the expression of many pathogenesis-related genes was induced. Notably, the effects of glycerol application on G3P and 18:1 fatty acid content, and gene expression levels, in cacao leaves were dosage dependent. A 100 mm glycerol spray application was sufficient to stimulate the defence response without causing any observable damage, and resulted in a significantly decreased lesion formation by the cacao pathogen Phytophthora capsici; however, a 500 mm glycerol treatment led to chlorosis and cell death. The effects of glycerol treatment on the level of 18:1 and ROS were constrained to the locally treated leaves without affecting distal tissues. The mechanism of the glycerol-mediated defence response in cacao and its potential use as part of a sustainable farming system are discussed.

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Stimulation of Short-term Plant Growth by Glycerol Applied as Foliar Sprays and Drenches under Greenhouse Conditions

Cited by 19 publications

References 28 publications

Role of compost, biochar and sugar alcohols in raising the maize tolerance to water deficit conditions

Role of compost, biochar and sugar alcohols in raising the maize tolerance to water deficit conditions

Olive mill wastewater: From a pollutant to green fuels, agricultural and water source and bio-fertilizer – Hydrothermal carbonization

Application of glycerol as a foliar spray activates the defence response and enhances disease resistance of Theobroma cacao

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