التفاصيل البيبلوغرافية
| العنوان: |
Effects of the extract and the essential oil of Allium sativum on tea mealy bug, Pseudococcus viburni Sigornet (Hemiptera: Pseudococcidae). |
| المؤلفون: |
Ramzi, Samar, Seraji, Ali, Azadi Gonbad, Reza, Roofigari Haghighat, Shiva |
| المصدر: |
Biocatalysis & Agricultural Biotechnology; Jul2022, Vol. 42, pN.PAG-N.PAG, 1p |
| مصطلحات موضوعية: |
MEALYBUGS, GARLIC, ESSENTIAL oils, HEMIPTERA, LACTATE dehydrogenase, ALKALINE phosphatase |
| مستخلص: |
The effects of methanolic extract (ME) and essential oil (EO) of garlic were studied on the third-instar nymphs of Pseudococcus viburni Signoret to elucidate whether garlic essential oil and extract may cause mortality on tea mealybug and physiological disorders. The nymphs exposed to ME showed the LC 50 values of 0.33 and 0.12% after 24 and 48 h while those were 0.42 and 0.31% in case of EO. The ED 50 values of ME and EO were calculated to be 0.31 and 0.22%, respectively. The LC 50 concentrations of Garlic ME and EO significantly increased the activities of general esterase and glutathione S -transferase. Meanwhile, treating P. viburni nymphs by ME and EO significantly increased the activities of aspartate- and alanine aminotransferases as well as ɤ-glutamyl transferase compared to control. The lower activity of lactate dehydrogenase was recorded in the nymphs treated by ME and EO compared to control but the significant increase of acid- and alkaline phosphatase activities was found in the nymphs treated by ME and EO, respectively. Finally, garlic ME and EO significantly decreased the content of protein and glycogen as storage macromolecules compared to control. Our results demonstrated garlic metabolites imposed significant mortality on the nymphs of P. viburni and prominently caused discrepancies in the physiological processes. • Pseudococcous viburni exposed to ME showed the LC50 of 0.33 and 0.12% after 24 and 48 h while Those were 0.42 and 0.31% in case of EO. • Garlic ME and EO significantly increased the activities of general esterase and glutathione S-transferase. • Treating P. viburni nymphs by ME and EO significantly increased the activities aspartate- and alanine aminotransferases as well as ɤ-glutamyl transferase compared to control. • Garlic ME and EO significantly decreased the content of storage macromolecules. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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