The effect of drought stress on the expression of key genes involved in the biosynthesis of phenylpropanoids and essential oil components in basil (Ocimum basilicum L.)

Mandoulakani, Babak Abdollahi; Eyvazpour, Elham; Ghadimzadeh, Mortaza

doi:10.1016/j.phytochem.2017.03.006

Cited by 112 publications

(66 citation statements)

References 32 publications

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“…Lavender EO production was not influenced by 30 to 70 mg L −1 of available phosphorus, according to [29], in contrast with another study on lavender, where higher amounts of oil were produced with increased P applications in field trial [50]. Essential oil synthesis can be also fostered by stress conditions [70]. Plants in P:C:A substrate indeed had a poor performance; however, they produced higher amounts of EOs.…”

Section: Influence Of Cultivation Substrate On Eo Yield and Compositionmentioning

confidence: 71%

“…The cultivation substrate influenced the EO yields according to the one-way PERMANOVA analysis (F = 3.225, p = 0.047), with yields obtained from plants in the P:C substrates significantly lower than yields obtained from plants in P:C:A substrates. The production of secondary metabolites, including EOs, is regulated by genetics and edaphic factors [69], water stress [31][32][33] and light, as well [70]. Differences in EO yield caused by substrates have been observed in other Lamiaceae species, such as Thymus caespititius Brot.…”

Section: Influence Of Cultivation Substrate On Eo Yield and Compositionmentioning

confidence: 99%

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Cultivation Substrate Composition Influences Morphology, Volatilome and Essential Oil of Lavandula Angustifolia Mill.

et al. 2019

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Aromatic plants are commonly produced for ornamental, cosmetic and medicinal purposes. Their morphological traits and the amounts and compositions of the volatile substances and essential oils (EOs) produced can be influenced by several factors, including the cultivation technique. In the present study, the influence of substrate composition on Lavandula angustifolia Mill. production was evaluated. In particular, substrates containing mixes of peat (P), green compost (C) and/or demolition aggregates (A) were tested in the following ratios: 70%:30% v/v, P:C; 70%:30% v/v, P:A; and 40%:30%:30% v/v, P:C:A. The P:C mixture allowed to obtain the best results in terms of survival rate, compactness of the plant and flower production. The P:C:A led to higher yields and better quality of EOs, with higher amounts of linalool, an important compound for medicinal uses. The volatiles and the blooming trend were not affected by the different cultivation substrates. Therefore, substrate composition in pot lavender cultivation can be regulated depending on the final use of the plant, successfully using locally sourced material in addition to peat.

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Section: Influence Of Cultivation Substrate On Eo Yield and Compositionmentioning

confidence: 71%

Section: Influence Of Cultivation Substrate On Eo Yield and Compositionmentioning

confidence: 99%

Cultivation Substrate Composition Influences Morphology, Volatilome and Essential Oil of Lavandula Angustifolia Mill.

et al. 2019

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“…While terpenes are formed through the mevalonate pathway, the phenylpropanoids are produced by the shikimic acid pathway, in which the enzyme phenylalanine ammonia-lyase is involved. The activation of this enzyme is influenced by a large number of factors, biotic and abiotic, being thus highly sensitive to environmental conditions (Mandoulakani et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

Chemical characterization of the essential oil from leaves of basil genotypes cultivated in different seasons

Pinto¹,

Blank²,

Nogueira³

et al. 2019

Bol Latinoam Caribe Plant Med Aromat

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“…An increase in EO percentage and compositions have been noted in both O. basilicum and O. americanum plants subjected to drought stress 14 . In sweet basil plants exposed to drought stress, methylchavicol and methyleugenol accumulation was commensurate with the expression levels of CVOMT and EOMT genes 15 . The higher level of methylchavicol content was also detected in sweet basil under sever water stress which was positively correlated with transcriptional levels of CVOMT 16 .…”

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confidence: 82%

Cold stress changes antioxidant defense system, phenylpropanoid contents and expression of genes involved in their biosynthesis in Ocimum basilicum L.

Rezaie

Mandoulakani

Fattahi

2020

Sci Rep

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environmental stresses might alter the activity of antioxidant defense system and both quantity and quality of the essential oil constituents in aromatic plants. in the current study, a greenhouse experiment was designed to assess the influence of cold stress on total phenolic (TPC) and flavonoid contents (TFC), DPPH radical scavenging, antioxidant and phenylalanine ammonia-lyase (PAL) enzymes activity and content of phenylpropanoid compounds in Ocimum basilicum L. the genes expression levels of chavicol O-methyl transferase (CVOMT), cinnamate 4-hydroxylase (C4H), eugenol synthase 1 (EGS1) and eugenol O-methyl transferase (EOMT) were also investigated. Results revealed the highest TPC, TFC and DPPH at 4 °C for 12 h. Positive significant correlation was observed between TFC and DPPH, as well as TPC and PAL enzyme activity. The highest activity of superoxide dismutase and guaiacol peroxidase was recorded in 4 °C for 48 h, while this treatment caused the highest reduction in the activities of ascorbate peroxidase and catalase. In plants exposed to 10 °C for 48 h, the contents of methyleugenol and methylchavicol was positively associated with the expression levels of EGS1 and EOMT. A positive correlation was also found between C4H expression and eugenol, methyleugenol and methylchavicol contents under 4 °C for 12 h.Ocimum genus, belonging to family Lamiaceae, is a source of economically valuable aromatic oils with medicinal properties. This genus possesses an extensive intra-and inter-specific genetic diversification including 65 to more than 150 species spread throughout the world 1 . Ocimum sanctum and O. basilicum (sweet basil), two high priority species in this genus, are extensively used for their pharmaceutical and industrial importance. O. basilicum L. (2n = 4x = 48), originally from India, Iran and Afghanistan contains multiple terpenoid and phenylpropanoid compounds which are used in medicinal and perfume industries 2 . This compounds mostly produces in glandular trichomes on the leaf surface 3 . The most important compounds related to fragrance property are linalool, 1,8 cineole, methylchavicol (estragole) and eugenol. Basil essential oil (EO) has anticancer and hypoglycemic tuberculosis properties 4,5 . Also cytotoxic property of ethanolic extract of basil containing eugenol has been reported on human laryngeal cancer cells 5 . Terpenoids and phenylpropanoids such as eugenol, methylchavicol, methyleugenol and cinnamate are the main constitutes of basil EO 4 . The major phenylpropanoid components of basil are methylchavicol and methyleugenol. These compounds are extensively used in perfumes, aroma therapy, food and medicinal industries. Methylchavicol stimulates liver regeneration, shows hypothermic and DNA binding and spasmolytic activities. Phenylpropanoid compounds is produced through shikimate pathway. Phenylalanine ammonia-lyase (PAL), involved in the initial step of phenylpropanoid metabolism, deaminates phenylalanine to generate trans-cinnamic acid and ammonia 3 . Cinnamate 4-hydroxylase (C4H), a cyt...

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The effect of drought stress on the expression of key genes involved in the biosynthesis of phenylpropanoids and essential oil components in basil (Ocimum basilicum L.)

Cited by 112 publications

References 32 publications

Cultivation Substrate Composition Influences Morphology, Volatilome and Essential Oil of Lavandula Angustifolia Mill.

Cultivation Substrate Composition Influences Morphology, Volatilome and Essential Oil of Lavandula Angustifolia Mill.

Chemical characterization of the essential oil from leaves of basil genotypes cultivated in different seasons

Cold stress changes antioxidant defense system, phenylpropanoid contents and expression of genes involved in their biosynthesis in Ocimum basilicum L.

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