A Pivotal Role of Chitosan Nanoparticles in Enhancing the Essential Oil Productivity and Antioxidant Capacity in Matricaria chamomilla L.

Mazrou, Ragia M.; Ali, Esmat F.; Hassan, Sabry; Hassan, Fahmy

doi:10.3390/horticulturae7120574

Cited by 10 publications

(5 citation statements)

References 42 publications

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“…These comparable results could be attributed to chitosan stimulation of production of plant hormones such as auxins and cytokinins, which promote cell elongation and division, and increase plant growth. Enhanced transportation of nitrogen in functional leaves also supports plant growth and development and enhances plant quality attributes by increasing protein synthesis and chlorophyll production (Mazrou et al, 2021). In contrast to the present results, Kahromi and Khara (2021) found that foliar application of chitosan did not affect biomass of Dracocephalum kotschy.…”

Section: Discussioncontrasting

confidence: 99%

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Bacillus velezensis B63 and chitosan control root rot, improve growth and alter the rhizosphere microbiome of geranium

ELSAYED,

EL-SAID,

SAFHI

et al. 2024

Phytopathol. Mediterr.

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The root rot complex of geranium plants caused by Rhizoctonia solani and Macrophomina phaseolina is a major threat, and control of these pathogens predominantly relies on chemicals. This study explored multifaceted applications of Bacillus velezensis (strain B63) and chitosan, assessing their biocontrol efficacy against root rot, and their subsequent effects on rhizosphere communities. Strain B63 was antagonistic to R. solani and M. phaseolina. Under field conditions, greatest efficacy was obtained with strain B63 (36% and 33% disease reductions in, respectively, two growing seasons), chitosan soaking + foliar spray 0.2% (CSF 0.2%) (33 and 27% reductions), and 0.1% chitosan soaking + foliar spray (CSF 0.1%) (33 and 26% reductions). These treatments also changed rhizosphere microbiota, as shown by numbers of colony-forming units (CFU) and 16S rRNA gene microbiome analyses. Concomitant with rhizosphere shifts, essential oil yields and composition were positively affected, as shown by gas chromatography analyses. Chitosan soaking + foliar spray 0.2% increased concentrations of citronellol (1.36-fold), geraniol (1.37-fold), citronellyl formate (1.54-fold), and geranyl formate (1.94-fold) in geranium essential oil, compared with the experimental controls. Strain B63 also increased these essential oils by 1.04- to 1.27-fold. B63 also enhanced eugenol levels by 1.35-fold. Treatments with B63 were more effective than chitosan in improving the geranium plant morphological parameters (plant height, numbers of branches, biomass). These results show that B. velezensis strain B63 treatments have potential for enhancing yields and product quality from geranium plant under root rot infection.

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Section: Discussioncontrasting

confidence: 99%

“…Kıtır Sen and Duran (2023) also reported that B. subtilis and B. megaterium led to increased yields of Izmir thyme. Other reports have shown that chitosan can increase essential oil content of thyme (Emami Bistgani et al, 2017), Origanum vulgare (Bharti et al, 2013), and Matricaria chamomilla L. (chamomile) (Mazrou et al, 2021).…”

Section: Discussionmentioning

confidence: 92%

Bacillus velezensis B63 and chitosan control root rot, improve growth and alter the rhizosphere microbiome of geranium

ELSAYED,

EL-SAID,

SAFHI

et al. 2024

Phytopathol. Mediterr.

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“…Increasing the chlorophyll activity under stressful conditions plays an important role in improving the photosynthesis rate and producing sufficient carbohydrates for cell growth and the production of EO-secreting glands, and in this way, it will be able to increase the EO content in the plant. In accordance with the results of the present study, Mazrou et al [ 36 ] noted that the application of CHT NPs enhanced the EO content of Matricaria chamomilla L. by 57.14% and 47.06% during the two seasons of study. Further, Golubkina et al [ 24 ] showed that the inoculation of AMF with Artemisia dracunculus and Lavandula angustifolia roots enhanced the EO content of both plants by 3% and 18% compared with the untreated control, respectively.…”

Section: Discussionsupporting

confidence: 92%

Improvement in Essential Oil Quantity and Quality of Thyme (Thymus vulgaris L.) by Integrative Application of Chitosan Nanoparticles and Arbuscular Mycorrhizal Fungi under Water Stress Conditions

