Chitosan-Mediated Changes in dry Matter, Total Phenol Content and Essential Oil Constituents of two Origanum Species under Water Deficit Stress

Mohammadi, Hamid; Dizaj, Leila Aghaee; Aghaee, Ahmad; Ghorbanpour, Mansour

doi:10.1007/s10343-020-00536-0

Cited by 15 publications

(9 citation statements)

References 33 publications

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“…The number of branches (Figure 3B), plant height (Figure 3C), and leaf area index (Figure 3D) were higher under the replacement condition close to 100% of ETc with the bokashi organic compost application. Oregano shows changes in morphological development and distinct physiological activity according to the analyzed cultivar when subjected to water deficit conditions, and changes may involve plant architecture characteristics, reduction in leaf area, and photosynthetic rate (Mohammadi et al, 2021;Pereyra et al, 2021). Plants under water deficit conditions decrease leaf water potential, regulate stomatal opening, reducing photosynthesis and transpiration, and invest in chlorophyll b production (França et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

Biometry and Essential Oil of Oregano Grown Under Different Water Depths and Organic Fertilizer Doses in a Protected Environment

et al. 2022

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Information related to the phenological growth of oregano grown in a protected environment associated with water and nutritional availability is scarce. In this context, this study aimed to investigate the performance of oregano plants grown with bokashi organic fertilizer under water deficit. The experiment was carried out in randomized blocks in a 6×4 factorial scheme, consisting of six levels of water replacement (60, 70, 80, 90, 100, and 110% of crop evapotranspiration -ETc) and four bokashi doses (0, 100, 200, and 300 g m −2 ), with five replications. The number of branches, leaf area, mass accumulation, and oil concentration and yield were evaluated to characterize the plant performance. The data were analyzed using analysis of variance, multivariate analysis for equation determination, construction of response surface plots and dendrogram charts, and linear correlation. The interaction of the factors water replacement and bokashi organic fertilizer application was significant for the analyzed variables. Morphological components presented better responses under conditions of high water replacement and bokashi organic fertilizer application. The deficit irrigation adopted during cultivation associated with bokashi organic fertilization potentiated the concentration and yield of oregano essential oil.

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Section: Resultsmentioning

confidence: 99%

Biometry and Essential Oil of Oregano Grown Under Different Water Depths and Organic Fertilizer Doses in a Protected Environment

et al. 2022

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“…The current results showed that at Sd1 & Sd2 applying Ch and PS as a foliar application on maize plants fulfills pronounced improvements in yield, Wue, and Iwue under full irrigation (Ir100) or stress treatment (Ir70). The previous findings attributed to the numerous benefits that Ch and PS confer, this effect has been widely studied among them that Ch has an important effect on plant growth by catalyzing cell growth and development, increasing the activity of key enzymes in nitrogen metabolism, and enhancing nitro-K gen transfer, leading to increased yield (Guan et al 2009;Mondal et al 2013;dos Reis et al 2019;Mohammadi et al 2021). On other hand, applying PS not only improved physiological and agronomic features affecting crop growth and yield through optimum treatment of the water supply but has also mitigated the negative impacts of water stress.…”

Section: The Effect Of Chitosan and Potassium Silicatementioning

confidence: 99%

“…Under these circumstances, despite there were reductions in yield as temperatures and evapotranspiration increased, the adoption of certain management practices (i.e., proper irrigation, optimum sowing date, compost, and tillage), capable to alleviate these negative impacts, improve yield and decrease ET (Attia et al 2022). One of management practice is applying chitosan, which has been proposed to help reduce oxidative damage caused by stress caused by drought in crops (Yang et al 2009;Mohammadi et al 2021). The scavenging mechanism of chitosan can be linked to its structure, which has many available hydroxyl and amino groups interacting with reactive oxygen species (ROS) such as superoxide radicals, hydrogen peroxide, hydroxyl, and singlet oxygen that are toxic to plants (Li et al 2002;Sun et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Interaction Effects of Sowing Date, Irrigation Levels, Chitosan, and Potassium Silicate On Yield and Water Use Efficiency for Maize Grown Under Arid Climate

