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Evaluation of acaricidal activity of purpureocillium lilacinum isolated from Egyptian soil against tetranychus urticae
Other Title(s)
تقييم النشاط الإبادي لفطر البربريوسيليوم ليلاسينوم المعزول من التربية المصرية ضد العنكبوت الأحمر ذو البقعتين
Joint Authors
Qubaysi, Abd al-Nasir Ahmad
Nawar, Muhammad Adil
Awwad, Amani Abu al-Nasr
Hifnawi, Jahizah Ahmad
Source
Egyptian Journal of Desert Research
Issue
Vol. 68, Issue 2 (31 Dec. 2018), pp.157-172, 16 p.
Publisher
Publication Date
2018-12-31
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
he study is aimed to isolate and identify a potential entomopathogenic fungus from fields infested with spider mites and evaluate them as a bio-rationale agent against Tetranychus urticae Koch., which is an important agricultural pest that infests horticultural crops in both field and greenhouses.
Macroscopic and microscopic characteristics showed that the obtained entomogenous isolate was Purpureocillium lilacinum (formerly, Paecilomyces lilacinus).
P.
Lilacinum demonstrated mortality rates on adult females of T.
urticae of 71.19 and 77.97% with conidial concentrations of and 1.6 , respectively, 10 days after application.
Median lethal concentration of P.
lilacinum was 2.85 106 conidia/ml.
Enzymatic activity of P.
lilacinum was evaluated.
In this context, chitinolytic activity of P.
lilacinum was relatively weak, since the clear halo obtained was only 4.43 mm in diameter.
The activity of chitinase enzyme insignificantly increased over the incubation period of 10 days.
In contrast, proteolytic activity of P.
lilacinum was high and showed a clear zone (25.8 mm) around the colony after 10 days.
So, it is concluded that P.
lilacinum has a potential biological control against T.
urticae.
Finally, evaluation of the ethyl acetate extract of P.
lilacinum showed acaricidal potency since it exhibited LC50 values of 10.49 mg/ml for eggs and 30.75 mg/ml for adults.
So, it is concluded that P.
lilacinum has a potential biological control against T.
urticae.
American Psychological Association (APA)
Nawar, Muhammad Adil& Awwad, Amani Abu al-Nasr& Qubaysi, Abd al-Nasir Ahmad& Hifnawi, Jahizah Ahmad. 2018. Evaluation of acaricidal activity of purpureocillium lilacinum isolated from Egyptian soil against tetranychus urticae. Egyptian Journal of Desert Research،Vol. 68, no. 2, pp.157-172.
https://search.emarefa.net/detail/BIM-901645
Modern Language Association (MLA)
Nawar, Muhammad Adil…[et al.]. Evaluation of acaricidal activity of purpureocillium lilacinum isolated from Egyptian soil against tetranychus urticae. Egyptian Journal of Desert Research Vol. 68, no. 2 (2018), pp.157-172.
https://search.emarefa.net/detail/BIM-901645
American Medical Association (AMA)
Nawar, Muhammad Adil& Awwad, Amani Abu al-Nasr& Qubaysi, Abd al-Nasir Ahmad& Hifnawi, Jahizah Ahmad. Evaluation of acaricidal activity of purpureocillium lilacinum isolated from Egyptian soil against tetranychus urticae. Egyptian Journal of Desert Research. 2018. Vol. 68, no. 2, pp.157-172.
https://search.emarefa.net/detail/BIM-901645
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 168-171
Record ID
BIM-901645