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Effect of 1,8-cineol on the biology and physiology of elm leaf beetle, Xanthogaleruca luteola (Col.: Chrysomelidae)

100%

Adibmoradi G. , Jalali Sendi J. , Tirgari S. , Imani S. , Razavi-Nematolahi A.

The content of essential oil in ten sweet basil [Ocimum basilicum L.] cultivars and its composition

63%

Seidler-Lozykowska K. , Krol D.

Herba Polonica

2008

tom 54

nr 3

The experiment was conducted in the Research Institute of Medicinal Plants in Poznań, Poland in 2005–2006 and concerned a collection of ten sweet basil cultivars such as: ‘Minette’, ‘Mittelgrossblättriges Grünes’, Piccolino’, ‘Rubin’, ‘Red Rubin’, ‘Genoveser’, ’Martina’ and two Polish cultivars: ‘Wala’ and ‘Kasia’. Moreover, ‘Lemonette’ cultivar of Ocimum americanum L. was also included in the collection. The content of essential oil in the dried herb was estimated and its composition was analyzed. The content of essential oil in the dried herb without stems ranged from 0.23% (‘Red Rubin’) to 1.67% (‘Kasia’). The main component of the oils that came from nine basil cultivars was linalool, (from 37.07% for ‘Piccolino’ to 76.22% for ‘Minette’). Considerable amounts of 1,8-cineol and eugenol, next β-pinene, α-terpinene and myrcene were also found. The content of 16 identified components in oil represented from 69.34% (‘Piccolino’) to 96.11% (‘Wala’) of the GC profiles. Both Polish cultivars were distinguished by high content of geraniol in essential oil.

W latach 2005–2006 w Instytucie Roślin i Przetworów Zielarskich badano kolekcję składającą się z 10 odmian bazylii pospolitej: ‘Minette’, ‘Mittelgrossblättriges Grünes’, Piccolino’, ‘Rubin’, ‘Red Rubin’, ‘Genoveser’, ’Martina’, ‘Wala’, ‘Kasia’ oraz odmiany ‘Lemonette’ należącej do gatunku Ocimum americanum. W suchym, otartym zielu oznaczano zawartość olejku eterycznego oraz jego skład. Zawartość olejku wynosiła od 0,23% (‘Red Rubin’) do 1,67% (‘Kasia’). Głównym składnikiem olejków pochodzących z 9 odmian był linalol (od 37,07% w ‘Piccolino’ do 76,22% w ‘Minette’). Inne składniki olejku o znacznym udziale to 1,8-cyneol, eugenol, β-pinen, α-terpinen oraz mircen. Obie polskie odmiany ‘Wala’ i ‘Kasia’ wyróżniały się wysoką zawartością geraniolu w olejku.

Effect of 1,8-cineol on the biology and physiology of elm leaf beetle, Xanthogaleruca luteola (Col.: Chrysomelidae)

51%

Adibmoradi G. , Sendi J. J. , Tirgari S. , Imani S. , Razavi-Nematolahi A.

Journal of Plant Protection Research

2018

tom 58

nr 4

The effect of monoterpenoid 1,8-cineol on the toxicity and physiology of elm leaf beetle, Xanthogaleruca luteola Müller under laboratory conditions (26 ± 1°C, 65 ± 10% RH and 16L : 8D h) was investigated. Initially, LC30 and LC50 values of the constituent were estimated to be 23.5 ppm and 31.9 ppm for the last instar larvae after 48 h, respectively. Significant changes were observed in the values of relative growth rate (RGR), efficiency of conversion of ingested food (ECI), efficiency of conversion of digested food (ECD), approximate digestibility (AD) and consumption index (CI) between control and treated larvae with 1,8-cineol. The amounts of protein, glucose and urea decreased in the treated larvae in comparison with control. Similar findings were observed in the activities of alkaline phosphatase and lactate dehydrogenase while the activities of glutathione S-transferase and esterase significantly increased in the treated larvae using CDNB and α-naphtyl acetates as the substrates. Morphological and histological changes brought about by 1,8-cineol in the present study are indicative of growth inhibition targeting specific organs such as those of reproduction. We believe that 1,8-cineol can be considered as a safe and environmentally friendly compound.