Elshamly

2023

Gesunde Pflanzen

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Adopting foliar antiperspirants reduces the negative effects of water stress on crop production. In this study effects of chitosan (Ch) and potassium silicate (PS) on maize sowing at two sowing dates under irrigation water levels (100% of irrigation water applied −Ir00 and 70% of irrigation water applied −Ir70) were investigated. Thus, during the spring and fall seasons of 2020–2021, a field experiment of two similar experiments was conducted at the experimental farm of Water Studies and Research Complex (WSRC) station, National Water Research Center, Toshka—Abu Simbel City, Egypt, which the sowing dates were allocated in the main plot, then a strip-plot design with five replicates was used. It was found that sowing maize seeds in the fall season led to attaining a higher maize yield than in the spring. Moreover, the adoption of Ir70 provides better maize yield and water use efficiency than Ir100, particularly at the fall season sowing date. In addition, the adoption of the higher Ch concentrations in the spring, led to better improvements in maize yield particularly under Ir70, while the adoption of the higher concentrations of PS in the fall seasons, led to better maize yield. It was concluded based on present findings that applying chitosan as foliar applications with concentrations at 500 (mg l−1) under Ir70 in the fall had significant effects to maintain the higher maize yield, water use efficiency and irrigation water use efficiency in the arid regions as Toshka district and other similar areas.

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“…CH also allows plants to tolerate a variety of abiotic stress, including stress water; its use can be limited by its low water solubility, and CH derivatives improved the photosynthetic parameters of drought-sensitive corn, causing tolerance to this stress (Reis et al 2019). Moreover, CH has a unique bioactive property that can prevent serious injury to plants under stressful conditions by triggering the mechanisms of plant defense (Mohammadi et al 2021). Previous research has shown the use of CH as an antiperspirant (Attaran et al 2022).…”

Section: Introductionmentioning

confidence: 99%

Minimizing the Adverse Impact of Drought on Corn by Applying Foliar Potassium Humate Combined with Chitosan

Elshamly

2023

J Soil Sci Plant Nutr

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Previous studies have demonstrated the impact of potassium humate (KH) and chitosan (CH) on ameliorating drought effects, but their combined applications in promoting these benefits are still unfound. Therefore, the current study aims to evaluate the efficacy of KH and CH on corn growth, yield, nutrient contents, and water productivity under full and limited irrigation conditions. Under the drip irrigation system, a split-plot experiment was performed with three replications in the second week of February in the seasons of 2021 and 2022. The main plot was equipped with a valve and a flow emitter to control the amount of the targeted irrigation levels (full irrigation and limited irrigation from the development stage onwards), as well as four foliar applications in the subplot (0, CH 500 mg l−1, KH 3000 mg l−1, and CH 500 mg l−1 + KH 3000 mg l−1). It was found that separate foliar applications of KH or combined foliar applications of KH + CH had a significant impact on the most examined traits. However, compared to the control, adopting limited irrigation and applying combined applications thereof have significantly increased iron, zinc, manganese, oil, protein, yield, and water productivity. In addition, this combination decreased proline, and the maximum reduction was observed for the combined application with adopting full irrigation. In arid regions, the researcher recommends treating stressed plants with combined foliar applications of KH + CH, which could help plants overcome the negative effects of drought and attain the highest yield and water productivity.

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Chitosan-Mediated Changes in dry Matter, Total Phenol Content and Essential Oil Constituents of two Origanum Species under Water Deficit Stress

Cited by 15 publications

References 33 publications

Biometry and Essential Oil of Oregano Grown Under Different Water Depths and Organic Fertilizer Doses in a Protected Environment

Biometry and Essential Oil of Oregano Grown Under Different Water Depths and Organic Fertilizer Doses in a Protected Environment

Interaction Effects of Sowing Date, Irrigation Levels, Chitosan, and Potassium Silicate On Yield and Water Use Efficiency for Maize Grown Under Arid Climate

Minimizing the Adverse Impact of Drought on Corn by Applying Foliar Potassium Humate Combined with Chitosan

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