Seaweed and phosphate-solubilizing bacteria biofertilizers ameliorate physiochemical traits and essential oil content of Calendula officinalis L. under drought stress

Azizi, Afsaneh; Bagnazari, Majid; Mohammadi, Meisam

doi:10.1016/j.scienta.2023.112653

Cited by 2 publications

(1 citation statement)

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“…Auxins, cytokinins, and gibberellins - enhancing-promoting compounds in algae extracts – in excessive quantity can be phytotoxic to plants and cause negative effects on the physiological processes and on the assimilation of water and nutrients ( Illera-Vives et al., 2022 ). Due to the content of macro and micro-nutrients and plant hormones, the correct application of seaweed extracts can improve root growth and development and, at the same time, can maintain a balanced water content and a correct transpiration rate ( Azizi et al., 2024 ).…”

Section: Discussionmentioning

confidence: 99%

Foliar application of various biostimulants produces contrasting response on yield, essential oil and chemical properties of organically grown sage (Salvia officinalis L.)

Farruggia,

Di Miceli,

Licata

et al. 2024

Front. Plant Sci.

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Sage (Salvia officinalis L.) is a medicinal and aromatic plant (MAP) belonging to the Lamiaceae family. Its morphological, productive and chemical characteristics are affected by abiotic and biotic factors. The use of biostimulants seems to be one of the most interesting innovative practices due to fact they can represent a promising approach for achieving sustainable and organic agriculture. Despite a large application in horticulture, the use of biostimulants on MAPs has been poorly investigated. On this basis, a field experiment in a 2-year study was done to assess the effect of foliar treatments with different types of biostimulants (containing seaweeds, fulvic acids and protein hydrolysates) and two frequencies of application on morphological, productive, and chemical characteristics of S. officinalis grown organically in Mediterranean environment. Morphological, productive, and chemical parameters were affected by the factors. The biostimulant application generated higher plant height, chlorophyll content, relative water content, biomass yield and essential oil yield compared to control plants. In addition, more frequent application of biostimulants produced higher biomass and essential oil yield. The application of fulvic acid and protein hydrolysates every week produced the highest total fresh yields (between 3.9 and 8.7 t ha-1) and total dry yields (between 1.3 and 2.5 t ha-1). The essential oil yield almost doubled (33.9 kg ha-1) with a higher frequency of protein hydrolysates application. In this study, 44 essential oil compounds were identified, and the frequency factor significantly influenced the percentage of 38 compounds. The highest percentage of some of the most representative monoterpenes, such as 1,8-cineole, α-thujone and camphor, were observed in biostimulated plants, with average increases between 6% and 35% compared to control plants. The highest values for total phenolics, rosmarinic acid, antioxidant activity were obtained in control plants and with a lower frequency of biostimulant applications. This study emphasizes how biostimulant applications may be used to improve sage production performance and essential oil parameters when produced in agricultural organic system. At the same time, biostimulants application caused a decrease in total phenolic, antioxidant activity and rosmarinic acid values.

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Section: Discussionmentioning

confidence: 99%

Foliar application of various biostimulants produces contrasting response on yield, essential oil and chemical properties of organically grown sage (Salvia officinalis L.)

Farruggia,

Di Miceli,

Licata

et al. 2024

Front. Plant Sci.

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Genome-Wide Identification of the COMT Gene Family in Juglans regia L. and Response to Drought Stress

Ma,

Luo,

et al. 2024

Plants

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Caffeic acid O-methyltransferase (COMT), as a multifunctional enzyme involved in various physiological and biochemical processes in lignin metabolism, plays an important role in a plant’s response to stress. In this study, we isolated COMT family members from the walnut genome by bioinformatics and analyzed their physicochemical properties and their expression under drought stress to provide gene resources for drought resistance in walnut. The results showed that 33 COMT genes were identified from walnuts and distributed on different chromosomes. The molecular weight of proteins varies greatly. According to the phylogenetic tree, the family can be divided into seven subgroups, which are relatively conservative in evolution and closely related to Arabidopsis thaliana. Promoter analysis showed that the promoter of the walnut COMT gene contains rich cis-elements of plant hormone response and stress response, and the real-time fluorescence scale name can be significantly induced by drought stress. Compared with wild-type Arabidopsis, overexpression JrCOMT19 significantly increased the enzyme activity (SOD, POD, and CAT) and proline content. Meanwhile, overexpression of JrCOMT19 significantly increased the lignin content and expression of related genes. Therefore, JrCOMT plays an important role in responding to drought in walnuts, and overexpression JrCOMT19 can improve the resistance to drought stress by increasing lignin content, antioxidant enzyme activity, and osmotic substance content.

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Seaweed and phosphate-solubilizing bacteria biofertilizers ameliorate physiochemical traits and essential oil content of Calendula officinalis L. under drought stress

Cited by 2 publications

References 93 publications

Foliar application of various biostimulants produces contrasting response on yield, essential oil and chemical properties of organically grown sage (Salvia officinalis L.)

Foliar application of various biostimulants produces contrasting response on yield, essential oil and chemical properties of organically grown sage (Salvia officinalis L.)

Genome-Wide Identification of the COMT Gene Family in Juglans regia L. and Response to Drought Stress

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