Effect of Water Stress on Productivity and Essential Oil Content and Composition of<i>Thymus carmanicus</i>

Bahreininejad, Babak; Razmjoo, Jamshid; Mirza, Mehdi

doi:10.1080/0972060x.2014.901605

Cited by 48 publications

(19 citation statements)

References 13 publications

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“…Other compounds showed a relative high proportion although with noticeable intrapopulational variability: camphor (0.3 -18.8 %), borneol (0.9 -9.9 %), camphene (0.1 -6.9 %), linalool (0.5 Oxygenated sesquiterpenes showed a similar behavior: a significant and more pronounced decrease was observed from May (5.9 -25.9 %) to August (1.2 -11.3 %). Qualitative and quantitative significant changes in essential oil profiles due to water deficit have been also found in other studies concerning phenolic Thymus daenensis and Thymus carmanicus (24,33) and other species as Cymbopogon nardus (34) or Salvia officinalis (35). In conclusion, taking into account that 1,8-cineole is a valuable component of thyme chemotype, its increasing proportion owing summer drought suggests weighing up the convenience of applying a regulate water stress in thyme crop management in order to improve its proportion.…”

Section: Climate Resultssupporting

confidence: 70%

“…Specifically, water stress has been found to have a noticeable influence on yield and chemical profile of thymus essential oils (23)(24)(25). Concerning 1,8-cineole proportions, Leicach et al (26) have reported an increase of 1,8-cineole and oxygenated sesquiterpenes in Eucaliptus camaldulensis, at the same time that a decrease of non-oxygenated monoterpenes was observed.…”

Section: Introductionmentioning

confidence: 99%

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Effect of drought stress on essential oil composition ofThymus vulgarisL. (Chemotype 1, 8-cineole) from wild populations of Eastern Iberian Peninsula

Molina

Vacas

2016

Journal of Essential Oil Research

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1,8-cineole defines a typical chemotype of Thymus vulgaris L. in Iberian Peninsula. This compound has a wide range of potentially useful bioactive properties. In order to study the influence of drought stress in the essential oil (EO) composition of this chemotype, sixty plants from six wild populations of Eastern Iberian Peninsula were distilled and analyzed by GC and GC/MS. The harvest dates (May and August) were selected in such a way that the typical summer drought in Mediterranean climates was the critical factor affecting EO composition. Despite the high intrapopulational variability, significant increases of 1,8-cineole were found after the drought period (21-8 %-43.2%, in May, up to 42.6 %-68.5 % in August). On the other hand, individuals from one of the populations showed different profiles rich in linalool and camphor or sesquiterpenoid compounds as -cadinol.

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Section: Climate Resultssupporting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Effect of drought stress on essential oil composition ofThymus vulgarisL. (Chemotype 1, 8-cineole) from wild populations of Eastern Iberian Peninsula

Molina

Vacas

2016

Journal of Essential Oil Research

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“…This is in accordance with the fact that it is known as a more water demanding species in the practice. While the loss of biomass due to lower SWC in lemon balm is comparable with former references [9,16], the lack of significant changes in thyme may contradict to some previous data [1,4]. Unfortunately, each publication represents different conditions, thus hardly comparable with our data.…”

Section: Discussioncontrasting

confidence: 56%

“…In the agronomical practice, thyme is considered as a drought tolerant species. However, the majority of trials carried out under open field conditions ascertained that lower field capacity or longer irrigation intervals reduced plant height and herb yield while increased root/shoot ratio and essential oil content [1][2][3][4]. Accumulation of volatile phenolic compounds seems to be accelerated by warm and dry climatic conditions [2,21], although contradictory findings have also been published [1].…”

Section: Introductionmentioning

confidence: 99%

Effect of water supply on growth and polyphenols of lemon balm (Melissa officinalisL.) and thyme (Thymus vulgarisL.)

Németh-Zámbori¹,

Pluhár²,

Szabó³

et al. 2016

Acta Biologica Hungarica

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A pot experiment was carried out with lemon balm (Melissa officinalis L.) and thyme (Thymus vulgaris L.). Different water supply was applied: 25%, 40% and 70% saturation of soil water capacity (SWC). Morphological traits, biomass and phenolic type active ingredients were investigated.Among the two species, main differences were registered in biomass and TPC. Lower SWC resulted in reduced biomass production of lemon balm, while the applied stress treatments did not effect the biomass of thyme. In lemon balm, highest TPC contents were measured in control plants both in shoots and roots but in thyme, the shoots showed a significantly increased TPC at the 25% SWC conditions. Neither the content of total flavonoids nor that of the rosmarinic acid was affected by the treatments. The antioxidant capacity proved to be in tight connection with the TPC in both species (r = 0.766-0.883). The rosmarinic acid content of lemon balm plants contributed to the antioxidant capacity, as well (r = 0.679-0.869).

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“…Hortorum Cultus, 16(4), 13-24. DOI: 10.24326/asphc.2017.4.2 Tétényi 1986, Zámbori-Németh et al 2005, Manukyan 2011, Bahreininejad 2014] but opposite findings were also published [Khazaie et al 2008]. Unfortunately, the experimental conditions of these studies are hardly comparable with the present ones.…”

Section: Resultscontrasting

confidence: 54%

Variability of Phenolic Compounds of Four Aromatic Lamiaceae Species in Consequence of Different Water Supply

Németh-Zámbori¹,

Szabó²,

Rajhárt³

et al. 2017

Acta sci. Pol. Hortorum Cultus

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The reactions of lemon balm, marjoram, peppermint, thyme were investigated and compared in a pot experiment, adjusting 70% and 40% of soil water capacity (SWC). Biomass, total phenolic content (TPC), rosmarinic acid content (RA) and antioxidant capacity (FRAP, DPPH) of both the shoots and roots were measured. As an universal phenomenon the water stress (40% SWC) decreased the total biomass production of all species drastically. The highest increase was observed in the shoot mass of peppermint and lemon balm (decreased from 52.6 g•plant-1 to 11.3 g•plant-1 and from 236.8 g•plant-1 to 58 g•plant-1 , respectively). The reaction of marjoram was much more moderate. The accumulation level of TPC was accelerated in the aboveground parts of the studied species, universally. The reactions in the roots were less characteristic. The largest increase of TPC was measured in the shoots of lemon balm (from 359.015 mg GAE• g-1 d.w. up to 412.44 GAE•g-1 d.w.). The reaction of marjoram was the less characteristic in this respect, as well. The parallel changes of biomass and TPC level might allow the total phenolic content to function as an adequate marker in predicting the lack of appropriate water supply. RA content showed species characteristics. Thyme, marjoram and peppermint reacted by a significant elevation (by 23-127%) of the RA content to the lack of water. The highest proportions were accumulated in shoots of the stressed thyme plants (3.45% d.w.).

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Effect of Water Stress on Productivity and Essential Oil Content and Composition ofThymus carmanicus

Cited by 48 publications

References 13 publications

Effect of drought stress on essential oil composition ofThymus vulgarisL. (Chemotype 1, 8-cineole) from wild populations of Eastern Iberian Peninsula

Effect of drought stress on essential oil composition ofThymus vulgarisL. (Chemotype 1, 8-cineole) from wild populations of Eastern Iberian Peninsula

Effect of water supply on growth and polyphenols of lemon balm (Melissa officinalisL.) and thyme (Thymus vulgarisL.)

Variability of Phenolic Compounds of Four Aromatic Lamiaceae Species in Consequence of Different Water Supply

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