Comparative Analysis of Volatile Compounds of Gamma-Irradiated Mutants of Rose (Rosa hybrida)

Abstract

Roses are one of the most important floricultural crops, and their essential oils have long been used for cosmetics and aromatherapy. We investigated the volatile compound compositions of 12 flower-color mutant variants and their original cultivars. Twelve rose mutant genotypes were developed by treatment with 70 Gy of 60Co gamma irradiation of six commercial rose cultivars. Essential oils from the flowers of the 18 genotypes were analyzed by gas chromatography–mass spectrometry. Seventy-seven volatile compounds were detected, which were categorized into six classes: Aliphatic hydrocarbons, aliphatic alcohols, aliphatic ester, aromatic compounds, terpene alcohols, and others. Aliphatic (hydrocarbons, alcohols, and esters) compounds were abundant categories in all rose flowers. The CR-S2 mutant had the highest terpene alcohols and oil content. Three (CR-S1, CR-S3, and CR-S4) mutant genotypes showed higher ester contents than their original cultivar. Nonacosane, 2-methylhexacosane, and 2-methyltricosane were major volatile compounds among all genotypes. Hierarchical cluster analysis (HCA) of the rose genotypes gave four groups according to grouping among the 77 volatile compounds. In addition, the principal component analysis (PCA) model was successfully applied to distinguish most attractive rose lines. These findings will be useful for the selection of rose genotypes with improved volatile compounds.

Oil and Flower Production in Rosa damascena trigintipetala Dieck under Salinity Stress in Taif Region, Saudi Arabia

“…However, the essential oils represented in the present study were geraniol, citronellol and citronellyl formate. Current data were also in agreement with reports that demonstrated the major chemical composition of rose geranium oils to be citronellol [29], and that aliphatic hydrocarbons, aliphatic esters, and alcohols are major volatiles in all rose genotypes [17,30]. Previous reports explained that the effects of salinity stress levels, as well as the degree of tolerance in rose flowers, could be due to the induction of the specific enzymes involved in the biosynthesis of these compounds by salinity [31].…”

“…However, the main compounds of the essential oils were nonadecene (4-4.55%), β-citronellol (30-31%), trans-geraniol (20-21%), n-heneicosane (8-9%), and phenylethyl alcohol (4-4.16%) [16]. Ryu's group investigated the volatile compositions of 12 rose (Rosa hybrida) flower-color mutant variants and their original cultivars [17]. It is worth stating that plants grown under open sun with a black polyethylene mulch produced a good quality of damask rose [18].…”

Bioprospection and secondary metabolites profiling of marine Streptomyces levis strain KS46

“… No. Compound name R. time Area% Chemical formula Molecular weight Biological activity References 1 2-Pentanone, 4-hydroxy 3.884 0.81 C 5 H 10 O 2 102.13 Not reported 2 Cyclotetrasiloxane, octamethyl- 6.564 0.10 C 8 H 24 O 4 Si 4 296.61 Antioxidant, antimicrobial Gehan et al, 2020 3 n-Pentadecanol 28.920 4.01 C 15 H 32 O 228.4 Antibacterial activity Umdale et al, 2021 4 Octadecane, 1-iodo- 29.565 7.10 C 18 H 37 I 380.39 Not reported 5 2-methylhexacosane 29.675 1.62 C 27 H 56 380.73 Antimicrobial activity Ryu et al, 2020 6 Hexatriacontane 29.740 3.84 C 36 H 74 506.97 Antimicrobial, antioxidant, antiproliferative, activity Arun et al, 2017 7 Eicosyl trifluoroacetate 30.132 1.39 C 22 H 41 F 3 O 2 394.55 Not reported …”

Chemical Characterization of Taif Rose (Rosa damascena) Methanolic Extract and Its Physiological Effect on Liver Functions, Blood Indices, Antioxidant Capacity, and Heart Vitality against Cadmium Chloride Toxicity

“…Taif rose oil and rose water are very important and commercially valuable products [ 21 ]. The main products of rose are dried petals, rose water, and rose oil, all of which are used in the food, cosmetics, and perfume industries [ 22 , 23 ]. Rose species have been reported to have anti-human immunodeficiency virus, as well as anti-inflammatory and antidepressant properties [ 24 ].…”