Machiani

Javanmard

Ostadi

et al. 2023

Plants

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Water stress is one of the critical abiotic stresses and limiting factors in the productivity of plants, especially in arid and semi-arid regions. In recent years, the application of bio-fertilizer and stress-modulating nanoparticles (NPs) is known as one of the eco-friendly strategies for improving plants quantity and quality under stressful conditions. In order to achieve the desirable essential oil (EO) quality and quantity of thyme in water deficit conditions, a 2-year field experiment was carried out as a split plot based on the randomized complete block design (RCBD), with 12 treatments and three replications. The treatments included different irrigation levels, containing irrigation at 80% field capacity (FC80) as no stress, 60% FC as moderate water stress (FC60) and 40% FC as severe water stress (FC40), as well as four different fertilizer sources, including non-application of fertilizer (control), application of arbuscular mycorrhizal fungi (AMF), chitosan NPs (CHT) and co-application of AMF+CHT NPs. The results demonstrated that the dry yield of thyme decreased by 13% and 40.3% under FC60 and FC40 water stress conditions. However, co-application of AMF+CHT NPs enhanced the dry yield of thyme by 21.7% in comparison to the control (non-application of fertilizer). The maximum EO content (2.03%) and EO yield (10.04 g 7 g m−2) of thyme were obtained under moderate water stress (FC60) fertilized with AMF+CHT NPs. Co-application of AMF+CHT NPs enhanced the EO content and EO yield of thyme by 17.1% and 42.7%, respectively. Based on the GC-MS and GC-FID analysis, 38 constituents were identified in the thyme EO, with the major constituents being thymol (35.64–41.31%), p-cymene (16.35–19.38%), γ-terpinene (12.61–13.98%) and carvacrol (2.78–3.93%) respectively. The highest content of thymol and γ-terpinene was obtained under moderate water stress (FC60) fertilized with AMF+CHT NPs. In addition, the highest content of p-cymene and carvacrol was observed in the severe water stress (FC40) fertilized with AMF+CHT NPs. The present research suggests that the co-application of AMF+CHT NPs represents a sustainable and eco-friendly strategy for improving the EO quantity and quality of thyme under water stress conditions.

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“…A significant influence of biostimulants on agromorphological characteristics was observed, which is comparable to previous studies on lavandin (Erbas et al, 2017), garden thyme (Thymus vulgaris L.) (Kwiatkowski et al, 2020), and German chamomile (Mazrou et al, 2021). Similar to the present findings, increased plant height and number of branches in Dutch fennel (Foeniculum vulgare Mill.)…”

Section: Discussion Plant Growth and Pigment Investigationsupporting

confidence: 91%

Dynamics of Phosphorus and Biostimulants on Agro-Morphology, Yield, and Essential Oil Profile of German Chamomile (Matricaria chamomilla L.) Under Acidic Soil Conditions of the Western Himalaya

Rathore

Kumar

2022

Front. Plant Sci.

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German chamomile (Matricaria chamomilla L.) is a promising and easy to cultivate crop under suitable nutrient supply conditions, but acidic soils of Indian western Himalayas limit the availability of phosphorus to the plant and reduce flower production. Thus, a field experiment was conducted for two consecutive seasons (2018–2019 and 2019–2020) to study the effect of phosphorus dynamics and biostimulant application on the agro-morphological traits, essential oil (EO) yield, and chemical constituents of German chamomile in the mid hills of the western Himalayan region. The experiment consisted of 12 treatments, four phosphorus fertilizer levels (0, 30, 60 and 90 kg ha−1) and three biostimulants levels (control, amino acid at 5 mL L−1, and humic acid at 10 mL L−1). The experiment was replicated three times in a factorial complete randomized block design (FRBD). Agro-morphological and yield characteristics were significantly higher in phosphorus at 90 kg ha−1 and humic acid application compared to the control. Dry flower and EO yield was 17.87 and 26.76% higher with the 90 kg ha−1 phosphorus application while 2.45 and 5.79% higher in humic acid at 10 mL L−1 compared to the control. The EO constituents viz., chamazulene was 12.04 and 8.85% higher in phosphorus at 90 kg ha−1 and humic acid at 10 mL L−1 application compared to the control. On the other hand, α-bisabolol oxide B and α-bisabolol oxide A were decreased with increase in phosphorus application. This study presents novel facts, elucidation, and explanation for farmers and industrialists to produce German chamomile in acidic soils by integrating biostimulants with phosphorus fertilization and getting maximum yield and quality EO.

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A Pivotal Role of Chitosan Nanoparticles in Enhancing the Essential Oil Productivity and Antioxidant Capacity in Matricaria chamomilla L.

Cited by 10 publications

References 42 publications

Bacillus velezensis B63 and chitosan control root rot, improve growth and alter the rhizosphere microbiome of geranium

Bacillus velezensis B63 and chitosan control root rot, improve growth and alter the rhizosphere microbiome of geranium

Improvement in Essential Oil Quantity and Quality of Thyme (Thymus vulgaris L.) by Integrative Application of Chitosan Nanoparticles and Arbuscular Mycorrhizal Fungi under Water Stress Conditions

Dynamics of Phosphorus and Biostimulants on Agro-Morphology, Yield, and Essential Oil Profile of German Chamomile (Matricaria chamomilla L.) Under Acidic Soil Conditions of the Western Himalaya

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